Application device and application method for secondary batteries

Abstract

An attachment device for a secondary battery according to an embodiment of the present invention may include a support unit and a roller unit to adhere an adhesive member cut and provided in sheet form to a secondary battery cell comprising a receiving portion for accommodating electrode assemblies and a sealing portion for sealing the edge of the receiving portion and folding toward the receiving portion, wherein the support unit supports a portion of the adhesive member, and the roller unit moves continuously along at least one of the receiving portion and the sealing portion to adhere the adhesive member supported by the support unit to the secondary battery cell.

Description

Technical Field

[0001] This invention relates to an attachment device and method for secondary batteries. Background Technology

[0002] With the development and increasing demand for technologies such as mobile devices and electric vehicles, the demand for secondary battery cells as energy sources has increased dramatically. The conversion between chemical energy and electrical energy in a secondary battery cell is reversible, making it a battery that can be repeatedly charged and discharged.

[0003] This secondary battery unit includes electrode components such as anode, cathode, separator, and electrolyte, which are the main components of the secondary battery, as well as a battery unit body component that protects the electrode components with a multilayer outer casing (laminated film case).

[0004] The battery cell main body component forms a sealing portion by sealing the edge of the receiving portion that accommodates the electrode assembly, and this sealing portion is folded toward the receiving portion.

[0005] However, even if the sealing part is folded towards the receiving part, there is a problem that it cannot be completely sealed due to springback.

[0006] To prevent this rebound, one could consider attaching tape to the secondary battery cell to make the sealing portion fit snugly against the receiving portion. However, even in this case, there are additional problems such as the tape not being able to adhere stably to the secondary battery cell and the tape detaching.

[0007] Therefore, in order to improve the above-mentioned problems and limitations, research on battery modules is needed.

[0008] Existing technical documents

[0009] Patent documents

[0010] (Patent Document 1) KR10-2018-0089014A Summary of the Invention

[0011] (a) Technical problems to be solved

[0012] The purpose of this invention is to provide an attachment device and method for secondary batteries that can attach tape to a secondary battery cell to prevent it from springing back.

[0013] On the other hand, the object of the present invention is to provide an attachment apparatus and attachment method for a secondary battery that can stably attach the adhesive member to the secondary battery cell and prevent the adhesive member from detaching.

[0014] (II) Technical Solution

[0015] An attachment device for a secondary battery according to an embodiment of the present invention may include a support unit and a roller unit to adhere an adhesive member cut and provided in sheet form to a secondary battery unit comprising a receiving portion for accommodating electrode assemblies and a sealing portion for sealing the edge of the receiving portion and folding toward the receiving portion, wherein the support unit supports a portion of the adhesive member, and the roller unit moves continuously along at least one of the receiving portion and the sealing portion to adhere the adhesive member supported by the support unit to the secondary battery unit.

[0016] The roller unit of the attachment device for a secondary battery according to an embodiment of the present invention may include: a first multi-roller that moves while pressing the adhesive member against one surface of the receiving portion; and a second multi-roller that moves while pressing the adhesive member against the remaining other surface of the receiving portion.

[0017] Alternatively, according to an embodiment of the present invention, the roller unit of the attachment device for a secondary battery may include a single roller that moves while pressing the adhesive member, which is bonded and supported by the support unit on one surface of the receiving portion, against the sealing portion and the remaining other surface of the receiving portion.

[0018] Additionally, according to an embodiment of the present invention, the support unit of the attachment device for a secondary battery may include: an adsorption temporary contact unit that adsorbs the adhesive member and moves the adhesive member toward the secondary battery unit, and adheres a portion of the adhesive member to the secondary battery unit; and a full contact support member that is disposed at a predetermined distance from the adsorption temporary contact unit and adjacent to the roller unit.

[0019] In one embodiment of the present invention, the adsorption temporary contact unit of the attachment device for a secondary battery may include: a temporary contact head that forms a negative pressure flow path on a surface in contact with the adhesive member and is connected to an external negative pressure forming part; and a temporary contact cylinder that is coupled to the temporary contact head and moves the temporary contact head toward the secondary battery unit.

[0020] Furthermore, according to an embodiment of the present invention, the negative pressure flow path of the attachment device for a secondary battery can be formed on the entire surface of the temporary contact head that contacts the adhesive member, and can be formed in a mesh or radial pattern.

[0021] Furthermore, in an embodiment of the present invention, one surface of the temporary contact head of the attachment device for a secondary battery that contacts the adhesive member may be formed in a flat shape or a recessed shape.

[0022] In addition, according to an embodiment of the present invention, one surface of the temporary contact head of the attachment device for a secondary battery that contacts the adhesive member may be provided with a discharge terminal connected to the ground to discharge the static charge of the adhesive member to the ground.

[0023] Furthermore, according to an embodiment of the present invention, the temporary contact cylinder of the attachment device for a secondary battery can elastically press the temporary contact head toward the secondary battery cell.

[0024] Additionally, according to an embodiment of the present invention, the fully contact support of the attachment device for a secondary battery may include: a support head, which is in close contact with a portion of the adhesive member attached to the secondary battery cell via the adsorption temporary contact unit; and a support cylinder, which is coupled to the support head and presses the support head toward the secondary battery cell.

[0025] In one embodiment of the present invention, the support cylinder of the attachment device for a secondary battery can elastically press the support head toward the secondary battery cell.

[0026] Furthermore, according to an embodiment of the present invention, the support head of the attachment device for a secondary battery may include a support block formed of polyurethane material or sponge material.

[0027] Additionally, according to an embodiment of the present invention, the support head of the attachment device for a secondary battery may include: a support frame coupled to the support cylinder; and a plurality of support fingers disposed on the support frame and elastically pressed outward.

[0028] Alternatively, according to an embodiment of the present invention, the support unit of the attachment device for a secondary battery may include an adsorption support member that adsorbs the adhesive member and moves the adhesive member toward the secondary battery unit. During the period when the roller unit presses the adhesive member tightly against the secondary battery unit, the adsorption support member presses a portion of the adhesive member toward the secondary battery unit, thereby supporting the adhesive member in a state of being adhered to the secondary battery unit.

[0029] An attachment method for a secondary battery according to another embodiment of the present invention may include a supporting step and an adhesive step to adhere an adhesive member, which is cut and provided as a single sheet, to a secondary battery cell including a receiving portion for accommodating electrode assemblies and a sealing portion that seals the edge of the receiving portion and is folded toward the receiving portion, wherein a portion of the adhesive member is supported in the supporting step, and a portion of the supported adhesive member is adhered to the receiving portion and the sealing portion in the adhesive step.

[0030] In another embodiment of the present invention, the bonding step of the method for attaching a secondary battery may include multiple bonding steps, in which the bonding member supported on the sealing portion is bonded to both sides of the receiving portion respectively.

[0031] Alternatively, the bonding step of the attachment method for a secondary battery according to another embodiment of the present invention may include a single bonding step, in which the bonding member supported on one surface of the receiving portion is sequentially bonded to the sealing portion and the other surface of the receiving portion.

[0032] Additionally, according to another embodiment of the present invention, the supporting step of the attachment method for a secondary battery may include: an adsorption step, adsorbing the adhesive member; a temporary contact step, moving the adhesive member toward the secondary battery cell and adhering a portion of the adhesive member to the secondary battery cell; a battery cell moving step, moving the secondary battery cell to a position where a roller unit is provided for performing the adhesion step; and a pressing step, pressing a portion of the adhesive member attached to the secondary battery cell toward the secondary battery cell.

[0033] Alternatively, the supporting step of the attachment method for a secondary battery according to another embodiment of the present invention may include: an adsorption step, adsorbing the adhesive member; and a pressing step, moving the adhesive member toward the secondary battery cell to press the adhesive member toward the secondary battery cell while adhering a portion of the adhesive member to the secondary battery cell.

[0034] (III) Beneficial Effects

[0035] The attachment device for secondary batteries of the present invention can attach tape to the secondary battery cell to prevent rebound.

[0036] On the other hand, the attachment device for secondary batteries of the present invention can stably attach the adhesive member to the secondary battery cell and prevent the adhesive member from detaching.

[0037] However, the various beneficial advantages and effects of the present invention are not limited to the above description, and can be further readily understood in the process of describing specific embodiments of the present invention. Attached Figure Description

[0038] Figure 1 This is a side view showing the adsorption temporary contact unit of the support unit in an embodiment of the roller unit of the attachment apparatus for secondary batteries of the present invention, which includes a first multi-roller and a second multi-roller.

[0039] Figure 2This is a side view showing the support unit in full contact with the support member in an embodiment of the roller unit of the attachment apparatus for secondary batteries of the present invention, which includes a first multi-roller and a second multi-roller.

[0040] Figure 3 This is a plan view showing a support unit in an embodiment of the roller unit of the attachment apparatus for secondary batteries according to the present invention, which includes a first multi-roller and a second multi-roller.

[0041] Figure 4 This is a side view showing the adsorption temporary contact unit of the support unit in an embodiment of the attachment apparatus for secondary batteries of the present invention, where the roller unit includes a single roller.

[0042] Figure 5 This is a side view showing the support unit in full contact with the support member in an embodiment of the roller unit of the attachment apparatus for secondary batteries of the present invention, which includes a single roller.

[0043] Figure 6 This is a side view showing the adsorption temporary contact unit in the attachment device for secondary batteries according to the present invention.

[0044] Figure 7 This is a front view showing the temporary contact head of the adsorption temporary contact unit in the attachment device for secondary batteries of the present invention.

[0045] Figure 8 This is a side view showing various embodiments of a surface of a temporary contact head of an adsorption temporary contact unit in an attachment apparatus for secondary batteries according to the present invention, which contacts an adhesive member.

[0046] Figure 9 This is a side view showing the fully contact support member in the attachment device for secondary batteries according to the present invention.

[0047] Figure 10 This is a side view illustrating an embodiment of a fully contact support member comprising a plurality of support fingers in an attachment apparatus for secondary batteries according to the present invention.

[0048] Figure 11 This is a plan view illustrating an embodiment of the support unit in the attachment device for secondary batteries of the present invention, which includes an adsorption support member.

[0049] Figure 12 This is a flowchart illustrating the attachment method for secondary batteries according to the present invention.

[0050] Explanation of reference numerals in the attached figures

[0051] 1: Attachment device for secondary batteries 2: Secondary battery unit

[0052] 3: Adhesive component 100: Support unit

[0053] 110: Temporary adsorption contact unit; 111: Temporary contact head

[0054] 112: Temporary contact with cylinder block; 120: Full contact with support component.

[0055] 121: Support head; 122: Support cylinder body

[0056] 130: Adsorption support component; 200: Roller unit

[0057] 211: First multi-roller; 212: Second multi-roller

[0058] 220: Single roller Detailed Implementation

[0059] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. However, embodiments of the present invention can be modified in various different ways, and the scope of the present invention is not limited to the embodiments described below. Moreover, the embodiments of the present invention are provided to provide a more complete description of the present invention to those skilled in the art. For clarity, the shapes and dimensions of components may be shown in enlarged form in the drawings.

[0060] Furthermore, unless otherwise expressly stated in the context, singular expressions in this specification include plural expressions, and throughout the specification, the same or similar reference numerals denote the same components or corresponding components.

[0061] The present invention relates to an attachment device 1 and attachment method for a secondary battery, and can attach tape to a secondary battery cell 2 to prevent rebound.

[0062] First, the attachment device 1 for secondary batteries of the present invention will be described. The attachment device 1 for secondary batteries of the present invention may include a roller unit 200 to attach tape to a secondary battery unit 2.

[0063] On the other hand, in the attachment device 1 for secondary batteries of the present invention, the adhesive member 3 can be stably attached to the secondary battery cell 2, and the problem of the adhesive member 3 detaching can be prevented. Therefore, the attachment device 1 for secondary batteries of the present invention may include a support unit 100.

[0064] Here, the adhesive member 3 can be, for example, tape, especially insulating tape.

[0065] Additionally, the secondary battery unit 2 may include an electrode assembly and a battery unit body component covering the electrode assembly. The battery unit body component may include: a receiving portion 2a for receiving the electrode assembly; and a sealing portion 2b for sealing the area around the receiving portion 2a.

[0066] The electrode assembly essentially comprises an electrolyte and is used within the main body of the battery cell. The electrolyte may contain lithium salts such as LiPF6 and LiBF4 in organic solvents such as ethylene carbonate (EC), propylene carbonate (PC), diethyl carbonate (DEC), ethyl methyl carbonate (EMC), and dimethyl carbonate (DMC). Furthermore, the electrolyte may be liquid, solid, or gel-like.

[0067] Furthermore, the battery cell body component is configured to protect the electrode assembly and contain the electrolyte. For example, the battery cell body component can be configured as a pouch-type component or a can-type component. The pouch-type component has a shape that seals and contains the electrode assembly on three or four sides. It is typically a component that, while containing the electrode assembly internally, is folded and joined to seal three sides: the upper side and the two side sides, excluding the lower side. Similarly, the can-type component has a shape that seals and contains the electrode assembly on one side. It is typically a component that, while containing the electrode assembly internally, is folded and joined to seal one side: the upper side, excluding the lower side and the two side sides.

[0068] However, these pouch-type and can-type secondary battery units 2 are merely examples of secondary battery units 2 housed in the battery module of the present invention, and the secondary battery units 2 housed in the battery module of the present invention are not limited to these types.

[0069] Specifically, referring to the accompanying drawings, the attachment device 1 for a secondary battery of the present invention, in order to attach the adhesive member 3 to the secondary battery cell 2, in... Figures 1 to 3 An embodiment of a roller unit 200 for attaching adhesive member 3 is shown, having two rollers, and... Figure 4 and Figure 5 An embodiment of the roller unit 200 having one roller is shown.

[0070] Right now, Figure 1 This is a side view showing the adsorption temporary contact unit 110 of the support unit 100 in an embodiment of the roller unit 200 for the attachment device 1 for secondary batteries of the present invention, which includes a first multi-roller 211 and a second multi-roller 212. Figure 2 This is a side view showing the support unit 100 in full contact with the support member 120 in an embodiment of the roller unit 200 of the attachment device 1 for secondary batteries of the present invention, which includes a first multi-roller 211 and a second multi-roller 212. Figure 3This is a plan view showing the support unit 100 in an embodiment of the roller unit 200 of the attachment device 1 for secondary batteries of the present invention, which includes a first multi-roller 211 and a second multi-roller 212.

[0071] in addition, Figure 4 This is a side view showing the adsorption temporary contact unit 110 of the support unit 100 in an embodiment of the roller unit 200 of the attachment apparatus 1 for secondary batteries of the present invention, which includes a single roller 220. Figure 5 This is a side view showing the support unit 100 fully contacting the support member 120 in an embodiment of the roller unit 200 of the attachment device 1 for secondary batteries of the present invention, which includes a single roller 220.

[0072] in addition, Figures 1 to 5 This is an embodiment where the support unit 100 supporting the adhesive member 3 includes an adsorption temporary contact unit 110 and a fully contact support member 120. For reference, Figure 11 An embodiment is shown in which the support unit 100 includes an adsorption support 130 that simultaneously performs the functions of an adsorption temporary contact unit 110 and a full contact support 120.

[0073] Referring to the accompanying drawings as described above, an attachment device 1 for a secondary battery according to an embodiment of the present invention may include a support unit 100 and a roller unit 200 to adhere an adhesive member 3, which is cut and provided in single sheet form, to a secondary battery unit 2, wherein the secondary battery unit 2 includes a receiving portion 2a for accommodating an electrode assembly and a sealing portion 2b that seals the edge of the receiving portion 2a and is folded along the direction of the receiving portion 2a.

[0074] Here, the support unit 100 can support a portion of the adhesive member 3. Furthermore, the roller unit 200 moves continuously along at least one of the receiving portion 2a and the sealing portion 2b, and can adhere the adhesive member 3 supported by the support unit 100 to the secondary battery unit 2. As described above, by attaching the adhesive member 3, the sealing portion 2b can be tightly adhered to the receiving portion 2a.

[0075] The support unit 100 can stably attach the adhesive member 3 to the secondary battery unit 2 and prevent the adhesive member 3 from detaching.

[0076] That is, the support unit 100 can attach a part of the adhesive member 3 to the secondary battery unit 2 while supporting a part of the adhesive member 3, thereby preventing problems such as the adhesive member 3 detaching during the previous process of attaching the adhesive member 3, and the adhesive member 3 not being able to stick stably and sticking crookedly.

[0077] Therefore, the support unit 100 may include: an adsorption temporary contact unit 110 for attaching a portion of the adhesive member 3 to the secondary battery unit 2; and a full contact support 120 for supporting a portion of the adhesive member 3 on the secondary battery unit 2.

[0078] That is, the support unit 100 of the attachment device 1 for secondary batteries according to an embodiment of the present invention may include the adsorption temporary contact unit 110 and the full contact support member 120.

[0079] The adsorption temporary contact unit 110 adsorbs the adhesive member 3 and moves it toward the secondary battery unit 2, and can adhere a portion of the adhesive member 3 to the secondary battery unit 2. The full contact support member 120 is disposed at a predetermined distance from the adsorption temporary contact unit 110 and is disposed adjacent to the roller unit 200.

[0080] Furthermore, during the period when the roller unit 200 presses the remaining portion of the adhesive member 3, which is separated from the secondary battery unit 2, against the secondary battery unit 2, the fully contact support member 120 presses and supports a portion of the adhesive member 3 attached to the secondary battery unit 2 via the adsorption temporary contact unit 110 in the direction of the secondary battery unit 2.

[0081] That is, when the adhesive member 3 temporarily contacts the secondary battery unit 2 through the adsorption temporary contact unit 110, the secondary battery unit 2 moves to the position where the full contact support 120 is provided, and the adhesive member 3 is supported by the full contact support 120 and can be fully attached to the secondary battery unit 2 through the roller unit 200. This can be referred to... Figure 3 It is easy to know.

[0082] As described above, the adsorption temporary contact unit 110, by adsorbing and holding the adhesive member 3 through the formation of negative pressure, etc., adheres a portion of the adhesive member 3 to the secondary battery unit 2. Thus, the adhesive member 3 can be temporarily in contact with the secondary battery unit 2 before the roller unit 200 completely adheres the adhesive member 3 to the secondary battery unit 2.

[0083] Therefore, the adsorption temporary contact unit 110 may include a temporary contact head 111 and a temporary contact cylinder 112, which will be referred to later. Figure 6 Provide a detailed description.

[0084] Furthermore, the full contact support 120 serves to support the adhesive member 3 during the period when the roller unit 200 fully attaches the adhesive member 3 to the secondary battery unit 2. That is, during the period when the roller unit 200 presses and attaches the adhesive member 3 to the secondary battery unit 2, the full contact support 120 acts as a support point, thereby further and stably attaching the adhesive member 3 to the secondary battery unit 2.

[0085] Therefore, the fully contact support 120 may include a support head 121 and a support cylinder 122, which will be referred to later. Figure 9 Provide a detailed description.

[0086] On the other hand, according to the embodiment where the support unit 100 includes an adsorption support 130, the adsorption support 130 can simultaneously perform the function of temporarily contacting the adhesive member 3 to the secondary battery unit 2 and supporting the adhesive member 3 during the period when the roller unit 200 completely attaches the adhesive member 3 to the secondary battery unit 2, as will be referred to later. Figure 11 Provide a detailed description.

[0087] The roller unit 200 serves to completely attach the adhesive member 3, which supports the secondary battery unit 2, to the secondary battery unit 2.

[0088] That is, the roller unit 200 can serve to attach the adhesive member 3, which is used to press the sealing part 2b against the receiving part 2a, to the receiving part 2a and the sealing part 2b of the secondary battery unit 2, so as to prevent the sealing part 2b from springing back.

[0089] Therefore, as an embodiment in which the roller unit 200 includes two rollers, the roller unit 200 may include a first multi-roller 211 and a second multi-roller 212, or as an embodiment in which the roller unit 200 includes one roller, the roller unit 200 may include a single roller 220.

[0090] For embodiments where the roller unit 200 includes a first multi-roller 211 and a second multi-roller 212, refer to... Figures 1 to 3 .

[0091] As described above, the roller unit 200 of the attachment device 1 for secondary batteries according to an embodiment of the present invention may include a first multi-roller 211 and a second multi-roller 212.

[0092] Here, the first multi-roller 211 can move while pressing the adhesive member 3 against one surface of the receiving portion 2a. Additionally, the second multi-roller 212 can move while pressing the adhesive member 3 against the remaining surface of the receiving portion 2a.

[0093] At this time, during the process of completely bonding the adhesive member 3 to the secondary battery unit 2 by the first multi-roller 211 and the second multi-roller 212, a portion of the adhesive member 3 may be supported by the fully contact support member 120 or the adsorption support member 130 of the support unit 100.

[0094] Here, the fully contact support 120 or the adsorption support 130 supports the adhesive member 3 that is temporarily in contact with the sealing portion 2b, and the first multi-roller 211 and the second multi-roller 212 adhere the adhesive member 3 to the secondary battery unit 2 while sliding on the surface of the receiving portion 2a.

[0095] In addition, the first multi-roller 211 and the second multi-roller 212 can move on a horizontal path and at a synchronized speed to attach the adhesive member 3 to the secondary battery cell 2 with the same length.

[0096] For embodiments where the roller unit 200 includes a single roller 220, refer to... Figure 4 and Figure 5 .

[0097] As described above, the roller unit 200 of the attachment device 1 for secondary batteries according to an embodiment of the present invention may include a single roller 220.

[0098] Here, the single roller 220 can move while the adhesive member 3, which is bonded and supported by the support unit 100 on one surface of the receiving portion 2a, is pressed against the sealing portion 2b and the remaining other surface of the receiving portion 2a.

[0099] At this time, during the process of fully bonding the adhesive member 3 to the secondary battery unit 2 by the single roller 220, a portion of the adhesive member 3 may be supported by the fully contact support member 120 or the adsorption support member 130 of the support unit 100.

[0100] Here, the fully contact support 120 or the adsorption support 130 supports the adhesive member 3 which is temporarily in contact with one surface of the receiving portion 2a, and the single roller 220 adheres the adhesive member 3 to the secondary battery cell 2 while sliding on the other surface of the sealing portion 2b and the receiving portion 2a.

[0101] Additionally, the single roller 220 can be configured to elastically adhere to the secondary battery cell 2 to completely adhere the adhesive member 3 to the secondary battery cell 2.

[0102] Figure 6 This is a side view showing the adsorption temporary contact unit 110 in the attachment device 1 for secondary batteries according to the present invention. Referring to this figure, the adsorption temporary contact unit 110 of the attachment device 1 for secondary batteries according to an embodiment of the present invention may include a temporary contact head 111 and a temporary contact cylinder 112.

[0103] A negative pressure flow path 111a is formed on one surface of the temporary contact head 111 that contacts the adhesive member 3, and it can be connected to an external negative pressure forming part N. Furthermore, the temporary contact cylinder 112 is attached to the temporary contact head 111, and the temporary contact head 111 can be moved toward the secondary battery unit 2.

[0104] Here, the negative pressure flow path 111a formed on one surface of the temporary contact head 111 can be formed on the entire surface of the temporary contact head 111 to ensure the maximum area for adsorption of the adhesive member 3, which will be referred to later. Figure 7 Provide a detailed description.

[0105] Additionally, the temporary contact head 111 may have one surface shaped as either flat or recessed, as will be discussed later. Figure 8 Provide a detailed description.

[0106] Furthermore, according to an embodiment of the present invention, the temporary contact cylinder 112 of the attachment device 1 for a secondary battery can elastically press the temporary contact head 111 toward the secondary battery unit 2.

[0107] Therefore, even if the shape of the portion of the secondary battery cell 2 that is temporarily in contact with the adhesive member 3 is irregular, it can stably and temporarily contact the adhesive member 3.

[0108] Therefore, the temporary contact cylinder body 112 may include a temporary contact cylinder body 112a and a temporary contact rod 112b. The temporary contact rod 112b may include a temporary contact inner rod 112c, a temporary contact outer rod 112d and a temporary contact buffer spring 112e.

[0109] Here, the temporary contact head 111 is coupled to the temporary contact rod 112b, and the temporary contact cylinder body 112a is connected to the temporary contact rod 112b to allow the temporary contact rod 112b to extend and retract.

[0110] Additionally, the temporary contact head 111 is attached to one end of the temporary contact inner rod 112c, the other end of the temporary contact inner rod 112c is inserted into the temporary contact outer rod 112d, at least a portion of the temporary contact outer rod 112d is inserted into the temporary contact cylinder body 112a, and the temporary contact buffer spring 112e is disposed between the temporary contact inner rod 112c and the temporary contact outer rod 112d, and can elastically press the temporary contact inner rod 112c outward.

[0111] Figure 7 This is a front view showing the temporary contact head 111 of the adsorption temporary contact unit 110 in the attachment device 1 for secondary batteries according to the present invention. Referring to this figure, the negative pressure flow path 111a of the attachment device 1 for secondary batteries according to an embodiment of the present invention is formed on the entire surface of the temporary contact head 111 that contacts the adhesive member 3, and may be formed in a mesh or radial pattern.

[0112] That is, the negative pressure flow path 111a formed on one surface of the temporary contact head 111 can be formed on the entire surface of the temporary contact head 111 to ensure the maximum area of ​​the adhesive member 3 adsorbed.

[0113] Therefore, the negative pressure flow path 111a can be formed in a mesh or radial shape, and all flow paths are formed to be interconnected, so that the negative pressure around the adhesive member 3 formed by the negative pressure forming part N drawing in air can be uniformly formed.

[0114] In addition, in the temporary contact head 111 of the attachment device 1 for a secondary battery according to an embodiment of the present invention, the discharge terminal 111b connected to the ground can be disposed on a surface in contact with the adhesive member 3 to discharge the static charge of the adhesive member 3 to the ground.

[0115] As described above, by forming the discharge terminal 111b, the problem of the adhesive member 3 scattering due to the static charge generated by the adhesive member 3 can be prevented, and the adhesive member 3 can be stably held to temporarily attach to the secondary battery cell 2.

[0116] Figure 8 This is a side view showing various embodiments of a surface of a temporary contact head 111 of an adsorption temporary contact unit 110 in a secondary battery attachment device 1 of the present invention that contacts an adhesive member 3. Referring to this figure, the surface of the temporary contact head 111 of the secondary battery attachment device 1 according to an embodiment of the present invention that contacts the adhesive member 3 may be formed in a flat shape or a recessed shape.

[0117] That is, the temporary contact head 111 can be shaped into a flat shape on one surface to uniformly form an adsorption force that adsorbs the adhesive member 3 through the negative pressure flow path 111a.

[0118] In addition, one surface of the temporary contact head 111 can be shaped as a concave shape to ensure the maximum area of ​​the adhesive member 3 adsorbed by the negative pressure flow path 111a.

[0119] Figure 9 This is a side view showing the fully contact support 120 in the attachment device 1 for secondary batteries according to the present invention. Referring to this figure, the fully contact support 120 of the attachment device 1 for secondary batteries according to an embodiment of the present invention may include a support head 121 and a support cylinder 122.

[0120] The support head 121 can be closely attached to a portion of the adhesive member 3 that is attached to the secondary battery unit 2 via the adsorption temporary contact unit 110. The support cylinder 122 is coupled to the support head 121 and can press the support head 121 toward the secondary battery unit 2.

[0121] Therefore, during the period when the roller unit 200 completely bonds the adhesive member 3 to the secondary battery unit 2, the fully contact support member 120 can support the adhesive member 3. Thus, the roller unit 200 can stably attach the adhesive member 3 to the secondary battery unit 2 and prevent the adhesive member 3 from detaching.

[0122] Here, according to an embodiment of the present invention, the support cylinder 122 of the attachment device 1 for a secondary battery can elastically press the support head 121 toward the secondary battery unit 2.

[0123] Therefore, even if the shape of the secondary battery cell 2 portion pressed by the fully contact support 120 to support the adhesive member 3 is irregular, the adhesive member 3 can be stably supported.

[0124] Therefore, the support cylinder 122 may include a support cylinder body 122a and a support rod 122b. The support rod 122b may include an inner support rod 122c, an outer support rod 122d and a buffer spring 122e.

[0125] Here, the support head 121 is coupled to the support rod 122b, and the support cylinder body 122a is connected to the support rod 122b to extend and retract the support rod 122b.

[0126] Additionally, the support head 121 is attached to one end of the inner support rod 122c, the other end of the inner support rod 122c is inserted into the outer support rod 122d, and at least a portion of the outer support rod 122d is inserted into the support cylinder body 122a. The support buffer spring 122e is disposed between the inner support rod 122c and the outer support rod 122d, and elastically presses the inner support rod 122c outward.

[0127] Furthermore, according to an embodiment of the present invention, the support head 121 of the attachment device 1 for secondary batteries may include a support block 121a formed of polyurethane material or sponge material.

[0128] The material of the support head 121 as described above is a material that is easily deformed and can be restored to its original shape.

[0129] Therefore, even if the shape of the secondary battery cell 2 portion pressed by the fully contact support 120 to support the adhesive member 3 is irregular, the adhesive member 3 can be stably supported.

[0130] Figure 10 This is a side view illustrating an embodiment of the fully contact support 120 in the attachment device 1 for secondary batteries of the present invention, which includes a plurality of support fingers 121c. Referring to the above figure, the support head 121 of the attachment device 1 for secondary batteries according to an embodiment of the present invention may include a support frame 121b and support fingers 121c.

[0131] The support frame 121b can be attached to the support cylinder 122. A plurality of the support fingers 121c are disposed on the support frame 121b and can be elastically pressed outward.

[0132] That is, the support head 121 includes a support frame 121b and a support finger 121c. Therefore, even if the shape of the secondary battery cell 2 portion pressed by the fully contact support member 120 to support the adhesive member 3 is irregular, the adhesive member 3 can be stably supported and the adhesive member 3 can be tightly attached to the secondary battery cell 2.

[0133] For example, if the portion supported by the fully contact support 120 is the part where the adhesive member 3 temporarily contacts the folded sealing portion 2b of the secondary battery unit 2, then the shape of the portion supported by the fully contact support 120 is asymmetrical. In this case, the support finger 121c pressing the sealing portion 2b protrudes shorter to support the adhesive member 3, and the support finger 121c pressing the side of the receiving portion 2a adjacent to the sealing portion 2b protrudes longer to support the adhesive member 3.

[0134] Specifically, the supporting finger member 121c may include a finger-shaped inner protrusion 121d, a finger-shaped outer protrusion 121e, and a finger-shaped spring 121f.

[0135] One end of the inner finger-shaped protrusion 121d can directly contact the adhesive member 3 to press and support the adhesive member 3 towards the secondary battery unit 2. The other end of the inner finger-shaped protrusion 121d is inserted into one end of the outer finger-shaped protrusion 121e, and the other end of the outer finger-shaped protrusion 121e can be attached to the support frame 121b. The finger-shaped spring 121f can be disposed between the inner finger-shaped protrusion 121d and the outer finger-shaped protrusion 121e, and can elastically press the inner finger-shaped protrusion 121d outward.

[0136] Figure 11 This is a plan view illustrating an embodiment of the support unit 100 in the attachment device 1 for secondary batteries of the present invention, which includes an adsorption support member 130. Referring to the above figure, the support unit 100 of the attachment device 1 for secondary batteries according to an embodiment of the present invention may include an adsorption support member 130.

[0137] The adsorption support 130 adsorbs the adhesive member 3 and moves the adhesive member 3 toward the secondary battery unit 2. During the period when the roller unit 200 presses the adhesive member 3 tightly against the secondary battery unit 2, the adsorption support 130 can press a portion of the adhesive member 3 toward the secondary battery unit 2, thereby supporting the adhesive member 3 in a state of being adhered to the secondary battery unit 2.

[0138] That is, the support unit 100 can achieve the above-mentioned temporary contact of the adhesive member 3 by adsorption temporary contact unit 110 and the above-mentioned support of the adhesive member 3 by full contact support member 120 through two structures. However, the two structures can also be implemented as one structure by adsorption support member 130.

[0139] For this purpose, the adsorption support 130 holds the adhesive member 3 by forming a flow path that creates negative pressure, such as the temporary contact head 111 of the adsorption temporary contact unit 110, to bond a portion of the adhesive member 3 to the secondary battery unit 2. During the bonding of the adhesive member 3 to the secondary battery unit 2 by the roller unit 200, the adhesive member 3, held by the negative pressure, can also be pressed and supported in the direction of the secondary battery unit 2.

[0140] The method for attaching a secondary battery according to the present invention will now be described. Here, in describing the method for attaching a secondary battery according to the present invention, portions that are repetitive with those described above regarding the attachment apparatus for a secondary battery according to the present invention will be omitted.

[0141] Figure 12 This is a flowchart illustrating the attachment method for a secondary battery according to the present invention. Referring to this figure, the attachment method for a secondary battery according to another embodiment of the present invention may include a supporting step and an adhesive step to adhesively attach the cut adhesive member 3, provided in a single sheet, to the secondary battery cell 2.

[0142] Here, a portion of the adhesive member 3 is supported in the supporting step. Additionally, in the bonding step, a portion of the supported adhesive member 3 is bonded to the receiving portion 2a and the sealing portion 2b.

[0143] In other words, in the attachment method for a secondary battery of the present invention, when the adhesive member 3 is attached to the secondary battery unit 2, it can be supported by the support step and bonded in the adhesion step.

[0144] Therefore, the attachment method for secondary batteries of the present invention can stably attach the adhesive member 3 to the secondary battery cell 2 and prevent the adhesive member 3 from detaching.

[0145] In addition, the specific steps in the support step can be configured differently depending on whether the secondary battery unit 2 is moved to make full contact after the adhesive member 3 is temporarily brought into contact.

[0146] That is, in the support step, when the secondary battery unit 2 is moved to complete contact after the adhesive member 3 has made temporary contact, the support step may include an adsorption step, a temporary contact step, a battery unit moving step, and a pressing step.

[0147] Here, the adsorption step is the step of adsorbing the adhesive member 3, and the temporary contact step is the step of moving the adhesive member 3 toward the secondary battery unit 2 and adhering a portion of the adhesive member 3 to the secondary battery unit 2. Additionally, the battery unit moving step is the step of moving the secondary battery unit 2 to a position where the roller unit 200 for performing the adsorption step is located, and the pressing step is the step of pressing a portion of the adhesive member 3 attached to the secondary battery unit 2 toward the secondary battery unit 2.

[0148] On the other hand, when a portion of the adhesive member 3 is attached to and supported on the secondary battery unit 2 in the supporting step, the supporting step may include an adsorption step and a pressing step.

[0149] Here, the adsorption step is the step of adsorbing the adhesive member 3, and the pressing step is the step of moving the adhesive member 3 toward the secondary battery unit 2 and pressing the adhesive member 3 toward the secondary battery unit 2 while adhering a portion of the adhesive member 3 to the secondary battery unit 2.

[0150] Furthermore, in the bonding step, the specific steps can be configured differently depending on the position of the supporting bonding member 3 in the supporting step.

[0151] That is, in the supporting step, when the adhesive member 3 is supported in the sealing part 2b, the adhesive step may include multiple adhesive steps.

[0152] Here, the multiple bonding steps are steps of bonding the adhesive members 3 supported on the sealing part 2b to the two sides of the receiving part 2a respectively.

[0153] On the other hand, in the supporting step, when the adhesive member 3 is supported in the receiving portion 2a, the adhesive step may include a single adhesive step.

[0154] Here, the single bonding step is the step of sequentially bonding the adhesive member 3, which is supported on one surface of the receiving portion 2a, to the sealing portion 2b and the other surface of the receiving portion 2a.

[0155] The embodiments of the present invention have been described above, but the scope of the present invention is not limited thereto. Various modifications and changes can be made without departing from the technical concept of the present invention as set forth in the claims, which will be obvious to those skilled in the art.

Claims

1. A device for attaching a secondary battery, wherein the device for attaching a secondary battery includes a support unit and a roller unit to adhere an adhesive member, which is cut to be provided as a single sheet, to the accommodation portion and the sealing portion of a secondary battery unit including an accommodation portion that accommodates an electrode assembly and a sealing portion that seals an edge of the accommodation portion and is folded toward the accommodation portion, wherein the support unit supports a portion of the adhesive member, the roller unit continuously moves in a direction of at least one of the accommodation portion and the sealing portion, and adheres the adhesive member supported by the support unit to the secondary battery unit, the support unit includes: a temporary contact suction portion that suctions the adhesive member and moves the adhesive member toward the secondary battery unit, and adheres a portion of the adhesive member to the secondary battery unit; and a full contact support portion that is disposed apart from the temporary contact suction portion by a predetermined distance, and is disposed adjacent to the roller unit, the temporary contact suction portion includes: a temporary contact head portion that forms a negative pressure flow path on one surface that is in contact with the adhesive member adhered to the accommodation portion and the sealing portion, and is connected to an external negative pressure forming portion; and a temporary contact cylinder portion that is coupled to the temporary contact head portion, and moves the temporary contact head portion toward the secondary battery unit, the negative pressure flow path is formed on the entire one surface of the temporary contact head portion that is in contact with the adhesive member, and is formed in a mesh or radial shape, the one surface of the temporary contact head portion that is in contact with the adhesive member is formed in a concave shape to temporarily contact the adhesive member to a portion of the secondary battery unit that has an irregular shape. 2.The device for attaching a secondary battery according to claim 1, wherein the roller unit includes: a first multi-roller portion that moves while closely adhering the adhesive member in a direction of one surface of the accommodation portion; and a second multi-roller portion that moves while closely adhering the adhesive member in a direction of the remaining other surface of the accommodation portion. 3.The device for attaching a secondary battery according to claim 1, wherein the roller unit includes a single roller portion that moves while closely adhering the adhesive member adhered and supported by the support unit on one surface of the accommodation portion in a direction of the sealing portion and the remaining other surface of the accommodation portion. 4.The device for attaching a secondary battery according to claim 1, wherein the one surface of the temporary contact head portion that is in contact with the adhesive member is provided with a discharge terminal connected to the ground to discharge electrostatic charges of the adhesive member to the ground. 5.The device for attaching a secondary battery according to claim 1, wherein the temporary contact cylinder portion elastically presses the temporary contact head portion toward the secondary battery unit. 6.The device for attaching a secondary battery according to claim 1, wherein the full contact support portion includes: a support head portion that closely adheres to a portion of the adhesive member attached to the secondary battery unit by the temporary contact suction portion; and A support cylinder portion is coupled to the support head portion and presses the support head portion toward the secondary battery cell.

7. The attaching device for a secondary battery according to claim 6, wherein The support cylinder portion elastically presses the support head portion toward the secondary battery cell.

8. The attaching device for a secondary battery according to claim 6, wherein The support head portion includes a support block formed of a urethane material or a sponge material.

9. The attaching device for a secondary battery according to claim 6, wherein The support head portion includes: a support frame coupled to the support cylinder portion; and a plurality of support fingers provided on the support frame and elastically pressed toward the outside.

10. An attaching device for a secondary battery, wherein The attaching device for a secondary battery includes a support unit and a roller unit to adhere an adhesive member, which is cut to be provided in a single sheet, to the accommodation portion and the sealing portion of a secondary battery cell including an accommodation portion that accommodates an electrode assembly and a sealing portion that seals an edge of the accommodation portion and is folded toward the accommodation portion, wherein the support unit supports a portion of the adhesive member, the roller unit continuously moves in a direction of at least one of the accommodation portion and the sealing portion and adheres the adhesive member supported by the support unit to the secondary battery cell, the support unit including an adsorption support portion that is configured of an adsorption temporary contact portion and a full contact support portion as one structure, the adsorption support portion adsorbing the adhesive member and moving the adhesive member toward the secondary battery cell, the adsorption support portion pressing a portion of the adhesive member toward the secondary battery cell during the roller unit tightly adhering the adhesive member to the secondary battery cell, thereby supporting the adhesive member in a state of being adhered to the secondary battery cell, the adsorption temporary contact portion includes: a temporary contact head portion forming a negative pressure flow path at one surface in contact with the adhesive member adhered to the accommodation portion and the sealing portion and connected to an external negative pressure forming portion; and a temporary contact cylinder portion coupled to the temporary contact head portion and moving the temporary contact head portion toward the secondary battery cell, the negative pressure flow path is formed at the entire one surface of the temporary contact head portion in contact with the adhesive member and is formed in a mesh or radial shape, the one surface of the temporary contact head portion in contact with the adhesive member is formed in a concave shape to temporarily contact the adhesive member to a shape-irregular portion of the secondary battery cell.

11. An attaching method for a secondary battery, wherein The attaching method for a secondary battery includes a support step and an adhering step to adhere an adhesive member, which is cut to be provided in a single sheet, to the accommodation portion and the sealing portion of a secondary battery cell including an accommodation portion that accommodates an electrode assembly and a sealing portion that seals an edge of the accommodation portion and is folded toward the accommodation portion, wherein a portion of the adhesive member is supported in the support step, adhering a part of the supported adhesive member to the housing portion and the sealing portion in the adhering step, the supporting step includes: a suction step of suctioning the adhesive member with one surface of a temporary contact head portion, the one surface of the temporary contact head portion forming a negative pressure flow path in contact with the adhesive member contacting the housing portion and the sealing portion; and a temporary contact step of moving the adhesive member toward the secondary battery cell and adhering a part of the adhesive member to a shape-irregular portion of the secondary battery cell, in the suction step, the adhesive member is suctioned with one surface of the temporary contact head portion formed in a recessed shape and formed in a mesh shape or a radial shape.

12. The attaching method for a secondary battery according to claim 11, wherein the adhering step includes a multiple adhering step in which the adhesive member supported on one surface of the housing portion is adhered to both side surfaces of the housing portion.

13. The attaching method for a secondary battery according to claim 11, wherein the adhering step includes a single adhering step in which the adhesive member supported on one surface of the housing portion is sequentially adhered to the sealing portion and the other surface of the housing portion.

14. The attaching method for a secondary battery according to claim 11, wherein the supporting step includes: a cell moving step of moving the secondary battery cell to a position at which a roller unit performing the adhering step is provided; and a pressing step of pressing a part of the adhesive member attached to the secondary battery cell toward the secondary battery cell.

15. The attaching method for a secondary battery according to claim 11, wherein the supporting step and the adhering step are simultaneously performed, the attaching method for a secondary battery further includes: a pressing step of pressing a part of the adhesive member toward the secondary battery cell during the supporting step and the adhering step.

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