Electrode assembly conveying tray

Abstract

An electrode assembly transfer tray for a cylindrical battery is provided. An electrode assembly transfer tray according to one embodiment of the present invention is used for accommodating an electrode assembly in which a laminate is wound around a winding axis, and includes a base plate for supporting the electrode assembly, in which the base plate has a base portion, the base portion includes: a first accommodating portion for accommodating a first joint portion located at one end of the winding axis in the extending direction and formed by winding the first uncoated portion; a second accommodating portion for accommodating a second joint portion located at the other end of the winding axis in the extending direction and formed by winding the second uncoated portion; and a support portion for supporting the main body portion.

Description

Technical Field

[0001] The present disclosure relates to an electrode assembly transfer tray for cylindrical batteries.

[0002] This application claims priority to Korean Patent Application No. 10-2022-0068447, filed on June 3, 2022, the disclosure of which is incorporated herein by reference. Background Art

[0003] Secondary batteries have high applicability depending on product groups and electrical characteristics such as high energy density, and are therefore generally applied not only to portable devices but also to electric vehicles (EV) or hybrid electric vehicles (HEV) driven by power supplies. Such secondary batteries have attracted attention as new energy sources that improve eco-friendliness and energy efficiency because they not only have the main advantage of significantly reducing the use of fossil fuels, but also have no byproducts generated by the use of energy.

[0004] Currently widely used secondary batteries include lithium-ion batteries, lithium polymer batteries, nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, etc. The operating voltage of a unit secondary battery cell (i.e., a unit battery cell) is about 2.5V to 4.5V. Therefore, if a higher output voltage is required, a plurality of battery cells can be connected in series to form a battery pack. In addition, according to the required charge / discharge capacity of the battery pack, a plurality of battery cells can be connected in parallel to form a battery pack. Therefore, the number of battery cells included in the battery pack can be set differently according to the required output voltage or the required charge / discharge capacity.

[0005] In addition, in the case of a cylindrical battery, a separator as an insulator is inserted between the positive electrode and the negative electrode, and then wound to form a core-shaped electrode assembly, which is inserted into a battery can together with an electrolyte to constitute a battery. In addition, a strip-shaped electrode tab can be connected to each uncoated portion of the positive electrode and the negative electrode, and the electrode tab electrically connects the electrode assembly and the electrode terminal exposed to the outside. For reference, the positive terminal is the cover plate of the sealing body that seals the opening of the battery can, and the negative terminal is the battery can.

[0006] In the production process of such cylindrical batteries, it is necessary to transfer the electrode assembly. In a small cylindrical battery having a conventional 18650 or 21700 form factor, there are not many cases of damage during the transfer of the electrode assembly due to its small size and weight.

[0007] However, when the form factor is increased to apply cylindrical batteries to electric vehicles, as the size and weight of the electrode assembly increase, a new type of transfer tray capable of preventing the electrode assembly from being damaged during transfer is required. Summary of the invention

[0008] Technical issues

[0009] The present disclosure is designed to solve the problems of the related art, and thus the present disclosure is directed to providing an electrode assembly conveying tray configured to minimize damage to an electrode assembly when conveying an electrode assembly wound in an electrode assembly winding device to an assembly apparatus.

[0010] However, the technical problems to be solved by the present disclosure are not limited to the above problems, and according to the following description of the present disclosure, those skilled in the art can clearly understand other problems not mentioned herein.

[0011] Technical Solution

[0012] According to an electrode assembly conveying tray of an embodiment of the present disclosure, the electrode assembly conveying tray may be configured to accommodate an electrode assembly, the electrode assembly comprising: a first electrode, the first electrode comprising a first uncoated portion; a second electrode, the second electrode comprising a second uncoated portion; and a separator, the separator being interposed between the first electrode and the second electrode, and wherein a laminate comprising the first electrode, the second electrode and the separator is wound around a winding axis, the electrode assembly conveying tray may include: a bottom plate, the bottom plate being configured to support the electrode assembly, wherein the bottom plate may include a base portion, wherein the base portion may include: a first accommodating portion, the first accommodating portion being located at one end in an extension direction of the winding axis and being configured to accommodate a first joint portion formed by winding the first uncoated portion; a second accommodating portion, the second accommodating portion being located at the other end in the extension direction of the winding axis and being configured to accommodate a second joint portion formed by winding the second uncoated portion; and a supporting portion, the supporting portion being configured to support a main body portion located between the first joint portion and the second joint portion.

[0013] The bottom plate may include a plurality of base portions arranged in at least one of a first direction parallel to the winding axis and a second direction perpendicular to the first direction.

[0014] The base portion may have a groove shape configured to accommodate the electrode assembly.

[0015] The base portion may have a length that is longer than a length of the electrode assembly along the winding axis.

[0016] The base portion may be configured such that the first joint portion accommodated in the first accommodation portion and the second joint portion accommodated in the second accommodation portion do not contact the bottom plate.

[0017] The support portion may be configured such that a bottom surface formed therein does not contact the body portion of the electrode assembly.

[0018] The support portion may support the electrode assembly at a position lower than a winding axis of the electrode assembly.

[0019] The support portion may include a first support portion configured to support a first side of the body portion and a second support portion configured to support a second side of the body portion.

[0020] The first supporting portion and the second supporting portion may be configured to be in contact with an outer peripheral surface of the body portion.

[0021] The first supporting portion and the second supporting portion may be configured such that at least a portion thereof has a same radius of curvature as that of the outer peripheral surface of the body portion.

[0022] The first supporting portion and the second supporting portion may be inclined with respect to the bottom surface to have a predetermined angle, and may be inclined in opposite directions to each other.

[0023] The bottom plate may include a plurality of base portions arranged in at least one of a first direction parallel to the winding axis and a second direction perpendicular to the first direction,

[0024] The plurality of seating portions may be arranged such that a pair of seating portions adjacent to each other in the second direction are spaced apart by a predetermined distance.

[0025] The first supporting portion and the second supporting portion may be discontinuously formed along the first direction.

[0026] The first supporting portion and the second supporting portion may have a discontinuous shape at a position corresponding to a center of the body portion along the first direction to grip an outer peripheral surface of the electrode assembly to lift and lower the electrode assembly.

[0027] The electrode assembly transfer tray may include a guide portion configured to prevent the electrode assembly from being separated along an edge of the bottom plate during transfer.

[0028] Beneficial Effects

[0029] According to one aspect of the present disclosure, when an electrode assembly having an increased size and weight is conveyed, the electrode assembly can be conveyed in a horizontally placed state, thereby reducing the possibility of damaging the electrode assembly during conveyance. In addition, the first joint portion and the second joint portion, which are relatively more likely to be damaged when the conveying disk interferes during conveyance, are not supported by the supporting portion, so the possibility of damaging the first joint portion and the second joint portion during conveyance of the electrode assembly can also be reduced.

[0030] According to another aspect of the present disclosure, the base portion is formed longer than the length of the electrode assembly so that the outer peripheral surface and / or end of the first joint portion and the second joint portion do not contact the bottom plate, thereby more effectively reducing the possibility of damage to the first joint portion and the second joint portion. In addition, in this case, in order to maximize the above-mentioned effect, the conveying path of the electrode assembly using the electrode assembly conveying tray can be set to move only in a first direction parallel to the winding axis of the electrode assembly and in a second direction perpendicular to the winding axis of the electrode assembly.

[0031] According to still another aspect of the present disclosure, the lowest portion of the electrode assembly does not contact the bottom surface, and thus damage caused by a load of the electrode assembly may be prevented.

[0032] According to another aspect of the present disclosure, the support portion may stably support the body portion of the electrode assembly from both sides.

[0033] According to another aspect of the present invention, even if the electrode assembly is separated from the base portion, the guide portion can prevent the electrode assembly from being separated from the entire electrode assembly transfer tray. In addition, the handle portion can facilitate the transfer process of the electrode assembly tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a diagram illustrating first and second electrodes of an electrode assembly transferred by an electrode assembly transfer tray according to an embodiment of the present disclosure.

[0035] Figure 2 is a diagram showing a state before an electrode assembly transferred by an electrode assembly transfer tray according to an embodiment of the present disclosure is wound, and shows a laminate including a first electrode, a second electrode, and a separator.

[0036] Figure 3 is a cross-sectional view illustrating an electrode assembly moved by an electrode assembly transfer tray according to an embodiment of the present disclosure.

[0037] Figure 4 is a perspective view illustrating an electrode assembly moved by an electrode assembly transfer tray according to an embodiment of the present disclosure.

[0038] Figure 5 is a perspective view illustrating an electrode assembly transfer tray according to an embodiment of the present disclosure.

[0039] Figure 6 is a plan view illustrating an electrode assembly transfer tray according to an embodiment of the present disclosure.

[0040] Figure 7 is shown along Figure 6 A diagram of a cross section taken along line AA'.

[0041] Figure 8 yes Figure 6 A magnified view of a local area.

[0042] Fig. 9 is a diagram illustrating a state in which an electrode assembly according to an embodiment of the present disclosure is accommodated in a base portion of an electrode assembly conveying tray.

[0043] Fig.10 The electrode assembly is shown to be housed in accordance with Figure 7 A diagram showing a state of a transport tray according to an embodiment of the present disclosure.

[0044] Fig.11 is a diagram illustrating a state in which an electrode assembly is accommodated in an electrode assembly conveying tray according to another embodiment of the present disclosure.

[0045] Fig.12 is shown along Figure 6 FIG. 5 is a diagram of a portion of a cross section taken along line BB'.

[0046] Fig.13 The electrode assembly is shown to be housed in Fig.12 A diagram showing a state of an electrode assembly in a transfer tray. DETAILED DESCRIPTION

[0047] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The accompanying drawings here illustrate preferred embodiments of the present disclosure and are used together with the following detailed description to further understand the technical aspects of the present disclosure, and therefore the present disclosure should not be construed as being limited to the contents described in the accompanying drawings. The same reference numerals represent the same components. In addition, in the accompanying drawings, the thickness, proportion, and size of the components may be exaggerated in order to effectively describe the technical content.

[0048] It should be understood that the terms used in the specification and the appended claims should not be interpreted as limited to the general meaning and dictionary meaning, but should be interpreted based on the meaning and concepts corresponding to the technical aspects of the present disclosure based on the principle of allowing the inventor to appropriately define the terms for the best interpretation.

[0049] Terms indicating directions, such as up, down, left, right, front, and rear, used herein are only for convenience of description, and it is obvious to those skilled in the art that these terms may vary depending on the positions of the elements or observers.

[0050] Therefore, since the embodiments described herein and the configurations shown in the drawings are merely the most preferred embodiments of the present disclosure and do not represent all technical aspects of the present disclosure, it should be understood that various equivalents and modifications may be substituted for them when applying.

[0051] Figure 1 is a diagram illustrating first and second electrodes of an electrode assembly transferred by an electrode assembly transfer tray according to an embodiment of the present disclosure. Figure 2 is a diagram showing a state before an electrode assembly transferred by an electrode assembly transfer tray according to an embodiment of the present disclosure is wound, and shows a laminate including a first electrode, a second electrode, and a separator. Figure 3 is a cross-sectional view illustrating an electrode assembly moved by an electrode assembly transfer tray according to an embodiment of the present disclosure.

[0052] Reference Figures 1 to 3 The electrode assembly 100 transferred by the electrode assembly transfer tray 1 according to the present disclosure may include a first electrode 10 , a second electrode 20 , and a separator 30 .

[0053] The first electrode 10 may include a first uncoated portion 11. The first electrode 10 may have a first electrode active material applied to at least a portion of one or both surfaces thereof, and may include a first uncoated portion 11 to which the first electrode active material is not applied at one end of the first electrode 10. The first uncoated portion 11 may be disposed at one end of the first electrode 10 along a winding direction (X-axis extension direction). The first electrode 10 may be a negative electrode or a positive electrode.

[0054] The second electrode 20 may include a second uncoated portion 21. The second electrode 20 may have a second electrode active material applied to at least a portion of one or both surfaces of the second electrode 20, and may include a second uncoated portion 21 to which the second electrode active material is not applied at one end of the second electrode 20. The second uncoated portion 21 may be disposed at one end of the second electrode 20 along the winding direction (X-axis extension direction). The second electrode 20 may be a positive electrode or a negative electrode, and its polarity is opposite to that of the first electrode 10.

[0055] The separator 30 may be interposed between the first electrode 10 and the second electrode 20. The separator 30 may use a porous polymer film alone or by laminating a plurality of polymer films, the porous polymer film including at least one polymer selected from polyolefin polymers (e.g., ethylene homopolymer, propylene homopolymer, ethylene / butene copolymer, ethylene / hexene copolymer, ethylene / methacrylate copolymer, etc.). As another example, the separator 30 may use a conventional porous nonwoven fabric, such as a nonwoven fabric made of high melting point glass fiber, polyethylene terephthalate fiber, etc.

[0056] The electrode assembly 100 may be manufactured by winding a laminate 100' including a first electrode 10, a second electrode 20, and a separator 30 around a winding axis (a direction parallel to the Z axis). The laminate 100' may be formed by stacking the first electrode 10 and the second electrode 20 at least once and inserting the separator 30 therebetween. The electrode assembly 100 may have a central hole C formed by winding the laminate 100' around a winding axis (a direction parallel to the Z axis).

[0057] Figure 4 is a perspective view illustrating an electrode assembly moved by an electrode assembly transfer tray according to an embodiment of the present disclosure.

[0058] Reference Figure 4 , the electrode assembly 100 may form a first joint portion 110 , a second joint portion 120 , and a body portion 130 by winding a laminate 100 ′.

[0059] The first joint portion 110 can be formed by winding the first uncoated portion 11. The first joint portion 110 can be located at one end (one end located in the positive direction of the Z axis) in the extension direction of the winding axis (the direction parallel to the Z axis). This is to use at least a portion of the first uncoated portion 11 exposed to the outside of the diaphragm 30 as an electrode joint. At least a portion of the first uncoated portion 11 may include a plurality of sections divided along the winding direction (X-axis extension direction) of the electrode assembly 100. The plurality of sections may be bent in the radial direction of the electrode assembly 100. The plurality of bent sections may overlap into several layers. Therefore, the first joint portion 110 can form a surface by overlapping several layers of the plurality of sections. However, the first joint portion 110 can be in a form in which the plurality of sections are completely bent in the radial direction of the electrode assembly 100, but can also be in a form that is bent only at a certain angle.

[0060] The second joint portion 120 can be formed by winding the second uncoated portion 21. The second joint portion 120 may be located at the other end (one end located in the negative direction of the Z axis) in the extension direction of the winding axis (the direction parallel to the Z axis). This is to use at least a portion of the second uncoated portion 21 exposed to the outside of the diaphragm 30 itself as an electrode joint. At least a portion of the second uncoated portion 21 may include a plurality of sections divided along the winding direction of the electrode assembly 100. The plurality of sections may be bent in the radial direction of the electrode assembly 100. The plurality of bent sections may overlap into several layers. Therefore, the second joint portion 120 may form a surface by overlapping several layers of the plurality of sections. However, the second joint portion 120 may not only be in a form in which the plurality of sections are completely bent in the radial direction of the electrode assembly 100, but may also be in a form that is bent only at a certain angle.

[0061] The body portion 130 may be located between the first joint portion 110 and the second joint portion 120. The body portion 130 may be formed by winding a portion corresponding to a portion of the first electrode 10 to which the first electrode 10 active material is applied and / or a portion of the second electrode 20 to which the second electrode 20 active material is applied.

[0062] Figure 5 is a perspective view illustrating an electrode assembly transfer tray according to an embodiment of the present disclosure. Figure 6 is a plan view illustrating an electrode assembly transfer tray according to an embodiment of the present disclosure. Figure 7 is shown along Figure 6 A diagram of a cross section taken along line AA'.

[0063] Reference Figures 5 to 7 , the electrode assembly conveying tray 1 may include a bottom plate 200 .

[0064] The bottom plate 200 may be configured to support the electrode assembly 100. The bottom plate 200 may include a base portion 210. The base portion 210 may be configured to accommodate the electrode assembly 100. The base portion 210 may have a groove shape configured to accommodate the electrode assembly 100. The base portion 210 may be configured so that the electrode assembly 100 is placed in a horizontal direction. The base portion 210 may be arranged in multiples. The base portion 210 may be arranged in multiples along at least one of a first direction (a direction parallel to the Z axis) parallel to the winding axis of the electrode assembly (a direction parallel to the Z axis) and a second direction (a direction parallel to the Y axis) perpendicular to the first direction. For example, the base portion 210 may be arranged in 10 columns along the first direction (a direction parallel to the Z axis) and in 6 rows along the second direction (a direction parallel to the Y axis).

[0065] Figure 8 yes Figure 6 A magnified view of a local area. Fig. 9 is a diagram illustrating a state in which an electrode assembly according to an embodiment of the present disclosure is accommodated in a base portion of an electrode assembly conveying tray.

[0066] Reference Figure 8 and Fig. 9 The base portion 210 may include a first receiving portion 211, a second receiving portion 212, and a support portion 213. The first receiving portion 211 and the second receiving portion 212 may be formed at both sides of the support portion 213 along a longitudinal direction (extension direction of the Z axis), respectively.

[0067] The first accommodating portion 211 may be formed at a position corresponding to the first joint portion 110. The first accommodating portion 211 may be configured to accommodate the first joint portion 110. The first accommodating portion 211 may have a groove shape configured to accommodate the first joint portion 110. The first accommodating portion 211 may be configured to accommodate the first joint portion 110 of the electrode assembly 100 in a horizontal state. The first accommodating portion 211 may be configured not to support the first joint portion 110 accommodated in the first accommodating portion 211.

[0068] The second accommodating portion 212 may be formed at a position corresponding to the second joint portion 120. The second accommodating portion 212 may be configured to accommodate the second joint portion 120. The second accommodating portion 212 may have a groove shape configured to accommodate the second joint portion 120. The second accommodating portion 212 may be configured to accommodate the second joint portion 120 of the electrode assembly 100 in a horizontal state. The second accommodating portion 212 may be configured not to support the second joint portion 120 accommodated in the second accommodating portion 212.

[0069] The support portion 213 may be configured to support the body portion 130. The support portion 213 may be configured to support the body portion 130 of the electrode assembly 100 in a horizontal state.

[0070] According to such a configuration of the present disclosure, when the electrode assembly 100 having an increased size and weight is transferred, the electrode assembly 100 can be transferred in a horizontally placed state, thereby reducing the possibility of damaging the electrode assembly 100 during transfer. In addition, the first joint portion 110 and the second joint portion 120, which are relatively more likely to be damaged when the transfer tray is disturbed during transfer, are not supported by the support portion 213, and thus the possibility of damaging the first joint portion 110 and the second joint portion 120 during transfer of the electrode assembly 100 can also be reduced.

[0071] Will refer again Figures 8 to 9 The detailed structure of the base portion 210 is described.

[0072] The length L1 of the base portion 210 may be longer than the length L2 of the electrode assembly 100 along the winding axis (in a direction parallel to the Z axis). The support portion 213 of the base portion 210 may have substantially the same length as the body portion 130 of the electrode assembly 100, the first receiving portion 211 of the base portion 210 may have substantially a longer length than the first joint portion 110 of the electrode assembly 100, and the second receiving portion 212 of the base portion 210 may have substantially a longer length than the second joint portion 120 of the electrode assembly 100.

[0073] The base portion 210 may be configured such that the first joint portion 110 accommodated in the first accommodation portion 211 does not contact the bottom plate 200. The base portion 210 may be configured such that the second joint portion 120 accommodated in the second accommodation portion 212 does not contact the bottom plate 200.

[0074] See also Figure 3 and Figure 4 as well as Figure 8 and Fig. 9 , the base portion 210 may be configured so that the outer peripheral surfaces and ends of the first joint portion 110 and the second joint portion 120 do not contact the bottom plate 200. In addition, when the first joint portion 110 and / or the second joint portion 120 of the electrode assembly 100 has a curved structure along the radial direction of the electrode assembly 100, the base portion 210 may be configured so that the surface formed by bending the first joint portion 110 and the second joint portion 120 does not contact the bottom plate 200.

[0075] According to such a configuration of the present disclosure, the base portion 210 can be formed to be longer than the length of the electrode assembly 100, so that the outer peripheral surface and / or end of the first joint portion 110 and the second joint portion 120 do not contact the bottom plate 200, thereby more effectively reducing the possibility of damage to the first joint portion 110 and the second joint portion 120. In addition, in this case, in order to maximize the above-mentioned effect, the conveying path of the electrode assembly 100 using the electrode assembly conveying tray 1 can be set to move only in a first direction (direction parallel to the Z axis) parallel to the winding axis (direction parallel to the Z axis) of the electrode assembly 100 and a second direction (direction parallel to the Y axis) perpendicular to the winding axis (direction parallel to the Z axis) of the electrode assembly 100.

[0076] Fig.10 The electrode assembly is shown to be housed in accordance with Figure 7 A diagram showing a state of a transport tray according to an embodiment of the present disclosure. Fig.11 is a diagram illustrating a state in which an electrode assembly is accommodated in an electrode assembly conveying tray according to another embodiment of the present disclosure.

[0077] The following will refer to Fig.10 and Fig.11 The detailed structure of the support portion 213 of the base portion 210 is described in detail.

[0078] The support portion 213 may be configured such that the bottom surface B formed therein does not contact the body portion 130 of the electrode assembly 100. The support portion 213 may support the electrode assembly 100 at a position lower than the winding axis (direction parallel to the Z axis) of the electrode assembly 100. The support portion 213 may support the body portion 130 of the electrode assembly 100 such that the electrode assembly 100 is in a state of substantially floating from the bottom surface B.

[0079] According to such a configuration of the present disclosure, the lowest portion of the electrode assembly 100 does not contact the bottom surface B, and thus damage caused by a load of the electrode assembly 100 may be prevented.

[0080] Reference again Fig.10 and 11 , the supporting portion 213 may include a first supporting portion 213a and a second supporting portion 213b.

[0081] The support portion 213 can support the main body portion 130, and the first support portion 213a and the second support portion 213b are respectively located on both sides of a first direction (direction parallel to the Z axis) parallel to the winding axis of the electrode assembly 100 (direction parallel to the Z axis) and a second direction (direction parallel to the Y axis) perpendicular to the winding axis of the electrode assembly 100 (direction parallel to the Z axis).

[0082] The first supporting portion 213a may be configured to support a first side (negative direction of the Y axis) of the body portion 130. The first supporting portion 213a may be configured to contact the outer peripheral surface of the body portion 130. The first supporting portion 213a may be inclined with respect to the bottom surface B to have a predetermined angle, such as Fig.10 At least a portion of the first support portion 213a may have a curvature radius that is the same as the curvature radius of the outer peripheral surface of the main body portion 130, as shown in FIG. Fig.11 As shown. The first support portion 213a may be inclined in a direction opposite to the second support portion 213b. The first support portion 213a may be inclined at approximately 50° to 80° relative to the bottom surface B. The first support portion 213a may be inclined at approximately 60° to 80° relative to the bottom surface B. The first support portion 213a may be inclined at approximately 65° to 75° relative to the bottom surface B. The first support portion 213a may be inclined at approximately 68° to 72° relative to the bottom surface B. The first support portion 213a may be inclined at approximately 70° relative to the bottom surface B.

[0083] The second supporting portion 213b may be configured to support the second side (positive direction of the Y axis) of the main body portion 130. The second supporting portion 213b may be configured to contact the outer peripheral surface of the main body portion 130. The second supporting portion 213b may be inclined at a predetermined angle relative to the bottom surface B, such as Fig.10At least a portion of the second support portion 213b may have a curvature radius that is the same as the curvature radius of the outer peripheral surface of the main body portion 130, as shown in FIG. Fig.11 As shown. The second support portion 213b may be inclined in a direction opposite to the first support portion 213a. The second support portion 213b may be inclined at approximately 50° to 80° relative to the bottom surface B. The second support portion 213b may be inclined at approximately 60° to 80° relative to the bottom surface B. The second support portion 213b may be inclined at approximately 65° to 75° relative to the bottom surface B. The second support portion 213b may be inclined at approximately 68° to 72° relative to the bottom surface B. The second support portion 213b may be inclined at approximately 70° relative to the bottom surface B.

[0084] According to this configuration of the present disclosure, the support portion 213 can stably support the body portion 130 of the electrode assembly 100 from both sides. In particular, when the inclination angles of the first support portion 213a and the second support portion 213b are formed as described above, the movement of the electrode assembly 100 can be minimized by the optimally formed angle.

[0085] Fig.12 is shown along Figure 6 FIG. 5 is a diagram of a portion of a cross section taken along line BB'. Fig.13 The electrode assembly is shown to be housed in Fig.12 A diagram showing a state of an electrode assembly in a transfer tray.

[0086] Will refer to Figure 5 and Figure 6 Together with Fig.12 and Fig.13 The detailed structures of the first supporting portion 213 a and the second supporting portion 213 b and the arrangement relationship between a pair of base portions 210 adjacent to each other in the second direction are described in detail.

[0087] Reference Fig.12 and Fig.13 , the first support portion 213a and the second support portion 213b may be formed discontinuously along the first direction (direction parallel to the X-axis). The first support portion 213a and the second support portion 213b may have a tapered shape narrowed toward the bottom surface B. The first support portion 213a and the second support portion 213b may have a discontinuous region S formed at a position corresponding to the center of the body portion 130 in the first direction (direction parallel to the Z-axis). The discontinuous region S of the first support portion 213a and the discontinuous region S of the second support portion 213b may be symmetrical along the second direction (direction parallel to the Y-axis).

[0088] The outer circumferential surface of the electrode assembly 100 may be exposed through the substantially trapezoidal opening formed by the discontinuous region S. In the electrode assembly 100 , the outer circumferential surface thereof exposed through the trapezoidal opening may be gripped and lifted by an operator or a lifting jig.

[0089] Refer to Figure 5 and Figure 6 , the plurality of base portions 210 may be arranged such that a pair of base portions 210 adjacent to each other in the second direction (direction parallel to the Y-axis) are spaced apart by a predetermined distance. The predetermined distance may be set to ensure a space in which an operator's hand or a lifting jig configured to grip and lift the outer peripheral surface of the electrode assembly 100 may be inserted.

[0090] Refer again Figures 5 to 7 , the electrode assembly conveying tray 1 may include a guide portion 220 .

[0091] The guide portion 220 may be configured so that the electrode assembly 100 is not separated along the edge of the bottom plate 200 during transfer. The guide portion 220 may be in the form of protruding in the negative direction of the X-axis along the edge of the bottom plate 200. The guide portion 220 may be four plates coupled along the edge of the bottom plate 200.

[0092] The guide portion 220 may include a handle portion 221 configured to be raised and lowered during the transfer process.

[0093] The handle portion 221 has an opening shape formed in the guide portion 220 and may be hooked by an operator's hand or a hook connected to the lifting jig. The handle portion 221 may be provided in plural.

[0094] According to such a configuration of the present disclosure, even if the electrode assembly 100 is separated from the base portion 210, the electrode assembly 100 can be prevented from being separated from the entire electrode assembly transfer tray 1 by the guide portion 220. In addition, the handle portion 221 can facilitate the transfer process of the electrode assembly 100 tray.

[0095] Although the present disclosure has been described above with respect to a limited number of embodiments and drawings, the present disclosure is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes may be made thereto within the technical aspects of the present disclosure and the equivalent scope of the appended claims.

[0096] [reference numerals]

[0097] 1: Electrode assembly delivery tray

[0098] 10: First electrode

[0099] 11: First uncoated portion

[0100] 20: Second electrode

[0101] 21: Second uncoated portion

[0102] 30: Diaphragm

[0103] 110: First joint part

[0104] 120: Second joint part

[0105] 130: Main part

[0106] 100': Laminated

[0107] 100: Electrode device

[0108] C: Winding axis

[0109] 200: Base plate

[0110] B: Bottom surface

[0111] 210: Base part

[0112] 211: First accommodation part

[0113] 212: Second accommodating part

[0114] 213: Supporting part

[0115] 213a: First supporting portion

[0116] 213b: Second supporting portion

[0117] S: Discontinuous area

[0118] 220: Boot section

[0119] 221: Handle part

Claims

1. An electrode assembly transfer tray, the electrode assembly transfer tray being configured to accommodate an electrode assembly, the electrode assembly comprising: a first electrode, the first electrode comprising a first uncoated portion; a second electrode, the second electrode comprising a second uncoated portion; and a separator interposed between the first electrode and the second electrode, and wherein a laminate including the first electrode, the second electrode and the separator is wound around a winding axis, the electrode assembly conveying tray comprising: a bottom plate configured to support the electrode assembly, wherein the bottom plate comprises a base portion, and Wherein, the base portion comprises: a first accommodating portion located at one end in the extending direction of the winding axis and configured to accommodate a first joint portion formed by winding the first uncoated portion; a second accommodating portion located at the other end in the extending direction of the winding axis and configured to accommodate a second joint portion formed by winding the second uncoated portion; and A support portion is configured to support a main body portion located between the first joint portion and the second joint portion.

2. The electrode assembly conveying tray according to claim 1, in, The bottom plate includes a plurality of base portions arranged in at least one of a first direction parallel to the winding axis and a second direction perpendicular to the first direction.

3. The electrode assembly conveying tray according to claim 1, in, The base portion has a recessed shape configured to accommodate the electrode assembly.

4. The electrode assembly conveying tray according to claim 1, in, The base portion has a length that is longer than a length of the electrode assembly along the winding axis.

5. The electrode assembly conveying tray according to claim 1, in, The base portion is configured such that the first joint portion accommodated in the first accommodation portion and the second joint portion accommodated in the second accommodation portion do not contact the bottom plate.

6. The electrode assembly conveying tray according to claim 1, in, The support portion is configured such that a bottom surface formed therein does not contact the body portion of the electrode assembly.

7. The electrode assembly conveying tray according to claim 6, in, The support portion supports the electrode assembly at a position lower than a winding axis of the electrode assembly.

8. The electrode assembly conveying tray according to claim 6, in, The supporting portion comprises: a first support portion configured to support a first side of the body portion; and A second support portion is configured to support a second side of the body portion.

9. The electrode assembly conveying tray according to claim 8, in, The first supporting portion and the second supporting portion are configured to be in contact with an outer peripheral surface of the body portion.

10. The electrode assembly conveying tray according to claim 9, in, The first supporting portion and the second supporting portion are configured such that at least a portion thereof has a same radius of curvature as that of the outer peripheral surface of the body portion.

11. The electrode assembly conveying tray according to claim 9, in, The first supporting portion and the second supporting portion are inclined with respect to the bottom surface to have a predetermined angle, and the first supporting portion and the second supporting portion are inclined in directions opposite to each other.

12. The electrode assembly conveying tray according to claim 8, in, The bottom plate includes a plurality of base portions arranged in at least one of a first direction parallel to the winding axis and a second direction perpendicular to the first direction, and The plurality of base portions are arranged such that a pair of base portions adjacent to each other along the second direction are spaced apart by a predetermined distance.

13. The electrode assembly transfer tray according to claim 12, in, The first supporting portion and the second supporting portion are discontinuously formed along the first direction.

14. The electrode assembly transport tray according to claim 13, in, The first supporting portion and the second supporting portion have discontinuous shapes at positions corresponding to the center of the body portion along the first direction to grip an outer peripheral surface of the electrode assembly to lift and lower the electrode assembly.

15. The electrode assembly transfer tray according to claim 1, The electrode assembly transfer tray includes a guide portion configured to prevent the electrode assembly from being separated along an edge of the bottom plate during transfer.

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