Preparation method of lithium battery and management method based on battery capacity grading and matching

Abstract

The invention provides a preparation method of a lithium battery and a management method based on battery capacity grading and matching. The preparation method of the lithium battery comprises the following steps: obtaining the battery cell and the aluminum plastic shell; carrying out shell entering treatment on the battery cell so as to enable the battery cell to be accommodated in the punching pit of the aluminum plastic shell; the battery cell is marked, so that an electronic tag is contained in the punching pit of the aluminum-plastic shell, the electronic tag is tightly attached to the aluminum-plastic shell and the battery cell, and single bar code information is written into the electronic tag; carrying out heat sealing treatment on the aluminum-plastic shell, so that the battery cell and the electronic tag are sealed in the aluminum-plastic shell together to obtain a pretreated battery; and performing liquid injection, formation and capacity grading operation on the pretreated battery. According to the preparation method of the lithium battery, battery formation and capacity grading parameters can be effectively traced, so that the accuracy of battery grouping data is improved.

Description

Technical Field

[0001] This invention relates to the field of battery processing technology, and in particular to a method for preparing a lithium battery and a management method based on battery capacity allocation groups. Background Technology

[0002] The composition and capacity data of lithium-ion batteries are important parameters for verifying the quality grade of batteries and also important parameters for battery pack matching.

[0003] Especially for small and irregularly shaped batteries, which cannot be printed due to limited space, capacity-classifying parameters are obtained in the formation and capacity-testing cabinet. These parameters include the battery's actual capacity, internal resistance, and self-discharge rate. Then, the entire cabinet or individual point data reports need to be manually exported from the formation and capacity-testing software. Next, the set capacity-classifying parameter range is manually entered into the cabinet to illuminate the cabinet's indicator lights. Finally, the lithium batteries corresponding to the illuminated indicator lights are manually removed and placed in a centralized battery storage and turnover box. The placement of identification cards in the turnover boxes is to record the capacity assessment parameters corresponding to the centralized placement of batteries. Since the handling and placement are done manually, it is easy to mistakenly remove other batteries near the lithium battery whose cabinet indicator light is lit, or to mistakenly place the lithium battery whose cabinet indicator light is lit into a nearby battery turnover box. Once a battery is removed from the capacity assessment cabinet, it is impossible to determine which recorded capacity assessment parameter it matches, making it impossible to trace the battery's capacity assessment parameters, which significantly affects the accuracy of the battery pairing data. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for preparing lithium batteries that can effectively trace battery composition and capacity parameters, thereby improving the accuracy of battery grouping data, as well as a management method based on battery composition and grouping.

[0005] The objective of this invention is achieved through the following technical solution: A method for preparing a lithium battery includes the following steps: Obtain battery cells and aluminum-plastic casings; The battery cell is subjected to a casing process so that it is housed within the recess of the aluminum-plastic casing; The battery cell is tagged so that an electronic tag is placed in the perforation of the aluminum-plastic shell, and the electronic tag is closely attached to the aluminum-plastic shell and the battery cell respectively. The electronic tag is written with a unique barcode information. The aluminum-plastic shell is heat-sealed to seal the battery cell and the electronic tag together inside the aluminum-plastic shell, thus obtaining a pre-treated battery. The pretreated battery is subjected to a liquid injection formation operation.

[0006] In one embodiment, the surface of the electronic tag is covered with a heat-resistant and corrosion-resistant plastic sealing film.

[0007] In one embodiment, the heat-resistant and corrosion-resistant sealing film is a PET heat-shrinkable film or a POF heat-shrinkable film.

[0008] In one embodiment, the electronic tag is sealed in the end of the aluminum-plastic shell away from the top sealing edge, and the two sides of the electronic tag are closely attached to the end face of the battery cell and the aluminum-plastic shell respectively.

[0009] In one embodiment, the electronic tag is a flexible electronic tag.

[0010] In one embodiment, the thickness of the electronic tag is 0.1mm to 0.2mm.

[0011] In one embodiment, the projection of the electronic tag onto the end face of the battery cell is located within the area enclosed by the periphery of the end face of the battery cell.

[0012] In one embodiment, the electronic tag is an IC electronic tag, a UID electronic tag, a CUID electronic tag, or a UFUID electronic tag.

[0013] A battery capacity-grouping management method is provided for managing lithium batteries prepared by the methods described in any of the above embodiments by capacity-grouping. The battery capacity-grouping management method includes the following steps: The decomposition and capacity trays are subjected to card placement processing so that each decomposition and capacity tray is equipped with a memory card, and each memory card is written with unique card number information. The formation and capacity trays are loaded and bound so that each formation and capacity tray is loaded with at least two lithium batteries. The card number information of each formation and capacity tray is read and the barcode information of the corresponding lithium battery is entered and bound. The formulation trays are bound to the cabinet so that each formulation tray is placed at a workstation of the formulation cabinet. The card number information of each formulation tray is read and bound to the software data of the formulation cabinet. The software data includes the cabinet number, cabinet location, and formulation step of the formulation cabinet. The lithium battery is subjected to formation and capacity testing according to the software data to obtain the formation and capacity parameters of each lithium battery corresponding to each formation and capacity testing tray.

[0014] In one embodiment, the memory card is an IC memory card, a UID memory card, a CUID memory card, or a UFUID memory card.

[0015] In one embodiment, a barcode information is written into an electronic tag using a card reader by sending a command via a serial port.

[0016] In one embodiment, the batching and capacity tray is loaded and bound, and the specific steps are as follows: The formation and capacity trays are loaded such that each formation and capacity tray contains at least two of the lithium batteries. A tray binding machine is used to identify and read the loaded and processed batching tray so that the card reader can identify and obtain the card number information of the batching tray; A tray binding machine is used to perform inductive reading of lithium batteries, so that the card reader can sequentially sense and read the barcode information of at least two lithium batteries corresponding to the capacity forming tray; The formation and capacity trays after the sensing and reading process are bound to the card reader via a serial port. The card reader sequentially writes the barcode information of at least two lithium batteries corresponding to the formation and capacity trays into the memory card of the corresponding formation and capacity trays, so that the card number information of each formation and capacity tray is read and the barcode information of each corresponding lithium battery is bound to it.

[0017] Compared with the prior art, the present invention has at least the following advantages: The lithium battery manufacturing method of the present invention involves placing the battery cell in the perforation of an aluminum-plastic shell, followed by placing an electronic tag along with the battery cell in the perforation of the aluminum-plastic shell. The electronic tag is controlled to be tightly attached to both the aluminum-plastic shell and the battery cell, thus achieving initial positioning and fixation of the electronic tag through the aluminum-plastic shell and the battery cell. After the electronic tag is positioned and fixed, the aluminum-plastic shell is heat-sealed, which facilitates the stable sealing of the electronic tag within the aluminum-plastic shell. Furthermore, the electronic tag contains a unique barcode, enabling the identification and reading of the corresponding lithium battery's identity information. This effectively achieves traceability of the lithium battery's formation and capacity parameters, thereby improving the accuracy of the lithium battery pack data. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of lithium ions after calibration in the preparation method of a lithium battery according to an embodiment of the present invention. Figure 2 for Figure 1 A partial view of lithium ions shown; Figure 3 for Figure 2 A magnified view of a portion of the lithium ion at point A; Figure 4 for Figure 1 Another partial view of lithium ions is shown. Figure 5 for Figure 1 A partial cross-sectional view of lithium ions shown. Figure 6 This is a cross-sectional view of lithium ions after heat sealing in a lithium battery preparation method according to an embodiment of the present invention. Figure 7 for Figure 6 A partial view of lithium ions is shown. Detailed Implementation

[0020] The present application will be further described in detail below with reference to the embodiments and examples. It should be understood that these embodiments and examples are for illustrative purposes only and are not intended to limit the scope of the present application. The purpose of providing these embodiments and examples is to enable a more thorough and comprehensive understanding of the disclosure of the present application. It should also be understood that the present application can be implemented in many different forms and is not limited to the embodiments and examples described herein. Those skilled in the art can make various modifications or alterations without departing from the spirit of the present application, and the equivalent forms obtained also fall within the protection scope of the present application. Furthermore, numerous specific details are set forth in the following description to provide a fuller understanding of the present application. It should be understood that the present application can be implemented without one or more of these details.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] In this invention, the technical features described in an open-ended manner include both closed-ended technical solutions composed of the listed features and open-ended technical solutions that include the listed features.

[0023] In this invention, numerical intervals (i.e., numerical ranges) are involved. Unless otherwise specified, the selected numerical distributions within the aforementioned numerical intervals are considered continuous, and include the two endpoints (i.e., the minimum and maximum values) of the numerical range, as well as every value between these two endpoints. Unless otherwise specified, when a numerical interval refers only to integers within that interval, it includes the two endpoint integers of the numerical range, as well as every integer between the two endpoints. In this document, this is equivalent to directly listing every integer. For example, if t is an integer selected from 1 to 10, it means that t is any integer selected from the group of integers consisting of 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. Furthermore, when multiple ranges are provided to describe features or characteristics, these ranges can be merged. In other words, unless otherwise specified, the ranges disclosed herein should be understood to include any and all subranges to which they are included.

[0024] Unless otherwise specified, the temperature parameters in this invention can be either constant temperature treatment or vary within a certain temperature range. It should be understood that constant temperature treatment allows temperature fluctuations within the precision range controlled by the instrument. Fluctuations are permitted within ranges such as ±5℃, ±4℃, ±3℃, ±2℃, and ±1℃.

[0025] This application provides a method for preparing a lithium battery. The method includes the following steps: obtaining a battery cell and an aluminum-plastic casing; performing a casing treatment on the battery cell so that the battery cell is housed in a perforation within the aluminum-plastic casing; performing a tagging treatment on the battery cell so that an electronic tag is placed in the perforation of the aluminum-plastic casing, and the electronic tag is tightly attached to both the aluminum-plastic casing and the battery cell, and the electronic tag contains a unique barcode information; performing a heat-sealing treatment on the aluminum-plastic casing so that the battery cell and the electronic tag are sealed together inside the aluminum-plastic casing to obtain a pretreated battery; and performing a liquid injection formation operation on the pretreated battery.

[0026] To better understand the preparation method of the lithium battery of this application, the following further explanation is provided: One embodiment of the lithium battery preparation method includes the following steps: S100, please refer to it as well. Figures 1-2 , and obtain battery cell 100 and aluminum-plastic shell 200.

[0027] S200, please refer to it as well. Figures 2-5 The battery cell 100 is then housed in the casing so that it is contained within the recess 201 of the aluminum-plastic casing 200.

[0028] S300, please refer to it as well. Figures 2-5The battery cell 100 is tagged so that the hole 201 of the aluminum-plastic shell 200 contains an electronic tag 300, and the electronic tag 300 is closely attached to the aluminum-plastic shell 200 and the battery cell 100 respectively. The electronic tag 300 is written with a unique barcode information. It is understandable that after the battery cell 100 is placed in the perforation 201 of the aluminum-plastic shell 200, the electronic tag 300 is then placed in the perforation 201 of the aluminum-plastic shell 200 along with the battery cell 100. The electronic tag 300 is controlled to be tightly attached to both the aluminum-plastic shell 200 and the battery cell 100. That is, the initial positioning and fixation of the electronic tag 300 is achieved through the aluminum-plastic shell 200 and the battery cell 100. After the electronic tag 300 is positioned and fixed, the aluminum-plastic shell 200 is heat-sealed. This is beneficial for the stable sealing of the electronic tag 300 within the aluminum-plastic shell 200. Furthermore, the electronic tag 300 is written with a unique barcode information, which enables the identification and reading of the corresponding lithium battery's identity information. This effectively realizes the traceability of the lithium battery's formation and capacity parameters, thereby improving the accuracy of lithium battery grouping data.

[0029] S400, please refer to it as well. Figures 6-7 The aluminum-plastic casing 200 is heat-sealed to seal the battery cell 100 and the electronic tag 300 together within it, resulting in a pre-treated battery. It can be understood that heat sealing after the electronic tag 300 is positioned and fixed between the battery cell 100 and the aluminum-plastic casing 200 effectively ensures the stable and identifiable presence of the electronic tag 300 within the lithium battery. This better enables traceability of the lithium battery's formation and capacity parameters, thereby improving the accuracy of lithium battery packing data.

[0030] S500 performs liquid injection formation operation on pretreated batteries.

[0031] In the above-described lithium battery manufacturing method, after the battery cell 100 is placed in the perforation 201 of the aluminum-plastic shell 200, the electronic tag 300 is then placed together with the battery cell 100 in the perforation 201 of the aluminum-plastic shell 200. The electronic tag 300 is controlled to be tightly attached to both the aluminum-plastic shell 200 and the battery cell 100. That is, the aluminum-plastic shell 200 and the battery cell 100 achieve the initial positioning and fixation of the electronic tag 300. After the electronic tag 300 is positioned and fixed, the aluminum-plastic shell 200 is heat-sealed. This facilitates the stable sealing of the electronic tag 300 within the aluminum-plastic shell 200. Furthermore, the electronic tag 300 is written with a unique barcode information, which enables the identification and reading of the corresponding lithium battery's identity information. This effectively achieves the traceability of the lithium battery's formation and capacity parameters, thereby improving the accuracy of lithium battery grouping data.

[0032] It is understandable that the inkjet printing on the battery cell is exposed on the surface of the aluminum-plastic shell, which can easily cause scratches, blurring when exposed to solvents such as electrolytes / alcohol, and overlapping inkjet dots that prevent scanning. Therefore, placing the electronic tag 300 together with the battery cell 100 in the groove 201 of the aluminum-plastic shell 200 effectively avoids the problems of scratches, blurring, and overlapping inkjet dots caused by the inkjet printing on the surface of the aluminum-plastic shell, thereby effectively improving the stability of barcode information recognition and reading of the battery cell.

[0033] Please refer to the following: Figures 2-5 In one embodiment, the electronic tag 300 is sealed in the end of the aluminum-plastic shell 200 away from the top sealing edge 220, and both sides of the electronic tag 300 are tightly attached to the end face of the battery cell 100 and the aluminum-plastic shell 200 respectively. It can be understood that because the space at the end of the aluminum-plastic shell 200 from the top sealing edge 220 is small and does not affect the heat sealing of the tabs, it helps to reduce the movement space of the electronic tag 300 within the aluminum-plastic shell 200. Furthermore, the partially protruding diaphragm at the end of the battery cell 100 helps to limit the position of the electronic tag 300, thereby improving the stability of the electronic tag 300 within the aluminum-plastic shell 200 and reducing the impact on the electrochemical performance of the lithium battery.

[0034] Please refer to the following: Figures 6-7 In one embodiment, the surface of the electronic tag 300 is covered with a heat-resistant and corrosion-resistant plastic sealing separator 400. Further, the heat-resistant and corrosion-resistant plastic sealing separator 400 is a PET heat-shrinkable film or a POF heat-shrinkable film. It is understood that an electrolyte needs to be filled into the aluminum-plastic shell 200, and the electrolyte is corrosive. Therefore, covering the surface of the electronic tag 300 with the heat-resistant and corrosion-resistant plastic sealing separator 400, which is either a PET heat-shrinkable film or a POF heat-shrinkable film, effectively ensures the high-temperature resistance and corrosion resistance of the electronic tag 300, thereby ensuring the stability of the electronic tag 300's identification and reading, and further reducing the impact on the electrochemical performance of the lithium battery.

[0035] Please refer to the following: Figures 6-7It is understandable that although the two sides of the electronic tag 300 are made to fit tightly against the end face of the battery cell 100 and the aluminum-plastic shell 200, the filling of electrolyte and the protrusion of the diaphragm at the end face of the battery cell 100 will still cause the electronic tag 300 to move within the aluminum-plastic shell 200. Even if the surface of the electronic tag 300 is further coated with a heat-resistant and corrosion-resistant plastic sealing film 400, which not only achieves heat and corrosion resistance but also reduces the wear of the electronic tag 300 on the end face of the battery cell 100, if the electronic tag 300 is tightly clamped between the end of the battery cell 100 and the aluminum-plastic shell 200, it will cause wear on the end of the battery cell 100. Electrolyte penetration creates a shielding effect, affecting the battery's initial efficiency and capacity. To effectively fix the electronic tag 300 within the aluminum-plastic shell 200 while reducing the shielding effect of the electronic tag 300 on the end of the battery cell 100, in one embodiment, a fixing piece 500 protrudes from the side of the heat-resistant and corrosion-resistant plastic sealant 400 away from the end of the battery cell 100. The fixing piece 500 is sandwiched between the two side walls of the aluminum-plastic shell 200, and during the heat-sealing process, the fixing piece 500 forms a heat-sealed edge with the aluminum-plastic shell 200, and the heat-resistant and corrosion-resistant plastic sealant 400 is tightly attached to the aluminum-plastic shell 200. Further, the fixing piece 500 forms a bottom sealing edge 210 with the aluminum-plastic shell 200. Further, the length of the fixing piece 500 protruding from the heat-resistant and corrosion-resistant plastic sealant 400 is less than the width of the bottom sealing edge 210. Furthermore, the plane of the fixing piece 500 is parallel to the plane of the bottom sealing edge 210. Furthermore, the heat-resistant and corrosion-resistant plastic-encapsulated separator 400 has multiple insertion strips 600 protruding from one side near the end of the battery cell 100. These insertion strips 600 are evenly distributed around the periphery of the electronic tag 300, and each strip is partially inserted into the battery cell 100 to maintain the distance between the heat-resistant and corrosion-resistant plastic-encapsulated separator 400 and the end of the battery cell 100, or to maintain a tight fit between the heat-resistant and corrosion-resistant plastic-encapsulated separator 400 and the aluminum-plastic shell 200. Furthermore, the insertion strips 600, the fixing piece 500, and the heat-resistant and corrosion-resistant plastic-encapsulated separator 400 are made of the same material. Furthermore, the insertion strips 600, the fixing piece 500, and the heat-resistant and corrosion-resistant plastic-encapsulated separator 400 are integrally molded structures.It is understandable that the end of the battery cell 100 near the electronic tag 300 is also heat-sealed to form a bottom sealing edge 210. The bottom sealing edge 210 and the top sealing edge 220 are located at the two ends of the battery cell 100, respectively. This causes the electronic tag 300 to be fixed to the bottom sealing edge 210 by the fixing piece 500, effectively improving the limiting and fixing effect of the electronic tag 300 within the aluminum-plastic shell 200. Furthermore, it ensures that the heat-resistant and corrosion-resistant plastic sealing film 400 adheres tightly to the aluminum-plastic shell 200, effectively reducing the obstruction of the battery cell 100 end by the electronic tag 300. In addition, the insertion strips 600 are evenly distributed around the periphery of the electronic tag 300, and multiple insertion strips 600 are partially inserted into the battery cell 100. Each connector strip 600 extends into the battery cell 100 and is sandwiched between the positive electrode and the separator or between the negative electrode and the separator to maintain the distance between the heat-resistant and corrosion-resistant plastic-encapsulated separator 400 and the end of the battery cell 100, or to maintain the tight adhesion between the heat-resistant and corrosion-resistant plastic-encapsulated separator 400 and the aluminum-plastic shell 200. This causes the electronic tag 300 to be fixed to the end of the battery cell 100 by the connector strip 600. In this way, the periphery of the electronic tag 300 is relatively fixed relative to the end of the battery cell 100. In addition, the connector strip 600 also prevents the electronic tag 300 from getting too close to the end of the battery cell 100, thus reducing the obstruction of the end of the battery cell 100 by the electronic tag 300.

[0036] Please refer to the following: Figures 6-7 In one embodiment, the electronic tag 300 is a flexible electronic tag. Further, the thickness of the electronic tag 300 is 0.1mm~0.2mm. Further, the projection of the electronic tag 300 onto the end face of the battery cell 100 is located within the area enclosed by the periphery of the end face of the battery cell 100. It is understood that the flexible electronic tag 300 can be bent and folded, which facilitates a tight fit between the aluminum-plastic shell 200 and the end of the battery cell 100, preventing situations where placement is impossible or the adhesion effect is poor due to space limitations, and avoiding the electronic tag 300 lifting or falling off, thus affecting identification and reading. Further, the electronic tag 300 is an IC electronic tag 300, a UID electronic tag 300, a CUID electronic tag 300, or a UFUID electronic tag 300.

[0037] This application also provides a battery capacity-grouping management method for managing lithium batteries prepared by the lithium battery preparation methods of any of the above embodiments. The above-described battery capacity-grouping management method includes the following steps: card placement processing of the formation and capacity-grouping trays, so that each formation and capacity-grouping tray is equipped with a memory card, and each memory card is written with unique card number information; loading and binding processing of the formation and capacity-grouping trays, so that each formation and capacity-grouping tray is loaded with at least two lithium batteries, and the card number information of each formation and capacity-grouping tray is read and entered into the barcode information of the corresponding lithium battery; cabinet binding processing of the formation and capacity-grouping trays, so that each formation and capacity-grouping tray is placed at a workstation in the formation and capacity-grouping cabinet, and the card number information of each formation and capacity-grouping tray is read and bound to the software data of the formation and capacity-grouping cabinet, the software data including the cabinet number, cabinet location, and formation and capacity-grouping steps of the formation and capacity-grouping cabinet; and formation and capacity-grouping processing of the lithium batteries according to the software data to obtain the formation and capacity-grouping parameters of each lithium battery corresponding to each formation and capacity-grouping tray.

[0038] To better understand the battery capacity allocation group-based management method of this application, the following further explanation is provided: One embodiment of the battery capacity allocation group management method includes the following steps: S010. Perform card placement processing on the batching and capacity-delivery trays so that each batching and capacity-delivery tray is equipped with a memory card, and each memory card is written with a unique card number. It can be understood that assembling memory cards on the batching and capacity-delivery trays and writing unique card number information on each memory card enables the batching and capacity-delivery trays to be identifiable and readable.

[0039] S020. Load and bind the formation and capacity testing trays so that each tray contains at least two lithium batteries. The card number information of each tray is read and entered into the barcode information of the corresponding lithium battery. This means reading and writing the barcode information of all lithium batteries on the tray into the tray's memory card. This allows the tray to be used in the formation and capacity testing cabinet when it enters the cabinet. While the barcode information of the lithium batteries on the tray is relatively easy to read, the cabinet requires significant adjustments to its layout, leading to a substantial increase in management costs.

[0040] S030. Perform cabinet binding processing on the formation and capacity trays so that each formation and capacity tray is placed at a workstation in the formation and capacity cabinet. Read the card number information of each formation and capacity tray and bind it to the software data of the formation and capacity cabinet. The software data includes the cabinet number, cabinet location, formation and capacity steps, detailed data and curves of the formation and capacity battery. It is understandable that the formation and capacity testing cabinet has multiple workstations, which are integrated through software data. Specifically, this includes the cabinet number, cabinet location, formation and capacity testing steps, detailed data and curves of the formation and capacity testing batteries, so as to form and record the formation and capacity testing parameters of the lithium batteries at a specific cabinet number and cabinet location. This causes the formation and capacity testing tray to be bound to the barcode information of all the lithium batteries on it. In this way, the formation and capacity testing cabinet can identify and read the barcode information of multiple lithium batteries and bind them to the software parameters, thereby realizing the one-to-one integration of the formation and capacity testing parameters of each lithium battery. This allows the corresponding capacity testing parameters to be obtained after identifying and reading the barcode information of the lithium battery, which improves the efficiency and accuracy of lithium battery matching, thereby improving the quality and management level of battery matching; in addition, it also facilitates the automatic matching of batteries.

[0041] S040. Perform formation and capacity testing on the lithium batteries according to the software data to obtain the formation and capacity parameters of each lithium battery corresponding to each formation and capacity testing tray.

[0042] It is understandable that assembling memory cards on the formation and capacity testing trays, with each memory card containing a unique card number, enables the identification and reading of the formation and capacity testing trays. This is combined with reading and writing the barcode information of all lithium batteries placed on the trays into the memory cards on the trays. This allows the card number information of each formation and capacity testing tray to be read and linked to the barcode information of each corresponding lithium battery. When the formation and capacity testing trays enter the formation and capacity testing cabinet, simply reading the card number information of the tray is sufficient to obtain the barcode information of all lithium batteries on that tray. This allows the formation and capacity testing cabinet to identify and read the barcode information of multiple lithium batteries, thus binding them to software parameters. This achieves a one-to-one correspondence between the formation and capacity testing parameters of each lithium battery, enabling the corresponding capacity testing parameters to be obtained immediately after reading the barcode information of the lithium batteries. This significantly improves the efficiency and accuracy of lithium battery matching, thereby improving the quality and management level of battery matching. Furthermore, it also facilitates automatic battery matching.

[0043] In one embodiment, the memory card is an IC memory card, a UID memory card, a CUID memory card, or a UFUID memory card. Further, a card reader writes the barcode information into the electronic tag by sending commands via a serial port.

[0044] In one embodiment, the batching and capacity tray is loaded and bound, and the specific steps are as follows: The formation and capacity trays are loaded so that each tray contains at least two lithium batteries. This reduces the amount of card information that needs to be read within the formation and capacity cabinet. Reading the card information of the formation and capacity tray effectively binds the barcode information of at least two lithium batteries, reducing the number of reads required in the cabinet and consequently reducing the number of card readers needed, thus lowering the management cost of the battery formation and capacity assembly.

[0045] Furthermore, a tray binding machine is used to identify and read the loaded chemical separation tray so that the card reader can identify and obtain the card number information of the chemical separation tray.

[0046] Furthermore, a binding machine is used to perform sensor reading processing on the lithium batteries, so that the card reader can sequentially sense and read the barcode information of at least two lithium batteries corresponding to the capacity forming tray.

[0047] Furthermore, the formation and capacity trays after induction reading are bound to the card reader via a serial port. The card reader sequentially writes the barcode information of at least two lithium batteries corresponding to the formation and capacity trays into the memory card of the corresponding formation and capacity trays, so that the card number information of each formation and capacity tray is read and the barcode information of each corresponding lithium battery is bound to it.

[0048] This can be understood as follows: after sensing and reading the barcode information of multiple lithium batteries, the information is written into the storage card of the corresponding formation and capacity tray, thus realizing the binding of the card number information of the formation and capacity tray with the barcode information of multiple lithium batteries.

[0049] Compared with the prior art, the present invention has at least the following advantages: The battery capacity and grouping management method of the present invention involves placing the battery cell 100 into the perforation 201 of the aluminum-plastic shell 200, and then placing the electronic tag 300 together with the battery cell 100 into the perforation 201 of the aluminum-plastic shell 200. The electronic tag 300 is controlled to be tightly attached to both the aluminum-plastic shell 200 and the battery cell 100, thus achieving initial positioning and fixation of the electronic tag 300 through the aluminum-plastic shell 200 and the battery cell 100. After the electronic tag 300 is positioned and fixed, the aluminum-plastic shell 200 is heat-sealed, which facilitates the stable sealing of the electronic tag 300 within the aluminum-plastic shell 200. Furthermore, the electronic tag 300 contains a unique barcode, enabling the identification and reading of the corresponding lithium battery's identity information. This effectively achieves traceability of the lithium battery's formation and capacity parameters, thereby improving the accuracy of battery grouping data.

[0050] The embodiments described above merely illustrate several implementation methods of this application to facilitate a detailed understanding of the technical solutions of this application, but should not be construed as limiting the scope of protection of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Furthermore, it should be understood that after reading the above teachings of this application, those skilled in the art can make various alterations or modifications to this application, and the equivalent forms obtained also fall within the scope of protection of this application. It should also be understood that technical solutions obtained by those skilled in the art based on the technical solutions provided in this application through logical analysis, reasoning, or limited experimentation are all within the scope of protection of the appended claims. Therefore, the scope of protection of this patent application should be determined by the content of the appended claims, and the specification and drawings can be used to interpret the content of the claims.

Claims

1. A method for preparing a lithium battery, characterized in that, Includes the following steps: Obtain battery cells and aluminum-plastic casings; The battery cell is subjected to a casing process so that it is housed within the recess of the aluminum-plastic casing; The battery cell is tagged so that an electronic tag is placed in the perforation of the aluminum-plastic shell, and the electronic tag is closely attached to the aluminum-plastic shell and the battery cell respectively. The electronic tag is written with a unique barcode information. The aluminum-plastic shell is heat-sealed to seal the battery cell and the electronic tag together inside the aluminum-plastic shell, thus obtaining a pre-treated battery. The pretreated battery is subjected to a liquid injection formation operation.

2. The method for preparing a lithium battery according to claim 1, characterized in that, The surface of the electronic tag is covered with a heat-resistant and corrosion-resistant plastic sealing film.

3. The method for preparing a lithium battery according to claim 2, characterized in that, The heat-resistant and corrosion-resistant plastic sealing film is a PET heat-shrinkable film or a POF heat-shrinkable film.

4. The method for preparing a lithium battery according to claim 1, characterized in that, The electronic tag is sealed at the end of the aluminum-plastic shell away from the top sealing edge, and the two sides of the electronic tag are closely attached to the end face of the battery cell and the aluminum-plastic shell in a one-to-one correspondence.

5. The method for preparing a lithium battery according to claim 1, characterized in that, The electronic tag is a flexible electronic tag.

6. The method for preparing a lithium battery according to claim 1, characterized in that, The thickness of the electronic tag is 0.1mm~0.2mm; and / or, The projection of the electronic tag onto the end face of the battery cell is located within the area enclosed by the periphery of the end face of the battery cell.

7. The method for preparing a lithium battery according to any one of claims 1 to 6, characterized in that, The electronic tag is an IC electronic tag, UID electronic tag, CUID electronic tag, or UFUID electronic tag.

8. A management method based on battery capacity allocation groups, characterized in that, The lithium batteries prepared by the method of any one of claims 1 to 7 shall be subject to capacity allocation and group management. The management method based on battery capacity allocation groups includes the following steps: The decomposition and capacity trays are subjected to card placement processing so that each decomposition and capacity tray is equipped with a memory card, and each memory card is written with unique card number information. The formation and capacity trays are loaded and bound so that each formation and capacity tray is loaded with at least two lithium batteries. The card number information of each formation and capacity tray is read and the barcode information of the corresponding lithium battery is entered and bound. The formulation and filling trays are bound to the cabinet so that each formulation and filling tray is placed at a workstation of the formulation and filling cabinet. The card number information of each formulation and filling tray is read and bound to the software data of the formulation and filling cabinet. The software data includes the cabinet number, cabinet location, and formulation and filling steps of the formulation / filling cabinet. The lithium battery is subjected to formation and capacity testing according to the software data to obtain the formation and capacity parameters of each lithium battery corresponding to each formation and capacity testing tray.

9. The management method based on battery capacity allocation groups according to claim 8, characterized in that, The memory card can be an IC memory card, a UID memory card, a CUID memory card, or a UFUID memory card.

10. The management method based on battery capacity allocation groups according to claim 8, characterized in that, Sending commands via serial port to write barcode information into electronic tags using a card reader; and / or, The specific steps for loading and binding the decomposition tray are as follows: The formation and capacity trays are loaded such that each formation and capacity tray contains at least two of the lithium batteries. A tray binding machine is used to identify and read the loaded and processed chemically synthesized container tray so that the card reader can identify and obtain the card number information of the chemically synthesized container tray; A tray binding machine is used to perform inductive reading of lithium batteries, so that the card reader sequentially senses and reads the barcode information of at least two lithium batteries corresponding to the capacity forming tray; The formation and capacity trays after the sensing and reading process are bound to the card reader via a serial port. The card reader sequentially writes the barcode information of at least two lithium batteries corresponding to the formation and capacity trays into the memory card of the corresponding formation and capacity trays, so that the card number information of each formation and capacity tray is read and the barcode information of each corresponding lithium battery is bound to it.

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