Polar Plate Laminating Method, Apparatus and Laminator

Abstract

The present application provides a method, apparatus and machine for stacking electrodes, which can effectively reduce a waste rate of battery cells. The method includes: determining a conveying sequence for conveying a plurality of second electrodes based on a first electrode plate, the first electrode plate being a continuous electrode plate, the plurality of second electrodes including at least one upper electrode plate and at least one lower electrode plate, the plurality of second electrodes being discontinuous electrodes, the conveying sequence being for conveying the at least one upper electrode plate and the at least one lower electrode plate alternately; generating an identifier sequence for the plurality of second electrodes based on the conveying sequence; and collecting first image data for each second electrode plate among the plurality of second electrodes based on the identifier sequence during the process of conveying the plurality of second electrodes based on the conveying sequence.

Description

[Technical Field]

[0001] The present application relates to the field of power batteries, and in particular to a method, apparatus and machine for laminating electrodes. [Background technology]

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. In this context, electric vehicles have become an important component of the sustainable development of the automotive industry due to their energy-saving and environmental advantages. For electric vehicles, battery technology is a key factor in their development.

[0003] One of the core manufacturing processes for power batteries is the stacking process, and in the production process of the stacking process, the components are generally stacked from bottom to top in the order of negative electrode plate, separator, positive electrode plate, separator, negative electrode plate, etc., or from bottom to top in the order of positive electrode plate, separator, negative electrode plate, separator, positive electrode plate, etc. If an abnormality occurs in the battery cell after stacking is completed and the battery cell is assembled, it is not possible to determine which electrode plate has the problem, so it may be necessary to replace the entire battery cell, resulting in a problem of a high rate of battery cell waste. Summary of the Invention

[0004] The embodiments of the present application provide a method, apparatus, and machine for stacking electrode plates, which can effectively reduce the waste rate of battery cells.

[0005] According to a first aspect, a method for stacking electrode plates is provided. The method includes determining a conveyance order for conveying a plurality of second electrode plates based on a first electrode plate, where the first electrode plate is a continuous electrode plate, the plurality of second electrode plates include at least one upper electrode plate and at least one lower electrode plate, the plurality of second electrode plates are discontinuous electrode plates, and the conveyance order is for alternately conveying the at least one upper electrode plate and the at least one lower electrode plate; generating an identifier sequence of the plurality of second electrode plates based on the conveyance order; and collecting first image data of each second electrode plate among the plurality of second electrode plates based on the identifier sequence in the process of conveying the plurality of second electrode plates based on the conveyance order.

[0006] In an embodiment of the present application, an identifier sequence of the second electrode plates is generated based on the conveyance order of the second electrode plates. In the process of conveying the second electrode plates based on the conveyance order, the image data of each second electrode plate is collected based on the identifier sequence of the second electrode plates, so that the collected image data of each second electrode plate is associated with its own identifier sequence. In this way, when an abnormality occurs in a battery cell, based on the collected image data and the identifier sequence of the corresponding second electrode plate, it can be determined specifically which electrode plate has an abnormality, and further, processing can be performed on the electrode plate with the abnormality, without the need to replace the entire battery cell, and the waste rate of the battery cell can be significantly reduced.

[0007] Furthermore, the first electrode plate is a continuous electrode plate. Compared with cutting the electrode plate into sheet materials and then stacking them, the first electrode plate in the embodiment of the present application does not need to be cut, effectively improving the efficiency of subsequent stacking. And because the first electrode plate is a continuous electrode plate, when stacking the first electrode plate and the second electrode plate in this way, the positional relationship between the first electrode plate and the second electrode plate can be better controlled, which is beneficial to improving the accuracy between the first electrode plate and the second electrode plate. In addition, due to the improved accuracy, it becomes possible to limit the positional relationship between the first electrode plate and the second electrode plate, and the energy density of the electrode plates of the same area becomes higher, thereby improving the energy density of the battery.

[0008] In some possible embodiments, the method further includes storing the identifier sequence and the first image data, where the identifier sequence and the first image data correspond one-to-one.

[0009] The above technical solution stores the identifier sequence and the first image data of the second electrode plate, so that retroactive search can be performed on the first image data of any second electrode plate. In this way, when an abnormality occurs in the battery cell, the electrode plate where the abnormality specifically occurs can be determined based on the directly stored identifier sequence and the first image data, which is not only easy to implement, but also effectively shortens the processing time.

[0010] In some possible embodiments, determining the conveying order of a plurality of second electrode plates based on the first electrode plate is to obtain the crease information of the first electrode plate, where the crease information is for indicating whether at least one crease on the first electrode plate is located on the upper surface or the lower surface of the first electrode plate, and determining the conveying order based on the crease information.

[0011] The above technical solution determines the conveying order of the upper electrode plate and the lower electrode plate of the second electrode plate based on the creases in the first electrode plate, which is easy to implement and can very intuitively determine the conveying order of the second electrode plate. On the other hand, there are multiple creases on the first electrode plate, facilitating subsequent folding.

[0012] In some possible embodiments, if the fold information is for instructing that the first fold among the at least one fold is located on the upper surface of the first electrode plate, then among the plurality of second electrode plates, the first one to be conveyed is the first upper electrode plate among the at least one upper electrode plate; if the fold information is for instructing that the first fold among the at least one fold is located on the lower surface of the first electrode plate, then among the plurality of second electrode plates, the first one to be conveyed is the conveyance of the first lower electrode plate among the at least one lower electrode plate.

[0013] In the above technical solution, when the fold is located on the upper surface of the first electrode plate, the first second electrode plate to be conveyed is the upper electrode plate; when the fold is located on the lower surface of the first electrode plate, the first second electrode plate to be conveyed is the lower electrode plate. In this way, the second electrode plate can cover the fold on the first electrode plate, thereby meeting the process production requirements.

[0014] In some possible embodiments, the method further includes generating a first identifier of the at least one upper electrode plate and a second identifier of the at least one lower electrode plate when cutting a continuous second electrode plate into the at least one upper electrode plate and the at least one lower electrode plate, storing the first identifier in a first stack list, and storing the second identifier in a second stack list.

[0015] The above technical solution stores the first identifier of the upper electrode plate and the second identifier of the lower electrode plate in different stack lists, preventing problems such as confusion between the first identifier and the second identifier, for example, misidentifying the first identifier as the second identifier and misidentifying the second identifier as the first identifier, which is advantageous for the progress of subsequent processes.

[0016] In some possible embodiments, generating the identifier sequence of the plurality of second electrode plates based on the conveying order includes alternately taking out the first identifier in the first stack list and the second identifier in the second stack list based on the conveying order, taking out the identifiers in the same stack list in the order of the previously stored retrieval order, and storing the taken-out first identifier and second identifier in a third stack list according to the order of alternately taking out the first identifier and the second identifier, wherein the sequence in the third stack list is the identifier sequence.

[0017] In some possible embodiments, the stacking method is used in a stacking machine, the stacking machine includes a first image acquisition device, and collecting the first image data of each second electrode plate among the plurality of second electrode plates based on the identifier sequence includes sequentially taking out the identifier sequence in the third stack list when conveying the second electrode plate, and triggering the first image acquisition device by the taken-out identifier sequence to cause the image acquisition device to collect the first image data.

[0018] In the above technical solution, the first identifier and the second identifier are alternately stored in the third stack list based on the conveying order of the second electrode plates, that is, the identifier sequence in the third stack list corresponds to the conveying order. In this way, when triggering the first image acquisition device to collect the first image data of the second electrode plate by the taken-out identifier sequence, the collected first image data also corresponds to the conveying order of the second electrode plates, which brings convenience to the processing of subsequent processes. Furthermore, by triggering the first image acquisition device to collect the first image data by the identifier sequence, a strong correlation is established between the first image data and the identifier sequence. In this way, when an abnormality occurs in the battery cell, it is possible to quickly determine specifically which electrode plate the abnormality has occurred based on the first image data and its related identifier sequence.

[0019] In some possible embodiments, the first image acquisition device includes a first sub-image acquisition device and a second sub-image acquisition device. Triggering the first image acquisition device by the identifier sequence after extraction to cause the image acquisition device to collect the first image data includes triggering the first sub-image acquisition device to collect the first image data if the extracted identifier is the first identifier in the identifier sequence, and triggering the second sub-image acquisition device to collect the first image data if the extracted identifier is the second identifier in the identifier sequence.

[0020] In some possible embodiments, acquiring the crease information of the first electrode plate includes detecting a cut hole on the first electrode plate, and when the cut hole on the first electrode plate is detected, triggering a second image acquisition device to collect second image data of the first electrode plate, where the second image data is for acquiring the crease information.

[0021] The above technical solution triggers a second image acquisition device to collect image data of the first electrode plate by detecting a cut hole on the first electrode plate. Since the cut hole is easy to detect, the problem that the second image acquisition device invalidly collects the image data of the first electrode plate due to false detection can be avoided, or the problem that the collection of the image data of the first electrode plate by the second image acquisition device is missed due to false detection can be avoided.

[0022] In some possible embodiments, the method further includes alternately conveying the at least one upper electrode plate and the at least one lower electrode plate based on the conveying order when the at least one crease reaches the conveying position of the plurality of second electrode plates.

[0023] When the fold on the first electrode plate arrives at the conveying position of the second electrode plate, at least one upper electrode plate and at least one lower electrode plate are conveyed alternately, which can ensure the accurate alignment between the second electrode plate and the first electrode plate and improve the accuracy of the battery cell.

[0024] In some possible implementation forms, the first electrode plate is a negative electrode plate, the second electrode plate is a positive electrode plate, the upper electrode plate is an upper positive electrode plate, and the lower electrode plate is a lower positive electrode plate.

[0025] The above technical solution installs the first electrode plate as a negative electrode plate and installs the second electrode plate as a positive electrode plate, which can meet the process production requirements and facilitate the lamination of the first electrode plate and the second electrode plate.

[0026] According to a second aspect, there is provided an electrode plate laminating device, which includes a processing unit for determining a conveying order for conveying a plurality of second electrode plates based on a first electrode plate, where the first electrode plate is a continuous electrode plate, the plurality of second electrode plates include at least one upper electrode plate and at least one lower electrode plate, the plurality of second electrode plates are discontinuous electrode plates, and the conveying order is for alternately conveying the at least one upper electrode plate and the at least one lower electrode plate; a generating unit for generating an identifier sequence of the plurality of second electrode plates based on the conveying order; and a collecting unit for collecting first image data of each second electrode plate among the plurality of second electrode plates based on the identifier sequence in the process of conveying the plurality of second electrode plates based on the conveying order.

[0027] In some possible implementation forms, the processing unit is further used to store the identifier sequence and the first image data, where the identifier sequence and the first image data correspond one-to-one.

[0028] In some possible embodiments, the processing unit is specifically configured to obtain the crease information of the first electrode plate, where the crease information is used to indicate whether at least one crease on the first electrode plate is located on the upper surface or the lower surface of the first electrode plate, and is used to determine the conveying order based on the crease information.

[0029] In some possible embodiments, if the crease information is used to indicate that the first crease among the at least one crease is located on the upper surface of the first electrode plate, then among the plurality of second electrode plates, the first one to be conveyed is the first upper electrode plate among the at least one upper electrode plate; if the crease information is used to indicate that the first crease among the at least one crease is located on the lower surface of the first electrode plate, then among the plurality of second electrode plates, the first one to be conveyed is the conveyance of the first lower electrode plate among the at least one lower electrode plate.

[0030] In some possible embodiments, the generating unit is further used to generate a first identifier of the at least one upper electrode plate and a second identifier of the at least one lower electrode plate when cutting a continuous second electrode plate into the at least one upper electrode plate and the at least one lower electrode plate, and the processing unit is further used to store the first identifier in a first stack list and store the second identifier in a second stack list.

[0031] In some possible embodiments, the processing unit is further configured to alternately retrieve the first identifier in the first stack list and the second identifier in the second stack list based on the transport order, where the identifiers in the same stack list are retrieved in the order of the previously stored retrieval destinations, and store the retrieved first identifier and second identifier in a third stack list according to the retrieval order of alternately retrieving the first identifier and the second identifier, where the sequence in the third stack list is the identifier sequence.

[0032] In some possible embodiments, the laminating device includes a first image acquisition device, and the processing unit is further configured to sequentially retrieve the identifier sequence in the third stack list when transporting the second electrode plate, and use the retrieved identifier sequence to trigger the first image acquisition device to collect the first image data by the image acquisition device.

[0033] In some possible embodiments, the first image acquisition device includes a first sub-image acquisition device and a second sub-image acquisition device. Specifically, the processing unit triggers the first sub-image acquisition device to collect the first image data if the retrieved identifier is the first identifier in the identifier sequence, and triggers the second sub-image acquisition device to collect the first image data if the retrieved identifier is the second identifier in the identifier sequence.

[0034] In some possible embodiments, the processing unit is specifically configured to detect a cut hole on the first electrode plate, and when the cut hole on the first electrode plate is detected, trigger a second image acquisition device to collect second image data of the first electrode plate, where the second image data is for obtaining the fold information.

[0035] In some possible embodiments, when the at least one fold reaches the conveying position of the plurality of second electrode plates, a conveying unit for alternately conveying the at least one upper electrode plate and the at least one lower electrode plate based on the conveying order is further included.

[0036] In some possible embodiments, the first electrode plate is a negative electrode plate, the second electrode plate is a positive electrode plate, the upper electrode plate is an upper positive electrode plate, and the lower electrode plate is a lower positive electrode plate.

[0037] According to a third aspect, a laminator is provided, which includes an electrode plate laminating device in the second aspect.

Brief Description of the Drawings

[0038] To more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on the drawings on the premise of not paying creative labor.

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Embodiments for Carrying Out the Invention

[0039] Hereinafter, the embodiments of the present application will be described in more detail by combining the drawings and examples. In the following, the detailed description of the examples and the drawings are for explaining the principle of the present application by way of example, but not for limiting the scope of the present application. That is, the present application is not limited to the described embodiments.

[0040] In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "a plurality" is two or more. The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is only for the convenience of description and simplification of the description of the present application, and does not indicate or imply that the referred device or element must have a specific orientation and be configured and operated in a specific orientation. Therefore, it should not be understood as a limitation to the present application. In addition, terms such as "first", "second", "third", etc. are only used for the purpose of description and should not be understood as indicating or implying relative importance. "Vertical" is not strictly vertical but within the allowable error range. "Parallel" is not strictly parallel but within the allowable error range.

[0041] In the following description, all terms indicating directions are those shown in the figures and do not limit the specific structure of the present application. In the description of the present application, it should be further noted that, unless otherwise clearly defined and limited, the terms "attachment", "connection", and "coupling" should be understood in a broad sense. For example, they may be fixed connections, removable connections, or integral connections, and may be direct connections or indirect connections through intermediate media. Those skilled in the art can understand the specific meanings of the above terms in the present application according to specific situations.

[0042] The term "and / or" in the present application only describes the relationship between related objects and indicates that three relationships may exist. For example, A and / or B may represent three cases: A, the combination of A and B, and B. Also, the character " / " in the present application generally represents that the related objects before and after are in an "or" relationship.

[0043] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the art belonging to the technical field of the present application. In the present application, the terms used in the specification of the application are only for describing specific embodiments and are not intended to limit the present application. The terms "comprising", "having" and any variations thereof in the specification, claims and description of the above drawings of the present application are intended to cover non-exclusive "comprising". The terms "first", "second", etc. in the specification, claims or the above drawings of the present application are not for describing a specific order or a primary-secondary relationship, but for distinguishing different objects.

[0044] As used in this application, the "Examples" mean that specific features, structures, or characteristics described in connection with the Examples may be included in at least one embodiment of this application. The appearance of this phrase at each position in the specification does not necessarily refer to all the same embodiments, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0045] In this application, "a plurality of" means two or more (including two), similarly, "a plurality of groups" means two or more groups (including two groups), "a plurality of sheets" means two or more sheets (including two sheets), and a plurality of rows means two or more rows (including two rows).

[0046] In the context of the automotive industry that uses conventional energy as the power supply, the problem of environmental pollution has become more serious. However, the active development of new energy vehicles can reduce the adverse impact on the environment. For new energy vehicles, battery technology is an important factor related to their development.

[0047] A battery is a physical module that includes one or more battery cells to provide electrical energy. For example, the battery mentioned in this application may include a battery module or a battery pack, etc. A battery generally includes a housing for packaging one or more battery cells. The housing can avoid the influence of liquid or other foreign substances on the charging or discharging of the battery cells.

[0048] Optionally, the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application do not limit this. In some embodiments, the battery cells may also be referred to as battery cores.

[0049] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode plate, a negative electrode plate and a separator. The battery cell mainly operates by the movement of metal ions between the positive electrode plate and the negative electrode plate. The positive electrode plate includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The positive electrode current collector without the positive electrode active material layer protrudes from the positive electrode current collector coated with the positive electrode active material layer. The positive electrode current collector without the positive electrode active material layer is used as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate, etc. The negative electrode plate includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector without the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector without the negative electrode active material layer is used as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon, etc. To ensure that it does not fuse even when a large current flows, the number of positive electrode tabs is plural and they are laminated, and the number of negative electrode tabs is plural and they are laminated. The material of the separator may be polypropylene (PP) or polyethylene (PE), etc.

[0050] Currently, as methods for manufacturing battery cells, there are mainly two types: the winding type and the stacking type. The winding type manufactures a battery cell by making the positive electrode plate and the negative electrode plate into continuous and long sheet shapes, separating them with a separator in between, and then winding them. The battery formed from this battery cell has a problem that stress concentrates at the bent portions of the electrode plates. If the expansion and contraction of the electrode plates due to charge and discharge accumulate over a long period, it may cause deformation of the electrode plates and affect the battery performance.

[0051] In the stacked type, the positive electrode plate and the negative electrode plate are mainly cut into single sheets respectively, the separator is wound in a Z shape, the positive electrode plate and the negative electrode plate are alternately stacked and arranged, and the space between them is isolated by the separator. The battery formed in this way has advantages such as low internal resistance, good cycle characteristics, and the ability to charge and discharge at a high rate, and is suitable as a power source, so it is attracting more and more attention.

[0052] However, after the stacking is completed and the battery cells are assembled, if an abnormality occurs in the battery cells, for example, a certain electrode plate in the battery cells is damaged, and it is impossible to determine specifically which electrode plate has a problem, the entire battery cells may have to be replaced, resulting in the problem of high discard rate of the battery cells.

[0053] In view of this, the embodiments of the present application provide a method for stacking electrode plates that can effectively reduce the discard rate of battery cells.

[0054] FIG. 1 shows a schematic flowchart of a method 100 for stacking electrode plates according to an embodiment of the present application. Optionally, the method 100 may be used in a stacking machine. The method 100 may include at least some of the following content.

[0055] 110. Based on the first electrode plate, determine a conveying order for conveying a plurality of second electrode plates. Here, the first electrode plate is a continuous electrode plate, the plurality of second electrode plates include at least one upper electrode plate and at least one lower electrode plate, the plurality of second electrode plates are discontinuous electrode plates, and the conveying order is for conveying at least one upper electrode plate and at least one lower electrode plate alternately.

[0056] 120. Generate an identifier sequence of the plurality of second electrode plates based on the conveying order.

[0057] 130. In the process of conveying a plurality of second electrode plates based on the conveying order, collect first image data of each second electrode plate among the plurality of second electrode plates based on the identifier sequence.

[0058] In an embodiment of the present application, an identifier sequence of the second electrode plate is generated based on the conveyance order of the second electrode plate. In the process of conveying the second electrode plate based on the conveyance order, image data of each second electrode plate is collected based on the identifier sequence of the second electrode plate, and the collected image data of each second electrode plate is associated with its own identifier sequence. In this way, when an abnormality occurs in the battery cell, based on the collected image data and the identifier sequence of the corresponding second electrode plate, it is possible to specifically determine which electrode plate the abnormality has occurred in, and further process the electrode plate with the abnormality, without the need to replace the entire battery cell, and significantly reduce the discard rate of the battery cell.

[0059] Furthermore, the first electrode plate is a continuous electrode plate. Compared with cutting the electrode plate into sheet materials and then laminating them, the first electrode plate in the embodiment of the present application does not need to be cut, effectively improving the efficiency of subsequent lamination. And because the first electrode plate is a continuous electrode plate, when laminating the first electrode plate and the second electrode plate in this way, the positional relationship between the first electrode plate and the second electrode plate can be better controlled, which is beneficial to improving the accuracy between the first electrode plate and the second electrode plate. In addition, due to the improved accuracy, it becomes possible to limit the positional relationship between the first electrode plate and the second electrode plate, and the energy density of the electrode plate with the same area becomes higher, thereby improving the energy density of the battery.

[0060] Optionally, the first image data may include, but is not limited to, the relative positions of each second electrode plate and the first electrode plate, the working positions where each second electrode plate is currently located, etc.

[0061] Optionally, the first electrode plate may be a negative electrode plate, the second electrode plate may be a positive electrode plate, the upper electrode plate may be an upper positive electrode plate, and the lower electrode plate may be a lower positive electrode plate.

[0062] Installing the first electrode plate as a negative electrode plate and the second electrode plate as a positive electrode plate can meet the process production requirements and facilitate the lamination of the first electrode plate and the second electrode plate.

[0063] It should be understood that the embodiments of the present application do not specifically limit the names of the negative electrode plate and the positive electrode plate, that is, they may be called by other names. For example, the positive electrode plate may be called the cathode plate, and the negative electrode plate may be called the anode plate.

[0064] Hereinafter, taking the first electrode plate as the negative electrode plate and the second electrode plate as the positive electrode plate as an example, the embodiments of the present application will be described. However, it should be understood that the embodiments of the present application are not limited thereto.

[0065] Optionally, in some embodiments, 110 may specifically include obtaining crease information on the negative electrode plate and determining the conveying order of a plurality of positive electrode plates based on the crease information. Here, the crease information is for indicating whether at least one crease on the negative electrode plate is located on the upper surface or the lower surface of the negative electrode plate.

[0066] Optionally, there may be a plurality of cut holes on the negative electrode plate, and the plurality of cut holes can form creases. The shape of the cut holes may be circular, rectangular, etc. The cut holes may be through holes. Exemplarily, the through holes may be holes opened on the electrode plate by a laser cutting head or a cutter, and are arranged in sequence at intervals along the width direction of the negative electrode plate and penetrate the negative electrode plate along its thickness direction.

[0067] Alternatively, the crease may be a region formed on the negative electrode plate with a thickness smaller than the thickness at other positions. For example, some regions of the negative electrode plate may be thinned, and the thinned regions can form creases on the negative electrode plate.

[0068] Optionally, obtaining the crease information of the negative electrode plate may specifically include detecting the cut holes on the negative electrode plate, and when the cut holes on the negative electrode plate are detected, triggering a second image acquisition device to collect second image data of the negative electrode plate. The second image data is for obtaining crease information.

[0069] For example, as shown in FIG. 2, when the negative electrode plate 201 passes through the working position 20, the cut hole detection sensor 202 at the working position 20 can detect the cut hole on the negative electrode plate 201. When the cut hole is detected, the cut hole detection sensor 202 can transmit a detection signal to a programmable logic controller (PLC) control system. When receiving the detection signal, the PLC control system triggers the second image acquisition device 203 at the working position 20 to collect the second image data, for example, triggers the second image acquisition device 203 to take a photo.

[0070] Here, the cut hole detection sensor 202 may be, for example, an optical fiber sensor, and the second image acquisition device 203 may be, for example, a charge-coupled device (CCD) for photography.

[0071] This technical solution triggers the second image acquisition device to collect the image data of the negative electrode plate by detecting the cut hole on the negative electrode plate. Since the cut hole is easy to detect, it is possible to avoid the problem that the second image acquisition device invalidly collects the image data of the negative electrode plate due to false detection, or avoid the problem that the second image acquisition device misses the collection of the image data of the negative electrode plate due to false detection.

[0072] Referring to FIG. 2 again, in addition to the cut hole detection sensor 202 and the second image acquisition device 203, the working position 20 shown in FIG. 2 further includes a drying box 204, a pressing roller 205, and a negative electrode plate cutting cutter 206.

[0073] Here, the drying box 204 is installed upstream of the negative electrode plate 201 in the conveying direction of the pressure roller 205, and is installed on both sides of the separator, and is for heating the adhesive on the upper and lower surfaces of the separator. The pressure roller 205 is for pressing the separator and the negative electrode plate 201. By heating the adhesive, the viscosity of the adhesive is increased, which is advantageous for the lamination of the separator and the negative electrode plate 201. At the same time, when the subsequent positive electrode plate is laminated, the adhesive on the surface of the separator on the side away from the negative electrode plate can ensure the lamination of the positive electrode plate and the separator.

[0074] The negative electrode plate cutting cutter 206 is installed downstream of the negative electrode plate 201 in the conveying direction of the pressure roller 205. In the embodiment of the present application, the cut hole detection sensor 202 may further be used to determine the position of the negative electrode end plate. When the cut hole detection sensor 202 detects that the fold on the negative electrode end plate arrives at the negative electrode cutting, the negative electrode plate cutting cutter 206 can cut the fold, thereby completing the separation of the battery cells.

[0075] Furthermore, after the first negative electrode plate of each battery cell is taken out from the next working position, in order to ensure that it can be accurately determined whether the fold on the negative electrode plate is located on the upper surface or the lower surface of the negative electrode plate, the method 100 may further include storing the fold information.

[0076] For example, the fold information may be stored in a stack list, or the fold information may be stored in the cloud.

[0077] After obtaining the fold information, as shown in FIG. 3, if the fold information is for indicating that the first fold among at least one fold is located on the upper surface of the negative electrode plate, among the plurality of positive electrode plates, the first to be conveyed is the upper positive electrode plate, that is, the first upper positive electrode plate among at least one upper positive electrode plate. Next, the lower positive electrode plate, that is, the first lower positive electrode plate among at least one lower positive electrode plate, is conveyed. Thereafter, the second upper positive electrode plate, the second lower positive electrode plate, the third upper positive electrode plate... are conveyed alternately.

[0078] If the crease information is for indicating that the first crease among at least one crease is located on the lower surface of the negative electrode plate, among the plurality of positive electrode plates, the first one to be conveyed is the lower positive electrode plate, that is, the first lower positive electrode plate among at least one lower positive electrode plate. Next, the upper positive electrode plate, that is, the first upper positive electrode plate among at least one upper positive electrode plate is conveyed. Then, the second lower positive electrode plate, the second upper positive electrode plate, the third lower positive electrode plate... are conveyed alternately.

[0079] The above technical solution determines the conveying order of the upper positive electrode plate and the lower positive electrode plate in the positive electrode plate based on the crease in the negative electrode plate, which is easy to implement and can determine the conveying order of the positive electrode plate very intuitively. On the other hand, there are multiple creases on the negative electrode plate, which facilitates subsequent folding.

[0080] In addition, when the crease is located on the upper surface of the negative electrode plate, the first positive electrode plate to be conveyed is the upper positive electrode plate. When the crease is located on the lower surface of the negative electrode plate, the first positive electrode plate to be conveyed is the lower positive electrode plate. In this way, the positive electrode plate can cover the crease on the negative electrode plate, thereby meeting the process production requirements.

[0081] Before conveying the positive electrode plate based on the conveying order, since the positive electrode plate is not continuous, the embodiments of the present application need to cut the positive electrode plate.

[0082] FIG. 4 shows a schematic diagram of the positive electrode plate cutting operation position 40. 401a is the upper positive electrode plate, 401b is the lower positive electrode plate. The positive electrode plate cutting cutter 402a is for cutting the continuous upper positive electrode plate 401a to form at least one upper positive electrode plate, and the positive electrode plate cutting cutter 402b is for cutting the continuous lower positive electrode plate 401b to form at least one lower positive electrode plate. Here, the widths of at least one upper positive electrode plate and at least one lower positive electrode plate after cutting are the same.

[0083] Referring to FIG. 4 again, the working position 40 may further include a third image acquisition device 403 in addition to the positive electrode plate cutting cutters 402a and 402b, and the upper positive electrode plate 401a and the lower positive electrode plate 401b. After the negative electrode plate and the separator are combined, the negative electrode plate may enter the working position 40 and trigger the third image acquisition device 403 to collect image data, so as to obtain the crease position of the crease on the negative electrode plate. After the third image acquisition device 403 collects the image data, the third image acquisition device 403 may feedback the obtained crease position to the PLC control system.

[0084] When cutting at least one continuous positive electrode plate into at least one upper positive electrode plate and at least one lower positive electrode plate, the method 100 may further include generating a first identifier for at least one upper positive electrode plate and a second identifier for at least one lower positive electrode plate.

[0085] Here, the first identifier and the second identifier are different.

[0086] Exemplarily, the first identifier may be "1***", for example, "1033", and the second identifier may be "5***", for example, "5024". Or, the first identifier may be "A***", and the second identifier may be "B***".

[0087] It should be understood that the specific examples in this specification are only for helping those skilled in the art better understand the embodiments of the present application, and do not limit the scope of the embodiments of the present application.

[0088] Specifically, after cutting the positive electrode plate, the obtained at least one upper positive electrode plate and at least one lower positive electrode plate may be sent to the next working position in sequence. In the process of transporting at least one upper positive electrode plate and at least one lower positive electrode plate, the PLC control system may trigger a fourth image acquisition device to take a photo based on at least one upper positive electrode plate and at least one lower positive electrode plate, and mark the current time electrode plate with the first identifier or the second identifier.

[0089] As an example, rules for transporting the upper positive electrode plate and the lower positive electrode plate may be set in advance. For example, the rules may include whether to transport the upper positive electrode plate first or the lower positive electrode plate first. Also for example, the rules may include transporting in the order of upper positive electrode plate, lower positive electrode plate, upper positive electrode plate, lower positive electrode plate... or transporting in the order of upper positive electrode plate, upper positive electrode plate, lower positive electrode plate, lower positive electrode plate, upper positive electrode plate, upper positive electrode plate...

[0090] In this way, in order to transport the positive electrode plate, the PLC control system can trigger the fourth image acquisition device to take a photo and determine whether the current-time electrode plate is the upper positive electrode plate or the lower positive electrode plate based on the rules. If it is the upper positive electrode plate, a first identifier is generated, and if it is the lower positive electrode plate, a second identifier is generated.

[0091] As another example, as shown in FIG. 5, the fourth image acquisition device may include a fourth image acquisition device 50a and a fourth image acquisition device 50b. When the upper positive electrode plate passes through the position of the fourth image acquisition device 50a, the PLC control system can trigger the fourth image acquisition device 50a to take a photo and mark the upper positive electrode plate at the current time as the first identifier. When the lower positive electrode plate passes through the position of the fourth image acquisition device 50b, the PLC control system can trigger the fourth image acquisition device 50b to take a photo and mark the lower positive electrode plate at the current time as the second identifier.

[0092] It should be understood that 20 and 40 in FIG. 5 may be the working position 20 and the working position 40 in the previous text respectively.

[0093] After generating the first identifier and the second identifier, as an example, the first identifier and the second identifier may be stored together. For example, the first identifier and the second identifier are stored alternately based on the transport order of the second electrode plate.

[0094] Considering the problem that there may be confusion between the first identifier and the second identifier when they are stored together, as another example, the first identifier may be stored in the first stack list, and the second identifier may be stored in the second stack list.

[0095] As shown in FIG. 6, 601 is the first stack list, 602 is the second stack list. All the identifiers stored in the first stack list 601 are the first identifiers, and all the identifiers stored in the second stack list 602 are the second identifiers.

[0096] It should be noted that the first identifier and the second identifier may be stored in other places in addition to being stored in the first stack list and the second stack list. The embodiments of the present application do not specifically limit this.

[0097] This technical solution stores the first identifier of the upper positive electrode plate and the second identifier of the lower positive electrode plate in different stack lists, and can effectively prevent the problem of confusion between the first identifier and the second identifier, for example, misidentifying the first identifier as the second identifier and misidentifying the second identifier as the first identifier, which is advantageous for the progress of subsequent processes.

[0098] Subsequently, at least one upper positive electrode plate and at least one lower positive electrode plate may be alternately conveyed based on the conveying order.

[0099] Optionally, the conveying timings of the upper positive electrode plate and the lower positive electrode plate may be determined based on the crease position acquired by the third image acquisition device 403 at the working position 40. Specifically, when at least one crease on the negative electrode plate arrives at the conveying position of the second electrode plate, at least one upper positive electrode plate and at least one lower positive electrode plate are alternately conveyed based on the conveying order.

[0100] When the fold on the negative electrode plate reaches the conveying position of the positive electrode plate, at least one upper positive electrode plate and at least one lower positive electrode plate are conveyed alternately, which can ensure the accurate alignment between the positive electrode plate and the negative electrode plate and improve the accuracy of the battery cell.

[0101] Furthermore, in the process of conveying the positive electrode plate, based on the conveying order, the first identifier in the first stack list and the second identifier in the second stack list are alternately taken out, and based on the taking-out order of alternately taking out the first identifier and the second identifier, the first identifier and the second identifier after being taken out may be stored in the third stack list.

[0102] Here, the identifiers in the same stack list are taken out in the order of first-in-last-out. The sequence in the third stack list is the identifier sequence of the positive electrode plate.

[0103] Specifically, if it is determined that the first one to be conveyed based on the conveying order is the upper positive electrode plate, one of at least one first identifier in the first stack list is taken out, then one of at least one second identifier in the second stack list is taken out, and then one of at least one first identifier in the first stack list is taken out, and so on alternately. Or, if it is determined that the first one to be conveyed based on the conveying order is the lower positive electrode plate, one of at least one second identifier in the second stack list is taken out, then one of at least one first identifier in the first stack list is taken out, and then one of at least one second identifier in the second stack list is taken out, and so on alternately.

[0104] Store the first identifier and the second identifier retrieved during the interaction in a third stack list. For example, store the identifier in the first stack list 601 shown in FIG. 6 and the identifier in the second stack list 602 in the third stack list 701 shown in FIG. 7. As can be seen from FIG. 7, the first positive electrode plate to be transported is the upper positive electrode plate, and the upper positive electrode plate is the electrode plate corresponding to the first identifier "1001".

[0105] After storing the first identifier and the second identifier in the third stack list, step 130 may specifically include, when transporting the positive electrode plate, sequentially retrieving the identifier sequence in the third stack list, and triggering the first image acquisition device according to the retrieved identifier sequence to collect the first image data by the image acquisition device.

[0106] That is, according to the identifier sequence, the first image data of each second electrode plate is collected in sequence.

[0107] In the above technical solution, the first identifier and the second identifier are alternately stored in the third stack list based on the transport order of the positive electrode plates. That is, the identifier sequence in the third stack list corresponds to the transport order. In this way, when triggering the first image acquisition device to collect the first image data of the positive electrode plate according to the retrieved identifier sequence, the collected first image data also corresponds to the transport order of the positive electrode plates, which brings convenience to the processing of subsequent processes. Furthermore, by triggering the first image acquisition device to collect the first image data according to the identifier sequence, a strong correlation is established between the first image data and the identifier sequence. In this way, when an abnormality occurs in the battery cell, based on the first image data and its related identifier sequence, it is possible to determine specifically which electrode plate the abnormality has occurred in a short time.

[0108] Furthermore, the image acquisition device may include a first sub-image acquisition device and a second sub-image acquisition device. If the retrieved identifier is the first identifier in the identifier sequence, the first sub-image acquisition device is triggered to collect the first image data. If the retrieved identifier is the second identifier in the identifier sequence, the second sub-image acquisition device is triggered to collect the first image data.

[0109] Optionally, the first sub-image acquisition device and the second sub-image acquisition device may be cameras, but are not limited thereto.

[0110] Meanwhile, method 100 may further include storing the identifier sequence and the first image data. Here, the identifier sequence and the first image data correspond one-to-one. For example, after the first sub-image acquisition device and the second sub-image acquisition device collect the first image data, the first image data and the identifier sequence may be transmitted to the stacked upper system, and the stacked upper system may collect the first image data and the identifier sequence in a corresponding database and store the identifier sequence and the first image data.

[0111] To illustrate with an example, it is as shown in the working position 80 shown in FIG. 8. Exemplarily, the working position 80 may be the working position 20 in FIG. 5. The working position 80 includes a first sub-image acquisition device 803a and a second sub-image acquisition device 803b. 804a and 804b are an upper separator and a lower separator respectively. 801 is an upper positive electrode plate, and 802 is a lower positive electrode plate. When the identifier retrieved at the position of the first sub-image acquisition device 803a is the first identifier, for example, "1001", the first sub-image acquisition device 803a is triggered to take a photo. Otherwise, no photo is taken. When the identifier retrieved at the position of the second sub-image acquisition device 803b is the second identifier, for example, "5001", the second sub-image acquisition device 803b is triggered to take a photo. Otherwise, no photo is taken. Meanwhile, the first image data obtained by taking a photo and the identifier of the current time are stored.

[0112] The above technical solution stores the identifier sequence of the positive electrode plate and the first image data, so that it is possible to trace and search any first image data of the positive electrode plate. In this way, when an abnormality occurs in the battery cell, the electrode plate where the abnormality specifically occurs can be determined based on the directly stored identifier sequence and the first image data, which is not only easy to implement, but also effectively shortens the processing time.

[0113] After that, the composite negative electrode plate, the separator, and the positive electrode plate are laminated. For example, the lamination is performed at the working position 40 shown in FIG. 5.

[0114] To more clearly understand 120 and 130 in the electrode plate lamination method 100 according to the embodiment of the present application, the following will describe 120 and 130 in the method 100 of a possible embodiment of the present application in conjunction with FIG. 9.

[0115] S901a. Cut the upper positive electrode plate at the working position 40.

[0116] S901b. Cut the lower positive electrode plate at the working position 40.

[0117] S902a. Generate a first stack list 601, where the first stack list 601 includes the first identifier of the upper positive electrode plate.

[0118] S902b. Generate a second stack list 602, where the second stack list 602 includes the second identifier of the lower positive electrode plate.

[0119] S903. Based on the conveyance order of the positive electrode plates, trigger the first identifier in the first stack list 601 and the second identifier in the second stack list 602 for extraction.

[0120] S904. Based on the conveyance order, generate a third stack list 701 using the identifiers extracted from the first stack list 601 and the second stack list 602.

[0121] S905. The working position 80 triggers the identifier in the third stack list 701 for taking out.

[0122] S906. Based on the identifier taken out in the third stack list 701, trigger the corresponding camera to take a photo.

[0123] S907. Send the identifier taken out in the third stack list 701 to the CCD.

[0124] S908. Determine whether the taken-out identifier is the first identifier or the second identifier.

[0125] If it is the first identifier or the second identifier, execute S910. If the taken-out identifier is neither the first identifier nor the second identifier, execute S909.

[0126] S909. Do not trigger the camera to take a photo.

[0127] S910. Determine whether the taken-out identifier is the first identifier.

[0128] If it is the first identifier, execute S912. If it is not the first identifier, execute S911.

[0129] S911. Trigger the camera corresponding to the lower positive electrode plate to take a photo and store the first image data.

[0130] S912. Trigger the camera corresponding to the upper positive electrode plate to take a photo and store the first image data.

[0131] As above, the method embodiments of the present application have been described in detail. Next, the apparatus embodiments of the present application will be described. Since the apparatus embodiments and the method embodiments correspond to each other, for the parts not described in detail, reference may be made to the embodiments of each method described above. The apparatus can implement any possible implementation form in the above method.

[0132] Figure 10 shows a schematic block diagram of a plate stacking device 1000 according to an embodiment of the present application. The stacking device 1000 can execute the plate stacking method 100 of the embodiment of the present application. As shown in Figure 10, the stacking device 1000 may include the following.

[0133] A processing unit 1010 for determining a conveyance order for conveying a plurality of second plates based on a first plate, where the first plate is a continuous plate, the plurality of second plates include at least one upper plate and at least one lower plate, the plurality of second plates are discontinuous plates, and the conveyance order is for alternately conveying the at least one upper plate and the at least one lower plate.

[0134] A generation unit 1020 for generating an identifier sequence of the plurality of second plates based on the conveyance order.

[0135] A collection unit 1030 for collecting first image data of each of the plurality of second plates based on the identifier sequence in the process of conveying the plurality of second plates based on the conveyance order.

[0136] Optionally, in an embodiment of the present application, the processing unit 1010 is further used to store the identifier sequence and the first image data, where the identifier sequence and the first image data correspond one-to-one.

[0137] Optionally, in an embodiment of the present application, specifically, the processing unit 1010 is to obtain crease information of the first plate, where the crease information is for indicating whether at least one crease on the first plate is located on the upper surface or the lower surface of the first plate, and is used to determine the conveyance order based on the crease information.

[0138] Optionally, in one embodiment of the present application, if the crease information is for instructing that the first crease among the at least one crease is located on the upper surface of the first electrode plate, then among the plurality of second electrode plates, the first one to be conveyed is the first upper electrode plate among the at least one upper electrode plate; if the crease information is for instructing that the first crease among the at least one crease is located on the lower surface of the first electrode plate, then among the plurality of second electrode plates, the first one to be conveyed is the conveyance of the first lower electrode plate among the at least one lower electrode plate.

[0139] Optionally, in one embodiment of the present application, the generating unit 1020 is further used for generating a first identifier of the at least one upper electrode plate and a second identifier of the at least one lower electrode plate when cutting a continuous second electrode plate into the at least one upper electrode plate and the at least one lower electrode plate.

[0140] The processing unit 1010 is further used for storing the first identifier in a first stack list and storing the second identifier in a second stack list.

[0141] Optionally, in one embodiment of the present application, the processing unit 1010 is further used for alternately taking out the first identifier in the first stack list and the second identifier in the second stack list according to the conveying order, taking out the identifiers in the same stack list in the order of first in first out, and storing the taken-out first identifier and second identifier in a third stack list according to the taking-out order of alternately taking out the first identifier and the second identifier, where the sequence in the third stack list is the identifier sequence.

[0142] Optionally, in one embodiment of the present application, the laminating device 1000 includes a first image acquisition device, and the processing unit 1010 is further configured to sequentially extract the identifier sequence in the third stack list when transporting the second electrode plate, and use the identifier sequence after extraction to trigger the first image acquisition device to collect the first image data by the image acquisition device.

[0143] Optionally, in one embodiment of the present application, the first image acquisition device includes a first sub-image acquisition device and a second sub-image acquisition device, and specifically, the processing unit 1010 is configured to trigger the first sub-image acquisition device to collect the first image data if the extracted identifier is the first identifier in the identifier sequence, and trigger the second sub-image acquisition device to collect the first image data if the extracted identifier is the second identifier in the identifier sequence.

[0144] Optionally, in one embodiment of the present application, specifically, the processing unit 1010 is configured to detect the cut hole on the first electrode plate, and when the cut hole on the first electrode plate is detected, trigger a second image acquisition device to collect the second image data of the first electrode plate, where the second image data is for obtaining the crease information.

[0145] Optionally, in one embodiment of the present application, when the at least one crease reaches the conveying position of the plurality of second electrode plates, the conveying unit is further included for alternately conveying the at least one upper electrode plate and the at least one lower electrode plate based on the conveying order.

[0146] Optionally, in one embodiment of the present application, the first electrode plate is a negative electrode plate, the second electrode plate is a positive electrode plate, the upper electrode plate is an upper positive electrode plate, and the lower electrode plate is a lower positive electrode plate.

[0147] It should be understood that the laminating device 1000 can implement the corresponding operations in the method 100, and for the sake of brevity, it will not be further described herein. Accordingly, the laminating device 1000 can achieve the same technical effects as the aforementioned method 100, and for the sake of brevity, it will not be further described herein.

[0148] FIG. 11 is a schematic hardware structure diagram of a plate laminating device 1100 according to an embodiment of the present application. The laminating device 1100 includes a memory 1101, a processor 1102, a communication interface 1103, and a bus 1104. Here, the memory 1101, the processor 1102, and the communication interface 1103 realize their mutual communication connections via the bus 1104.

[0149] The memory 1101 may be a read-only memory (ROM), a static storage device, or a random access memory (RAM). The memory 1101 can store a program, and when the program stored in the memory 1101 is executed by the processor 1102, the processor 1102 and the communication interface 1103 are used to execute each step of the plate laminating method according to the embodiment of the present application.

[0150] The processor 1102 may employ a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), a graphics processing unit (GPU), or one or more integrated circuits, execute related programs, realize the functions that the units in the device according to the embodiment of the present application need to execute, or be used to execute the plate laminating method according to the embodiment of the present application.

[0151] The processor 1102 may be an integrated circuit chip having signal processing capabilities. In the process of implementation, each step of the method for laminating the electrode plates according to the embodiments of the present application may be completed by the integrated logic circuit of the hardware in the processor 1102 or instructions in the form of software.

[0152] The above-mentioned processor 1102 may further be a general-purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware assemblies. Each method, step, and logic block diagram disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor, or the processor may be any ordinary processor, etc. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as the completion of execution by a hardware processor, or as the execution by a combination of hardware and software modules within the processor. The software module may be located in a storage medium mature in the art such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, register, etc. The storage medium is located in the memory 1101, and the processor 1102 reads the information in the memory 1101 and, together with its hardware, completes the functions that the units included in the lamination device 1100 of the embodiments of the present application need to execute, or executes the method for laminating the electrode plates of the embodiments of the present application.

[0153] The communication interface 1103 uses a transceiver-like transmitting and receiving device, but is not limited thereto, to realize communication between the lamination device 1100 and other devices or a communication network.

[0154] The bus 1104 may include a path for transmitting information among various components of the stacking device 1100 (for example, the memory 1101, the processor 1102, and the communication interface 1103).

[0155] It should be noted that although the above stacking device 1100 only shows a memory, a processor, and a communication interface, in the specific implementation process, as those skilled in the art can understand, the stacking device 1100 may further include other devices necessary to realize normal operation. At the same time, as those skilled in the art can understand, according to specific requirements, the stacking device 1100 may further include hardware devices for realizing other additional functions. It should be noted that, as those skilled in the art can understand, the stacking device 1100 may only include the devices necessary to implement the embodiments of the present application, and it is not necessary to include all the devices shown in FIG. 11.

[0156] The embodiments of the present application further provide a stacking machine, which may include the stacking device of the electrode plate shown in FIG. 10 or FIG. 11.

[0157] The present application has been described with reference to the preferred embodiments. However, various improvements can be made to it without departing from the scope of the present application, and some of its components may be replaced with equivalent ones. In particular, as long as there is no structural contradiction, the technical features mentioned in each embodiment may be combined in any manner. The present application is not limited to the specific embodiments disclosed in this specification, but includes all technical solutions included in the scope of the claims.

Claims

1. A method for laminating electrode plates, the method comprising: Determining a conveying order for conveying a plurality of second electrode plates based on a first electrode plate, wherein the first electrode plate is a continuous electrode plate, the plurality of second electrode plates include at least one upper electrode plate and at least one lower electrode plate, the plurality of second electrode plates are discontinuous electrode plates, and the conveying order is for alternately conveying the at least one upper electrode plate and the at least one lower electrode plate; Generating an identifier sequence of the plurality of second electrode plates based on the conveying order; During the process of conveying the plurality of second electrode plates based on the conveying order, collecting first image data of each second electrode plate among the plurality of second electrode plates based on the identifier sequence; A method for laminating electrode plates, characterized by including the above.

2. The method further includes: Storing the identifier sequence and the first image data, wherein the identifier sequence and the first image data correspond one-to-one. The lamination method according to Claim 1, characterized by this.

3. Determining the conveying order for conveying a plurality of second electrode plates based on the first electrode plate as described above includes: Obtaining crease information of the first electrode plate, wherein the crease information is for indicating whether at least one crease on the first electrode plate is located on the upper surface or the lower surface of the first electrode plate; Determining the conveying order based on the crease information. The lamination method according to Claim 1 or 2, characterized by this.

4. If the crease information is for indicating that the first crease among the at least one crease is located on the upper surface of the first electrode plate, then among the plurality of second electrode plates, the first one to be conveyed is the first upper electrode plate among the at least one upper electrode plate; If the crease information is for indicating that the first crease among the at least one crease is located on the lower surface of the first electrode plate, then among the plurality of second electrode plates, the first one to be conveyed is the conveyance of the first lower electrode plate among the at least one lower electrode plate. The lamination method according to Claim 3, characterized by this.

5. The method includes: When cutting the continuous second electrode plates to form the at least one upper electrode plate and the at least one lower electrode plate, generating a first identifier of the at least one upper electrode plate and a second identifier of the at least one lower electrode plate; Storing the first identifier in a first stack list and storing the second identifier in a second stack list; The lamination method according to any one of claims 1 to 4, further comprising the above.

6. Generating the identifier sequence of the plurality of second electrode plates based on the above transport order is: Based on the transport order, alternately taking out the first identifier in the first stack list and the second identifier in the second stack list, and taking out the identifiers in the same stack list in the order of first-in-first-out; According to the extraction order of alternately taking out the first identifier and the second identifier, storing the taken-out first identifier and second identifier in a third stack list, wherein the sequence in the third stack list is the identifier sequence; The lamination method according to claim 5, comprising the above.

7. The lamination method is used in a laminator, the laminator includes a first image acquisition device, and collecting the first image data of each second electrode plate among the plurality of second electrode plates based on the identifier sequence is: When transporting the second electrode plate, sequentially taking out the identifier sequence in the third stack list; Triggering the first image acquisition device according to the taken-out identifier sequence to cause the image acquisition device to collect the first image data; The lamination method according to claim 6, comprising the above.

8. The first image acquisition device includes a first sub-image acquisition device and a second sub-image acquisition device, and triggering the first image acquisition device according to the taken-out identifier sequence to cause the image acquisition device to collect the first image data is: If the taken-out identifier is the first identifier in the identifier sequence, triggering the first sub-image acquisition device to collect the first image data; If the retrieved identifier is the second identifier in the identifier sequence, triggering the second sub-image acquisition device to collect the first image data; The lamination method according to claim 7, characterized by including this.

9. Obtaining the fold information of the first electrode plate includes: Detecting the cut holes on the first electrode plate; When the cut holes on the first electrode plate are detected, triggering a second image acquisition device to collect second image data of the first electrode plate, where the second image data is for obtaining the fold information; The lamination method according to any one of claims 1 to 8, characterized by including this.

10. The method further includes: When at least one fold reaches the conveying position of the plurality of second electrode plates, alternately conveying the at least one upper electrode plate and the at least one lower electrode plate based on the conveying order. The lamination method according to any one of claims 1 to 9, characterized by including this.

11. The first electrode plate is a negative electrode plate, the second electrode plate is a positive electrode plate, the upper electrode plate is an upper positive electrode plate, and the lower electrode plate is a lower positive electrode plate. The lamination method according to any one of claims 1 to 10, characterized by this.

12. An electrode plate lamination device, comprising: A processing unit for determining a conveying order for conveying a plurality of second electrode plates based on a first electrode plate, where the first electrode plate is a continuous electrode plate, the plurality of second electrode plates include at least one upper electrode plate and at least one lower electrode plate, the plurality of second electrode plates are discontinuous electrode plates, and the conveying order is for alternately conveying the at least one upper electrode plate and the at least one lower electrode plate; A generating unit for generating an identifier sequence of the plurality of second electrode plates based on the conveying order; A collecting unit for collecting first image data of each second electrode plate among the plurality of second electrode plates based on the identifier sequence during the process of conveying the plurality of second electrode plates based on the conveying order; An electrode plate lamination device, characterized by including this.

13. The processing unit further includes: It is used to store the identifier sequence and the first image data. Here, the identifier sequence and the first image data correspond one-to-one. The laminating device according to claim 12, characterized in that.

14. Specifically, the processing unit is to obtain the crease information of the first electrode plate, and the crease information is for indicating whether at least one crease on the first electrode plate is located on the upper surface or the lower surface of the first electrode plate. Based on the crease information, determining the conveying order The laminating device according to claim 12 or 13, characterized in that it is used for.

15. If the crease information is for indicating that the first crease among the at least one crease is located on the upper surface of the first electrode plate, then among the plurality of second electrode plates, the first to be conveyed is the first upper electrode plate among the at least one upper electrode plate. If the crease information is for indicating that the first crease among the at least one crease is located on the lower surface of the first electrode plate, then among the plurality of second electrode plates, the first to be conveyed is the conveyance of the first lower electrode plate among the at least one lower electrode plate. The laminating device according to claim 14, characterized in that.

16. The generating unit further is used to generate the first identifier of the at least one upper electrode plate and the second identifier of the at least one lower electrode plate when cutting a continuous second electrode plate into the at least one upper electrode plate and the at least one lower electrode plate. The processing unit further is used to store the first identifier in a first stack list and store the second identifier in a second stack list. The laminating device according to any one of claims 12 to 15, characterized in that.

17. The processing unit further is to alternately take out the first identifier in the first stack list and the second identifier in the second stack list based on the conveying order, and take out the identifiers in the same stack list in the order of first-in-first-out. According to the extraction order of alternately extracting the first identifier and the second identifier, storing the first identifier and the second identifier after extraction in a third stack list, wherein the sequence in the third stack list is the identifier sequence, The laminating apparatus according to claim 16, which is used for.

18. The laminating apparatus includes a first image acquisition device, and the processing unit further When transporting the second electrode plate, sequentially extract the identifier sequence in the third stack list, Trigger the first image acquisition device according to the identifier sequence after extraction, and cause the image acquisition device to collect the first image data, The laminating apparatus according to claim 17, which is used for.

19. The first image acquisition device includes a first sub-image acquisition device and a second sub-image acquisition device. Specifically, the processing unit If the extracted identifier is the first identifier in the identifier sequence, trigger the first sub-image acquisition device to collect the first image data, If the extracted identifier is the second identifier in the identifier sequence, trigger the second sub-image acquisition device to collect the first image data, The laminating apparatus according to claim 18, which is used for.

20. Specifically, the processing unit Detect the cut hole on the first electrode plate, When the cut hole on the first electrode plate is detected, trigger a second image acquisition device to collect second image data of the first electrode plate, wherein the second image data is for obtaining the fold information, The laminating apparatus according to any one of claims 12 to 19, which is used for.

21. When the at least one fold reaches the conveying position of the plurality of second electrode plates, further including a conveying unit for alternately conveying the at least one upper electrode plate and the at least one lower electrode plate based on the conveying order,

22. The first electrode plate is a negative electrode plate, the second electrode plate is a positive electrode plate, the upper electrode plate is an upper positive electrode plate, and the lower electrode plate is a lower positive electrode plate. The lamination device according to any one of claims 12 to 21, characterized in that.

23. A laminator, Comprising the electrode plate lamination device according to any one of claims 12 to 22. A laminator characterized by that.

Images