Electrode feeding line error adjustment system and electrode feeding line error adjustment mehtod thereby

Abstract

The present invention aims to provide an electrode meandering correction system. The configuration of the present invention is characterized by including an incident side roller (120) through which an electrode (10) passes via an outer surface, an exit side roller (130) through which the electrode (10) that has passed via the outer surface of the incident side roller (120) passes via an outer surface, a meandering correction hinge (140) connecting one end of the incident side roller (120) to a pivot guide, and a meandering corrector (150) connected to the other end of the incident side roller (120). The electrode meandering correction system according to the present invention can reduce product defects that may occur due to tension imbalance at both ends of the electrode by introducing a new structure, and the LPC position correction can respond immediately, thereby improving the stability of the production process and improving product quality.

Description

Technology Field

[0001] The present invention relates to an electrode meandering correction system, and more specifically, to a secondary battery electrode meandering correction system for solving problems such as electrode meandering that occur during electrode position control in a two-roll LPC unit among secondary battery manufacturing facilities. Background Technology

[0003] Secondary batteries are generally manufactured by stacking multiple separators between multiple positive and negative electrodes. During the manufacturing process of a secondary battery, a reel electrode (a continuously connected electrode, which is referred to as an electrode for convenience below) is wound in a roll shape on one winding roll to manufacture the secondary battery. The electrode is formed by coating an active material onto a thin aluminum or copper foil, with an uncoated portion and an active material coated portion exposed at one end. The electrode wound on one unwinding roll is wound in a roll shape onto the other winding roll, and operations such as forming an electrode tab through notching are performed.

[0004] Meanwhile, during the secondary battery manufacturing process, it is necessary to perform the manufacturing process by aligning the electrodes to the correct position and transporting them.

[0005] However, conventionally, the imbalance in electrode tension causes a decrease in the ability to correct the meandering of the pivot guide, and as a result, there is a problem of a high defect rate during the secondary battery manufacturing process. Prior art literature

[0007] Patent Registration No. 10-2628641 (Registered January 19, 2024) Published Patent No. 10-2024-0071035 (Published May 22, 2024) The problem to be solved

[0008] The present invention aims to provide a secondary battery electrode misalignment correction system to solve problems such as electrode misalignment occurring during electrode position control in a two-roll LPC unit among the secondary battery manufacturing facilities of the present invention.

[0009] In conventional structures, tension imbalance at both ends of the electrode can cause slip between the roller and the electrode when the pivot guide rotates to correct meandering, and this problem results in the electrode position control time showing less-than-expected effectiveness, causing a large number of product defects. The present invention aims to improve this problem and reduce product defects through accurate electrode position control. means of solving the problem

[0011] According to the present invention for solving the above-mentioned problem, an electrode meandering correction system is provided, characterized by comprising: an incident side roller (120) through which an electrode (10) passes via an outer surface; an exit side roller (130) through which the electrode (10) that has passed via the outer surface of the incident side roller (120) passes via an outer surface; a meandering correction hinge (140) connecting one end of the incident side roller (120) to a pivot guide; and a meandering corrector (150) connected to the other end of the incident side roller (120).

[0012] The above-mentioned meandering corrector (150) is characterized by being composed of a meandering corrector cylinder in which a cylinder rod is connected to a roller shaft protruding to the other end of the incident side roller (120) by a hinge.

[0013] It is characterized by further including a regulator (160) disposed between the incoming roller (120) and the outgoing roller (130) to regulate the tension of the electrode (10).

[0014] The regulator (160) is configured to consist of a regulating cylinder in which a regulating guide (162) is coupled to a cylinder rod, and is configured so that the electrode (10) passes through the regulating guide (162), and is characterized by being configured to regulate the tension of the electrode (10) as the regulating guide (162) is raised by the raising and lowering of the cylinder rod of the regulating cylinder.

[0015] It is characterized by further including an LPC sensor (170) positioned facing the electrode (10) that has passed through the outer surface of the above-mentioned output side roller (130).

[0016] According to the present invention, an electrode meandering correction method using an electrode meandering correction system comprising an incident side roller (120) through which an electrode (10) passes via an outer surface, an exit side roller (130) through which the electrode (10) that has passed via the outer surface of the incident side roller (120) passes via an outer surface, a meandering correction hinge (140) connecting one end of the incident side roller (120) to a pivot guide, and a meandering corrector (150) connected to the other end of the incident side roller (120), the method comprising: an electrode (10) transfer step of transferring the electrode (10) so as to pass through the outer surfaces of the incident side roller (120) and the exit side roller (130); and, when meandering occurs during the transfer of the electrode (10), horizontally moving the other end of the incident side roller (120) relative to the hinge at one end of the incident side roller (120) by driving the meandering corrector (150). An electrode meandering correction method is provided, characterized by including an electrode (10) meandering correction step for correcting the meandering of the electrode (10).

[0017] The method is characterized by detecting the deviation of the electrode (10) during transport by means of an LPC sensor (170) positioned at a position facing the electrode (10) that has passed through the outer surface of the output side roller (130), and by operating the deviation corrector (150), moving the other end of the input side roller (120) horizontally relative to the hinge on the end side so as to control the deviation of the electrode (10). Effects of the invention

[0019] The electrode meandering correction system according to the present invention can reduce product defects that may occur due to tension imbalance at both ends of the electrode by introducing a new structure, and the LPC position correction can respond immediately, thereby improving the stability of the production process and improving product quality. Brief explanation of the drawing

[0021] FIG. 1 is a plan view schematically showing the structure of an electrode meandering correction system according to the present invention. FIG. 2 is a front view of FIG. 1, FIG. 3 is a front view schematically showing the structure of an electrode meandering correction system according to another aspect of the present invention. FIG. 4 is a front view schematically showing the structure of an electrode meandering correction system according to another aspect of the present invention. Specific details for implementing the invention

[0022] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. The objectives, features, and advantages of the present invention will be more easily understood by referring to the attached drawings and the following detailed description. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the present invention, such detailed description is omitted.

[0023] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the present invention. These terms are intended only to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by the terms. Where it is stated that a component is "connected," "combined," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but that another component may also be "connected," "combined," or "connected" between each component.

[0025] FIG. 1 is a plan view schematically showing the structure of an electrode meandering correction system according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a front view schematically showing the structure of an electrode meandering correction system according to another aspect of the present invention, and FIG. 4 is a front view schematically showing the structure of an electrode meandering correction system according to yet another aspect of the present invention.

[0026] Referring to the drawings, the electrode meandering correction system according to the present invention includes an incident side roller (120) and an exit side roller (130), a meandering correction hinge (140) connecting one end of the incident side roller (120) to a pivot guide (141), and a meandering corrector (150).

[0027] The electrode (10) passes through the outer surface of the above-mentioned incident side roller (120). The electrode (10), which is transported by the electrode (10) feeding part, is configured to pass through while its lower surface is in contact with the outer surface of the incident side roller (120).

[0028] The electrode (10) passes through the outer surface of the output side roller (130). The electrode (10), having passed through the outer surface of the input side roller (120), passes through the outer surface. The electrode (10), which is transported by the electrode (10) feeding section, passes through with its lower surface in contact with the outer surface of the input side roller (120), and is configured so that the lower surface of the electrode (10) passes through the outer surface of the output side roller (130).

[0029] The above-mentioned meandering correction hinge (140) connects one end of the incident side roller (120) to the pivot guide.

[0030] The above-mentioned meandering corrector (150) is configured to be connected to the other end of the incident side roller (120).

[0031] At this time, the meandering corrector (150) may be composed of a meandering corrector cylinder in which a cylinder rod is connected to a roller shaft protruding from the other end of the incident side roller (120) by a hinge. Depending on the extension and retraction of the cylinder rod of the meandering corrector cylinder, the incident side roller (120) is operated to be lifted up or down relative to the meandering corrector hinge (140).

[0032] The present invention further includes a regulator (160). The regulator (160) is positioned between the incident side roller (120) and the exit side roller (130), and the tension of the electrode (10) is adjusted by the driving of the regulator (160).

[0033] At this time, the regulator (160) is composed of a regulating cylinder in which a regulating guide (162) is coupled to a cylinder rod, and the electrode (10) is configured to pass through the regulating guide (162).

[0034] The tension of the electrode (10) can be adjusted as the adjustment guide (162) is raised by the raising and lowering of the cylinder rod of the regulating cylinder.

[0035] Additionally, it further includes an LPC sensor (170) positioned facing the electrode (10) that has passed through the outer surface of the aforementioned output side roller (130).

[0036] When the LPC sensor (170) detects the meandering correction of the electrode (10), the meandering corrector (150) is driven, and the incident side roller (120) is operated to be lifted up or down relative to the meandering correction hinge (140), thereby allowing the meandering distance (curvature amount) of the electrode (10) to be automatically corrected.

[0037] In the present invention, the meandering corrector (150) is composed of a meandering correction cylinder, and when the LPC sensor (170) detects the meandering correction of the electrode (10), the cylinder rod of the meandering correction cylinder is extended and retracted, so that the incident side roller (120) is operated to be lifted up or lowered relative to the meandering correction hinge (140), and as a result, the incident side roller (120) is operated to be lifted up or lower relative to the meandering correction hinge (140), thereby allowing the meandering distance (curvature amount) of the electrode (10) to be automatically corrected.

[0038] Meanwhile, the present invention provides an electrode meandering correction method using an electrode meandering correction system comprising an incident side roller (120) through which an electrode (10) passes via an outer surface, an exit side roller (130) through which the electrode (10) that has passed via the outer surface of the incident side roller (120) passes via an outer surface, a meandering correction hinge (140) connecting one end of the incident side roller (120) to a pivot guide, and a meandering corrector (150) connected to the other end of the incident side roller (120).

[0039] The electrode meandering correction method using the electrode meandering correction system according to the present invention is characterized by including an electrode (10) transfer step of transferring the electrode (10) so as to pass through the outer surface of the incident side roller (120) and the exit side roller (130), and an electrode (10) meandering correction step of correcting the meandering of the electrode (10) by horizontally moving the other end of the incident side roller (120) relative to the hinge at one end of the incident side roller (120) by driving the meandering correction device (150) when meandering occurs during the transfer of the electrode (10).

[0040] The electrode meandering correction method of the present invention detects the meandering of the electrode (10) during transport by means of an LPC sensor (170) positioned at a location facing the electrode (10) that has passed through the outer surface of the exit side roller (130), and controls the meandering of the electrode (10) by operating the meandering correction device (150) to horizontally move the other end of the entrance side roller (120) relative to the hinge on the end side.

[0041] In the present invention, to improve the existing two-roll LPC structure, a hinge (hinge pin) capable of tilting the roller left and right is installed on the incident side roller (120) in the direction of the non-retaining part of the electrode (10) and a serpentine correction cylinder is installed in the direction of the retaining part of the electrode (10).

[0042] Through this, the tension balance at both ends of the electrode (10) can be adjusted. The entrance-side meandering correction cylinder sets the pressure value of the regulator (160) to be equal to or slightly lower than the output value of the dancer unit that controls the web tension. The meandering correction cylinder always moves forward to push the electrode (10) to maintain the tension of the electrode (10) on the retaining-side roller, and when it receives a tension greater than the set cylinder pressure value, the cylinder air flows backward and is pushed in the reverse direction, thereby maintaining the tension of the electrode (10) on the non-retaining-side roller. Through this, the tension balance at both ends of the electrode (10) can be maintained at all times.

[0043] Accordingly, the electrode meandering correction system according to the present invention can reduce product defects that may occur due to tension imbalance at both ends of the electrode (10) by introducing a new structure, and the LPC position correction can respond immediately, thereby improving the stability of the production process and improving product quality.

[0044] In addition, through the present invention, a positive effect can be obtained on tension imbalance caused by the curvature of the web (the curvature of the electrode (10)), and this acts as an important factor that can improve the stability of the production process and increase the ratio of good products.

[0045] Meanwhile, in the present invention, the adjustment guide (162) is further provided with an upper adjustment guide roll (162UAR) and a lower adjustment guide roll (162LAR), so that when the electrode (10) passes between the upper adjustment guide roll (162UAR) and the lower adjustment guide roll (162LAR), the upper adjustment guide roll (162UAR) and the lower adjustment guide roll (162LAR) roll to offset the frictional force with the electrode (10).

[0046] Therefore, there is an effect of preventing scratches on the electrode (10) due to friction when both sides of the electrode (10) pass in contact with the outer surface of the upper control guide roll (162UAR) and the lower control guide roll (162LAR).

[0047] In addition, an anti-static coating portion (163) is provided on the outer surface of the upper control guide roll (162UAR) and the lower control guide roll (162LAR), so that both sides of the electrode (10) pass in contact with the anti-static coating portion (163) of the upper control guide roll (162UAR) and the lower control guide roll (162LAR), thereby preventing the electrode (10) from being damaged by static electricity during transport.

[0049] Specific embodiments of the present invention have been described above. However, those skilled in the art will understand that the spirit and scope of the present invention are not limited to these specific embodiments, and that various modifications and variations are possible within the scope of not altering the essence of the invention.

[0050] Accordingly, the embodiments described above are provided to fully inform those skilled in the art of the scope of the invention and should be understood as illustrative in all respects and not restrictive, and the invention is defined only by the scope of the claims. Explanation of the symbols

[0052] 10. Electrode 120. Incident side roller 130. Outgoing roller 140. Meandering correction hinge 150. Swing Corrector 160. Regulator 162. Adjustment Guide 162UAR. Upper adjustment guide roll 162LAR. Lower adjustment guide roll 163. Antistatic coating part 170. LPC Sensor

Claims

Claim 1 An electrode meandering correction system characterized by comprising: an incident side roller (120) through which an electrode (10) passes via an outer surface; an exit side roller (130) through which the electrode (10), having passed via the outer surface of the incident side roller (120), passes via an outer surface; a meandering correction hinge (140) connecting one end of the incident side roller (120) to a pivot guide (141); and a meandering corrector (150) connected to the other end of the incident side roller (120). Claim 2 An electrode meandering correction system according to claim 1, wherein the meandering correction device (150) is composed of a meandering correction cylinder in which a cylinder rod is connected to a roller shaft protruding to the other end of the incident side roller (120) by a hinge. Claim 3 An electrode skew correction system according to claim 1, further comprising a regulator (160) disposed between the incident side roller (120) and the exit side roller (130) to regulate the tension of the electrode (10). Claim 4 In paragraph 3, the regulator (160) is configured as a regulating cylinder in which a regulating guide (162) is coupled to a cylinder rod, and the electrode (10) is configured to pass through the regulating guide (162), and the tension of the electrode (10) is adjusted as the regulating guide (162) is raised by the raising and lowering of the cylinder rod of the regulating cylinder. This characterizes an electrode meandering correction system. Claim 5 An electrode skew correction system according to claim 1, further comprising an LPC sensor (170) positioned facing the electrode (10) that has passed through the outer surface of the output side roller (130). Claim 6 A method for correcting electrode meandering using an electrode meandering correction system comprising: an incident side roller (120) through which an electrode (10) passes via an outer surface; an exit side roller (130) through which the electrode (10), having passed via the outer surface of the incident side roller (120), passes via an outer surface; a meandering correction hinge (140) connecting one end of the incident side roller (120) to a pivot guide; and a meandering corrector (150) connected to the other end of the incident side roller (120), wherein the method comprises: an electrode (10) transfer step of transferring the electrode (10) so as to pass through the outer surfaces of the incident side roller (120) and the exit side roller (130); and, when meandering occurs during the transfer of the electrode (10), horizontally moving the other end of the incident side roller (120) relative to the hinge at one end of the incident side roller (120) by driving the meandering corrector (150), thereby... A method for correcting electrode misalignment characterized by including an electrode (10) misalignment correction step for correcting the misalignment of the electrode (10). Claim 7 A method for correcting electrode deviation according to claim 6, characterized in that the deviation of the electrode (10) during transport is detected by an LPC sensor (170) positioned at a location facing the electrode (10) that has passed through the outer surface of the output side roller (130), and the deviation of the electrode (10) is controlled by horizontally moving the other end of the input side roller (120) relative to the hinge on the end side by the operation of the deviation corrector (150).

Images