Patent Application
20250038243
The present disclosure relates to a taping device for a stacked electrode assembly and a method for taping a stacked electrode assembly, and specifically, relates to, in a taping process for a stacked electrode assembly, a taping device and method for a stacked electrode assembly guiding movement of a tape, and pressurizing and rolling the tape to adhere to the stacked electrode assembly.
Secondary batteries also attract attention as power sources of electric vehicles (EV), hybrid electric vehicles (HEV), parallel hybrid electric vehicles (PHEV), and the like, which are proposed as a solution to air pollution from existing gasoline and diesel vehicles using fossil fuels, where in medium to large-sized devices such as automobiles, medium to large-sized battery modules electrically connecting multiple battery cells are used due to the need for high output and large capacity.
However, since it is desirable for medium to large-sized battery modules to be manufactured as small and light as possible, rectangular batteries, pouch-type batteries, and the like that can be packed with a high integration degree and are light in comparison to capacity are mainly used as battery cells for medium to large-sized battery modules.
The electrode assembly is accommodated in a case of the battery cell, which is generally classified according to whether the electrode assembly of the positive electrode/separator/negative electrode structure forms any structure.
Representatively, it can be classified into a jelly-roll (wound type) electrode assembly composed of a structure winding long sheet-shaped positive electrodes and negative electrodes in a state where separators are interposed therebetween, a stacked (laminated type) electrode assembly in which a plurality of positive electrodes and negative electrodes cut in units with a predetermined size are sequentially laminated in a state where separators are interposed therebetween, and a stacked/folded electrode assembly.
The stacked electrode assembly has a structure in which a plurality of electrodes and a plurality of separators are alternately laminated.
In the case of such a stacked electrode assembly, the stacked electrode assembly is manufactured by repeatedly performing a step of laminating the separator, wherein the separator is usually manufactured to have wider horizontal and vertical widths than those of the electrode, on a magazine or jig having a width corresponding to the horizontal or vertical width of the separator, and laminating the electrode thereon.
Unlike the stacked/folded electrode assembly, the relative position between the electrode and the separator is not fixed, so that a method of covering the side of the electrode assembly using a tape is generally used to fix the relative position between the respective layers.
Referring to
The upper oval mechanism part (13a) presses and fixes the tape (2) to the upper surface of the stacked electrode assembly (1) while pushing the upper end of the tape toward the upper surface of the stacked electrode assembly (1). The lower oval mechanism part (13b) presses and fixes the tape (2) to the lower surface of the stacked electrode assembly (1) while pushing the lower end of the tape (2) to the lower surface of the stacked electrode assembly (1).
However, in a state where the tape (2) is not properly adsorbed to the vacuum adsorption part (12a, 12b), when the upper oval mechanism part (13a) and the lower oval mechanism part (13b) push the tape (2) toward the stacked electrode assembly (1), there may be a phenomenon that the tape (2) is separated from the stacked electrode assembly (2), or the tape (2) wrinkles even if it is taped to the stacked electrode assembly.
Therefore, conventionally, in the process of attaching the tape (2) to the stacked electrode assembly (1), there was a problem that the separator was folded, or the appearance defects of the battery cell occurred due to tape wrinkles and bubble generation, and the like. Particularly, problems such as folding of the separator can be caused in the future in the stacked electrode assembly (1) that is not accurately fixed with tape.
Accordingly, there is a need for a taping device and method that can effectively fix the stacked electrode assembly (1).
The present disclosure is intended to solve problems with conventional taping devices.
Through one example of the present invention, it is intended to provide a taping device and a taping method for a stacked electrode assembly, in a taping process for a stacked electrode assembly, guiding movement of a tape, and pressurizing and rolling the tape to adhere to the stacked electrode assembly.
Through one example of the present invention, it is intended to provide a taping device and a taping method for a stacked electrode assembly capable of preventing a tape from being separated from a device main body, as a gripper part holds the upper and lower ends of the tape and guides movement of the tape while moving forward toward the stacked electrode assembly.
Through one example of the present invention, it is intended to provide a taping device and a taping method for a stacked electrode assembly capable of preventing wrinkles of a tape and bubble generation when the tape is taped to the stacked electrode assembly, as a pair of pressing members pressurizes and rolls the tape while moving forward toward the stacked electrode assembly to attach to the stacked electrode assembly.
Through one example of the present invention, it is intended to provide a taping device and a taping method for a stacked electrode body capable of improving taping quality by performing taping after tensioning a tape.
Through one example of the present invention, it is intended to provide a taping device and a taping method for a stacked electrode assembly capable of effectively fixing a tape to the attachment position where the tape is stretched, and then effectively guiding the position of the tape for taping by effectively releasing the fixation of the tape.
In order to achieve the above-described object, according to one example of the present invention, a taping device for a stacked electrode assembly can be provided, which comprises a support part provided to correspond to the central portion of the tape to be attached to the stacked electrode assembly and the lateral side of the stacked electrode assembly; a vacuum adsorption part adsorbing and fixing the non-pressure-sensitive adhesive side of the tape; a gripper part further fixing the tape by operating to grip the end of the tape; and a taping mechanism part provided to attach the tape to the upper surface and the lower surface of the stacked electrode assembly by moving along the upper surface and the lower surface of the stacked electrode assembly from the upper portion and the lower portion of the support part.
Here, the support part may be referred to as a support device, the gripper part may be referred to as a gripper device, and the taping mechanism part may be referred to as a taping device.
It is preferable that in the initial position of the tape before taping, the support surface supporting the tape in the support part and the vacuum adsorption surface of the vacuum adsorption part form the same plane. The tape before taping may be positioned to have the same vertical plane in a strip shape.
At this time, one side of the tape, which is a pressure-sensitive adhesive side, may be positioned to face the stacked electrode assembly, and the other side, which is a non-pressure-sensitive adhesive side, may be positioned to face the taping device.
In the initial position of the tape before taping, the lateral side of the stacked electrode assembly may be positioned to contact the support surface with the tape interposed therebetween.
In the initial position of the tape before taping, the lateral side of the stacked electrode assembly may be positioned at a certain gap from the tape. This certain gap is closed during the taping process, whereby the central portion of the tape may be attached to the lateral side of the stacked electrode assembly.
It is preferable that the vacuum adsorption part and the gripper part are provided in pairs symmetrically up and down with respect to the support part.
It is preferable that the support part and the vacuum adsorption part are integrally formed in an E shape, and the gripper part and the taping mechanism part are provided to be movable back and forth with respect to the support part and the vacuum adsorption part.
It is preferable that the gripper part is provided to tension the tape as it advances from the initial position of the tape before taping to move to an attachment position for taping. Then, it is preferable that at least a part of the taping is performed in a tensioned state.
It is preferable that the gripper part deforms the upper portion and the lower portion of the tape from a vertical shape to an oblique line shape with respect to the support part while moving to the attachment position. Because the tape is positioned in the oblique line shape, the position of the tape for taping may be guided. That is, the fixation to the end of the tape is released in an oblique line position rather than a vertical position, so that it is possible to effectively prevent the tape from being folded upon taping.
It is preferable that the gripper part comprises a gripper surface on which the end of the tape is seated, and a gripper bar provided to be foldable with respect to the gripper surface, thereby fixing and unfixing the end of the tape.
Since the tape is fixed while the front and back sides of the tape are pressed through the gripper bar, the tape may be effectively fixed even if a force pulling the tape in the longitudinal direction acts thereon. This means that the tape can be effectively fixed in conjunction with the vacuum adsorption part fixing the tape by adsorbing it in the thickness direction of the tape. In other words, this is because it is not easy to fix the tape while overcoming the force pulling the tape in the longitudinal direction through the vacuum adsorption part.
The gripper part may comprise a guide bar provided to be movable back and forth on the vacuum adsorption part.
It is preferable that the gripper part releases the fixed end of the tape after moving to the attachment position. Of course, the fixation of the tape can be released through the vacuum adsorption part just before the tape is moved to the attachment position or after the fixation of the tape is completed through the gripper part.
The taping mechanism part may comprise a moving block provided to move back and forth with respect to the support part; and a pressurizing member provided so that the tape is pressurized while moving back and forth by the moving block, and simultaneously attached to the stacked electrode assembly.
The taping mechanism part may comprise a support bar interposed between the moving block and the pressurizing member, where the pressurizing member may be a roller rotatably provided on the support bar.
It is preferable that the roller is elastically supported to be rotatable with respect to the support bar, and the roller performs the taping while pressurizing and rolling the surface of the stacked electrode body by an elastic restoring force.
Since the taping is performed by pressurizing and rolling, it is possible to significantly reduce the matter in which the tape is folded and attached, or the matter of performing the taping in a state where air is interposed. Particularly, as the pressurizing and rolling are performed by the elastic restoring force, the taping may be performed so that the pressure-sensitive adhesive force is sufficiently generated.
In order to achieve the above-described object, according to one example of the present invention, a taping device for a stacked electrode assembly may be provided, which comprises: a support part provided to correspond to the central portion of the tape to be attached to the stacked electrode assembly and the lateral side of the stacked electrode assembly; a vacuum adsorption part adsorbing and fixing the non-pressure-sensitive adhesive side of the tape; a gripper part provided so that the tape is fixed by operating to grip the end of the tape, and the tape is tensioned by moving from an initial position to an attachment position for attachment of the tape; and a taping mechanism part provided to attach the tape to the upper surface and the lower surface of the stacked electrode assembly by moving along the upper surface and the lower surface of the stacked electrode assembly from the upper portion and the lower portion of the support part.
The gripper part may be provided in a pair to be symmetrical up and down with respect to the support part, and may be provided to additionally fix the upper and lower ends of the tape together with the fixation by the vacuum adsorption part.
The vacuum adsorption part may be provided for primary fixation of the tape, and the gripper part may be provided for secondary fixation of the tape. When the fixation of the tape through the gripper is completed, the fixation of the tape may be released through the vacuum adsorption part.
The gripper part may be moved to the attachment position for taping, where the central portion of the tape may be attached to the lateral side of the stacked electrode assembly. As the taping of the upper and lower surfaces of the stacked electrode assembly begins through the taping mechanism part, the fixation of the tape through the gripper may be released.
It is preferable that the gripper part comprises a gripper bar provided to fix the tape by gripping it by folding.
When the gripper part moves from the initial position to the attachment position, the adsorption of the vacuum adsorption part may be released.
It is preferable that when attachment of the tape through the taping mechanism part begins after the gripper part is moved to the attachment position, the fixation of the tape through the gripper part is released.
It is preferable that the gripper part deforms the tape to be tensioned in an oblique line shape having an acute angle with respect to the upper and lower surfaces of the stacked electrode assembly as it moves to the attachment position.
It is preferable that the taping mechanism part comprises a pressurizing member provided to attach the tape to the stacked electrode assembly by rolling and pressurizing as it moves from the initial position to the attachment position.
Through one example of the present invention, it is possible to provide a taping device and a taping method for a stacked electrode assembly, in a taping process for a stacked electrode assembly, guiding movement of a tape, and pressurizing and rolling the tape to adhere to the stacked electrode assembly.
Through one example of the present invention, it is possible to provide a taping device and a taping method for a stacked electrode assembly capable of preventing a tape from being separated from a device main body, as a gripper part holds the upper and lower ends of the tape and guides movement of the tape while moving forward toward the stacked electrode assembly.
Through one example of the present invention, it is possible to provide a taping device and a taping method for a stacked electrode assembly capable of preventing wrinkles of a tape and bubble generation when the tape is taped to the stacked electrode assembly, as a pair of pressing members pressurizes and rolls the tape while moving forward toward the stacked electrode assembly to attach to the stacked electrode assembly.
Through one example of the present invention, it is possible to provide a taping device and a taping method for a stacked electrode body capable of improving taping quality by performing taping after tensioning a tape.
Through one example of the present invention, it is possible to provide a taping device and a taping method for a stacked electrode assembly capable of effectively fixing a tape to the attachment position where the tape is stretched, and then effectively guiding the position of the tape for taping by effectively releasing the fixation of the tape.
The present invention can make various changes and can have various examples, whereby specific examples will be illustrated and described in the drawings.
However, these are not intended to limit the present application to specific embodiments, and it should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present application. In describing the present application, if it is determined that detailed descriptions of related known technologies may obscure the gist of the present application, the detailed descriptions will be omitted.
The terms such as first or second can be used to describe various components, but the components should not be limited by the terms. The terms are used only to distinguish one component from another.
The terms used in the present application are only used to describe specific examples, which are not intended to limit the present application. Singular expressions include plural expressions unless the context clearly dictates otherwise.
In the present application, it must be understood that the terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but do not exclude in advance the presence or addition possibility of one or more other features, or numbers, steps, operations, components, parts, or combinations thereof.
Therefore, the constitutions shown in examples described in this specification are only the most preferred one example of the present application, and do not represent the entire technical idea of the present application, so that there may be various equivalents and variations which can substitute them at the time of filing the present application.
Also, in the present application, the attached drawings should be understood as being illustrated enlarged or reduced for convenience of explanation.
Hereinafter, with reference to the accompanying drawings, a taping device for a stacked electrode assembly and a method for taping a stacked electrode assembly according to a preferred example of the present invention will be described.
However, the attached drawings are illustrative, and the scope of the taping device for the stacked electrode assembly and the method for taping the stacked electrode assembly of the present application are not limited by the attached drawings.
Referring to
The support part (110) supports the lateral side of the stacked electrode assembly (1). The support part (110) is provided with a support surface (111) that contacts the lateral side of the stacked electrode assembly (1). The support surface (111) supports a support region (A1) of the tape (T) to be attached to the stacked electrode assembly (1) (see
In the present example, for convenience of explanation, the position on the same virtual plane as the support surface (111) will be referred to as an “initial position (P1)” (see
The vacuum adsorption part (120) is provided with a vacuum adsorption surface provided on the same virtual plane as the support surface (111) to adsorb a non-pressure-sensitive adhesive side (T1) of the tape. In the present example, for convenience of explanation, the vacuum adsorption surface will be referred to separately as a first vacuum adsorption surface (121b) and a second vacuum adsorption surface (122b).
The first vacuum adsorption surface (121b) and the second vacuum adsorption surface (122b) are located on the same virtual plane as the support surface (111). The first vacuum adsorption surface (121b) and the second vacuum adsorption surface (122b) are disposed to be spaced apart up and down with the support part (110) interposed therebetween. The structure of the vacuum adsorption part (120) will be described below.
The taping mechanism part (130) may be movably coupled to the support part (110) or the vacuum adsorption part (120). Specifically, the taping mechanism part (130) may be provided to move linearly. As shown in
At the initial position (P1), the tape (T) is positioned so that the non-pressure-sensitive adhesive side (T1) of the tape contacts the support surface (111) and the vacuum adsorption surface (121b, 122b), and the stacked electrode assembly (1) is positioned to contact the support surface (111) with the tape (T) interposed therebetween.
The taping mechanism part (130) pressurizes the non-pressure-sensitive adhesive side (T1) between the support region (A1) and the end while moving toward the stacked electrode assembly (1) by contacting the non-pressure-sensitive adhesive side (T1) of the tape, thereby being provided so that the pressure-sensitive adhesive side (T2) of the tape is attached to the stacked electrode assembly (1). The structure of the taping mechanism part (130) will be described below.
Here, the end of the tape collectively refers to the upper end (T3) and lower end (T4) of the tape which are not adsorbed on the first vacuum adsorption surface (121b) and the second vacuum adsorption surface (122b). Referring to
The gripper part (140) guides movement of the tape (T) upon operation of the taping mechanism part (130), while holding the upper end (T3) of the tape that is not adsorbed to the first vacuum adsorption surface (121b) and the lower end (T4) of the tape that is not adsorbed to the second vacuum adsorption surface (122b), respectively, to move forward (F1) toward the electrode assembly (1).
The gripper part (140) guides movement of the tape (T) upon operation of the taping mechanism part (130), while holding the upper end (T3) and the lower end (T4) of the tape at the initial position (P1), respectively, and moving from the initial position (P1) to the attachment position (P2), releases the upper end (T3) and the lower end (T4) of the tape at the attachment position (P2), and then is operated to return to the initial position (P1).
The gripper part (140) comprises a first gripper part (141) and a second gripper part (145). In the initial position (P1), the gripper part (140) has a first grip surface (142b) in contact with the upper end (T3) of the tape, and a second grip surface (146b), which are positioned in the same virtual plane as the support surface (111). That is, the tape before taping may be positioned and fixed in a single plane shape.
Referring to
The first gripper part (141) comprises a first guide bar (142), a first gripper bar (143), and a first grip driving part (144).
The first guide bar (142) is coupled to a first vacuum adsorption body (121) to be movable back and forth. The first guide bar (142) may be provided with a first guide rail (142a) in a direction parallel to the support part (110).
The first gripper bar (143) is rotatably coupled to one end of the first guide bar (142) on which the first grip surface (142b) of the first guide bar (142) is provided. The first gripper bar (143) contacts the first grip surface (142b) with the tape (T) interposed therebetween, while rotating toward the first grip surface (142b), thereby operating to grip the upper end (T3) of the tape. The first gripper bar (143) operates to release the upper end (T3) of the tape while rotating to be away from the first grip surface (142b).
The first grip driving part (144) is coupled to the other end of the first guide bar (142) to provide the first guide bar (142) with a driving force, thereby moving the first guide bar (142) back and forth. The first grip driving part (144) provides the first guide bar (142) with a driving force to adjust the position of the first guide bar (142). A linear motor may be used as the first grip driving part (144).
Referring to
The second gripper part (145) comprises a second guide bar (146), a second gripper bar (147), and a second grip driving part (148).
The second guide bar (146) is coupled to a second vacuum adsorption body (122) to be movable back and forth. The second guide bar (146) is provided with a second guide rail (146a) in a direction parallel to the support part (110).
The second gripper bar (147) is rotatably coupled to one end of the second guide bar (146) on which the second grip surface (146b) of the second guide bar (146) is provided. The second gripper bar (147) contacts the second grip surface (146b) with the tape (T) interposed therebetween, while rotating toward the second grip surface (146b), thereby operating to grip the lower end (T4) of the tape. The second gripper bar (147) operates to separate from the lower end (T4) of the tape while rotating to be away from the second grip surface (146b).
The second grip driving part (148) is coupled to the other end of the second guide bar (146). The second grip driving part (148) is a device which provides the second guide bar (146) with a driving force to move the second guide bar (146) back and forth. The second grip driving part (148) provides the second guide bar (146) with a driving force to adjust the position of the second guide bar (146). A linear motor may be used as the second grip driving part (148).
As described above, the first gripper part (141) and the second gripper part (141) may be provided to be symmetrical up and down with respect to the support part (110). Then, it is preferable that the linear movement of the first gripper part (141) and the second gripper part (145) is performed integrally. Therefore, the driving parts (144, 148) for linear movement of the first gripper part (141) and the second gripper part (141) may also be configured as a single driving part.
Referring to
The first vacuum adsorption body (121) is disposed at the top of the support part (110). The first vacuum adsorption body (121) has an L-shaped structure. The first vacuum adsorption body (121) has a structure in which the first vacuum adsorption surface (121b) is bent upward with respect to a first opposing surface (121a). The first vacuum adsorption body (121) is coupled to the support part (110) so that the first opposing surface (121a) is spaced apart from the upper surface of the support part (110). Therefore, the support part (110) and the vacuum adsorption part (120) have an E-shaped structure, and the first vacuum adsorption body (121) and the second vacuum adsorption main body (122) are provided to be symmetrical up and down at the top and bottom of the support part (110), respectively.
Then, the first vacuum adsorption surface (121b) is formed by bending upward from the end of the first vacuum adsorption body (121), and the second vacuum adsorption surface (122b) is formed by bending downward from the end of the first vacuum adsorption body (122).
Here, the first opposing surface (121a) is a surface facing the upper surface of the support part (110). The first vacuum adsorption surface (121b) is a surface provided coaxially with the support surface (111) of the support part (110). The first vacuum adsorption surface (121b) is a portion where the non-pressure-sensitive adhesive side (T1) of the tape is adsorbed.
The first vacuum adsorption body (121) is provided with a first coupling surface (121c) that is parallel to the first opposing surface (121a), but is bent toward the top of the first vacuum adsorption surface (121b).
A plurality of first guide balls (121e) are rotatably installed on the first coupling surface (121c). The plurality of first guide balls (121e) are inserted into the first guide rail (142a) of the first gripper part (141) to guide back-and-forth movement of the first gripper part (141).
A first nozzle (123a) is built into the first vacuum adsorption body (121). The first nozzle (123a) provides the first vacuum adsorption surface (121b) with a vacuum pressure. The first nozzle (123a) is connected to a vacuum pressure applying member (124) through a pipe (123c).
Referring to
The second vacuum adsorption body (122) has an L-shaped structure. The second vacuum adsorption body (122) has a structure in which the second vacuum adsorption surface (122b) is bent downward with respect to a second opposing surface (122a). The second vacuum adsorption body (122) is coupled to the support part (110) so that the second opposing surface (122a) is spaced apart from the lower surface of the support part (110).
Here, the second opposing surface (122a) is a surface facing the lower surface of the support part (110). The second vacuum adsorption surface (122b) is a surface provided coaxially with the support surface (111) of the support part (110). The second vacuum adsorption surface (122b) is a portion where the non-pressure-sensitive adhesive side (T1) of the tape is adsorbed.
The second vacuum adsorption body (122) is provided with a second coupling surface (122c) that is parallel to the second opposing surface (122a), but is bent toward the lower part of the second vacuum adsorption surface (122b).
A plurality of second guide balls (122e) are rotatably installed on the second coupling surface (122c). The plurality of second guide balls (122e) are inserted into a second guide rail (146a) of the second gripper part (145) to guide back-and-forth movement of the second gripper part (145).
A second nozzle (123b) is built into the second vacuum adsorption body (122). The second nozzle (123b) provides the second vacuum adsorption surface (122b) with a vacuum pressure. The second nozzle (123b) is connected to the vacuum pressure applying member (124) through the pipe (123c).
The taping mechanism part (130) pressurizes and rolls the tape (T) on the upper and lower surfaces of the stacked electrode assembly (1) while moving forward toward the stacked electrode assembly (1) in an arrow F1 direction. The taping mechanism part (130) comprises a first taping mechanism part (131) and a second taping mechanism part (135).
Referring to
Here, the support part (110), and the first vacuum adsorption body (121) and the second vacuum adsorption body (122) are fixed structures, where these structures may be formed as a single body. That is, the first taping mechanism part (131) and the second taping mechanism part (135) may be installed to be movable back and forth with respect to the support part (110), and the first vacuum adsorption body (121) and the second vacuum adsorption body (122).
The first taping mechanism part (131) pressurizes and rolls the tape (T) on the upper surface of the stacked electrode assembly (1) while moving in the movement direction of the first gripper part (141).
The first taping mechanism part (131) comprises a first moving block (132), a first pressurizing member (133), and a first block driving member (134).
The first moving block (132) is coupled to the first vacuum adsorption body (121) to be movable back and forth. The first moving block (132) comprises a first block case (132a) and at least one first block ball (132b).
A first support bar (133a) supporting the first pressing member (133) is coupled to the first block case (132a). The first block case (132a) is provided with a first through opening (reference numeral not indicated) penetrating the first vacuum adsorption body (121).
At least one first block ball (132b) is exposed to the first through opening, but is rotatably installed in the first block case (132a). At least one first block ball (132b) is connected to a first body rail (121d) of the first vacuum adsorption body (121) to guide movement of the first block case (132a). Here, the first body rail (121d) is provided on one side of the first vacuum adsorption body (121) in parallel with the support part (110).
The first block driving member (134) is coupled to the first moving block (132) to provide the first moving block (132) with a driving force. By the first block driving member (134), the first moving block (132) may be moved forward toward the stacked electrode assembly (1) in the arrow F1 direction (forward direction), or may be moved backward away from the electrode assembly (1) in the arrow F2 direction (backward direction).
The first pressurizing member (133) is coupled to the first moving block (132). The first pressurizing member (133) is disposed between the upper surface of the support part (110) and the first opposing surface (121a) of the first vacuum adsorption body (121). The first pressurizing member (133) may be either a pressurizing block or roller having a curved surface bent with a predetermined curvature.
The first pressurizing member (133) may pressurize and roll the tape (T), which is held by the first gripper part (141) to be moved to the top of the stacked electrode assembly (1), on the upper surface of the stacked electrode assembly (1), while being moved forward by the first moving block (132) in the arrow F1 direction.
Referring to
The second taping mechanism part (135) comprises a second moving block (136), a second pressurizing member (137), and a second block driving member (138).
The second moving block (136) is coupled to the second vacuum adsorption body (122) to be movable back and forth. The second moving block (136) comprises a second block case (136a), and at least one second block ball (136b).
A second support bar (137a) supporting the second pressurizing member (137) is coupled to the second block case (136a). The second block case (136a) is provided with a second through opening penetrating the second vacuum adsorption body (122).
At least one second block ball (136b) is exposed through a second through opening (reference numeral not indicated), but is rotatably installed in the second block case (136a). At least one second block ball (136b) is connected to a second body rail (122d) of the second vacuum adsorption body (122) to guide movement of the second block case (136a). Here, the second body rail (122d) is provided on one side of the second vacuum adsorption body (122) in parallel with the support part (110).
The second block driving member (138) is coupled to the second moving block (136) to provide the second moving block (136) with a driving force. By the second block driving member (138), the second moving block (136) may be moved forward toward the stacked electrode assembly (1) in the arrow F1 direction, or may be moved backward away from the stacked electrode assembly (1) in the arrow F2 direction.
The second pressurizing member (137) is coupled to the second moving block (136). The second pressurizing member (137) is disposed between the lower surface of the support part (110) and the second opposing surface (122a) of the second vacuum adsorption body (122). The second pressurizing member (137) may be either a pressurizing block or roller having a curved surface bent with a predetermined curvature.
The second pressurizing member (137) pressurizes and rolls the tape (T), which is held by the second gripper part (145) to be moved to the bottom of the stacked electrode assembly (1), on the lower surface of the stacked electrode assembly (1), while being moved forward by the second moving block (136) in the arrow F1 direction.
The first pressurizing member (133) and the second pressurizing member (137) are preferably installed spaced apart within a range without damaging the stacked electrode assembly (1) upon pressurizing and rolling the stacked electrode assembly (1). The gap between the first pressurizing member (133) and the second pressurizing member (137) is within the thickness range of the stacked electrode assembly (1). Depending on the standard of the stacked electrode assembly (1), the installation interval between the first pressurizing member (133) and the second pressurizing member (137) may be adjusted.
Meanwhile, the first pressurizing member (133) and the second pressurizing member (137) attach the tape to the upper and lower surfaces of the stacked electrode assembly (1) while rolling, which may be provided to roll along the upper and lower surfaces of the stacked electrode assembly (1) while pressurizing. That is, the first pressurizing member (133) and the second pressurizing member (137) move forward along the upper and lower surfaces of the stacked electrode assembly (1) and simultaneously roll. In this instance, the first pressurizing member (133) and the second pressurizing member (137) are elastically supported, thereby pressurizing the upper and lower surfaces of the stacked electrode assembly (1) by an elastic force.
That is, the initial gap between the first pressurizing member (133) and the second pressurizing member (137) is smaller than the thickness of the stacked electrode assembly (1), and as the taping is performed, the gap may be increased by the elastic force, so that the first pressurizing member (133) and the second pressurizing member (137) pressurize the stacked electrode assembly (1) up and down. Through this, it is possible to effectively perform the taping from start to finish.
Hereinafter, with reference to
As shown in
When the vacuum pressure is applied from the vacuum adsorption part (120) to the first nozzle (123a) and the second nozzle (123b), the non-pressure-sensitive adhesive side (T1) of the tape is adsorbed on the first vacuum adsorption surface and the second vacuum adsorption surface of the vacuum adsorption part (120). In this instance, the first gripper bar (143) and the second gripper bar (147) are in an unfolded state.
Referring to
The second gripper bar (147) rotates toward the second grip surface (146b) of the second guide bar (146). The second gripper bar (147) contacts the second grip surface (146b) with the tape (T) interposed therebetween to grip the lower end of the tape (T).
The first gripper bar (143) and the second gripper bar (147) grip the upper and lower ends of the tape (T) adsorbed on the vacuum adsorption part (120) while operating simultaneously.
Therefore, on the upper and lower ends of the tape (T), the fixation by vacuum adsorption and the fixation by the gripper bars (143, 147) are performed. At this time, even if a problem occurs in the vacuum adsorption, the fixation of the tape by the gripper bars is performed, so that effective and stable attachment of the tape can be performed.
Referring to
The lateral side of the stacked electrode assembly (1) contacts with the support surface (111) with the tape (T) interposed therebetween. At this time, the central portion of the tape (T) may be in a state fixed to the lateral side of the stacked electrode assembly (1) by the support part (110).
The stacked electrode assembly (1) may be transferred by a rail, belt, or linear moving device in a state of being supported on a pallet to be disposed in contact with the support part (110). Of course, a certain gap may be formed between the lateral side of the stacked electrode assembly (1) and the tape (T). This is to ensure that the electrode assembly (1) is transferred in a direction to intersect the taping device (100). Such a certain gap can be filled in a process that the taping is performed. Then, in the taping process, the electrode assembly (1) can be fixed so that it does not move back and forth with respect to the taping device (100).
Referring to
As a pair of gripper parts (140) hold the upper and lower ends of the tape (T) to guide the movement of the tape (T) while moving forward toward the stacked electrode assembly (1) in the arrow F1 direction, an embodiment of the present invention can prevent the tape (T) from being separated from the stacked electrode assembly (1), even if the vacuum is released from the vacuum adsorption part (120) so that the tape (T) is separated from the vacuum adsorption part (120). Then, as both ends of the tape (T) are moved forward, the tape (T) is tensioned. Therefore, the tape (T) is then attached in an overall tensioned state, so that it is possible to effectively prevent problems such as the tape (T) being folded and attached, air intervening on the adhesive surface, and the tape wrinkling.
Referring to
In this instance, the first pressurizing member (133) pressurizes and rolls the tape (T) on the upper surface of the stacked electrode assembly (1), while being moved forward by the first moving block (132) in the arrow F1 direction, and simultaneously pushing the non-pressure-sensitive adhesive side (T1) of the tape from the initial position (P1) to the attachment position (P2). Accordingly, the pressure-sensitive adhesive side (T2) of the tape is adhered to the upper surface of the stacked electrode assembly (1).
The second moving block (136) moves forward along the second body rail (122d) of the second vacuum adsorption body (122) in the arrow F1 direction. At this time, the second pressurizing member (137) pressurizes and rolls the tape (T) on the lower surface of the stacked electrode assembly (1), while being moved forward by the second moving block (136), and simultaneously pushing the non-pressure-sensitive adhesive side (T1) of the tape from the initial position (P1) to the attachment position (P2). Accordingly, the pressure-sensitive adhesive side (T2) of the tape is adhered to the lower surface of the stacked electrode assembly (1).
Meanwhile, the tape (T) may have a strip shape where the top and bottom lengths are longer than the width. A plurality of such tapes (T) may be taped at intervals in the longitudinal direction of the stacked electrode assembly (1). That is, a plurality of devices taping one stacked electrode assembly (1) may be provided in the longitudinal direction of the electrode assembly (1).
The pallet supporting and simultaneously transferring the electrode assembly (1) may support the electrode assembly (1) in a fork shape. Therefore, the taping may be performed on the side where the electrode assembly (1) is not supported. That is, the overall cross-section of the taping device may be the same as the strip-shaped tape (T), and its width may preferably be smaller than the gap between the electrode assemblies (1) that are not supported on the pallet.
Referring to
According to one example of the present invention, in the taping process of the stacked electrode assembly, the gripper part grips the upper and lower ends of the tape to guide the movement of the tape while moving forward toward the stacked electrode assembly, so that even if the vacuum is released in the vacuum adsorption part, and thus the tape is separated from the vacuum adsorption part, it is possible to prevent the tape from being separated from the stacked electrode assembly.
According to one example of the present invention, a pair of pressurizing members pressurizes and rolls the tape while moving forward toward the stacked electrode assembly, and simultaneously attaches to the stacked electrode assembly, so that it is possible to increase the adhesive strength of the tape to the stacked electrode assembly.
According to one example of the present invention, the gripper part guides the movement of the tape, and a pair of pressurizing members pressurizes and rolls the tape onto the stacked electrode assembly, it is possible to prevent wrinkles and bubble generation of the tape conventionally generated when the tape has been attached to the stacked electrode assembly.
It is described in the detailed description.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2022-0106147 | Aug 2022 | KR | national |
The present application is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/KR2023/012068, filed on Aug. 16, 2023, which claims priority from Korean Patent Application No. 10-2022-0106147, filed on Aug. 24, 2022, all of which are incorporated herein by reference.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2023/012068 | 8/16/2023 | WO |
