A Battery Cell Taping Device And A Battery Cell Taping Method Using The Same

Abstract

The present invention relates to a battery cell taping device and a battery cell taping method using the same, and more specifically, to a battery cell taping device and a battery cell taping method using the same, comprising a cartridge fixing part for fixing a tape cartridge containing a tape, a tape extraction part for extracting a tape of a certain length from the tape cartridge, a displacement sensor for measuring the length of the tape extracted, a tape cutting part for cutting the extracted tape, a tape attachment part for attaching the tape to a battery cell, and a vision sensor located above the tape attachment part for measuring the position of the tape.

Description

Technology Field

[0001] The present invention relates to a battery cell taping device and a battery cell taping method using the same, and more specifically, to a battery cell taping device and a battery cell taping method using the same that can measure the position of the tape and attach it to a more accurate position. Background Technology

[0002] Recently, due to air pollution caused by the use of fossil fuels and the development of alternative energy sources resulting from energy depletion, the demand for secondary batteries capable of storing generated electrical energy is increasing.

[0003] Rechargeable batteries, which serve as an indispensable energy source for various electronic devices in modern society, are seeing increased capacity requirements due to the growing usage and complexity of mobile devices and the development of electric vehicles. While multiple battery cells are arranged in small devices to meet user demand, vehicles utilize battery modules that electrically connect multiple battery cells, or battery packs equipped with multiple such modules.

[0004] To minimize volume increase, these battery cells are secured by attaching tape so that the sealing or extension portion of the cell case is in close contact with the storage portion of the cell case.

[0005] FIG. 1 is a drawing showing a taping device according to the prior art. As shown in FIG. 1, the taping device comprises a tape supply unit (10) for supplying tape, a tape clamping unit (20) for withdrawing tape, a tape cutting unit (30) for cutting the withdrawn tape, and a tape adsorption block (40).

[0006] A taping device according to the prior art attaches a tape drawn out through a tape clamping part (20) to a battery cell, but it has a problem in that it cannot detect and prevent tape attachment errors because it is not equipped with a device to measure the position of the drawn-out tape and the tape fixed by the tape clamping part (20). Prior art literature

[0007] Korean Registered Patent Publication No. 2111445 The problem to be solved

[0008] The present invention aims to solve the above-mentioned problems by providing a battery cell taping device that measures the position of the tape and attaches the tape to a more accurate position, and a battery cell taping method using the same. means of solving the problem

[0009] A battery cell taping device according to the present invention for solving the above-mentioned problems comprises: a cartridge fixing part (100) for fixing a tape cartridge (T) containing a tape (t); a tape extraction part (200) for extracting a tape of a certain length from the tape cartridge (T); a displacement sensor (300) for measuring the length of the tape (t) being extracted; a tape cutting part (400) for cutting the extracted tape (t); a tape attachment part (500) for attaching the tape to a battery cell; and a vision sensor (600) located above the tape attachment part (500) for measuring the position of the tape.

[0010] In addition, the battery cell taping device according to the present invention is characterized by including a position alignment unit (700) for aligning the position of the battery cell.

[0011] In addition, the battery cell taping device according to the present invention is characterized by including a tape pressing part (800) that presses the tape attached to the battery cell.

[0012] In addition, in the battery cell taping device according to the present invention, the tape extraction unit (200) is characterized by including a gripper (210) for gripping the tape and a first moving rail (220) for moving the gripper (220) in the direction of extraction of the tape.

[0013] In addition, in the battery cell taping device according to the present invention, the displacement sensor (300) is characterized by including a displacement sensor body part (310) extended in a vertical direction, an incision part (320) formed by cutting a certain upper area of ​​the displacement sensor body part (310), and a displacement measuring part (330) provided at the upper and lower parts of the incision part (320), respectively.

[0014] In addition, in the battery cell taping device according to the present invention, the tape attachment part (500) is characterized by including a tape attachment head (510) for gripping the tape, a rotating part (520) for rotating the tape attachment head (510) in a horizontal direction, a lifting drive part (530) for moving the tape attachment head (510) in a vertical direction, and a second moving rail (540) for moving the tape attachment head (510) to the attachment position of the tape.

[0015] In addition, in the battery cell taping device according to the present invention, the tape attachment head (510) is characterized by having a bar shape extended to a certain length, and the tape (t) is gripped on the upper surface of the bar shape.

[0016] In addition, the battery cell taping device according to the present invention is characterized in that one or more vacuum suction holes are formed on the upper surface of the bar shape.

[0017] In addition, the battery cell taping method according to the present invention is characterized by comprising: a first step of extracting a tape from a tape cartridge; a second step of gripping the tape with a tape attachment head of a tape attachment portion; a third step of cutting the gripped tape; a fourth step of measuring the position of the tape through a vision sensor and adjusting the position of the tape; a fifth step of attaching the tape to a battery cell; and a sixth step of applying pressure to the tape attached to the battery cell.

[0018] In addition, the battery cell taping method according to the present invention is characterized in that a step of adjusting and aligning the position of the battery cell is performed prior to the fifth step.

[0019] In addition, the battery cell taping method according to the present invention is characterized in that, in the first step, the tape is ejected by a set length through a displacement sensor.

[0020] In addition, the battery cell taping method according to the present invention is characterized by further performing a step of adjusting the position of the tape attachment head of the tape attachment part by measuring the position of the tape extracted through a vision sensor prior to the second step.

[0021] In addition, in the battery cell taping method according to the present invention, the tape extracted in the first step is characterized by having an adhesive surface coated with an adhesive member located on the upper side.

[0022] In addition, the battery cell taping method according to the present invention is characterized by further including a step of determining whether there is a defect by measuring the attachment state of the tape after the sixth step. Effects of the invention

[0023] According to the battery cell taping device and battery cell taping method using the same according to the present invention, the position of the tape can be adjusted through a tape attachment head by referring to the position measured by a vision sensor, so there is an advantage that the tape can be attached more accurately at a predetermined position. Brief explanation of the drawing

[0024] FIG. 1 is a drawing showing a taping device according to the prior art. FIG. 2 is a perspective view showing a battery cell taping device according to a preferred embodiment of the present invention. FIG. 3 is a perspective view showing a displacement sensor according to a preferred embodiment of the present invention. FIG. 4 is a perspective view showing a tape attachment portion according to a preferred embodiment of the present invention. FIG. 5 is a flowchart illustrating a battery cell taping method according to a preferred embodiment of the present invention. FIG. 6 is a drawing showing a battery cell with tape attached using a battery cell taping device according to a preferred embodiment of the present invention. Specific details for implementing the invention

[0025] In this application, terms such as “comprising,” “having,” or “comprising” are intended to specify the existence of the features, numbers, steps, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0026] In addition, the same reference numerals are used for parts having similar functions and operations throughout the drawings. Throughout the specification, when a part is described as being connected to another part, this includes not only cases where they are directly connected, but also cases where they are indirectly connected with other elements in between. Furthermore, unless specifically stated otherwise, the inclusion of a certain component does not exclude other components but implies that additional components may be included.

[0027] Hereinafter, a battery cell taping device according to the present invention and a battery cell taping method using the same will be described with reference to the attached drawings.

[0028] FIG. 2 is a perspective view showing a battery cell taping device according to a preferred embodiment of the present invention, FIG. 3 is a perspective view showing a displacement sensor according to a preferred embodiment of the present invention, and FIG. 4 is a perspective view showing a tape attachment part according to a preferred embodiment of the present invention.

[0029] Referring to FIGS. 2 to 4, a battery cell taping device according to a preferred embodiment of the present invention comprises a cartridge fixing part (100), a tape extraction part (200), a displacement sensor (300), a tape cutting part (400), a tape attachment part (500), a vision sensor (600), a position alignment part (700), and a tape pressing part (800).

[0030] First, the cartridge fixing part (100) is for fixing the tape cartridge (T), in which the tape is embedded, in a predetermined position.

[0031] The upper part of the cartridge fixing part (100) can be formed in a shape that can wrap around and fix and support a part of the lower surface and parts of both sides of the tape cartridge (T).

[0032] At this time, the cartridge fixing part (100) is provided with a height-adjustable structure so that the cartridge (T) can be adjusted according to the height at which it is to be positioned.

[0033] The tape extraction unit (200) is configured to grip and extract the tape of the tape cartridge (T) and includes a gripper (210) and a first moving rail (220).

[0034] The gripper (210) grips and secures one end of the tape and can be formed in the shape of a clamp.

[0035] Here, the gripper (210) grips a portion of the adhesive surface of the tape when gripping the tape, and during the process of releasing the grip, the tape may be pulled by the adhesive force and its position may be deformed.

[0036] At this time, a pin stopper (not shown) capable of pressing a portion of the upper surface of the adhesive surface of the tape may be provided.

[0037] These pin stoppers (not shown) can be adjusted in length in the vertical direction (Z-axis direction), and the lower part that comes into close contact with the adhesive surface may be conical in shape to minimize contact with the adhesive surface.

[0038] Meanwhile, the first moving rail (220) is extended a certain length in the longitudinal direction (Y-axis direction) and is connected to one side of the gripper (210) to move and guide the gripper (210) in the longitudinal direction (Y-axis direction).

[0039] At this time, the first moving rail (220) can move the gripper (210) in the longitudinal direction (Y-axis direction) to extract the tape held and fixed to the gripper (210) from the tape cartridge (T).

[0040] Next, the displacement sensor (300) is configured to measure the length of the tape ejected by the tape ejection unit (200) and includes a displacement sensor body (310), an incision (320), and a displacement measuring unit (330).

[0041] The displacement sensor (300) is located between the cartridge fixing part (100) and the tape attachment part (500).

[0042] The displacement sensor body (310) may be in the shape of a rod extended for a certain length in the vertical direction (Z-axis direction).

[0043] The cut portion (320) is formed by cutting a portion of the upper part of the displacement sensor body (310) and is located on the path where the gripper (210) of the tape extraction portion (200) moves.

[0044] To explain in more detail, when the gripper (210) moves toward the tape cartridge (T) to grip the tape, it penetrates the cut portion (320), and after gripping the tape, it re-penetrates the cut portion (320) and returns.

[0045] The displacement measuring unit (330) is a sensing device located at the incision unit (320) that measures the length of the tape being ejected and moved by the tape ejection unit (200) and sends the length value of the ejected tape to the control unit (not shown).

[0046] The displacement measuring unit (330) is provided at the upper and lower portions of the cut portion (320) and is provided to extend a certain length in a direction facing each other, so that the length value of the tape can be measured at the upper and lower portions and calculated more accurately.

[0047] In addition, the displacement measuring unit (330) measures the length value of the tape being ejected and enables the tape to be ejected for a set length.

[0048] The tape cutting section (400) is located between the cartridge fixing section (100) and the displacement sensor (300) and cuts the tape when the tape is ejected to a set length.

[0049] To explain in more detail, the tape cutting section (400) is equipped with a cutting blade at the top and is structured to cut the tape by moving up and down in a vertical direction.

[0050] The tape attachment unit (500) attaches the extracted tape to the battery cell and is configured to include a tape attachment head (510), a rotating unit (520), a lifting drive unit (530), and a second moving rail (540).

[0051] First, the tape attachment head (510) is formed in the shape of a rod extending in the longitudinal direction (Y-axis direction) for a certain length, for gripping the tape ejected by the tape ejection unit (200).

[0052] One or more vacuum suction holes may be formed on the upper surface of the tape attachment head (510) for suction gripping when in close contact with the lower surface of the tape.

[0053] Additionally, the tape attachment head (510) is not limited to electrostatic methods, as long as it facilitates easy gripping and detachment of the tape.

[0054] The rotating part (520) is capable of rotating in the horizontal direction (XY axis direction), with one side connected to the tape attachment head (510) and the lower side connected to the lifting drive part (530).

[0055] The rotating part (520) can rotate according to the position of the tape measured by the vision sensor (600) to adjust the position of the tape.

[0056] To explain in more detail, the rotating part (520) can adjust the position where the tape attachment head (510) located on one side grips the tape by referring to the position of the tape measured through the vision sensor (600).

[0057] In addition, the tape held by the tape attachment head (510) can be rotated and adjusted so that it is parallel to the attachment position, thereby preventing tape attachment defects.

[0058] The lifting drive unit (530) is connected to the lower side of the rotating unit (520) and raises and lowers the rotating unit (520) in the vertical direction (Z-axis direction).

[0059] At this time, the lifting drive unit (530) is capable of rising and falling by supplying and recovering compressed liquid in the case of a hydraulic cylinder, and may be configured to further include a cylinder tube through which the liquid moves and a hydraulic pump capable of supplying or recovering fluid.

[0060] Additionally, the lifting drive unit (530), when it is a pneumatic cylinder, is capable of rising and falling by supplying and recovering compressed air, and may be configured to include a cylinder tube through which air moves and an air pump capable of supplying or recovering compressed air.

[0061] Additionally, the lifting drive unit (530) may be in the form of a screw capable of rising and falling according to rotation, and the lifting drive unit (530) may be configured to include a motor that enables the screw to rise and fall and a connecting member that can drive the screw-type lifting drive unit (530) according to the driving of the motor.

[0062] The second moving rail (540) is connected to the lower part of the lifting drive unit (530) and guides the movement and movement path in the width direction (X-axis direction) of the lifting drive unit (530).

[0063] At this time, the width direction (X-axis direction) of the tape attachment part (500) is the direction in which the battery cell to be attached to the tape is located, and the second moving rail (540) moves the lifting drive part (530), thereby enabling the tape attachment head (510), which is indirectly connected to the lifting drive part (530), to move in the direction in which the battery cell is located.

[0064] The vision sensor (600) measures the position of the extracted tape and is located at the top of the device.

[0065] The vision sensor (600) first measures the position of the tape ejected by the tape ejection unit (200) and secondly measures the position of the tape when the tape is held by the tape attachment head (510).

[0066] At this time, the position of the tape attachment head (510) is adjusted through the rotating part (520) according to the first measured position of the tape, and the tape is grasped. After grasping, the position of the tape attachment head (510) is adjusted once more through the rotating part (520) according to the second measured position of the tape.

[0067] That is, by measuring the tape position through the vision sensor (600) and adjusting the tape position through the rotation of the rotating part (520), the tape position can be adjusted more precisely, which has the advantage of preventing tape attachment defects.

[0068] In addition, the vision sensor (600) can also measure the position of the battery cell to which the tape is attached.

[0069] Such a vision sensor (600) may be, for example, a vision camera, and is not limited to any sensor capable of measuring the position of the tape and the position of the battery cell.

[0070] Next, the position alignment part (700) aligns the position of the battery cell before attaching the tape, and is positioned spaced apart in the width direction (X-axis direction) of the tape attachment part (500).

[0071] The position alignment part (700) is formed in a rod shape extending in the longitudinal direction (Y-axis direction) and aligns the battery cell by applying pressure and contact to the side of the battery cell.

[0072] The tape pressing part (800) presses the tape attached to the battery cell by the tape attachment part (500) to prevent defects in the attachment state of the tape.

[0073] At this time, the tape pressing portion (800) may be formed in a shape corresponding to the surface that presses against the battery cell, so as to press the tape more accurately and adhere it to the battery cell.

[0074] FIG. 5 is a flowchart illustrating a battery cell taping method according to a preferred embodiment of the present invention.

[0075] Referring to FIG. 5, the battery cell taping method according to a preferred embodiment of the present invention comprises a first step of extracting a tape from a tape cartridge, a second step of gripping the tape with a tape attachment head of a tape attachment portion, a third step of cutting the gripped tape, a fourth step of measuring the position of the tape through a vision sensor and adjusting the position of the tape, a fifth step of attaching the tape to a battery cell, and a sixth step of applying pressure to the tape attached to the battery cell.

[0076] First, the first step of ejecting the tape from the tape cartridge is to grasp the tape of the tape cartridge through the tape ejection unit and then eject the tape in the longitudinal direction.

[0077] At this time, the length of the tape ejected by the tape ejection unit is measured through a displacement sensor, and when it is measured that the tape has been ejected to a set length, the movement of the gripper moving along the first moving rail of the tape ejection unit is stopped.

[0078] In other words, by measuring the tape extraction length through a displacement sensor and controlling the travel distance of the gripper, the tape can be extracted to a more accurately set length.

[0079] In addition, the tape ejected from the tape cartridge is ejected with the adhesive surface facing upward.

[0080] The second step of gripping the tape on the tape attachment head of the tape attachment part is a step of pressing and gripping the tape attachment head against the tape by rotating the rotating part and driving the lifting drive part.

[0081] The tape attachment head is raised via the lifting drive unit to adhere to the lower surface of the tape ejected by the tape ejection unit, and then adsorbed and gripped through the vacuum suction hole of the tape attachment head.

[0082] Here, before attaching the tape attachment head to the tape, an additional step is performed to measure the position of the ejected tape using a vision sensor and adjust the position so that the tape and the tape attachment head are parallel to each other by rotating the rotating part according to the position.

[0083] The third step of cutting the gripped tape is to cut one side of the tape held by the tape attachment head into a tape cutting section.

[0084] At this time, the process of the gripper holding the tape releasing the gripping state can be performed simultaneously.

[0085] Here, in order to prevent the position of the tape from changing due to the adhesive force of the tape when the gripper releases the gripping state, the gripper releases the gripping state while the area near the gripped part is pressed by a pin stopper.

[0086] The fourth step, which involves measuring the position of the tape through a vision sensor and adjusting the position of the tape, is to measure the position of the tape in the gripped state through the vision sensor and to adjust the position of the tape attachment head using the rotating part of the tape attachment part so as to be parallel with the attachment position.

[0087] The fifth step of attaching the tape to the battery cell is to attach the tape held by the tape attachment head to the attachment position of the battery cell by driving the lifting drive unit of the tape attachment part and the second moving rail.

[0088] At this time, prior to the 5th step, in order to prevent defects in the tape attachment state, an additional step of aligning the position of the battery cell by pressing and attaching the position alignment part to the battery cell may be performed.

[0089] The sixth step of applying pressure to the tape attached to the battery cell is a step in which, after the tape attachment head of the tape attachment part attaches the tape to the battery cell, the tape attached to the battery cell is applied to the tape by the tape pressure part.

[0090] At this time, the tape pressure portion is formed with a shape corresponding to the contact surface of the battery cell to be pressured, so that the adhesion force can be improved when pressure is applied.

[0091] In addition, the battery cell taping method of the present invention further includes a step of determining whether there is a defect by measuring the attachment state of the tape after the sixth step.

[0092] The condition of the tape attached to the battery cell is measured using a vision sensor to determine whether the tape is defective.

[0093] Referring to FIG. 6 for a more detailed explanation, one end of the tape (t) attached to the battery cell (C) in the longitudinal direction (Y-axis direction) is divided into points A-1, A-2, and A-3, which are spaced apart by a certain distance in the width direction (X-axis direction).

[0094] In addition, the other end of the tape (t) in the longitudinal direction (Y-axis direction) is divided into points B-1, B-2, and B-3, which are spaced apart by a certain distance in the width direction (X-axis direction).

[0095] Points M1-1 and M1-2 are designated near one end in the longitudinal direction (Y-axis direction) of the tape (t), points M2-1 and M2-2 are designated near the center, and points M3-1 and M3-2 are designated near the other end.

[0096] If the length in the longitudinal direction (Y-axis direction) at any one or more of points A-1, A-2, and A-3 of the tape(t) exceeds a certain range, it is determined to be defective.

[0097] For example, if the length of the tape (t) protruding in the longitudinal direction (Y-axis direction) at one or more of points A-1, A-2, and A-3 is 0.5 mm or more and 3.5 mm or less, it is determined to be normal.

[0098] In addition, if the length in the longitudinal direction (Y-axis direction) at any one or more of points B-1, B-2, and B-3 of the tape (t) deviates from a certain range, it is determined to be defective.

[0099] For example, if the length of the tape (t) protruding in the longitudinal direction (Y-axis direction) at one or more of points B-1, B-2, and B-3 is 0.5 mm or more and 3.5 mm or less, it is determined to be normal.

[0100] Meanwhile, if the length of the tape (t) in the width direction (X-axis direction) deviates from a certain range at any one or more of the points M1-1, M1-2, M2-1, M2-2, M3-1, and M3-2 of the tape (t), it is determined to be defective.

[0101] For example, if the length of the tape (t) protruding in the width direction (X-axis direction) at any one or more of points M1-1, M1-2, M2-1, M2-2, M3-1, and M3-2 is 2mm or more and 5mm or more, it is determined to be normal.

[0102] As specific parts of the present invention have been described in detail above, it is obvious to those skilled in the art that such specific descriptions are merely preferred embodiments and do not limit the scope of the invention, and that various changes and modifications are possible within the scope and spirit of the invention, and that such variations and modifications fall within the scope of the appended claims. Explanation of the symbols

[0103] 100: Cartridge fixing part 200: Tape extraction unit 210: Gripper 220: 1st moving rail 300: Displacement sensor 310: Displacement sensor body 320: Incision 330: Displacement measuring unit 400: Tape cutting section 500: Tape attachment part 510: Tape attachment head 520: Rotating part 530: Elevator drive unit 540: 2nd moving rail 600: Vision sensor 700: Position alignment section 800: Tape pressure section T: Tape cartridge t: tape C: Battery cell

Claims

Claim 1 A battery cell taping device comprising: a cartridge fixing part for fixing a tape cartridge containing a tape; a tape ejection part for ejecting a tape of a certain length from the tape cartridge; a displacement sensor for measuring the ejected length of the tape; a tape cutting part for cutting the ejected tape; a tape attachment part for attaching the tape to a battery cell; and a vision sensor located above the tape attachment part for measuring the position of the tape. Claim 2 A battery cell taping device according to claim 1, comprising a position alignment unit for aligning the position of the battery cell. Claim 3 A battery cell taping device comprising, in the first aspect, a tape pressing part that presses the tape attached to the battery cell. Claim 4 In the second aspect, the tape extraction unit comprises a gripper that grips the tape and a first moving rail that moves the gripper in the direction of tape extraction, forming a battery cell taping device. Claim 5 In paragraph 2, the battery cell taping device comprises a displacement sensor body portion extending in a vertical direction, an incision portion formed by cutting a certain upper area of ​​the displacement sensor body portion, and displacement measuring portions provided at the upper and lower portions, respectively. Claim 6 A battery cell taping device according to claim 2, wherein the tape attachment part comprises a tape attachment head for gripping the tape, a rotating part for rotating the tape attachment head in a horizontal direction, a lifting drive part for moving the tape attachment head in a vertical direction, and a second moving rail for moving the tape attachment head to the attachment position of the tape. Claim 7 A battery cell taping device according to claim 6, wherein the tape attachment head is in the shape of a bar extended to a certain length, and the tape is gripped on the upper surface of the bar shape. Claim 8 A battery cell taping device according to claim 7, wherein one or more vacuum suction holes are formed on the upper surface of the bar shape. Claim 9 A battery cell taping method comprising: a first step of extracting a tape from a tape cartridge; a second step of gripping the tape in a tape attachment head of a tape attachment portion; a third step of cutting the gripped tape; a fourth step of measuring the position of the tape through a vision sensor and adjusting the position of the tape; a fifth step of attaching the tape to a battery cell; and a sixth step of applying pressure to the tape attached to the battery cell. Claim 10 A battery cell taping method according to claim 9, wherein a step of adjusting and aligning the position of the battery cell is performed prior to the above 5th step. Claim 11 A battery cell taping method according to claim 9, wherein in the first step, the tape is ejected by a set length through a displacement sensor. Claim 12 A battery cell taping method according to claim 9, wherein a step of measuring the position of the tape extracted through a vision sensor prior to the second step and adjusting the position of the tape attachment head of the tape attachment portion is further performed. Claim 13 In claim 9, the tape extracted in the first step is a battery cell taping method in which an adhesive surface coated with an adhesive member is located on the upper side. Claim 14 A battery cell taping method according to claim 9, further comprising a step of measuring the attachment status of the tape after the above 6th step to determine whether it is defective.

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