Taping apparatus and method for secondary battery

Abstract

A taping device for a secondary battery according to one embodiment of the present invention may include a secondary battery cell comprising an electrode assembly and a cell body member comprising a receiving portion in which the electrode assembly is received and a sealing portion that seals the edge of the receiving portion and folds in the direction of the receiving portion, so that an adhesive member provided as a single sheet by cutting may be attached to the cell body member, a supporting unit that supports a part of the adhesive member and a roller unit that moves continuously in at least one direction among the receiving portion and the sealing portion and attaches the adhesive member supported by the supporting unit to the cell body member.

Description

Technology Field

[0001] The present invention relates to a taping device and a taping method for a secondary battery. Background Technology

[0002] With the increasing technological development and demand for mobile devices and electric vehicles, the demand for secondary battery cells as an energy source is rapidly rising. A secondary battery cell is a battery capable of repeated charging and discharging because the interconversion between chemical and electrical energy is reversible.

[0003] Such a secondary battery cell includes an electrode assembly, which is a major component of the secondary battery such as a positive electrode, a negative electrode, a separator, and an electrolyte, and a cell body member consisting of a multilayer outer material (Laminated Film Case) that protects it.

[0004] Here, the cell body member forms a sealing portion by sealing the edge of the receiving portion in which the electrode assembly is received, and this sealing portion is folded in the direction of the receiving portion.

[0005] However, even if the sealing portion is folded toward the receiving portion, there is a problem in that it does not adhere completely due to spring back.

[0006] To prevent such springback, a method of attaching tape to the secondary battery cell so that the sealing portion adheres to the receiving portion can be considered; however, even in this case, there are additional problems such as the tape not being stably attached to the secondary battery cell or the tape detaching.

[0007] Therefore, in order to improve the aforementioned problems or limitations, research on battery modules became necessary. Prior art literature

[0008] KR 10-2018-0089014 A The problem to be solved

[0009] The present invention aims to provide a taping device and a taping method for a secondary battery that can attach tape to a secondary battery cell to prevent springback.

[0010] In another aspect, the present invention aims to provide a taping device and a taping method for a secondary battery that can stably attach an adhesive member to a secondary battery cell and prevent the problem of the adhesive member detaching. means of solving the problem

[0011] A taping device for a secondary battery according to one embodiment of the present invention comprises an electrode assembly and a receiving portion in which the electrode assembly is received, and a sealing portion that seals the edge of the receiving portion and folds in the direction of the receiving portion, and a cell body member which is a multilayer outer material, so that an adhesive member provided as a single sheet by cutting is attached to the secondary battery cell, the device comprises a support unit that supports a part of the adhesive member and a roller unit that moves continuously in at least one direction among the receiving portion and the sealing portion and attaches the adhesive member supported by the support unit to the outer surface of the cell body member, wherein the support unit includes an adsorption tacking portion that adsorbs the adhesive member and moves it toward the secondary battery cell and attaches a part of the adhesive member to the cell body member; and the adsorption tacking portion may include a tacking head portion provided on one surface in which a discharge terminal connected to ground contacts the adhesive member so as to discharge the electrostatic charge of the adhesive member to ground.

[0012] Here, the roller unit of the taping device for a secondary battery according to one embodiment of the present invention may include a first multi-roller part that moves while pressing the adhesive member in the direction of one side of the receiving part, and a second multi-roller part that moves while pressing the adhesive member in the direction of the other side of the receiving part.

[0013] Alternatively, the roller unit of the taping device for a secondary battery according to one embodiment of the present invention may include a single roller part that moves while adhering the adhesive member, which is attached and supported to one surface of the receiving part by the support unit, in the direction of the sealing part and the direction of the other surface of the receiving part.

[0014] In addition, the support unit of the taping device for a secondary battery according to one embodiment of the present invention may include a full-bonding support member that is spaced apart from the adsorption bonding member by a certain distance and is provided adjacent to the roller unit.

[0015] Here, the temporary bonding head portion of the taping device for a secondary battery according to one embodiment of the present invention may include a negative pressure channel formed on one surface that contacts the adhesive member and connected to an external negative pressure forming portion, and the adsorption temporary bonding portion may include a temporary bonding cylinder portion that is coupled to the temporary bonding head portion and moves the temporary bonding head portion in the direction of the secondary battery cell.

[0016] In addition, the negative pressure channel of the taping device for a secondary battery according to one embodiment of the present invention is formed over the entire surface of the temporary head portion that the adhesive member contacts, and may be formed in a mesh shape or a radial shape.

[0017] In addition, the temporary head portion of the taping device for a secondary battery according to one embodiment of the present invention may have one surface that contacts the adhesive member formed in a flat or concave shape.

[0018] In addition, the temporary sealing cylinder portion of the taping device for a secondary battery according to one embodiment of the present invention can elastically press the temporary sealing head portion in the direction of the secondary battery cell.

[0019] In addition, the full adhesive support portion of the taping device for a secondary battery according to one embodiment of the present invention may include a support head portion that is in close contact with a part of the adhesive member attached to the secondary battery cell by the adsorption adhesive portion, and a support cylinder portion that is coupled to the support head portion and presses the support head portion in the direction of the secondary battery cell.

[0020] In addition, the support cylinder portion of the taping device for a secondary battery according to one embodiment of the present invention can elastically press the support head portion in the direction of the secondary battery cell.

[0021] Here, the support head portion of the taping device for a secondary battery according to one embodiment of the present invention may include a support block formed of urethane material or sponge material.

[0022] In addition, the support head portion of the taping device for a secondary battery according to one embodiment of the present invention may include a support frame coupled to the support cylinder portion and a plurality of support fingers provided on the support frame and elastically pressed outward.

[0023] Alternatively, the support unit of the taping device for a secondary battery according to one embodiment of the present invention may include an adsorption support member that adsorbs the adhesive member and moves it toward the secondary battery cell, and while the roller unit adheres the adhesive member to the secondary battery cell, presses a part of the adhesive member toward the secondary battery cell to support it in a state adhered to the secondary battery cell.

[0024] A taping method for a secondary battery according to another embodiment of the present invention comprises a secondary battery cell including an electrode assembly, a receiving portion in which the electrode assembly is received, and a sealing portion that seals the edge of the receiving portion and folds in the direction of the receiving portion, and a cell body member which is a multilayer outer material, wherein a portion of an adhesive member provided as a sheet by cutting is supported and a suction step is included, and a bonding step is included in which the adhesive member supported in part is bonded to the receiving portion and the sealing portion, and the adhesive member is bonded to the outer surface of the cell body member. The suction step may support the adhesive member with a temporary bonding head portion including a discharge terminal that generates static electricity in the adhesive member.

[0025] Here, the adhesive step of the taping method for a secondary battery according to another embodiment of the present invention may include a multi-adhesion step of adhesively adhering the adhesive member supported in the sealing portion to each of the two sides of the receiving portion.

[0026] Alternatively, the rolling step of the taping method for a secondary battery according to another embodiment of the present invention may include a single adhesive step of sequentially adhesively bonding the adhesive member supported on one side of the receiving portion to the sealing portion and the other side of the receiving portion.

[0027] In addition, the adsorption step of the taping method for a secondary battery according to another embodiment of the present invention adsorbs the adhesive member, and the support step may include a temporary bonding step of moving the adhesive member toward the secondary battery cell to bond a part of the adhesive member to the secondary battery cell, a cell moving step of moving the secondary battery cell to a position where a roller unit performing the bonding step is arranged, and a pressing step of pressing a part of the adhesive member attached to the secondary battery cell toward the secondary battery cell.

[0028] Alternatively, the adsorption step of the taping method for a secondary battery according to another embodiment of the present invention may adsorb the adhesive member, and the support step may include a pressurizing step of moving the adhesive member toward the secondary battery cell to adhere a portion of the adhesive member to the secondary battery cell while simultaneously applying pressure toward the secondary battery cell.

[0029] delete Effects of the invention

[0030] The taping device for a secondary battery according to the present invention has the advantage of being able to attach tape to a secondary battery cell to prevent springback.

[0031] In another aspect, the taping device for a secondary battery according to the present invention has the advantage that the adhesive member is stably attached to the secondary battery cell and can prevent the problem of the adhesive member detaching.

[0032] However, the various and beneficial advantages and effects of the present invention are not limited to those described above and may be more easily understood in the process of explaining specific embodiments of the present invention. Brief explanation of the drawing

[0033] FIG. 1 is a side view illustrating the adsorption bonding portion of a support unit in an embodiment in which the roller unit of the taping device for a secondary battery of the present invention includes a first multi-roller portion and a second multi-roller portion. FIG. 2 is a side view illustrating a fully connected support portion of a support unit in an embodiment in which the roller unit of the taping device for a secondary battery of the present invention includes a first multi-roller portion and a second multi-roller portion. FIG. 3 is a plan view illustrating a support unit in an embodiment in which the roller unit of the taping device for a secondary battery of the present invention includes a first multi-roller section and a second multi-roller section. FIG. 4 is a side view illustrating the adsorption bonding portion of a support unit in an embodiment in which the roller unit of the taping device for a secondary battery of the present invention includes a single roller portion. FIG. 5 is a side view illustrating a fully connected support portion of a support unit in an embodiment in which the roller unit of the taping device for a secondary battery of the present invention includes a single roller portion. FIG. 6 is a side view illustrating an adsorption tacking portion in a taping device for a secondary battery according to the present invention. FIG. 7 is a front view illustrating the tack head portion of the adsorption tack portion in the taping device for a secondary battery of the present invention. FIG. 8 is a side view illustrating various embodiments of one surface in which the tack head portion of the adsorption tack portion of the taping device for a secondary battery of the present invention contacts the adhesive member. FIG. 9 is a side view illustrating a full-contact support portion in a taping device for a secondary battery according to the present invention. FIG. 10 is a side view illustrating an embodiment of a taping device for a secondary battery according to the present invention in which a full-contact support portion includes a plurality of support fingers. FIG. 11 is a plan view illustrating an embodiment in which a support unit in a taping device for a secondary battery according to the present invention includes an adsorption support member. FIG. 12 is a flowchart illustrating a taping method for a secondary battery according to the present invention. Specific details for implementing the invention

[0034] Preferred embodiments of the present invention will be described below with reference to the attached drawings. However, embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. Furthermore, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. In the drawings, the shapes and sizes of elements may be exaggerated for clearer explanation.

[0035] Additionally, singular expressions in this specification include plural expressions unless the context clearly indicates otherwise, and reference numerals assigned in the same or similar manner throughout the specification are deemed to refer to the same component or corresponding component.

[0037] The present invention relates to a taping device (1) and a taping method for a secondary battery, wherein a tape can be attached to a secondary battery cell (2) to prevent springback.

[0039] First, regarding the taping device (1) for a secondary battery of the present invention, the taping device (1) for a secondary battery of the present invention may include a roller unit (200) to attach a tape to a secondary battery cell (2).

[0040] In another aspect, the taping device (1) for a secondary battery of the present invention can stably attach the adhesive member (3) to the secondary battery cell (2) and prevent the problem of the adhesive member (3) detaching. To this end, the taping device (1) for a secondary battery of the present invention may include a support unit (100).

[0041] Here, the adhesive member (3) may be, for example, a tape, and in particular, an insulating tape.

[0042] Additionally, the secondary battery cell (2) may include an electrode assembly and a cell body member that surrounds the electrode assembly. The cell body member may include a receiving portion (2a) in which the electrode assembly is received and a sealing portion (2b) that seals the area around the receiving portion (2a).

[0043] The above electrode assembly is substantially contained within the cell body member and used together with an electrolyte. The electrolyte may contain a lithium salt such as LiPF6, LiBF4, etc., in an organic solvent such as EC (ethylene carbonate), PC (propylene carbonate), DEC (diethyl carbonate), EMC (ethyl methyl carbonate), DMC (dimethyl carbonate), etc. Furthermore, the electrolyte may be in a liquid, solid, or gel form.

[0044] In addition, the cell body member is configured to protect the electrode assembly and contain the electrolyte, and for example, the cell body member may be provided as a pouch-type member or a can-type member. Here, the pouch-type member is a form that seals and contains the electrode assembly on three or four sides, and is a member configured to seal by overlapping and joining three sides, excluding one side, which is mainly the bottom side, with the electrode assembly contained inside. In addition, the can-type member is a form that seals and contains the electrode assembly on one side, and is a member configured to seal by overlapping and joining one side, excluding three sides, which are mainly the bottom side and two sides, with the electrode assembly contained inside.

[0045] However, such pouch-type secondary battery cells (2) and can-type secondary battery cells (2) are merely examples of secondary battery cells (2) accommodated in the battery module of the present invention, and the secondary battery cells (2) accommodated in the battery module of the present invention are not limited to these types.

[0047] Specifically, referring to the drawings, the taping device (1) for a secondary battery of the present invention is illustrated in FIGS. 1 to 3 in which the roller unit (200) for taping the adhesive member (3) has two roller parts so as to attach the adhesive member (3) to the secondary battery cell (2), and in FIGS. 4 and 5 in which the roller unit (200) has one roller part.

[0048] That is, FIG. 1 is a side view illustrating the adsorption bonding portion (110) of the support unit (100) in an embodiment in which the roller unit (200) of the taping device (1) for a secondary battery of the present invention includes a first multi-roller portion (211) and a second multi-roller portion (212); FIG. 2 is a side view illustrating the full bonding support portion (120) of the support unit (100) in an embodiment in which the roller unit (200) of the taping device (1) for a secondary battery of the present invention includes a first multi-roller portion (211) and a second multi-roller portion (212); and FIG. 3 is a plan view illustrating the support unit (100) in an embodiment in which the roller unit (200) of the taping device (1) for a secondary battery of the present invention includes a first multi-roller portion (211) and a second multi-roller portion (212).

[0049] And, FIG. 4 is a side view showing the adsorption bonding portion (110) of the support unit (100) in an embodiment in which the roller unit (200) of the taping device (1) for a secondary battery of the present invention includes a single roller portion (220), and FIG. 5 is a side view showing the full bonding support portion (120) of the support unit (100) in an embodiment in which the roller unit (200) of the taping device (1) for a secondary battery of the present invention includes a single roller portion (220).

[0050] Additionally, FIGS. 1 to 5 are embodiments in which a support unit (100) supporting an adhesive member (3) includes an adsorption tacking part (110) and a full bonding support part (120). For reference, an embodiment in which the support unit (100) includes an adsorption support part (130) that simultaneously performs the roles of the adsorption tacking part (110) and the full bonding support part (120) is shown in FIG. 11.

[0052] Referring to the drawings, a taping device (1) for a secondary battery according to one embodiment of the present invention may include a support unit (100) and a roller unit (200) so that an adhesive member (3) provided as a cut sheet is attached to a secondary battery cell (2) which is provided with a receiving portion (2a) in which an electrode assembly is received and a sealing portion (2b) that seals the edge of the receiving portion (2a) and folds in the direction of the receiving portion (2a).

[0053] Here, the support unit (100) can support a portion of the adhesive member (3). The roller unit (200) moves continuously in at least one direction of the receiving portion (2a) and the sealing portion (2b), and can attach the adhesive member (3) supported by the support unit (100) to the secondary battery cell (2). By attaching the adhesive member (3) in this way, the sealing portion (2b) can be closely attached to the receiving portion (2a).

[0054] The above support unit (100) can serve to stably attach the adhesive member (3) to the secondary battery cell (2) and prevent the problem of the adhesive member (3) detaching.

[0055] That is, the support unit (100) supports a part of the adhesive member (3) while allowing a part of the adhesive member (3) to be attached to the secondary battery cell (2), thereby preventing problems such as the adhesive member (3) detaching during the conventional process of attaching the adhesive member (3), and the adhesive member (3) not being stably attached and being attached crookedly.

[0056] To this end, the support unit (100) may include an adsorption bonding part (110) that serves to attach a part of the adhesive member (3) to the secondary battery cell (2), and a full bonding support part (120) that supports a part of the adhesive member (3) to the secondary battery cell (2).

[0057] That is, the support unit (100) of the taping device (1) for a secondary battery according to one embodiment of the present invention may include the adsorption bonding part (110) and the complete bonding support part (120).

[0058] The above adsorption bonding part (110) adsorbs the adhesive member (3) and moves it toward the secondary battery cell (2), and can bond a part of the adhesive member (3) to the secondary battery cell (2). The above full bonding support part (120) is positioned at a certain distance from the adsorption bonding part (110) and can be provided adjacent to the roller unit (200).

[0059] Additionally, the above-mentioned adhesive support member (120) can press and support a portion of the adhesive member (3) attached to the secondary battery cell (2) by the adsorption adhesive member (110) in the direction of the secondary battery cell (2) while the roller unit (200) presses the remaining portion of the adhesive member (3) separated from the secondary battery cell (2) against the secondary battery cell (2).

[0060] That is, when the adhesive member (3) is temporarily attached to the secondary battery cell (2) by the adsorption temporary attachment part (110), the secondary battery cell (2) moves to the position where the full attachment support part (120) is placed, and the adhesive member (3) can be fully attached to the secondary battery cell (2) by the roller unit (200) while being supported by the full attachment support part (120). This can be easily understood by referring to FIG. 3.

[0061] In this way, the adsorption temporary bonding part (110) adsorbs and holds the adhesive member (3) by forming negative pressure, etc., and then attaches a portion of the adhesive member (3) to the secondary battery cell (2). By doing so, the adhesive member (3) can be temporarily bonded to the secondary battery cell (2) before the roller unit (200) completely attaches the adhesive member (3) to the secondary battery cell (2).

[0062] To this end, the above-mentioned adsorption tacking part (110) may include a tacking head part (111) and a tacking cylinder part (112), and a detailed explanation thereof will be given later with reference to FIG. 6.

[0063] And the above-mentioned adhesive support member (120) serves to support the adhesive member (3) while the adhesive member (3) is completely attached to the secondary battery cell (2) by the roller unit (200). That is, while the roller unit (200) attaches the adhesive member (3) to the secondary battery cell (2) in close contact, the above-mentioned adhesive support member (120) acts as a support point, thereby allowing the adhesive member (3) to be attached to the secondary battery cell (2) more stably.

[0064] To this end, the above-mentioned support member (120) may include a support head member (121) and a support cylinder member (122), and a detailed explanation thereof will be given later with reference to FIG. 9.

[0065] Meanwhile, the support unit (100) can simultaneously perform the role of temporarily attaching the adhesive member (3) to the secondary battery cell (2) and the role of supporting the adhesive member (3) while the roller unit (200) completely attaches the adhesive member (3) to the secondary battery cell (2), and a detailed explanation thereof will be provided later with reference to FIG. 11.

[0067] The roller unit (200) serves to completely attach the adhesive member (3), which is supported in the secondary battery cell (2) by the support unit (100), to the secondary battery cell (2).

[0068] That is, the roller unit (200) can serve the function of attaching an adhesive member (3) to the receiving portion (2a) and the sealing portion (2b) of the secondary battery cell (2) so that springback does not occur in the sealing portion (2b), thereby adhering the sealing portion (2b) to the receiving portion (2a).

[0069] To this end, the roller unit (200) may include a first multi-roller section (211) and a second multi-roller section (212) as an embodiment having two roller sections, or a single roller section (220) as an embodiment having one roller section.

[0070] An embodiment in which the roller unit (200) includes a first multi-roller section (211) and a second multi-roller section (212) can be referenced in FIGS. 1 to 3.

[0071] In this way, the roller unit (200) of the taping device (1) for a secondary battery according to one embodiment of the present invention may include a first multi-roller section (211) and a second multi-roller section (212).

[0072] Here, the first multi-roller section (211) can be moved while pressing the adhesive member (3) in contact with one side of the receiving section (2a). And the second multi-roller section (212) can be moved while pressing the adhesive member (3) in contact with the other side of the receiving section (2a).

[0073] At this time, while the adhesive member (3) is completely adhered to the secondary battery cell (2) by the first multi-roller section (211) and the second multi-roller section (212), a portion of the adhesive member (3) may be supported by the adhesive support section (120) or the adsorption support section (130) of the support unit (100).

[0074] Here, the above-mentioned adhesive support part (120) or adsorption support part (130) supports the adhesive member (3) that is temporarily attached to the sealing part (2b), and the first multi-roller part (211) and the second multi-roller part (212) slide over the surface of the receiving part (2a) and adhere the adhesive member (3) to the secondary battery cell (2).

[0075] And, the first multi-roller section (211) and the second multi-roller section (212) can move along a horizontal path to attach the adhesive member (3) to the secondary battery cell (2) with the same length and can move at a synchronized speed.

[0076] An embodiment in which the roller unit (200) includes a single roller section (220) can be referenced in FIG. 4 and FIG. 5.

[0077] In this way, the roller unit (200) of the taping device (1) for a secondary battery according to one embodiment of the present invention may include a single roller part (220).

[0078] Here, the single roller part (220) can be moved while adhering the adhesive member (3), which is attached and supported to one side of the receiving part (2a) by the support unit (100), in the direction of the sealing part (2b) and the other side of the receiving part (2a).

[0079] At this time, while the adhesive member (3) is completely adhered to the secondary battery cell (2) by the single roller part (220), a part of the adhesive member (3) may be supported by the complete adhesion support part (120) or the adsorption support part (130) of the support unit (100).

[0080] Here, the above-mentioned adhesive support part (120) or adsorption support part (130) supports the adhesive member (3) that is temporarily attached to one side of the receiving part (2a), and the single roller part (220) slides over the sealing part (2b) and the other side of the receiving part (2a) to adhere the adhesive member (3) to the secondary battery cell (2).

[0081] In addition, the single roller part (220) may be configured to be elastically attached to the secondary battery cell (2) in order to completely adhere the adhesive member (3) to the secondary battery cell (2).

[0083] FIG. 6 is a side view illustrating an adsorption tacking portion (110) in a taping device (1) for a secondary battery according to the present invention. Referring to the figure, the adsorption tacking portion (110) of the taping device (1) for a secondary battery according to one embodiment of the present invention may include a tacking head portion (111) and a tacking cylinder portion (112).

[0084] The above temporary bonding head portion (111) has a negative pressure channel (111a) formed on one surface that contacts the adhesive member (3), and can be connected to an external negative pressure forming portion (N). The above temporary bonding cylinder portion (112) is coupled to the above temporary bonding head portion (111) and can move the above temporary bonding head portion (111) toward the secondary battery cell (2).

[0085] Here, the negative pressure channel (111a) formed on one side of the temporary adhesive head part (111) can be formed over the entire side of the temporary adhesive head part (111) to maximize the area for adsorbing the adhesive member (3), and a detailed explanation thereof will be given later with reference to FIG. 7.

[0086] In addition, the tack head portion (111) may have one side formed in a flat or concave shape, and a detailed explanation thereof will be provided later with reference to FIG. 8.

[0087] In addition, the temporary sealing cylinder (112) of the taping device (1) for a secondary battery according to one embodiment of the present invention can elastically press the temporary sealing head (111) in the direction of the secondary battery cell (2).

[0088] By doing so, even if the shape of the part of the secondary battery cell (2) to which the adhesive member (3) is temporarily attached is irregular, the adhesive member (3) can be stably temporarily attached.

[0089] To this end, the temporary welding cylinder part (112) may include a temporary welding cylinder body (112a) and a temporary welding rod (112b), and the temporary welding rod (112b) may include a temporary welding inner rod (112c), a temporary welding outer rod (112d), and a temporary welding cushioning spring (112e).

[0090] Here, the temporary welding rod (112b) is coupled to the temporary welding head part (111), and the temporary welding cylinder body (112a) is connected to the temporary welding rod (112b) so that the temporary welding rod (112b) can be extended.

[0091] And, the temporary inner rod (112c) has the temporary head portion (111) connected to one end, and the temporary outer rod (112d) has the other end of the temporary inner rod (112c) inserted into it and at least a portion inserted into the temporary cylinder body (112a), and the temporary cushioning spring (112e) is positioned between the temporary inner rod (112c) and the temporary outer rod (112d) and can elastically press the temporary inner rod (112c) outward.

[0093] FIG. 7 is a front view illustrating the temporary bonding head portion (111) of the adsorption temporary bonding portion (110) of the taping device (1) for a secondary battery according to the present invention. Referring to the figure, the negative pressure passage (111a) of the taping device (1) for a secondary battery according to one embodiment of the present invention is formed over the entire surface of the temporary bonding head portion (111) that the adhesive member (3) contacts, and may be formed in a mesh shape or a radial shape.

[0094] That is, the negative pressure channel (111a) formed on one side of the temporary adhesive head part (111) can be formed over the entire side of the temporary adhesive head part (111) to maximize the area for adsorbing the adhesive member (3).

[0095] To this end, the negative pressure channel (111a) can be formed in a mesh or radial shape, and all channels are formed to be interconnected, so that the negative pressure around the adhesive member (3) formed by sucking air from the negative pressure forming part (N) can be formed uniformly throughout.

[0097] In addition, the temporary adhesive head portion (111) of the taping device (1) for a secondary battery according to one embodiment of the present invention may be provided with a discharge terminal (111b) connected to ground on one surface that contacts the adhesive member (3) so as to discharge the static charge of the adhesive member (3) to ground.

[0098] By forming the discharge terminal (111b) in this manner, the problem of the adhesive member (3) being blown away by static electricity generated from the adhesive member (3) is prevented, and the adhesive member (3) can be stably held and attached to the secondary battery cell (2) by temporary bonding.

[0100] FIG. 8 is a side view illustrating various embodiments of the surface to which the adhesive head portion (111) of the adsorption adhesive portion (110) of the taping device (1) for a secondary battery of the present invention contacts the adhesive member (3). Referring to the figure, the adhesive head portion (111) of the taping device (1) for a secondary battery according to one embodiment of the present invention may have the surface to which the adhesive member (3) contacts formed in a flat or concave shape.

[0101] That is, the shape of one side of the temporary adhesive head part (111) can be formed in a flat shape so as to uniformly form an adsorption force that adsorbs the adhesive member (3) by the negative pressure channel (111a).

[0102] In addition, the shape of one side of the temporary adhesive head (111) can be formed in a concave shape so as to maximize the area for adsorbing the adhesive member (3) by the negative pressure channel (111a).

[0104] FIG. 9 is a side view illustrating a full-support portion (120) of a taping device (1) for a secondary battery according to the present invention. Referring to the figure, the full-support portion (120) of the taping device (1) for a secondary battery according to one embodiment of the present invention may include a support head portion (121) and a support cylinder portion (122).

[0105] The support head portion (121) can be attached to a part of the adhesive member (3) attached to the secondary battery cell (2) by the adsorption bonding portion (110). The support cylinder portion (122) is coupled to the support head portion (121) and can press the support head portion (121) in the direction of the secondary battery cell (2).

[0106] Accordingly, while the roller unit (200) completely adheres the adhesive member (3) to the secondary battery cell (2), the adhesive support member (120) can support the adhesive member (3). Therefore, the roller unit (200) can stably attach the adhesive member (3) to the secondary battery cell (2) and prevent the adhesive member (3) from detaching.

[0107] Here, the support cylinder portion (122) of the taping device (1) for a secondary battery according to one embodiment of the present invention can elastically press the support head portion (121) in the direction of the secondary battery cell (2).

[0108] Accordingly, even if the shape of the secondary battery cell (2) portion that the adhesive support member (3) presses to support the adhesive member (3) is irregular, the adhesive member (3) can be stably supported.

[0109] To this end, the support cylinder part (122) may include a support cylinder body (122a) and a support rod (122b), and the support rod (122b) may include a support inner rod (122c), a support outer rod (122d), and a support cushioning spring (122e).

[0110] Here, the support rod (122b) is coupled to the support head part (121), and the support cylinder body (122a) is connected to the support rod (122b) so that the support rod (122b) can be extended.

[0111] And, the support inner rod (122c) is coupled to one end of the support head portion (121), and the support outer rod (122d) has the other end of the support inner rod (122c) inserted into it and at least a portion of it inserted into the support cylinder body (122a), and the support cushioning spring (122e) is positioned between the support inner rod (122c) and the support outer rod (122d) and can elastically press the support inner rod (122c) outward.

[0112] In addition, the support head portion (121) of the taping device (1) for a secondary battery according to one embodiment of the present invention may include a support block (121a) formed of a urethane material or a sponge material.

[0113] The material of the support head part (121) presented as described above is a material that is easy to deform and can be restored to its original shape.

[0114] Accordingly, in order to support the adhesive member (3), the shape of the secondary battery cell (2) portion that the adhesive support member (120) presses is irregular, but the adhesive member (3) can be stably supported.

[0116] FIG. 10 is a side view illustrating an embodiment in which the adhesive support portion (120) of the taping device (1) for a secondary battery of the present invention includes a plurality of support fingers (121c). Referring to the figure, the support head portion (121) of the taping device (1) for a secondary battery according to one embodiment of the present invention may include a support frame (121b) and support fingers (121c).

[0117] The support frame (121b) can be coupled to the support cylinder part (122). A plurality of support fingers (121c) are provided on the support frame (121b) and can be elastically pressed outward.

[0118] That is, by including a support head part (121) and a support frame (121b) and a support finger (121c), the adhesive member (3) can be stably supported even if the shape of the secondary battery cell (2) portion that the adhesive support part (120) presses to support the adhesive member (3) is irregular, and the adhesive member (3) can be adhered to the secondary battery cell (2).

[0119] For example, if the part supported by the above-mentioned adhesive support member (120) is a part of the adhesive member (3) that is temporarily attached to the folded sealing part (2b) of the secondary battery cell (2), the part supported by the above-mentioned adhesive support member (120) has an asymmetrical shape. In this case, the support finger (121c) that presses against the sealing part (2b) protrudes relatively short to support the adhesive member (3), and the support finger (121c) that presses against the side of the receiving part (2a) adjacent to the sealing part (2b) protrudes relatively long to support the adhesive member (3).

[0120] Specifically, the support finger (121c) may include a finger inner tab (121d), a finger outer tab (121e), and a finger spring (121f).

[0121] One end of the finger inner tab (121d) is in direct contact with the adhesive member (3), and can support the adhesive member (3) by pressing it in the direction of the secondary battery cell (2). The other end of the finger inner tab (121d) is inserted into one end of the finger outer tab (121e), and the other end can be coupled to the support frame (121b). The finger spring (121f) is positioned between the finger inner tab (121d) and the finger outer tab (121e) and can elastically press the finger inner tab (121d) outward.

[0123] FIG. 11 is a plan view illustrating an embodiment in which a support unit (100) of a taping device (1) for a secondary battery according to the present invention includes an adsorption support member (130). Referring to the figure, the support unit (100) of the taping device (1) for a secondary battery according to one embodiment of the present invention may include an adsorption support member (130).

[0124] The above adsorption support member (130) adsorbs the adhesive member (3) and moves it toward the secondary battery cell (2), and while the roller unit (200) presses the adhesive member (3) against the secondary battery cell (2), it can press a part of the adhesive member (3) toward the secondary battery cell (2) to support it in a state where it is adhered to the secondary battery cell (2).

[0125] That is, the support unit (100) may implement the temporary bonding of the adhesive member (3) by the aforementioned adsorption temporary bonding part (110) and the support of the adhesive member (3) by the aforementioned full bonding support part (120) in two configurations, but may also implement the two configurations in one configuration by the adsorption support part (130).

[0126] To this end, the adsorption support member (130) may have a channel formed to create negative pressure similar to the adhesive head member (111) of the adsorption adhesive member (110) described above, so as to grip the adhesive member (3) and attach a portion of the adhesive member (3) to the secondary battery cell (2), and may also support the adhesive member (3) gripped by negative pressure in the direction of the secondary battery cell (2) while the adhesive member (3) is attached to the secondary battery cell (2) by the roller unit (200).

[0128] The taping method for a secondary battery according to the present invention is described below. Here, the description of the taping method for a secondary battery according to the present invention is omitted in parts that overlap with the taping device for a secondary battery according to the present invention described above.

[0130] FIG. 12 is a flowchart illustrating a taping method for a secondary battery according to the present invention. Referring to the figure, a taping method for a secondary battery according to another embodiment of the present invention may include a support step and an adhesive step so that an adhesive member (3) provided as a cut sheet is adhered to a secondary battery cell (2).

[0131] Here, the support step supports a portion of the adhesive member (3). The adhesive step then adheres the adhesive member (3), with the portion supported, to the receiving portion (2a) and the sealing portion (2b).

[0132] In other words, the taping method for a secondary battery according to the present invention allows the adhesive member (3) to be supported by the support step and adhered during the adhesion step when it is adhered to the secondary battery cell (2).

[0133] Accordingly, the taping method for a secondary battery according to the present invention allows the adhesive member (3) to be stably attached to the secondary battery cell (2) and prevents the problem of the adhesive member (3) detaching.

[0135] In addition, the specific steps of the above support step may be configured differently depending on whether the secondary battery cell (2) is moved and fully bonded after the adhesive member (3) is temporarily bonded.

[0136] That is, in the case where the secondary battery cell (2) is moved and fully bonded after the adhesive member (3) is temporarily bonded in the above support step, the above support step may be configured to include an adsorption step, a temporary bonding step, a cell moving step, and a pressurizing step.

[0137] Here, the adsorption step is a step of adsorbing the adhesive member (3), and the temporary bonding step is a step of moving the adhesive member (3) toward the secondary battery cell (2) to bond a part of the adhesive member (3) to the secondary battery cell (2). The cell movement step is a step of moving the secondary battery cell (2) to a position where the roller unit (200) performing the bonding step is positioned, and the pressing step is a step of pressing a part of the adhesive member (3) attached to the secondary battery cell (2) toward the secondary battery cell (2).

[0138] Meanwhile, in the case where the adhesive member (3) is partially attached to the secondary battery cell (2) during the support step, the support step may be configured to include an adsorption step and a pressurization step.

[0139] Here, the adsorption step is a step of adsorbing the adhesive member (3), and the pressurizing step is a step of moving the adhesive member (3) toward the secondary battery cell (2) to adhere a part of the adhesive member (3) to the secondary battery cell (2) while simultaneously applying pressure toward the secondary battery cell (2).

[0141] In addition, the adhesive step may be configured differently depending on where the adhesive member (3) is supported in the support step.

[0142] That is, in the case where the adhesive member (3) is supported in the sealing part (2b) during the support step, the adhesive step may be configured to include a multi-adhesion step.

[0143] Here, the multi-adhesion step is a step of attaching the adhesive member (3) supported in the sealing portion (2b) to each of the two sides of the receiving portion (2a).

[0144] Meanwhile, in the case where the adhesive member (3) is supported in the receiving portion (2a) during the support step, the adhesive step may be configured to include a single adhesive step.

[0145] Here, the single adhesive step is a step of sequentially adhesively bonding the adhesive member (3), which is supported on one side of the receiving portion (2a), to the sealing portion (2b) and the other side of the receiving portion (2a).

[0147] Although embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it will be obvious to those skilled in the art that various modifications and variations are possible within the scope of the technical concept of the present invention as described in the claims. Explanation of the symbols

[0148] 1: Taping device for secondary batteries 2: Secondary battery cell 3: Adhesive member 100: Support unit 110: Suction tack weld part 111: Tack weld head part 112: Tent-joint cylinder section 120: Full-joint support section 121: Support head section 122: Support cylinder section 130: Suction support part 200: Roller unit 211: 1st Multi-roller Section 212: 2nd Multi-roller Section 220: Single Roller Section

Claims

Claim 1 A taping device for a secondary battery comprising: a secondary battery cell including an electrode assembly, a receiving portion in which the electrode assembly is received, and a sealing portion that seals the edge of the receiving portion and folds toward the receiving portion, and a cell body member which is a multilayer outer material, wherein the secondary battery cell comprises: a support unit that supports a portion of an adhesive member provided as a single sheet by cutting; and a roller unit that moves continuously in at least one direction among the receiving portion and the sealing portion and adheres the adhesive member supported by the support unit to the outer surface of the cell body member; wherein the support unit includes an adsorption tack bonding portion that adsorbs the adhesive member and moves it toward the secondary battery cell and adheres a portion of the adhesive member to the cell body member; and wherein the adsorption tack bonding portion includes a tack bonding head portion provided on one surface in which a discharge terminal connected to ground contacts the adhesive member to discharge the electrostatic charge of the adhesive member to ground. Claim 2 A taping device for a secondary battery according to claim 1, wherein the roller unit comprises: a first multi-roller section that moves while pressing the adhesive member in the direction of one side of the receiving portion; and a second multi-roller section that moves while pressing the adhesive member in the direction of the other side of the receiving portion. Claim 3 A taping device for a secondary battery according to claim 1, wherein the roller unit comprises a single roller portion that moves while adhering the adhesive member, which is adhered and supported to one surface of the receiving portion by the support unit, in the direction of the sealing portion and the direction of the other remaining surface of the receiving portion. Claim 4 A taping device for a secondary battery according to claim 1, wherein the support unit comprises a full-bonding support portion disposed spaced apart from the adsorption bonding portion by a certain distance and adjacent to the roller unit. Claim 5 A taping device for a secondary battery according to claim 4, wherein the tack head portion has a negative pressure channel formed on one surface contacted by the adhesive member and is connected to an external negative pressure forming portion, and the adsorption tack head portion is coupled to the tack head portion and includes a tack cylinder portion that moves the tack head portion in the direction of the secondary battery cell. Claim 6 A taping device for a secondary battery according to claim 5, wherein the negative pressure channel is formed over the entire surface of the temporary adhesive head portion that the adhesive member contacts, and is formed in a mesh or radial shape. Claim 7 In claim 5, the above-mentioned tack head portion is a taping device for a secondary battery in which one surface contacted by the adhesive member is formed in a flat or concave shape. Claim 8 delete Claim 9 In claim 5, the above-mentioned temporary welding cylinder portion is a taping device for a secondary battery that elastically presses the above-mentioned temporary welding head portion in the direction of the secondary battery cell. Claim 10 A taping device for a secondary battery according to claim 4, wherein the above-mentioned adhesive support comprises: a support head portion that is in close contact with a part of the adhesive member attached to the secondary battery cell by the adsorption adhesive portion; and a support cylinder portion coupled to the support head portion and pressing the support head portion in the direction of the secondary battery cell. Claim 11 In claim 10, the support cylinder portion is a taping device for a secondary battery that elastically presses the support head portion in the direction of the secondary battery cell. Claim 12 In claim 10, the above-mentioned support head part comprises a support block formed of urethane material or sponge material; a taping device for a secondary battery. Claim 13 A taping device for a secondary battery according to claim 10, wherein the support head portion comprises: a support frame coupled to the support cylinder portion; and a plurality of support fingers provided on the support frame and elastically pressed outward. Claim 14 A taping device for a secondary battery according to claim 1, wherein the support unit adsorbs the adhesive member and moves it toward the secondary battery cell, and while the roller unit presses the adhesive member against the secondary battery cell, the adsorption support member presses a portion of the adhesive member toward the secondary battery cell to support it in a state adhered to the secondary battery cell. Claim 15 A taping method for a secondary battery comprising: a supporting step including a suction step for supporting a portion of an adhesive member provided as a single sheet by cutting, so that the adhesive member is adhered to the receiving portion and the outer surface of the cell body member, wherein the secondary battery cell comprises an electrode assembly and a receiving portion in which the electrode assembly is received and a sealing portion that seals the edge of the receiving portion and is folded in the direction of the receiving portion; and an adhesive step for adhering the adhesive member to the outer surface of the cell body member so that the adhesive member with the portion supported is adhered to the receiving portion and the sealing portion; wherein the suction step supports the adhesive member with a temporary adhesive head portion including a discharge terminal that generates static electricity on the adhesive member. Claim 16 A taping method for a secondary battery according to claim 15, wherein the adhesive step comprises a multi-adhesion step of adhering the adhesive member supported in the sealing portion to each of both sides of the receiving portion. Claim 17 A taping method for a secondary battery according to claim 15, wherein the adhesive step comprises a single adhesive step of sequentially adhesively bonding the adhesive member supported on one side of the receiving portion to the sealing portion and the other side of the receiving portion. Claim 18 A taping method for a secondary battery according to claim 15, wherein the adsorption step adsorbs the adhesive member, and the support step includes a temporary bonding step of moving the adhesive member toward the secondary battery cell to bond a portion of the adhesive member to the secondary battery cell; a cell moving step of moving the secondary battery cell to a position where a roller unit performing the bonding step is arranged; and a pressing step of pressing a portion of the adhesive member attached to the secondary battery cell toward the secondary battery cell. Claim 19 A taping method for a secondary battery according to claim 15, wherein the adsorption step adsorbs the adhesive member, and the support step moves the adhesive member toward the secondary battery cell to adhere a portion of the adhesive member to the secondary battery cell while simultaneously applying pressure toward the secondary battery cell.

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