Electrode material winding device

Abstract

The present specification relates to a method for processing an electrode material in such a manner that an electrode tab is not disposed in an immersion region into which an electrolyte can be injected, and winding the electrode material in such a manner that the electrode tab is disposed only in a specific region other than the immersion region. An embodiment of an electrode material winding device for winding an electrode material in such a manner that an electrolyte is injected through the immersion region is provided.

Description

Technical Field

[0001] The embodiments of the present specification relate to an electrode material winding device for processing an electrode material and winding the electrode material into a winding core. Background Art

[0002] Unlike primary batteries, secondary batteries can be recharged and can be made smaller and have a larger capacity, so they have been developed a lot in recent years. With the development of technology and the increase in demand for mobile devices, the demand for secondary batteries as energy sources has increased dramatically.

[0003] Secondary batteries are classified into coin-type batteries, cylindrical batteries, square batteries and pouch batteries according to the shape of the battery shell. The electrode assembly installed inside the battery shell in the secondary battery is a chargeable and dischargeable power generation element consisting of a stacked structure of positive electrode / separation membrane / negative electrode. The electrode assembly is roughly divided into a jelly roll type in which a separation membrane is sandwiched between a sheet-type positive electrode coated with an active material and a negative electrode, a stacked type in which a plurality of positive electrodes and negative electrodes are stacked in sequence with a separation membrane sandwiched, and a stacked / folded type in which a stacked unit battery is wound into a long separation membrane. Among them, the jelly roll type electrode assembly has the advantages of easy manufacturing and high energy density per unit weight, so it is widely used.

[0004] On the other hand, Korean Patent Publication No. 10-2021-0058892 (published on May 24, 2021) (hereinafter referred to as the prior art document) discloses a technology for connecting electrodes of a core-type electrode assembly in which the foil extending from the electrode protrudes toward the upper and lower end surfaces of the core, respectively, so that the protruding foil is electrically connected to the connecting tab (electrode plate). As described in the prior art document, the conventional core has the following structure: the electrode processed into a foil extension protruding toward the end surface of the core is wound, and the protruding foil is folded to form an electrode tab, so that it is electrically connected to the connecting tab at the upper end surface. Such a structure is as follows. Figure 1 exemplified.

[0005] Figure 1 As an example diagram showing the shape of the upper end surface of a conventional winding core described in a prior art document, a state in which the foil corresponding to the electrode tab is protruding and folded is shown. Figure 1 As shown, in the conventional winding core, the protruding foil is folded, so that the upper end surface of the winding core is covered by the folded foil. Due to such a structure, there is a limitation that the gap for injecting electrolyte is blocked. Therefore, another process or equipment is required for injecting and impregnating the electrolyte, which will lead to the complexity of the secondary battery manufacturing process and increase the cost. In addition, it is difficult to inject and impregnate the electrolyte, which leads to the problem that the performance and quality of the product cannot be guaranteed.

[0006] That is, the conventional winding core structure has the problem of difficulty in electrolyte injection and impregnation, and requires additional processes and equipment, which can only lead to increased production time and cost. In addition, the performance and quality of secondary battery products cannot be guaranteed, so the application and applicability of secondary batteries in various fields are limited. Summary of the invention

[0007] Technical issues

[0008] An object of the present invention is to improve the above-mentioned limitations of the prior art.

[0009] Therefore, the present specification aims to provide an embodiment for easily injecting an electrolyte when manufacturing a secondary battery.

[0010] In addition, the present invention is to provide an embodiment in which the impregnation with the electrolyte solution can be achieved without requiring an additional process and equipment for impregnation with the electrolyte solution.

[0011] In addition, the present invention is to provide an embodiment that can accurately arrange the electrode tabs as the electrode material is wound.

[0012] At the same time, the present invention is to provide an embodiment of flexibly winding an electrode material according to a winding state.

[0013] Means of solving technical problems

[0014] In order to solve the above-mentioned problems, the solution means of the embodiment of this specification is to wind the electrode material so that the impregnation area is formed on the end surface of the winding core of the wound electrode material.

[0015] Specifically, the electrode material is processed so that no electrode tab is arranged in an impregnation region into which the electrolyte can be injected, and the electrode material is wound so that the electrode tab is arranged only in a specific region other than the impregnation region.

[0016] That is, the embodiments of the present specification solve the above-mentioned problem by the following method: the electrode material is processed in a manner that the electrode tabs are not arranged in the impregnation area where the electrolyte can be injected, and the electrode material is wound in a manner that the electrode tabs are arranged only in specific areas other than the above-mentioned impregnation area, so that the electrolyte is injected through the above-mentioned impregnation area.

[0017] Such technical features can be applied to electrode material production processes, electrode material production methods, electrode material winding processes, electrode material winding methods and secondary battery manufacturing systems, and this specification provides an embodiment of an electrode material winding device that uses the above-mentioned technical features as a solution.

[0018] In an embodiment of an electrode material winding device that uses the above-mentioned technical features as a means to solve the problem, the electrode material winding device that winds the electrode material includes: a processing section that processes the above-mentioned end portion in a manner that forms an electrode ear connected to an electrode plate in a prescribed pattern at one or more of the upper and lower ends of the above-mentioned electrode material; a winding section that winds the above-mentioned electrode material into a cylindrical winding core; a guiding section that contacts a winding surface on which the above-mentioned electrode material is wound to apply pressure to the above-mentioned winding surface in a manner that the above-mentioned electrode ear is configured to a specific area corresponding to a portion of one or more of the end surfaces on the upper surface and the lower surface of the above-mentioned winding core; a detecting section that detects the input length of the above-mentioned electrode material from the front end of the above-mentioned winding section; and a control section that determines the configuration state of the above-mentioned electrode ear based on the detection result of the above-mentioned detecting section, and controls the position of the above-mentioned guiding section based on the judgment result to adjust the above-mentioned pressure.

[0019] In an embodiment, the electrode material includes: an electrode divided into a positive electrode and a negative electrode; and a separation membrane that separates the positive electrode and the negative electrode.

[0020] In an embodiment, the processing portion processes the end portion of a portion corresponding to the electrode so as to form the electrode tab.

[0021] In an embodiment, the predetermined pattern is a pattern based on the position of the electrode tab corresponding to the specific area.

[0022] In an embodiment, the predetermined pattern is a pattern in which a formed group in which at least one electrode tab is formed and a non-formed group in which the electrode tab is not formed are alternately formed.

[0023] In an embodiment, the processing portion notches the end portion so that the electrode tab is formed into the predetermined pattern.

[0024] In an embodiment, the processing section processes the end portion in such a manner that the electrode tabs are formed into the predetermined pattern and when the electrode material is wound, the electrode tabs are arranged in a predetermined shape on the end surface.

[0025] In an embodiment, the predetermined shape is a shape in which blank areas are formed on both sides of the specific area, and the electrode tabs are arranged in the blank areas in a number less than a predetermined number.

[0026] In an embodiment, the guide portion includes: a rolling portion that contacts the winding surface to guide the winding of the electrode material; and a driving portion that is controlled by the control portion to move the position of the rolling portion.

[0027] In an embodiment, the control unit determines the arrangement state at every predetermined period to control the position of the guide unit.

[0028] In an embodiment, the control unit maintains, advances or retreats the position of the guide unit according to the determination result, thereby adjusting the pressure.

[0029] In an embodiment, the control unit adjusts the guide unit to increase the pressure by advancing the guide unit toward the winding unit, and adjusts the guide unit to decrease the pressure by retreating the guide unit from the winding unit.

[0030] In an embodiment, the control unit calculates any one of the specification values ​​of the winding core based on the detection result, compares the specification value with a reference value based on the number of winding turns of the electrode material, and determines whether correction of the configuration state is required based on the comparison result.

[0031] In an embodiment, when the difference between the specification value and the reference value is smaller than a first reference, the control unit determines that there is no need to correct the arrangement state and maintains the position of the guide unit.

[0032] In an embodiment, when the difference between the specification value and the reference value is equal to or larger than a first reference, the control unit determines that the arrangement state needs to be corrected and moves the position of the guide unit.

[0033] In an embodiment, when the specification value is greater than the reference value, the control unit moves the position of the guide unit forward toward the winding unit.

[0034] In an embodiment, the control unit determines the advancing distance of the guide unit according to the extent to which the specification value is greater than the reference value.

[0035] In an embodiment, when the specification value is smaller than the reference value, the control unit moves the guide unit back from the winding unit.

[0036] In an embodiment, the control unit determines a retreat distance of the guide unit according to the extent to which the specification value is smaller than the reference value.

[0037] In an embodiment, when the difference between the specification value and the reference value is equal to or greater than a second reference exceeding the first reference, the control unit determines that the predetermined pattern needs to be further corrected and changes the setting of the processing unit.

[0038] The embodiments of the electrode material winding device are not limited to the above contents, and may also include embodiments described in the following specific description or inferred / derived from the specific description.

[0039] Effects of the Invention

[0040] The electrode material winding device of the embodiment processes and winds the electrode material so that an impregnation region into which an electrolyte can be injected is formed without arranging electrode tabs, thereby making it easy to inject the electrolyte through the impregnation region.

[0041] This facilitates the injection of the electrolyte, improves the impregnation of the electrolyte, and enables the injection and impregnation of the electrolyte without requiring separate steps and equipment for the injection and impregnation.

[0042] In addition, the injection and impregnation of the electrolyte solution can be performed without requiring additional steps and equipment, thereby simplifying the manufacturing process and reducing the time and cost required for the manufacturing process.

[0043] Furthermore, the pressure applied to the winding surface is adjusted according to the result of the determination of the arrangement state of the electrode tabs, so that the electrode tabs can be accurately arranged and the electrode material can be flexibly wound according to the winding state.

[0044] In this way, the connection area connected to the electrode plate and the impregnation area for injecting electrolyte can be accurately divided to prevent meandering winding. At the same time, it can not only improve the safety and reliability of core production, but also ensure the quality and performance of the product.

[0045] The effects of the above-mentioned embodiments of the electrode material winding device are not limited thereto, and may also include the effects described in the following embodiments or effects that can be analogized / derived from the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is an illustrative diagram showing an example of the shape of the upper end surface of a conventional winding core.

[0047] Figure 2 It is a structural diagram of an electrode material winding device according to an embodiment.

[0048] Figure 3a It is shown Figure 2 FIG. a is an illustrative diagram of a specific embodiment of the electrode material winding device shown.

[0049] Figure 3b yes Figure 2 FIG. b is an illustrative diagram of a specific embodiment of the electrode material winding device shown.

[0050] Figure 4 It is an illustrative diagram showing the shape of a winding core wound by the electrode material winding device of the embodiment.

[0051] Figure 5 This is an illustrative diagram illustrating an electrode material processed by the electrode material winding device of the embodiment.

[0052] Figure 6This is an illustrative diagram illustrating a predetermined pattern of an electrode material processed by the electrode material winding device of the embodiment.

[0053] Figures 7a to 7d 1 and 2 are illustrative diagrams a to d illustrating the end surface shape of a winding core wound by the electrode material winding device of the embodiment.

[0054] Figure 8 It is a sequence diagram showing the procedure of adjusting the position of the guide portion of the electrode material winding device of the embodiment. DETAILED DESCRIPTION

[0055] Below, with reference to the accompanying drawings, the embodiments disclosed in this specification are described in detail. Regardless of the serial numbers of the drawings, the same symbols are given to the same or similar components, and repeated descriptions thereof are omitted. When describing the embodiments disclosed in this specification, if it is determined that the specific description of the relevant known technology makes the gist of the embodiments disclosed in this specification unclear, its detailed description may be omitted.

[0056] In addition, the drawings are used to help facilitate understanding of the embodiments disclosed in this specification. The technical ideas disclosed in this specification are not limited to the contents in the drawings, but include all changes, equivalents and substitutes within the ideas and technical scope of the present invention.

[0057] First, refer to Figure 2 3D , the structure of the electrode material winding device of the embodiment will be described.

[0058] The electrode material winding device (hereinafter referred to as a winding device) is a device that processes and winds an electrode material to manufacture a winding core.

[0059] Here, the winding core refers to a component formed into a cylindrical structure by winding a strip-shaped or plate-shaped electrode material as an electrode component installed in the interior of a secondary battery.

[0060] Such a winding device includes a plurality of process devices and can process and wind the electrode material supplied from the outside through an automated process.

[0061] like Figure 2 As shown, the winding device 100 includes a processing unit 10 , a winding unit 20 , a guiding unit 30 , a detecting unit 40 and a control unit 50 .

[0062] The processing unit 10 may be a device that processes the electrode material into a shape that can be wound in the winding unit 20 .

[0063] The winding unit 20 may be a device that winds the electrode material processed in the processing unit 10 to produce a cylindrical winding core.

[0064] The guide unit 30 may be a device that applies pressure to the electrode material wound in the winding unit 20 to guide the winding of the electrode material.

[0065] The detection unit 40 may be a device for detecting a length of the electrode material fed from the processing unit 10 to the winding unit 20 .

[0066] The control unit 50 may be a device that controls driving of each of the processing unit 10 , the winding unit 20 , the guide unit 30 , and the detection unit 40 to control the overall operation of the winding device 100 .

[0067] Thus, a specific embodiment of the winding device 100 including the processing unit 10, the winding unit 20, the guide unit 30, the detection unit 40 and the control unit 50 for processing and winding the electrode material M is as follows: Figure 3a and Figure 3b shown.

[0068] like Figure 3a As shown, in the winding device 100, the processing section 10 receives the electrode material M from an external electrode material supply unit UW and processes the electrode material M into a shape that can be wound in the winding section 20. During the period when the winding section 20 winds the electrode material M processed by the processing section 10, the guide section 30 guides the winding of the electrode material M. When the detection section 40 detects the input length of the electrode material M into the winding section 20 and transmits it to the control section 50, the control section 50 controls the driving of the winding section 20 and the guide section 30 according to the input length.

[0069] Here, the electrode material supply unit UW may be a winding device that winds the electrode material M into a cylindrical shape and supplies the wound electrode material M to the processing unit 10 .

[0070] On the other hand, Figure 3b As shown, the winding device 100 including the processing part 10, the winding part 20, the guiding part 30, the detecting part 40 and the control part 50 may include one or more devices or equipment for processing, conveying, arranging and winding the electrode material in addition to the processing part 10, the winding part 20, the guiding part 30, the detecting part 40 and the control part 50.

[0071] In this case, if Figure 3b As shown, a plurality of rollers for conveying and arranging the electrode material M may be dispersedly arranged.

[0072] like Figure 4As shown, the winding device 100 winds up the electrode material M to produce a winding core JR.

[0073] In the winding device 100, the processing unit 10 processes the end portion in a manner that forms an electrode tab T connected to the electrode plate in a prescribed pattern at one or more of the upper and lower ends of the electrode material M, the winding unit 20 winds the electrode material M into a cylindrical winding core JR, the guide unit 30 contacts the winding surface of the electrode material M, and applies pressure to the winding surface in a manner that the electrode tab T is arranged in a specific area SZ corresponding to a portion of one or more of the end surfaces of the upper and lower surfaces of the winding core JR, the detection unit 40 detects the input length of the electrode material M from the front end of the winding unit 20, the control unit 50 determines the configuration state of the electrode tab T based on the detection result of the detection unit 40, and controls the position of the guide unit 30 based on the judgment result to adjust the pressure, thereby winding the electrode material M into a cylindrical winding core JR. Figure 4 The above-mentioned winding core JR shown.

[0074] Below, refer to Figures 4 to 8 d. A specific embodiment of the winding device 100 is described.

[0075] In the winding device 100 , the processing unit 10 processes one or more of the upper end and the lower end of the electrode material M so that the electrode tab T connected to the electrode plate is formed in a predetermined pattern.

[0076] That is, the processing unit 10 processes one or more of the upper and lower ends of the electrode material M, thereby Figure 5 As shown, the electrode tabs T may be formed at the end portions in the predetermined pattern.

[0077] Therefore, when the electrode material M is wound in the winding unit 20, Figure 4 As shown, the electrode tabs T formed in the predetermined pattern protrude toward the end surface of the winding core JR.

[0078] The processing unit 10 is driven under the control of the control unit 50 to process one or more of the upper end and the lower end of the electrode material M so that the electrode tab T is formed in the predetermined pattern.

[0079] That is, the processing of the electrode material M by the processing unit 10 is controlled by the control unit 50 .

[0080] In addition, the predetermined pattern is changed and set by the control unit 50 .

[0081] like Figure 5As shown, the electrode material M may include electrodes MP and MN divided into a positive electrode MP and a negative electrode MN, and a separation membrane MS separating the positive electrode MP from the negative electrode MN.

[0082] Here, the electrode material M is formed so as to divide the positive electrode MP, the separator MS, and the negative electrode MN, and the positive electrode MP, the separator MS, and the negative electrode MN are each wound in a unit of one turn.

[0083] That is, the positive electrode (MP) of the electrode material M is wound once, the separation membrane MS is wound once on the portion wound with the positive electrode MP, and the negative electrode MS is wound once on the portion wound with the separation membrane MS.

[0084] The electrode material M is formed so as to be divided into the positive electrode MP, the separator MS, and the negative electrode MN in accordance with the number of windings of the winding core JR.

[0085] That is, the electrode material M is divided into a plurality of positive electrodes MP, a plurality of separation membranes MS, and a plurality of negative electrodes MN.

[0086] The electrode material M is wound in the winding unit 20 to form the electrodes MP and MN and the separation membrane MS.

[0087] The electrode material M forms the negative electrode MN between a positive electrode MP and the next positive electrode MP.

[0088] In addition, the electrode material M forms the positive electrode MP between a certain negative electrode MN and the next negative electrode MN.

[0089] In this case, the electrode material M is formed in the order of arranging the separation membrane MS between the positive electrode MP and the negative electrode MN.

[0090] That is, in the electrode material M, the positive electrode MP and the negative electrode MN are arranged to cross each other, and the separation membrane MS is arranged between the positive electrode MP and the negative electrode MN.

[0091] Thus, when the electrode material M is wound in the winding unit 20 , the electrode material M is wound in the order of the positive electrode MP—the separation membrane MS—the negative electrode MN—the separation membrane MS—the positive electrode MP.

[0092] On the other hand, in the electrode material M, the lengths of the electrodes MP and MN and the separation membrane MS differ depending on the position (location).

[0093] In this case, the lengths of the electrodes MP and MN and the separation membrane MS increase as they move from a position corresponding to the initial number of turns of the winding core JR to a position corresponding to the subsequent number of turns.

[0094] In this case, the lengths of the electrodes MP and MN and the separation membrane MS increase in proportion to the diameter or circumferential length of the core JR.

[0095] The processing unit 10 processes the end portions of the portions corresponding to the electrodes MP and MN so as to form the electrode tabs T.

[0096] That is, the electrode tab T is formed at one or more ends of the positive electrode MP and the negative electrode MN in the electrode material M.

[0097] When the processing unit 10 processes the end of the positive electrode MP so as to form the electrode tab T, the processing unit 10 may process the upper end of the positive electrode MP so as to form the electrode tab T at the upper end of the positive electrode MP.

[0098] Furthermore, when the processing unit 10 processes the end of the negative electrode MN so as to form the electrode tab T, the processing unit 10 processes the lower end of the negative electrode MN so as to form the electrode tab T at the lower end of the negative electrode MN.

[0099] That is, the electrode tab T is formed at an upper end portion of the positive electrode MP in the positive electrode MP, and is formed at a lower end portion of the negative electrode MN in the negative electrode MN.

[0100] Thus, when the electrode material M is wound, the electrode tab T of the positive electrode MP protrudes from the upper end surface of the winding core JR, and the electrode tab T of the negative electrode MN protrudes from the lower end surface of the winding core JR.

[0101] In this case, the protruding electrode tab T is connected to the positive electrode plate at the upper end surface of the winding core JR, and the protruding electrode tab T is connected to the negative electrode plate at the lower end surface of the winding core JR.

[0102] The processing unit 10 processes one or more of the upper end portion of the positive electrode MP and the lower end portion of the negative electrode MN so as to form the electrode tab T at one or more of the upper end portion of the positive electrode MP and the lower end portion of the negative electrode MN.

[0103] Below, for the sake of convenience of explanation, the explanation will focus on the example in which the processing unit 10 processes the upper end of the positive electrode MP and the electrode tab T is formed at the upper end of the positive electrode MP. The specific implementation of the winding device 100 can be implemented as an example in which the electrode tab T is formed at the lower end of the negative electrode MN and an example in which the electrode tab T is respectively formed at the upper end of the positive electrode MP and the lower end of the negative electrode MN. The contents described below may be applicable to the other embodiments described above in the same or modified form.

[0104] The processing unit 10 processes one or more of the upper end of the positive electrode MP and the lower end of the negative electrode MN so that the electrode tab T is formed in the predetermined pattern.

[0105] The predetermined pattern may be a pattern set according to the position of the electrode tab T corresponding to the specific zone SZ.

[0106] That is, the predetermined pattern may be a pattern in which the electrode tab T is arranged at a position in the specific zone SZ when the electrode material M is wound.

[0107] Here, if Figure 4 As shown, the specific region SZ is a partial region of the end surface and corresponds to an area connected to the electrode plate.

[0108] That is, the electrode tab T is disposed in the specific zone SZ, and thus can be connected to the electrode plate in the specific zone SZ.

[0109] The specific region SZ may be a region corresponding to an area welded to the electrode plate.

[0110] That is, the specific zone SZ may be formed according to the area welded to the electrode plate.

[0111] The specific zone SZ may be formed in plurality on the end surface.

[0112] In this case, if Figure 4 As shown, the specific areas SZ are formed at four locations in the cross direction.

[0113] On the other hand, in the specific region SZ, the electrode tabs T may be folded in the same direction.

[0114] That is, the electrode tabs T arranged in the specific region SZ may be folded in the same direction to form the specific region SZ.

[0115] Preferably, the electrode tab T is folded toward the center direction of the winding core JR so as to partially overlap with the electrode tabs arranged in front and behind.

[0116] Thus, the specific zone SZ is formed in a form in which the electrode tab T is folded and parts of adjacent electrode tabs are stacked.

[0117] like Figure 6 As shown, the predetermined pattern may be a pattern in which a formed group TP in which one or more electrode tabs T are formed and an unformed group EP in which the electrode tabs T are not formed are alternately formed.

[0118] Here, the predetermined pattern may include a plurality of the formed groups TP and the non-formed groups EP.

[0119] That is, the predetermined pattern may be formed so that a plurality of the formed groups TP are formed and a pattern in which the non-formed groups EP) are formed between the formed groups TP.

[0120] Thus, the predetermined pattern can be formed in a shape having a space equal to or larger than a predetermined distance between the formation groups TP.

[0121] Here, the formed group TP is formed at a position corresponding to the specific area SZ, and the unformed group EP is formed at a position corresponding to the blank area NZ outside the specific area SZ.

[0122] Thus, when the electrode material M is wound, the formed group TP forms the specific region SZ on the end surface, and the unformed group EP forms the blank region NZ on the end surface.

[0123] On the other hand, in the predetermined pattern, the position and number of the electrode tabs T and the intervals between the formation groups TP vary depending on the position (location) of the electrode material T.

[0124] In this case, the number of electrode tabs T to be formed and / or the intervals between the formed groups TP may increase as the position corresponding to the initial number of turns of the winding core JR approaches the position corresponding to the subsequent number of turns.

[0125] In this case, the number of electrode tabs T to be formed and / or the intervals between the formed groups TP increase in proportion to the diameter or the peripheral length of the winding core JR.

[0126] The processing unit 10 notches the end portion so that the electrode tab T is formed into the predetermined pattern.

[0127] That is, the processing unit 10 processes the end portion by notching the end portion so as to form the electrode tab T in the predetermined pattern.

[0128] The processing unit 10 processes the end portion so that the electrode tab T is formed into the predetermined pattern and the electrode tab T is arranged in a predetermined shape on the end surface when the electrode material M is wound.

[0129] Therefore, when the electrode material M is wound in the winding unit 20, Figure 4 As shown, the electrode tabs T formed in the predetermined pattern protrude toward the end surface to form a predetermined shape.

[0130] The predetermined shape may be a shape in which the blank areas NZ are formed on both sides of the specific area SZ, and the electrode tabs T less than a predetermined number are arranged in the blank areas NZ.

[0131] Here, the blank region SZ may be a region where the electrode tabs T having a number less than the predetermined number are arranged in any region other than the specific region SZ.

[0132] The predetermined shape is a shape formed on the end surface JRF of the winding core JR according to the predetermined pattern, such as Figure 7a As shown, a plurality of the specific regions SZ are formed, and the blank regions NZ are formed on both sides of the specific regions SZ.

[0133] In this case, the predetermined shape is formed by dividing the specific area SZ and the blank area NZ into a sector shape, and the specific area SZ and the blank area NZ are divided visibly by the electrode tab T protruding from the specific area SZ.

[0134] On the other hand, the above-mentioned prescribed shape may also be formed into Figure 7a The examples shown are different examples, in this case, such as Figure 7b As shown in FIG. 1 , the specific area SZ and the blank area NZ are formed into three, respectively, or as shown in FIG. Figure 7c As shown in FIG. 1 , the four specific areas SZ are formed into a cross, and the blank areas NZ are formed between the four specific areas SZ, or as shown in FIG. Figure 7d As shown, the specific area SZ and the blank area NZ are formed in two.

[0135] In this way, the electrode tab T is formed into the specified pattern at the end, and the specified shape is formed on the end surface JRF in the form of dividing the specific area SZ and the blank area NZ. The electrode plate is welded to the specific area SZ and electrically connected to the electrode tab T, and the electrolyte is injected through the blank area NZ.

[0136] In the winding device 100 , the winding unit 20 winds the electrode material M formed with the electrode tab T in the predetermined pattern into a cylindrical winding core JR.

[0137] The winding unit 20 is composed of a rotating body having a hollow cylindrical structure. When the electrode material M is fed, the winding unit 20 rotates in the direction in which the electrode material M is fed and winds the electrode material M on the circumferential surface.

[0138] The winding unit 20 winds the electrode material M in turns.

[0139] In this case, the electrode material M is wound in units of one turn.

[0140] In addition, the winding unit 20 winds the electrode material M in units of a plurality of turns.

[0141] In this case, the electrode material M is wound in units of four turns so that the positive electrode MP, the separator MS, the negative electrode MN, and the separator MS are respectively wound in one winding.

[0142] The winding unit 20 is driven by the control of the control unit 50 and winds the electrode material M into the winding core JR.

[0143] That is, the winding of the electrode material M in the winding unit 20 may be controlled by the control unit 50 .

[0144] In this case, the winding unit 20 winds the electrode material M by receiving pressure from the guide unit 30 .

[0145] In the winding device 100 , the guide portion 30 contacts a winding surface on which the electrode material M is wound, and applies pressure to the winding surface so that the electrode tab T is arranged in the specific zone SZ.

[0146] The guide unit 30 includes a rolling unit 31 that contacts the winding surface to guide the winding of the electrode material M, and a driving unit 32 that is controlled by the control unit 50 to move the position of the rolling unit 31 .

[0147] The rolling portion 31 is composed of a cylindrical structure made of elastic material and is in contact with the winding surface.

[0148] The rolling portion 31 is in contact with the winding surface, and applies pressure to the winding surface to maintain the elastic force of the electrode material M during the winding of the electrode material M.

[0149] Thus, the rolling unit 31 applies pressure to the winding surface to guide the winding of the electrode material M, so that the electrode material M is flatly wound around the winding unit 20 .

[0150] The rolling unit 31 is composed of a rotating body having a cylindrical structure, and when the winding unit 20 rotates to wind the electrode material M, the rolling unit 31 rotates together and applies pressure to the winding surface.

[0151] In this case, the rolling unit 31 is driven by the control of the control unit 50 , thereby guiding the winding of the electrode material M.

[0152] That is, the rotation of the rolling unit 31 is controlled by the control unit 50 .

[0153] In addition, when the winding unit 20 rotates to wind the electrode material M, the rolling unit 31 rotates due to friction with the winding surface, and applies pressure to the winding surface.

[0154] As the diameter of the winding core JR increases, the rolling portion 31 retreats further from the winding portion 20 , thereby changing the pressure applied to the winding surface.

[0155] As the diameter of the winding core JR increases, the spacing between the winding portion 20 and the rolling portion 31 decreases. When the pressure applied to the winding surface increases, the electrode material M may not be accurately wound due to the increased pressure. Therefore, as the diameter of the winding core JR increases, the rolling portion 31 retreats from the winding portion 20, thereby adjusting the pressure applied to the winding surface.

[0156] In this case, the rolling portion 31 retreats from the winding portion 20 due to the force of being pushed out from the winding surface due to the contact with the winding surface.

[0157] In addition, the position of the rolling unit 31 is changed by the driving unit 32 .

[0158] The driving unit 32 may be a servo motor provided on either side of the rolling unit 31 so as to be coupled to the rolling unit 31 .

[0159] The driving unit 32 is driven in one of the axial directions to move the position of the rolling unit 31 in the axial direction.

[0160] In this case, the rolling portion 31 is moved in the direction of the winding portion 20 by driving the rolling portion 31 or is moved in the opposite direction of the winding portion 20 by driving the rolling portion 31 .

[0161] The driving unit 32 is driven by the control of the control unit 50 to move the position of the rolling unit 31 .

[0162] That is, the position movement of the rolling portion 31 of the driving portion 32 may be controlled by the control portion 50 .

[0163] In this way, the guide portion 30 adjusts the pressure applied to the winding surface by the driving portion 32 that moves the position of the rolling portion 31 to change the pressure applied to the winding surface so that the electrode tab T is arranged in the specific zone SZ.

[0164] In this case, when it is necessary to increase the pressure applied to the winding surface, the driving unit 32 is driven in such a manner that the rolling unit 31 is positioned close to the winding unit 20, thereby increasing the pressure applied to the winding surface; and when it is necessary to reduce the pressure applied to the winding surface, the driving unit 32 is driven in such a manner that the rolling unit 31 is positioned away from the winding unit 20, thereby reducing the pressure applied to the winding surface.

[0165] In the winding device 100 , the detection unit 40 may be an encoder that detects the length of the winding material fed from the front end of the winding unit 20 .

[0166] The detection unit 40 is driven by the control of the control unit 50 to detect the input length.

[0167] The detection unit 40 detects a length of the electrode material M fed from the processing unit 10 to the winding unit 20 , and transmits the detection result to the control unit 50 .

[0168] Thus, the control unit 50 calculates the total length (total amount) of the electrode material M fed into the winding unit 20 based on the detection result, and determines the arrangement state based on the calculation result.

[0169] In the winding device 100 , the control unit 50 determines the arrangement state on the end surface JRF based on the detection result of the detection unit 40 , and controls the position of the guide unit 30 based on the determination result to adjust the pressure applied to the winding surface.

[0170] In this case, when it is determined that the arrangement state needs to be corrected, the position of the guide portion 30 is controlled to be moved so as to change the pressure applied to the winding surface.

[0171] The control unit 50 determines the arrangement state at every predetermined period to control the position of the guide unit 30 .

[0172] The predetermined period, which is a period for determining the arrangement state predetermined in the control unit 50 , may be a period based on a turn or a winding unit of the winding unit 20 .

[0173] In this case, when the winding unit 20 winds the electrode material M with four turns as one set, the predetermined period may be set to one turn or one set.

[0174] When the above-mentioned prescribed cycle is set to 1 circle, the above-mentioned control unit 50 determines the above-mentioned configuration state and controls the position of the above-mentioned guide unit 30 every time the above-mentioned winding unit 20 winds one circle. When the above-mentioned prescribed cycle is set to a set of 4 circles, the above-mentioned control unit 50 determines the above-mentioned configuration state and controls the position of the above-mentioned guide unit 30 every time the above-mentioned winding unit 40 winds 4 circles.

[0175] Thus, the control unit 50 adjusts the pressure every the predetermined period.

[0176] The above-mentioned predetermined period can also be set as an arbitrary number of revolutions.

[0177] In this case, the number of turns may be set to 10, and the control unit 50 determines the arrangement state and controls the position of the guide unit 30 every time the winding unit 20 winds 10 turns.

[0178] On the other hand, the predetermined period may be set to different periods according to time or the input length.

[0179] In this case, when the electrode material M is initially wound, a period A is set, and when the electrode material M is subsequently wound, a period B is set which is smaller than the period A.

[0180] In this case, the cycle of the control unit 50 determining the arrangement state and controlling the position of the guide unit 30 in the subsequent winding is shortened compared to the initial winding when the diameter of the winding core JR is small.

[0181] Thus, in the subsequent winding in which the diameter of the winding core JR increases and the winding of the electrode material M becomes difficult, the number of times the pressure is adjusted increases, thereby enabling accurate and stable winding.

[0182] The predetermined period is arbitrarily set by the user, and the setting may be changed while the winding device 100 is operating.

[0183] In this way, the control unit 50 that controls the position of the guide unit 30 according to the result of determining the arrangement state may maintain, advance, or retreat the position of the guide unit 30 according to the determination result, thereby adjusting the pressure.

[0184] That is, the control unit 50 may adjust the pressure by maintaining, advancing, or retracting the position of the guide unit 30 according to whether correction of the arrangement state is required.

[0185] In this case, the control unit 50 determines whether the arrangement state needs to be corrected at each predetermined period, and maintains, advances, or retreats the position of the guide unit 30 at each predetermined period, thereby adjusting the pressure.

[0186] The control unit 50 adjusts the guide unit 30 to move forward toward the winding unit 20 to increase the pressure, and adjusts the guide unit 30 to move backward from the winding unit 20 to reduce the pressure.

[0187] That is, when it is determined that the configuration state needs to be corrected, the control unit 50 moves the guide unit 30 forward toward the winding unit 20 to increase the pressure, or moves the guide unit 30 backward from the winding unit 20 to reduce the pressure.

[0188] The control unit 50 calculates any one of the specification values ​​of the winding core JR based on the detection result, compares the specification value with a reference value based on the number of windings of the electrode material M, and determines the arrangement state based on the comparison result.

[0189] In addition, the control unit 50 calculates the specification value based on the detection result, compares the specification value with a reference value based on the number of windings of the electrode material M, and determines whether correction of the configuration state is necessary based on the comparison result.

[0190] Here, the control unit 50 may determine whether the electrode tab T is disposed in the specific zone SZ according to the comparison result.

[0191] That is, the control unit 50 compares the specification value and the reference value, and determines whether the electrode tab T is wound so as to be arranged in the specific zone SZ based on the difference between the specification value and the reference value.

[0192] The above-mentioned specification value may be a value obtained by calculating any specification of the above-mentioned core JR.

[0193] The specification value is, for example, one or more of the diameter, circumferential length, end surface width, circumferential surface width, and weight of the core JR.

[0194] The reference value may be a numerical value set (or stored) in a table format based on the reference value of the specification value of the number of winding turns.

[0195] In this case, when the reference value is a reference value for the length of the circumference of the winding core JR, one turn may be set to a [mm], two turns may be set to b [mm], and n turns may be set to n [mm].

[0196] The above-mentioned specification value is preferably the diameter or radius of the above-mentioned winding core JR.

[0197] In this case, the reference value may be a reference diameter or radius of the winding core JR based on the number of winding turns.

[0198] That is, the control unit 50 determines the arrangement state based on the diameter or radius of the winding core JR.

[0199] In this case, when the calculated diameter (specification value) is consistent with the diameter of the reference value, it is judged that the above-mentioned electrode material M is wound according to the reference, and thus the above-mentioned electrode tab T is arranged in the above-mentioned specific area SZ according to the reference and is wound. When the calculated diameter (specification value) is inconsistent with the diameter of the reference value, it is judged that the above-mentioned electrode material M is not wound according to the reference, and the above-mentioned electrode tab T is not arranged in the above-mentioned specific area SZ according to the reference and is wound.

[0200] The control unit 50 calculates a total length (amount) of the electrode material M fed into the winding unit 20 based on the detection result, and calculates the specification value based on the calculation result and the current number of winding turns.

[0201] In this case, the specification value can be calculated based on the input length relative to the current number of winding turns.

[0202] In this way, the control unit 50 calculates the specification value based on the calculation result and the current number of winding turns, determines whether correction of the configuration state is required based on the comparison result of the specification value and the reference value, and controls the position of the guide unit 30 based on the judgment result.

[0203] When the difference between the specification value and the reference value is smaller than a first reference, the control unit 50 determines that the arrangement state does not need to be corrected, and thus maintains the position of the guide unit 30 .

[0204] Here, the difference between the standard value and the reference value indicates an absolute value.

[0205] That is, as a result of comparing the specification value with the reference value, if the absolute value of the difference between the specification value and the reference value is smaller than the first reference, the control unit 50 determines that the electrode material M is wound according to the reference, and the electrode tab T is arranged in the specific area SZ according to the reference, and thus determines that there is no need to correct the configuration state.

[0206] Thus, the control unit 50 determines that there is no need to correct the arrangement state and adjusts the pressure, thereby maintaining the position of the guide unit 30 .

[0207] When the difference between the specification value and the reference value is equal to or larger than the first reference, the control unit 50 determines that the arrangement state needs to be corrected, and moves the position of the guide unit 30 .

[0208] That is, as a result of comparing the specification value with the reference value, if the absolute value of the difference between the specification value and the reference value is greater than the first reference, the control unit 50 determines that the electrode material M is not wound according to the reference, and the electrode tab T is not configured in the specific area SZ according to the reference, and thus determines that the configuration state needs to be corrected.

[0209] Thus, when it is determined that the arrangement state needs to be corrected and the pressure needs to be adjusted, the control unit 50 advances or retreats the position of the guide unit 30 .

[0210] At this time, when the specification value is greater than the reference value, the control unit 50 moves the position of the guide unit 30 toward the winding unit 20 .

[0211] That is, when the specification value is greater than the reference value by more than the first reference, the control unit 50 determines that the pressure is less than the appropriate pressure for the current number of winding turns, the electrode material M is loosely wound, and the specification value becomes greater than the reference value. It is necessary to correct the configuration state so that the position of the guide portion 30 moves toward the winding portion 20 and is adjusted to increase the pressure applied to the winding surface.

[0212] Thus, the control unit 50 determines that the arrangement state needs to be corrected and the pressure needs to be adjusted, and when the specification value is greater than the reference value, the guide unit 30 is moved forward toward the winding unit 20 to increase the pressure.

[0213] In this case, the control unit 50 determines the advancing distance of the guide unit 30 according to the extent to which the specification value is greater than the reference value.

[0214] That is, the control unit 50 changes the advancing distance of the guide unit 30 according to the difference between the specification value and the reference value to adjust the increase degree of the pressure.

[0215] In this case, when the difference between the specification value and the reference value is A, the forward distance of the guide portion 30 can be determined to be X, with the pressure increased by a. When the difference between the specification value and the reference value is B which is greater than A, the forward distance of the guide portion 30 can be determined to be Y which is greater than X, with the pressure increased by b which is greater than a.

[0216] In addition, when the specification value is smaller than the reference value, the control unit 50 moves the guide unit 30 backward from the winding unit 20 .

[0217] That is, when the specification value is smaller than the reference value by more than the first reference, the control unit 50 determines that the pressure is greater than the appropriate pressure for the current number of winding turns, the electrode material M is tightly wound, and the specification value becomes smaller than the reference value, and the configuration state needs to be corrected, thereby adjusting the position of the guide portion 30 to move back from the winding portion 20 to reduce the pressure applied to the winding surface.

[0218] Therefore, when it is determined that the configuration state needs to be corrected and the pressure needs to be adjusted, if the specification value is smaller than the reference value, the control unit 50 moves the guide unit 30 back from the winding unit 20 to reduce the pressure.

[0219] In this case, the control unit 50 determines the retreat distance of the guide unit 30 according to the extent to which the specification value is smaller than the reference value.

[0220] That is, the control unit 50 changes the retreat distance of the guide unit 30 according to the difference between the specification value and the reference value to adjust the reduction degree of the pressure.

[0221] In this case, when the difference between the specification value and the reference value is C, the forward distance of the guide portion 30 is determined to be P so that the pressure is reduced by c, and when the difference between the specification value and the reference value is D which is greater than C, the backward distance of the guide portion 30 is determined to be Q which is greater than P so that the pressure is reduced by d which is greater than c.

[0222] On the other hand, when the difference between the specification value and the reference value is equal to or larger than the second reference exceeding the first reference, the control unit 50 determines that the predetermined pattern needs to be further corrected, and thus may change the setting of the processing unit 10 .

[0223] That is, when the difference between the specification value and the reference value is greater than the second reference, the control unit 50 determines that the formation position of the electrode tab T needs to be further adjusted and corrects the configuration state, thereby changing the setting of the processing unit 10 .

[0224] In this case, the control unit 50 may change the setting of the predetermined pattern to change the formation position of the electrode tab T.

[0225] The process described above of controlling the position of the guide portion 30 to adjust the pressure applied to the winding surface is based on Figure 8 The order shown is carried out.

[0226] First, when the detection unit 40 detects the input length ( S10 ), the detection unit 40 transmits the detection result to the control unit 50 .

[0227] When receiving the detection result, the control unit 50 calculates the specification value according to the detection result (S20), compares the specification value with the reference value (S30), and controls the position of the guide unit 30 according to the comparison result (S80a to S80c).

[0228] As a result of comparing the specification value and the reference value ( S30 ), when the specification value coincides with the reference value, the position of the guide portion 30 is maintained ( S80c ).

[0229] That is, when the specification value matches the reference value, the control unit 50 maintains the position of the guide unit 30 ( S80c ) and maintains the pressure applied to the winding surface.

[0230] On the other hand, the result of comparing the above-mentioned specification value and the above-mentioned reference value (S30), when the above-mentioned specification value is inconsistent with the above-mentioned reference value, the absolute value of the difference between the above-mentioned specification value and the above-mentioned reference value is compared with the above-mentioned first reference (S40), and based on the comparison result, the position of the above-mentioned guide part 30 is moved (S80a or S80b) or the position is maintained (S80c).

[0231] That is, when the specification value is inconsistent with the reference value, the control unit 50 advances or retreats the position of the guide unit 30 (S80a or S80b) according to the comparison result (S40) between the absolute value and the first reference, increases or decreases the pressure, or maintains the position of the guide unit 30 (S80c) to maintain the pressure.

[0232] As a result of comparing the absolute value with the first reference ( S40 ), when the absolute value is smaller than the first reference, the position of the guide portion 30 is maintained ( S80c ).

[0233] That is, when the absolute value is smaller than the first reference, the control unit 50 maintains the position of the guide unit 30 ( S80c ) and maintains the pressure applied to the winding surface.

[0234] As a result of comparing the absolute value with the first reference (S40), when the absolute value is greater than the first reference, the absolute value is compared with the second reference (S50), and the position of the guide portion 30 is advanced (S80a) or retracted (S80) according to the comparison result.

[0235] That is, when the absolute value is greater than the first reference, the control unit 50 increases or decreases the pressure by advancing or retreating (S80a or S80b) the position of the guide unit 30 according to a comparison result (S50) between the absolute value and the second reference.

[0236] In the result of comparing the above-mentioned absolute value with the above-mentioned second benchmark (S50), when the above-mentioned absolute value is smaller than the above-mentioned second benchmark, the size of the above-mentioned specification value and the above-mentioned benchmark value are compared (S60), and the position of the above-mentioned guide part 30 is advanced (S80a) or retracted (S80) according to the comparison result.

[0237] That is, when the absolute value is smaller than the second reference, the control unit 50 moves the position of the guide unit 30 forward or backward (S80a or S80b) according to the comparison result (S60) between the specification value and the reference value, thereby increasing or decreasing the pressure.

[0238] On the other hand, as a result of comparing the absolute value with the second benchmark (S50), when the absolute value is greater than the second benchmark, after the setting of the processing unit 10 is changed (S70), the size of the specification value and the benchmark value are compared (S60).

[0239] That is, when the absolute value is greater than the second reference, the control unit 50 changes the setting of the prescribed pattern (S70), and after changing the processing of the processing unit 10, the position of the guide unit 30 is advanced or retracted (S80a or S80b) according to the size comparison result (S60) of the specification value and the reference value, thereby increasing or decreasing the pressure.

[0240] As a result of comparing the size of the standard value and the reference value ( S60 ), when the standard value is larger than the reference value, the position of the guide portion 30 is advanced ( 80 a ).

[0241] That is, when the specification value is greater than the reference value, the control unit 50 moves the position of the guide unit 30 forward ( S80 a ) to increase the pressure.

[0242] As a result of comparing the size of the standard value and the reference value ( S60 ), when the standard value is smaller than the reference value, the position of the guide portion 30 is retracted ( 80 b ).

[0243] That is, when the specification value is smaller than the reference value, the control unit 50 moves the guide unit 30 backward ( S80b ) to reduce the pressure.

[0244] The winding device 100 adjusts the pressure and winds up the electrode material M through such a process, and can wind up the electrode material M so that the electrode tab T is arranged in the specific zone SZ.

[0245] The above describes an embodiment of the winding device 100. However, various modifications may be made to the described embodiment without departing from the scope of the present invention. The scope of the present invention is not limited to the described embodiment. The scope of the present invention should be defined according to the claims described below and the scope equivalent to the claims.

[0246] [Explanation of symbols]

[0247] 10: Processing section 20: Winding section

[0248] 30: Guiding unit 40: Detection unit

[0249] 50: Control unit 100: Electrode material winding device

Claims

1. An electrode material winding device for winding an electrode material, the electrode material winding device is characterized in that it comprises: A processing portion for processing one or more of the upper end and the lower end of the electrode material so as to form an electrode tab connected to the electrode plate in a predetermined pattern; A winding unit that winds the electrode material into a cylindrical winding core; a guide portion that contacts a winding surface on which the electrode material is wound, and applies pressure to the winding surface in such a manner that the electrode tab is arranged in a specific area corresponding to a portion of one or more end surfaces of the upper surface and the lower surface of the winding core; a detection unit configured to detect a length of the electrode material introduced from the front end of the winding unit; and The control unit determines the configuration state of the electrode tab according to the detection result of the detection unit, and controls the position of the guide unit to adjust the pressure according to the determination result.

2. The electrode material winding device according to claim 1, characterized in that: The electrode material comprises: Electrodes, which are divided into positive and negative electrodes; and A separation membrane separates the positive electrode and the negative electrode.

3. The electrode material winding device according to claim 2, characterized in that: The processed portion processes the end portion of a portion corresponding to the electrode so as to form the electrode tab.

4. The electrode material winding device according to claim 1, characterized in that: The predetermined pattern is a pattern based on the position of the electrode tab corresponding to the specific region.

5. The electrode material winding device according to claim 4, characterized in that: The predetermined pattern is a pattern in which a formed group in which one or more electrode tabs are formed and a non-formed group in which the electrode tabs are not formed alternately.

6. The electrode material winding device according to claim 1, characterized in that: The processing portion notches the end portion so that the electrode tab is formed into the predetermined pattern.

7. The electrode material winding device according to claim 1, characterized in that: The processing unit processes the end portion so that the electrode tab is formed in the predetermined pattern and the electrode tab is arranged in a predetermined shape on the end surface when the electrode material is wound.

8. The electrode material winding device according to claim 7, characterized in that: The predetermined shape is a shape in which blank areas are formed on both sides of the specific area, and the electrode tabs are arranged in the blank areas in a number less than a predetermined number.

9. The electrode material winding device according to claim 1, characterized in that: The guide part includes: a rolling portion that contacts the winding surface to guide the winding of the electrode material; and A driving unit is controlled by the control unit to move the position of the rolling unit.

10. The electrode material winding device according to claim 1, characterized in that: The control unit determines the arrangement state at every predetermined period to control the position of the guide unit.

11. The electrode material winding device according to claim 1, characterized in that: The control unit adjusts the pressure by maintaining, advancing or retracting the position of the guide unit according to the determination result.

12. The electrode material winding device according to claim 11, characterized in that: The control unit adjusts the position of the guide unit to increase the pressure by advancing the position of the guide unit toward the winding unit, and adjusts the position of the guide unit to decrease the pressure by retreating the position of the guide unit from the winding unit.

13. The electrode material winding device according to claim 1, characterized in that: The control unit calculates any one of the specification values ​​of the winding core based on the detection result, compares the specification value with a reference value based on the number of windings of the electrode material, and determines whether correction of the configuration state is necessary based on the comparison result.

14. The electrode material winding device according to claim 13, characterized in that: When the difference between the specification value and the reference value is smaller than a first reference, the control unit determines that there is no need to correct the arrangement state and maintains the position of the guide unit.

15. The electrode material winding device according to claim 13, characterized in that: When the difference between the specification value and the reference value is equal to or larger than a first reference, the control unit determines that the arrangement state needs to be corrected and moves the position of the guide unit.

16. The electrode material winding device according to claim 15, characterized in that: When the specification value is greater than the reference value, the control unit advances the position of the guide unit toward the winding unit.

17. The electrode material winding device according to claim 16, characterized in that: The control unit determines an advancing distance of the guide unit according to the extent to which the specification value is greater than the reference value.

18. The electrode material winding device according to claim 15, characterized in that: When the specification value is smaller than the reference value, the control unit moves the guide unit back from the winding unit.

19. The electrode material winding device according to claim 18, characterized in that: The control unit determines a retreat distance of the guide unit according to the extent to which the specification value is smaller than the reference value.

20. The electrode material winding device according to claim 15, characterized in that: When the difference between the specification value and the reference value is equal to or larger than a second reference exceeding the first reference, the control unit determines that further correction of the predetermined pattern is necessary and changes the setting of the processing unit.

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