Secondary battery packaging paper and secondary battery packaging box

Abstract

The present invention relates to a secondary battery packaging paper and a secondary battery packaging box, and more particularly, to a secondary battery packaging paper and a secondary battery packaging box capable of preventing identification codes of a plurality of cylindrical battery cells accommodated therein from being damaged. In order to achieve the above object, according to an embodiment of the present invention, the secondary battery wrapping paper and the secondary battery packaging box are provided, which form a plurality of accommodation spaces for accommodating a plurality of cylindrical battery cells, and comprise a barrier wall provided with a contact prevention portion, the plurality of cylindrical battery cells each have an identification code printed thereon, and the contact prevention portion is provided so as not to come into contact with the identification code printed on the outer periphery of the accommodated cylindrical battery cell.

Description

Technical Field

[0001] This invention relates to a secondary battery packaging separator and a secondary battery packaging box, and more specifically, to a secondary battery packaging separator and a secondary battery packaging box that can prevent damage to the identification codes of multiple cylindrical secondary batteries contained therein. Background Technology

[0002] A secondary battery is a battery that can be reused by converting chemical energy into electrical energy through a discharge process and by converting electrical energy into chemical energy through a charging process.

[0003] Currently widely used types of secondary batteries include lithium-ion batteries, lithium polymer batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and nickel-zinc batteries. The operating voltage of a single unit of this secondary battery (i.e., a single-cell secondary battery) is approximately 2.5V to 4.5V. Therefore, when a higher output voltage is required, multiple secondary batteries are connected in series to form a battery pack.

[0004] Furthermore, the battery pack is configured by connecting multiple secondary batteries in parallel according to the required charging and discharging capacity of the battery pack. Therefore, the number of secondary batteries included in the battery pack and the type of electrical connection can be set differently according to the required output voltage and / or charging and discharging capacity.

[0005] Cylindrical, rectangular, and pouch-shaped secondary batteries are provided as types of unit secondary batteries. For example... Figure 1 As shown, in the case of a cylindrical secondary battery (10), the cylindrical secondary battery (10) is manufactured by inserting a separator, which serves as an insulator, between the positive and negative electrodes, winding them to form a jelly-roll-shaped electrode assembly (not shown), and inserting it into a cylindrical battery canister (15).

[0006] An identification code (12) is printed on the outer surface of the cylindrical secondary battery (10). Here, the identification code (12) is used to identify and track the secondary battery during the manufacturing, distribution, use, and recycling processes. That is, the identification code (12) indicates the production date, manufacturer, model name, serial number, etc., of the secondary battery during its manufacturing process. Using such an identification code (12), a specific secondary battery can be identified and tracked among multiple secondary batteries. Therefore, it is preferable that the identification code (12) is retained and not erased during the manufacturing, distribution, use, and recycling processes of the secondary battery. The identification code (12) may include a two-dimensional QR code or a barcode, etc. Figure 1 As shown.

[0007] Identification codes (12) can be printed immediately after the manufacturing and inspection of the cylindrical secondary battery (10) are completed.

[0008] Figure 2This is a perspective view schematically showing the appearance of the secondary battery packaging box. Then, Figure 3 This is a partial enlarged view schematically showing an enlarged view of a portion of the cylindrical secondary battery (10).

[0009] The manufactured cylindrical secondary batteries can be housed in a packaging box (20). The cylindrical secondary batteries can be transferred using the packaging box between the secondary battery manufacturing process and the battery pack manufacturing process. The secondary battery manufacturing process and the battery pack manufacturing process can be performed with a time difference and in different spaces. Of course, the main components of the processes can also be different. Therefore, the packaging box allows the secondary batteries to be safely housed for storage or relocation.

[0010] As shown in the figure, the separator (25) is disposed inside the packaging box (20), and each secondary battery can be separated from each other and accommodated by the separator. That is, multiple separators are provided such that they intersect each other, so that the secondary batteries can be individually inserted and accommodated in the accommodating space formed by the separators.

[0011] In the secondary battery packaging box (20), the plurality of cylindrical secondary batteries (10) may frequently shake or move due to external impacts during transportation. Of course, spacers prevent the secondary batteries from directly contacting or colliding with each other, but contact and friction between the spacers and the outer surfaces of the secondary batteries are inevitable. At this time, the identification code (12) printed on the outer surface of the cylindrical secondary battery (10) and the secondary battery packaging spacers (25) may come into contact with each other, and this friction may occur frequently.

[0012] Due to this friction, such as Figure 3 As shown, the separation or damage of a portion of the identification code occurs frequently. That is, part of the identification code is erased or only a trace remains, raising concerns that it may not be able to perform its function as a normal identification code. Therefore, there are problems with subsequent tracking and management of the secondary battery.

[0013] For example, Korean Patent Publication No. 2015-0146180 (hereinafter referred to as the "Prior Patent") discloses: a method for packaging secondary battery cells, which includes a cell storage step of accommodating a plurality of secondary battery cells in a receiving groove of a tray; and a secondary battery cell packaging.

[0014] Existing patents fail to recognize the problem of identification code damage caused by friction during the contact process between the identification code printed on the outer surface of the secondary battery and the inner surface of the receiving groove of the unit containing the tray, and do not disclose a structure for preventing damage to the identification code. Such existing patents still cannot solve the problem of damage to the printed identification code of the secondary battery during delivery.

[0015] Therefore, there is a need to find a method that can conveniently house cylindrical secondary batteries in a packaging box and safely transfer them, especially preventing damage to the identification code of the secondary batteries during transfer. Summary of the Invention

[0016] Technical issues

[0017] The present invention aims to solve the common problem of damage to the identification codes of cylindrical battery cells contained during delivery.

[0018] By way of one example of the present invention, it is intended to provide a secondary battery packaging separator and packaging box that can prevent damage to the identification codes of multiple cylindrical battery cells stored thereon, thereby ensuring the safety and reliability of the secondary batteries during the manufacturing, distribution, use and recycling of the secondary batteries.

[0019] By way of one example of the present invention, it is intended to provide a secondary battery packaging separator and packaging box that can be easily delivered without damaging the identification code, while existing protective strips for preventing damage to the identification code are not further applied to the cylindrical battery cells.

[0020] By way of one example of the present invention, it is intended to provide a secondary battery packaging separator and packaging box that can prevent damage to the identification code, while maintaining the containment performance of the cylindrical secondary battery with only simple modifications to the shape or structure of the separator.

[0021] Technical solution

[0022] To achieve the above objectives, according to an example of the present invention, a secondary battery packaging box can be provided, characterized in that it comprises: a box body having an external shape forming an internal space; and a partition wall disposed in the box body to divide the internal space into a plurality of receiving spaces, each of which a plurality of cylindrical battery cells are received, wherein the partition wall is provided with a contact-prevention portion, the contact-prevention portion being configured not to contact an identification code printed on the outer peripheral surface of the cylindrical battery cells received in the receiving spaces.

[0023] The position and height of the contact prevention portion can be set differently depending on the height of the identification code's positioning point and the height of the identification code itself when the cylindrical battery cell is housed in the receiving space. The height of the identification code's positioning point within the cylindrical battery cell and the height of the identification code itself can vary. Of course, the height of the cylindrical battery cell itself can also vary. Therefore, the position and height of the contact prevention portion can be flexibly changed.

[0024] The contact prevention portion may include a perforated portion formed in the partition wall, wherein the perforated portion may be formed at a height corresponding to the identification code. The perforated portion may be formed in the form of a through window with a rectangular shape.

[0025] The contact prevention portion may include a recessed portion formed in the partition wall. The recessed portion may be rectangular in shape. Since the thickness of the partition wall in the recessed portion is less than the thickness of the partition wall in other portions, the recessed portion can be easily formed.

[0026] Preferably, the partition wall is configured such that the outer surface of the cylindrical battery cell is allowed to contact the inner surface of the partition wall, and the outer surface of the cylindrical battery cell is prevented from partially contacting the inner surface of the partition wall by the contact. That is, by forming a step in the partition wall, it is preferable that while allowing contact with the outer surface of the cylindrical battery cell, contact with some areas (i.e., the printed surface) is restricted.

[0027] The partition wall can be formed from paper material. By forming the partition wall in the form of corrugated cardboard, self-damping and ease of manufacture can be ensured.

[0028] The partition walls may include: multiple horizontal partition walls; and multiple vertical partition walls, which are intersected and connected to the horizontal partition walls to form multiple receiving spaces in a grid shape. The partition walls may be integrally formed with the box body and may be inserted into the box body while detached from it.

[0029] A plurality of upper grooves formed at predetermined intervals may be formed in the horizontal partition wall, and a plurality of lower grooves formed at predetermined intervals may be formed in the vertical partition wall, the plurality of lower grooves being inserted into and connected to each of the plurality of upper grooves.

[0030] The upper groove can be formed by recessing downward from the upper end of the horizontal partition wall, and the lower groove can be formed by recessing upward from the lower end of the vertical partition wall.

[0031] The length of the lower groove can be longer than the length of the upper groove.

[0032] The perforated portion of the horizontal partition wall can be formed between the upper groove and the adjacent upper groove, and the perforated portion of the vertical partition wall can be formed between the lower groove and the adjacent lower groove.

[0033] The upper portion of the upper groove may have a wider width than the lower portion of the upper groove.

[0034] The horizontal and vertical partition walls that intersect each other may include: planar portions, each planar portion forming one side of the accommodating space of the cylindrical battery cell; and corner portions, the corner portions being formed by the planar portions of the horizontal partition walls and the planar portions of the vertical partition walls.

[0035] The contact prevention portion may include a protective strip disposed on the partition wall, and the protective strip may be configured such that the sides other than the printed surface with the identification code on the outer peripheral surface of the cylindrical battery cell make contact first.

[0036] The protective strip can be configured to extend horizontally in both the higher and lower sections corresponding to the identification code.

[0037] The secondary battery packaging box may further include an outer protective sheet positioned to be in close contact with the inner surface of the side wall of the box body, and the outer protective sheet includes a plurality of openings positioned at a height corresponding to the identification code of each of the plurality of cylindrical battery cells contained therein.

[0038] The secondary battery packaging box may further include an outer protective sheet positioned to be in close contact with the inner surface of the sidewall of the box body, and a support band formed on the outer protective sheet, the support band extending horizontally at portions higher and lower than the height corresponding to each identification code of the plurality of cylindrical battery cells contained therein.

[0039] The outer protective sheet can be a structure to be added to or attached to the inner surface of the box. The outer protective sheet can also be made of corrugated cardboard.

[0040] The housing may include a plurality of protective strips disposed on the sidewalls to avoid contact with identification codes printed on the outer peripheral surface of cylindrical battery cells housed in the housing space, wherein the protective strips may be formed to extend horizontally in each of a portion higher and a portion lower than the height corresponding to the identification code.

[0041] To achieve the above objectives, according to an example of the present invention, a secondary battery packaging separator is provided, the secondary battery packaging separator comprising partition walls forming a plurality of receiving spaces, wherein a plurality of cylindrical battery cells having printed identification codes are each received in the plurality of receiving spaces, and the secondary battery packaging separator is provided with contact prevention portions that do not come into contact with the identification codes printed on the outer peripheral surface of the received cylindrical battery cells.

[0042] To achieve the above objectives, according to an example of the present invention, a secondary battery packaging spacer can be provided, which is inserted into and installed in a housing to form a plurality of receiving spaces for accommodating a plurality of cylindrical battery cells, the housing having an external shape forming an internal space, characterized in that it includes: a plurality of horizontal partition walls; and a plurality of vertical partition walls disposed across the horizontal partition walls to form a plurality of receiving spaces in a grid shape, wherein contact prevention portions formed on the horizontal and vertical partition walls are configured to not contact identification codes printed on the outer peripheral surface of the cylindrical battery cells when the cylindrical battery cells are contained.

[0043] The partition or divider can be manufactured in a state separate from the box body of the packaging box to be inserted and installed inside the box body.

[0044] The height of the contact prevention portion can be set differently depending on the height of the identification code.

[0045] The contact prevention portion may include a perforated portion formed in the partition wall, wherein the perforated portion may be formed at a height corresponding to the identification code.

[0046] The partition wall may include multiple horizontal partition walls; and multiple vertical partition walls, which are intersected and connected with the multiple horizontal partition walls to form multiple receiving spaces in a grid shape.

[0047] The horizontal partition wall may be provided with a plurality of upper grooves formed at predetermined intervals, and the vertical partition wall may be provided with a plurality of lower grooves formed at predetermined intervals and inserted into and connected to each of the plurality of upper grooves.

[0048] The secondary battery packaging separator is characterized in that the position and height of the contact prevention portion are set differently according to the height of the identification code being positioned and the height of the identification code when the cylindrical battery cell is housed in the housing space.

[0049] Preferably, the position of the contact prevention portion is formed to correspond to the position of the identification code, and the height of the contact prevention portion is greater than the height of the identification code.

[0050] The contact prevention portion may include a perforated portion formed in the partition wall.

[0051] Preferably, the contact prevention portion includes a recessed portion formed in the partition wall, and the recessed portion is formed such that one part of the partition wall has a thinner thickness than the other part.

[0052] Preferably, the height of the contact-prevention portion is less than half the height of the entire partition wall. Therefore, it is possible to prevent the rigidity of the partition wall from being reduced due to the contact-prevention portion. On the other hand, the width of the contact-prevention portion can be greater than half the width of the partition wall in the receiving portion that accommodates a cylindrical battery cell. Even if the entire packaging box tilts to one side, causing the partition wall to break, contact between the identification code and the partition wall can be effectively prevented.

[0053] Beneficial effects

[0054] The present invention aims to solve the common problem of damage to the identification codes of cylindrical battery cells contained during delivery.

[0055] According to one example of the present invention, a secondary battery packaging separator and packaging box can be provided, which can prevent damage to the identification codes of multiple cylindrical battery cells stored therein, thereby ensuring the safety and reliability of the secondary battery during the manufacturing, distribution, use and recycling processes of the secondary battery.

[0056] By way of one example of the present invention, a secondary battery packaging separator and packaging box can be provided that can be easily delivered without damaging the identification code, while existing protective strips for preventing damage to the identification code are not further applied to the cylindrical battery cells.

[0057] By way of an example of the present invention, a secondary battery packaging separator and packaging box can be provided that can prevent damage to the identification code, while maintaining the containment performance of the cylindrical secondary battery with only simple modifications to the shape or structure of the separator.

[0058] By way of an example of the present invention, a secondary battery packaging separator and packaging box can be provided, which can effectively prevent damage to the identification code by easily forming perforated or recessed portions in the partition walls or separators dividing the interior of the packaging box. Attached Figure Description

[0059] Figure 1 It is a perspective view schematically showing the appearance of a cylindrical battery cell using conventional technology.

[0060] Figure 2 This is a perspective view schematically showing the appearance of a conventional secondary battery packaging box.

[0061] Figure 3 This is a partial enlarged view schematically showing the enlarged appearance of a portion of a cylindrical battery cell using conventional technology.

[0062] Figure 4 This is a perspective view schematically illustrating the appearance of a secondary battery packaging separator according to an example of the present invention.

[0063] Figure 5This is a front view schematically showing the appearance of the horizontal partition wall of a secondary battery packaging separator according to an example of the present invention.

[0064] Figure 6 This is a side view schematically illustrating the appearance of the vertical partition wall of a secondary battery packaging separator according to an example of the present invention.

[0065] Figure 7 This is a perspective view schematically showing the appearance of a secondary battery packaging box according to an example of the present invention.

[0066] Figure 8 This is a partially enlarged view schematically illustrating a portion of the secondary battery packaging separator and a cylindrical battery cell according to an example of the present invention.

[0067] Figure 9 This is a front view schematically illustrating the appearance of the horizontal partition wall of a secondary battery packaging separator according to another example of the present invention.

[0068] Figure 10 This is a side view schematically illustrating the appearance of the vertical partition wall of a secondary battery packaging separator according to another example of the present invention.

[0069] Figure 11 This is a schematic front view showing the appearance of the outer protective sheet of a secondary battery packaging box according to another example of the invention.

[0070] Figure 12 This is a schematic front view showing the appearance of the outer protective sheet of a secondary battery packaging box according to another example of the invention.

[0071] Figure 13 This is a front view schematically showing the appearance of the inner surface of the side wall of a secondary battery packaging box according to another example of the present invention. Detailed Implementation

[0072] In the following, a bag forming apparatus according to an example of the present invention will be described in detail with reference to the accompanying drawings.

[0073] Furthermore, regardless of the reference numerals used, identical or corresponding parts are given by the same or similar reference numerals, and their repeated descriptions will be omitted. In addition, for ease of interpretation, the size and shape of each component shown in the figures may be enlarged or reduced.

[0074] Figure 4 This is a perspective view schematically showing the appearance of a secondary battery packaging separator (100) according to an example of the present invention. Figure 5 This is a front view schematically showing the appearance of the horizontal partition wall (111) of a secondary battery packaging separator (100) according to an example of the present invention. Figure 6This is a side view schematically showing the appearance of the vertical partition wall (112) of a secondary battery packaging separator (100) according to an example of the present invention. Figure 7 This is a perspective view schematically showing the appearance of a secondary battery packaging box (1000) according to an example of the present invention. Then, Figure 8 This is a partial enlarged view schematically showing a portion of the secondary battery packaging separator (100) and the cylindrical battery cell (10) according to an example of the present invention.

[0075] First, refer to Figures 4 to 8 The description includes a secondary battery packaging box (1000) containing a secondary battery packaging separator (100).

[0076] Specifically, the secondary battery packaging box (1000) includes a box body (200). The box body (200) may have an internal space capable of accommodating multiple cylindrical battery cells (10). It may have an external shape forming such an internal space. For example, the secondary battery packaging box (1000) may have a cubic external shape. For example, the box body (200) may have a front side wall (210), a rear side wall (220), a left side wall (230), a right side wall (240), a top wall (250), and a bottom wall (260). The box body (200) may include, for example, a paper material. However, it is not necessarily limited to this material, and the box body (200) may be made of an electrically insulating material. For example, the box body (200) may include an electrically insulating plastic material.

[0077] A secondary battery packaging box (1000) according to an example of the present invention may include partition walls (110). For example, the secondary battery packaging box (1000) of the present invention may include partition walls (110), wherein a plurality of horizontal partition walls (111) and a plurality of vertical partition walls (112) are connected to each other.

[0078] Specifically, partition walls (110) can be provided to form multiple receiving spaces (S) for accommodating each of a plurality of cylindrical battery cells (10), on which identification codes (12) are printed. For example, the plurality of receiving spaces (S) can have a grid shape in a plane. That is, a receiving space (S) can be an approximately cubic space with dimensions capable of accommodating one cylindrical battery cell (10).

[0079] Additionally, the partition wall (110) may be provided with a contact prevention portion (115). The contact prevention portion (115) may be a portion configured to not contact the identification code (12) printed on the outer peripheral surface of the housed cylindrical battery cell (10). For example, the contact prevention portion (115) may be located on the upper portion of the partition wall (110). However, the contact prevention portion (115) is not limited to such a positional feature, and it may be set according to the position of the identification code (12) of the cylindrical battery cell (10).

[0080] Here, the identification code (12) is used to identify and track the cylindrical battery cell (10) during the manufacturing, distribution, use, and recycling processes. For example, the identification code (12) may include information such as the production date, manufacturer, model name, and serial number of the cylindrical battery cell (10) during the manufacturing process. For example, the identification code (12) may be indicated in the format of a 2D mark, which is a two-dimensional barcode. Here, 2D marks have the advantage of being able to store a larger amount of data than 1D (one-dimensional) barcodes. Alternatively, the identification code (12) may be indicated in the format of a QR code.

[0081] Therefore, the secondary battery packaging box (1000) of the present invention includes a partition wall (110) provided with a contact prevention portion (115), which is configured not to contact the identification code (12) printed on the outer peripheral surface of the cylindrical battery cell (10) contained therein. Thus, even if the secondary battery packaging box (1000) containing multiple cylindrical battery cells (10) shakes or moves due to external impact during delivery, the identification code (12) and the partition wall (110) can remain in contact, thereby effectively preventing damage to the identification code (12).

[0082] Furthermore, the height of the contact prevention portion (115) can be set differently depending on the height of the identification code (12). That is, the height (vertical width) of the contact prevention portion (115) at the position where the central portion of the contact prevention portion (115) faces the central portion of the identification code (12) can be set according to the height of the identification code (12). For example, since the cylindrical battery cell (10) can move up and down during transportation due to external impact within the housing space (S), it is preferable that the vertical width of the contact prevention portion (115) is greater than the vertical width of the identification code (12).

[0083] Furthermore, the height of the contact prevention portion (115) can be set according to the height of the identification code (12) on the outer surface of the cylindrical battery cell (10). That is, the contact prevention portion (115) can be formed at a position corresponding to the identification code (12) of the cylindrical battery cell (10), or at a position slightly higher or slightly lower than the corresponding position, or at a position slightly higher and slightly lower than the corresponding position. For example, when the identification code (12) of the cylindrical battery cell (10) is positioned above the middle in the vertical direction, the contact prevention portion (115) can be formed at the upper part based on the middle in the vertical direction of the partition wall (110).

[0084] Therefore, the secondary battery packaging box (1000) of the present invention can effectively prevent damage to the identification code (12) by setting the height of the contact prevention part (115) differently according to the height of the identification code (12).

[0085] Furthermore, the contact prevention portion (115) may include a perforated portion (115a) formed in the partition wall (110). The perforated portion (115a) may be formed by a stamping process of stamping a portion of the partition wall (110). During the stamping process, a punch and a die may be used to stamp a portion of the partition wall (110) to form the perforated portion (115a). In this case, the partition wall (110) may include paper material. However, the material of the partition wall (110) is not necessarily limited to paper, and may include electrically insulating materials. For example, the electrically insulating material may be a plastic material. However, it is preferred to use corrugated cardboard material to manufacture the partition wall and the packaging box, which can provide advantages such as reduced manufacturing costs and shock absorption properties.

[0086] For example, the perforated portion (115a) may have a size corresponding to the identification code (12) of the cylindrical battery cell (10), or a size larger than the identification code (12). The perforated portion (115a) may be formed at a height corresponding to the identification code (12). For example, the perforated portion (115a) may have a shape such as circular, quadrilateral, or triangular. However, the shape of the perforated portion (115a) is not necessarily limited to these shapes, and any shape that can effectively avoid contact based on the shape of the identification code (12) can be applied.

[0087] Therefore, the secondary battery packaging box (1000) of the present invention can effectively prevent the identification code (12) of the cylindrical battery cell (10) and the partition wall (110) from contacting each other by including a perforated portion (115a), the perforated portion (115a) being formed by perforating a portion of the partition wall (110) and being formed at a height corresponding to the identification code (12) as a contact prevention portion (115).

[0088] For example, the partition wall (110) may include a plurality of horizontal partition walls (111) and a plurality of vertical partition walls (112). Specifically, the horizontal partition walls (111) may be configured to extend horizontally (X-axis direction) and stand upright in the vertical direction (Z-axis direction) within the interior space of the housing (200). The vertical partition walls (112) may be configured to extend horizontally (Y-axis direction) and stand upright in the vertical direction (Z-axis direction) within the interior space of the housing (200). The plurality of vertical partition walls (112) and the plurality of horizontal partition walls (111) may be connected in such a way that they intersect in the horizontal and vertical directions. That is, the plurality of vertical partition walls (112) may be assembled with the plurality of horizontal partition walls (111) to form a plurality of grid-like receiving spaces (S).

[0089] For example, preferably, the planar surface of each receiving space (S) has a quadrilateral shape, especially a square shape. In this case, it is preferable that the planar surface of the cylindrical battery cell (10) has a circular shape. Therefore, due to the structural characteristics of the receiving space, the cylindrical battery cell (10) can rotate and move within the receiving space. However, even if the cylindrical battery cell rotates due to the square receiving space and the shape of the cylindrical battery cell (10), the identification code (12) does not necessarily come into contact with the partition wall (110) due to the contact prevention portion (115).

[0090] Reference Figure 5 and Figure 6 The horizontal partition wall (111) may be provided with a plurality of upper grooves (113) formed at predetermined intervals. The vertical partition wall (112) may be provided with a plurality of lower grooves (114) formed at predetermined intervals. The plurality of lower grooves (114) are respectively inserted into the plurality of upper grooves (113), thereby the horizontal partition wall (111) and the vertical partition wall (112) can be connected to each other.

[0091] Additionally, the upper groove (113) can be formed by recessing downward from the upper end of the horizontal partition wall (111). The lower groove (114) can be formed by recessing upward from the lower end of the vertical partition wall (112). The length of the lower groove (114) in the vertical direction can be longer than the length of the upper groove (113) in the vertical direction.

[0092] For example, the perforated portion (115a) of the horizontal partition wall (111) may be formed between an upper groove (113) and an adjacent upper groove (113). The perforated portion (115a) of the vertical partition wall (112) may be formed between a lower groove (114) and an adjacent lower groove (114).

[0093] Furthermore, the upper portion of the upper groove (113) can have a width (P) that is wider than the lower portion of the upper groove (113). That is, the upper groove (113) has an upper structure where the width (P) is wider than the width of the lower portion, thereby making it easier to insert the vertical partition wall (112) into the upper groove (113) of the horizontal partition wall (111). In other words, by forming a wider upper groove (113), it is easier to introduce the lower groove (114) of the vertical partition wall (112) into the upper portion of the upper groove (113). Therefore, the introduced vertical partition wall (112) moves downward along the upper groove (113) of the horizontal partition wall (111). Therefore, the secondary battery packaging box (1000) of the present invention has the advantage of being able to easily and quickly assemble the horizontal partition wall (111) and the vertical partition wall (112).

[0094] Furthermore, the horizontal partition wall (111) and the vertical partition wall (112) that intersect each other include a planar portion (116). The planar portion (116) can be configured to form one side of the receiving space (S) for the cylindrical battery cell (10). The corner portion (117) can be a structure formed by making the planar portions (116) of the horizontal partition wall (111) and the planar portions (116) of the vertical partition wall (112) meet each other.

[0095] Figure 9 This is a front view schematically illustrating the appearance of the horizontal partition wall (111A) of a secondary battery packaging separator according to another example of the invention. Then, Figure 10 This is a side view schematically illustrating the appearance of the vertical partition wall (112A) of a secondary battery packaging separator according to another example of the present invention.

[0096] exist Figure 9 and Figure 10 as well as Figure 1 In, with Figure 5 and Figure 6 Unlike the secondary battery packaging box (1000), a secondary battery packaging box according to another example of the invention does not have any perforated portions (115a) formed therein, but may instead include a protective strip (115b). However, the remaining construction of this secondary battery packaging box may be similar to... Figure 5 and Figure 6 The secondary battery packaging box (1000) has a similar or identical structure.

[0097] For example, the partition wall (110) of a secondary battery packaging separator according to another example of the present invention may include a horizontal partition wall (111A) and a vertical partition wall (112A). For example, the secondary battery packaging separator may be manufactured by connecting the horizontal partition wall (111A) and the vertical partition wall (112A) to each other.

[0098] Specifically, the contact prevention portion (115) may include a protective strip (115b) disposed on the partition wall (110). For example, as in Figure 9 and Figure 10 In this configuration, a protective strip (115b) can be formed on each of the horizontal partition wall (111) and the vertical partition wall (112). For example, the protective strip (115b) can be a strip extending horizontally along the surface of each of the horizontal partition wall (111) and the vertical partition wall (112). The protective strip (115b) can have a predetermined thickness in the vertical direction. The length of the protective strip (115b) in the horizontal direction can correspond to the length of the identification code (12) of the cylindrical battery cell (10) in the horizontal direction, or it can be longer than that length.

[0099] Furthermore, a protective strip (115b) can be provided so that the outer peripheral surface of the cylindrical battery cell (10), other than the printed surface on which the identification code (12) is printed, contacts first. That is, the protective strip (115b) supports the outer surface of the cylindrical battery cell (10) on which the identification code (12) is not printed, which prevents the identification code (12) from contacting the outer surface of the outer protective sheet (300). In other words, the protective strip (115b) supports the outer surface of the cylindrical battery cell (10), which allows the identification code (12) and the separator wall (110) to remain spaced apart from each other. Therefore, the protective strip (115b) can maintain the spacing between the cylindrical battery cell (10) and the separator wall (110) before the identification code (12) of the cylindrical battery cell (10) contacts the separator wall (110).

[0100] Additionally, the protective strip (115b) can be formed on each of the portions that are higher and lower than the height corresponding to the identification code (12). For example, as Figure 9 As shown, ten protective strips (115b) can be formed at a height higher than the height corresponding to the identification code (12), and the remaining ten protective strips (115b) can be formed at a height lower than the height corresponding to the identification code (12). That is, the protective strips (115b) can be formed at a height that does not contact the identification code (12) of the cylindrical battery cell (10) housed in the housing space (S). The protective strips (115b) can have a shape that extends in the horizontal direction. At this time, the protective strips (115b) can have a shape that protrudes a predetermined thickness from the surface of the partition wall (110) toward the cylindrical battery cell (10).

[0101] Therefore, a secondary battery packaging box (1000) according to an example of the present invention can maintain an appropriate spacing distance between the cylindrical battery cell (10) and the partition wall (110) because the contact prevention part (115) includes a protective strip (115b), thereby effectively preventing the identification code (12) of the cylindrical battery cell (10) from contacting the partition wall (110).

[0102] Figure 11 This is a schematic front view showing the appearance of the outer protective sheet (300) of a secondary battery packaging box according to another example of the present invention.

[0103] and Figure 7 and Figure 8 Let's refer to each other. Figure 11 According to another example of the invention, the secondary battery packaging box may further include an outer protective sheet (300). The outer protective sheet (300) may be positioned to be in close contact with the inner surface of the sidewall of the box body (200). For example, four outer protective sheets (300) may be provided to be in close contact with the inner surfaces of the left sidewall (230), right sidewall (240), front sidewall (210) and rear sidewall (220) of the box body (200), respectively.

[0104] Furthermore, the outer protective sheet (300) may include a plurality of openings (310). The plurality of openings (310) may be positioned at a height corresponding to the identification code (12) of each of the plurality of cylindrical battery cells (10) contained therein. For example, in the plurality of openings (310) of the outer protective sheet (300), when the identification code (12) of each of the plurality of cylindrical battery cells (10) positioned facing the left side wall (230), right side wall (240), front side wall (210) and rear side wall (220) of the housing (200) is formed at a position higher than the middle of the cylindrical battery cell (10) in the vertical direction, the plurality of openings (310) may be formed at a position higher than the middle of the side wall of the housing (200) in the vertical direction.

[0105] Therefore, the secondary battery packaging box (1000) of the present invention also includes an outer protective sheet (300) having a plurality of openings (310) formed therein, and by including the outer protective sheet (300) having openings (310) formed therein on the partition wall (110) and formed at a height corresponding to the identification code (12), the identification code (12) formed on the plurality of cylindrical battery cells (10) can be effectively prevented from contacting the inner surface of the side wall of the secondary battery packaging box (1000).

[0106] Figure 12 This is a schematic front view showing the appearance of the outer protective sheet (300A) of a secondary battery packaging box according to another example of the present invention.

[0107] and Figure 7 and Figure 8 Let's refer to each other. Figure 12 ,and Figure 11 Unlike the outer protective sheet (300), a secondary battery packaging box according to another example of the invention may have multiple support strips (320) formed on the outer protective sheet (300A) instead of multiple perforated portions (115a). Specifically, the outer protective sheet (300A) may be positioned to be in close contact with the inner surface of the sidewall of the box body (200).

[0108] In the outer protective sheet (300A), the support strip (320) can be formed at a height higher and lower than the corresponding height of each of the identification codes (12) of the plurality of cylindrical battery cells (10) housed therein. That is, the support strip (320) can be formed at a height that does not contact the identification codes (12) of the cylindrical battery cells (10) housed in the housing space (S).

[0109] The support strip (320) may have a shape extending horizontally along the outer surface of the outer protective sheet (300A). The support strip (320) may have a predetermined thickness such that the identification code (12) of the cylindrical battery cell (10) does not contact the outer surface of the outer protective sheet (300A). That is, the support strip (320) supports the outer surface of the cylindrical battery cell (10) on which the identification code (12) is not printed, which prevents the identification code (12) from contacting the outer surface of the outer protective sheet (300A). For example, as Figure 12 As shown, two support strips (320) can be formed on the upper portion of the outer protective sheet (300A) facing the cylindrical battery cell (10). The two support strips (320) can be formed at positions higher and lower than the identification code (12).

[0110] Therefore, the secondary battery packaging box (1000) of the present invention also includes an outer protective sheet (300A) in which a support strip (320) is formed, thereby effectively preventing the identification code (12) formed on the plurality of cylindrical battery cells (10) from contacting the inner surface of the side wall of the secondary battery packaging box 1000.

[0111] Figure 13 This is a front view schematically showing the appearance of the inner surface of the side wall of a secondary battery packaging box according to another example of the present invention.

[0112] and Figure 7 and Figure 8 Let's refer to each other. Figure 13 ,and Figure 7 Unlike the secondary battery packaging box (1000), the secondary battery packaging box according to another example of the invention may have a plurality of protective strips (250a) formed on the inner surface of the sidewalls. For example, as Figure 13 As shown, the plurality of protective strips (250a) can be formed in a horizontal direction parallel to each other on the inner surface of the rear sidewall (220). In addition, the plurality of protective strips (250a) can be formed on each of the front sidewall (210), left sidewall (230) and right sidewall (240) of the housing (200).

[0113] Specifically, the plurality of protective strips (250a) can be configured not to contact the identification code (12) printed on the outer peripheral surface of the cylindrical battery cell (10) housed in the housing space (S). That is, the protective strips (250a) support the outer surface of the cylindrical battery cell (10) on which the identification code (12) is not printed, which prevents the identification code (12) from contacting the inner surface of the sidewall of the housing (200). For example, the protective strips (250a) can be formed on each of the left sidewall (230), right sidewall (240), front sidewall (210), and rear sidewall (220) of the housing (200).

[0114] The protective strip (250a) can be formed to extend horizontally in both the portion higher and the portion lower than the height corresponding to the identification code (12). That is, the protective strip (250a) can be formed at a height that does not contact the identification code (12) of the cylindrical battery cell (10) housed in the housing space (S).

[0115] At the same time, refer to again Figures 4 to 8 This application may provide a secondary battery packaging separator (100) according to an example of the present invention.

[0116] Furthermore, the secondary battery packaging separator (100) of the present invention may include a partition wall (110). Here, the partition wall (110) may have a similar or identical structure to the partition wall (110) in the aforementioned secondary battery packaging box (1000). Specifically, the partition wall (110) may be disposed in the internal space of the box body (200). When the partition wall (110) is connected to the internal space of the box body (200), it may be configured to divide the internal space into a plurality of receiving spaces (S), each of the plurality of cylindrical battery cells (10) being received in the plurality of receiving spaces. For example, the plurality of receiving spaces (S) may have a grid shape in a plane.

[0117] Additionally, the partition wall (110) may include a contact-prevention portion (115). Specifically, the contact-prevention portion (115) may be a part of the partition wall (110) configured not to contact the identification code (12) printed on the outer peripheral surface of the cylindrical battery cell (10) housed in the housing space (S). For example, the contact-prevention portion (115) may be located on the upper portion of the partition wall (110). However, the contact-prevention portion (115) is not limited to such a positional feature and may be configured according to the position of the identification code (12) of the cylindrical battery cell (10).

[0118] Therefore, the secondary battery packaging box (100) of the present invention includes a partition wall (110) provided with a contact prevention portion (115) which is configured not to contact the identification code (12) printed on the outer peripheral surface of the cylindrical battery cell (10) contained therein. Thus, even if the plurality of cylindrical battery cells (10) contained in the secondary battery packaging box (1000) shake or move due to external impact during delivery, the identification code (12) and the partition wall (110) can remain in contact, thereby effectively preventing damage to the identification code (12).

[0119] Furthermore, the height of the contact prevention part (115) can be set differently depending on the height of the identification code (12). A more detailed description of the contact prevention part (115) is provided below for the description in the secondary battery packaging box (1000).

[0120] Furthermore, the contact prevention portion (115) may include a perforated portion (115a) formed in the partition wall (110), wherein the perforated portion (115a) may be formed at a height corresponding to the identification code (12). A more specific description of the perforated portion (115a) is provided above in the secondary battery packaging box (1000).

[0121] Furthermore, the partition wall (110) may include a plurality of horizontal partition walls (111) and a plurality of vertical partition walls (112), the plurality of vertical partition walls (112) being intersected with the horizontal partition walls (111) to form a plurality of receiving spaces (S) in a grid shape. A more specific description of the horizontal partition walls (111) and the vertical partition walls (112) is replaced by the above description in the secondary battery packaging box (1000).

[0122] Furthermore, a plurality of upper grooves (113) formed at predetermined intervals can be formed in the horizontal partition wall (111).

[0123] Additionally, a plurality of lower grooves (114) formed at predetermined intervals and inserted and connected to each of the plurality of upper grooves (113) may be formed in the vertical partition wall (112).

[0124] Furthermore, the upper groove (113) can be formed by recessing downward from the upper end of the horizontal partition wall (111).

[0125] Furthermore, the lower groove (114) can be formed by recessing upward from the lower end of the vertical partition wall (112).

[0126] Moreover, the length of the lower groove (114) can be longer than the length of the upper groove (113).

[0127] A more detailed description of the upper groove (113) and the lower groove (114) is replaced by the above description in the secondary battery packaging box (1000).

[0128] Furthermore, the perforated portion (115a) of the horizontal partition wall (111) can be formed between the upper groove (113) and the adjacent upper groove (113).

[0129] Furthermore, the perforated portion (115a) of the vertical partition wall (112) may be formed between the lower groove (114) and the adjacent lower groove (114). A more specific description of the perforated portion (115a) of the horizontal partition wall (111) or the vertical partition wall (112) is replaced by the above description in the secondary battery packaging box (1000).

[0130] Furthermore, the upper portion of the upper groove (113) may have a wider width (P) than the lower portion of the upper groove (113). A more specific description of the upper groove (113) is provided above in the secondary battery packaging box (1000).

[0131] Furthermore, the horizontal partition wall (111) and the vertical partition wall (112) that intersect each other include a planar portion (116) and a corner portion (117). The planar portion (116) each forms one side of the accommodating space (S) of the cylindrical battery cell (10), and the corner portion (117) is formed by the planar portion (116) of the horizontal partition wall (111) and the planar portion (116) of the vertical partition wall (112).

[0132] Additionally, the contact prevention portion (115) may include a protective strip (115b) disposed on the partition wall (110). The protective strip (115b) may be provided such that the sides of the outer peripheral surface of the cylindrical battery cell (10) other than the printed surface on which the identification code (12) is printed first come into contact.

[0133] Furthermore, the protective strip (115b) may be provided as extending horizontally in both the portion higher and the portion lower than the height corresponding to the identification code (12). A more specific description of the protective strip (115b) is provided below for the protective strip (115b) of the secondary battery packaging box (1000).

[0134] In the following description, the invention will be illustrated in more detail by way of examples, but the invention is not limited to these examples. Examples according to the invention can be modified in various other forms, and the scope of the invention should not be construed as limited to the examples described below. The examples of the invention are provided to explain the invention more fully to those skilled in the art.

[0135] As an example, the perforated portion described above can be replaced by a recessed portion. The perforated portion can prevent contact between the identification code and the partition wall by forming a through window in a part of the partition wall. If the partition wall is thick enough, a recessed portion can also prevent contact between the identification code and the partition wall. As an example, the thickness of the partition wall in the recessed portion can be less than the thickness of the partition walls in other portions.

[0136] There are concerns about the cylindrical battery cells being rotated or moved vertically within the enclosure. Of course, vertical movement may be very limited. Therefore, it is preferable that the height of the perforated or recessed portion is greater than the height of the identification code. Additionally, preferably, the width of the perforated or recessed portion within a single enclosure is less than the width of the partition wall, and more preferably, it is greater than half the width of the partition wall. This is because a portion of the partition wall may break when the entire enclosure is tilted to one side. Even in this case, contact between the identification code and the perforated or recessed portion can be effectively prevented.

[0137] <Example>

[0138] An example of a secondary battery packaging box according to the present invention includes a... Figures 4 to 7 The components of the secondary battery packaging box (1000) shown are identical. Specifically, the example secondary battery packaging box (1000) includes a box body (200) and horizontal partition walls (111) and vertical partition walls (112), which divide the interior space of the box body (200) into 100 receiving spaces. In this case, the horizontal partition walls (111) and vertical partition walls (112) have perforated portions (115a) formed at the height corresponding to the identification code (12) of the cylindrical battery cell (10) as contact prevention portions. Then, after 100 cylindrical battery cells (10) are received in the example secondary battery packaging box, the box body is sealed. In this way, two secondary battery packaging boxes are prepared.

[0139] <Comparison Example>

[0140] In the secondary battery packaging box of the comparative example according to the present invention, the components are arranged in the same manner as the example secondary battery packaging box, except that no perforations are formed in the horizontal and vertical partition walls.

[0141] <Test Example>

[0142] To determine the performance of each of the example and comparative examples, the damage prevention characteristics of the identification codes during the movement of the secondary battery packaging were evaluated. The test method was performed according to the vibration test standard T3 (Vibration Test) corresponding to UN38.3. That is, the vibration test conditions were as follows: a vibration test was conducted for 15 minutes, performed in a sinusoidal sweep mode, with the vibration frequency starting at 7 Hz and increasing to 120 Hz, then decreasing back to 7 Hz. After the test, the identification codes of 200 cylindrical battery cells were visually inspected for damage, and the number of damaged and undamaged cylindrical battery cells is shown in Table 1 below.

[0143] [Table 1]

[0144] As a result of the test, in the cylindrical battery cells housed in the example secondary battery packaging box, after the vibration test, the identification codes of 19 cylindrical battery cells on the outer portion facing the side wall of the box were damaged, while the identification codes of the cylindrical battery cells located on the inner side of the box were not damaged. In other words, because there is no contact between the identification code and the partition wall for the inner cylindrical battery cells, the example secondary battery packaging box with perforations in the horizontal and vertical partition walls can prevent identification code damage. However, the cylindrical battery cells on the outer portion cannot prevent contact with the side wall of the box, resulting in cylindrical battery cells with damaged identification codes.

[0145] In the comparative example, among the cylindrical battery cells located in the outer portion as shown in the example, 18 cylindrical battery cells have damaged identification codes. On the other hand, since no perforations are formed in the secondary battery packaging box of the comparative example, it is determined that 8 identification codes are damaged among the cylindrical battery cells located towards the inner portion of the box.

[0146] Therefore, it can be understood that by forming a partition wall or spacer with contact-preventing parts, damage to the identification code can be prevented very effectively. Furthermore, it can be understood that by using an outer protective sheet with contact-preventing parts in a similar manner, or by providing a protective strip on the inner surface of the housing, damage to the identification code in the cylindrical battery cell housed in the outermost part can also be prevented.

[0147] Preferred examples of the invention described above have been disclosed for illustrative purposes, and those skilled in the art with ordinary knowledge of the invention will be able to make various modifications, alterations and additions within the spirit and scope of the invention, and such modifications, alterations and additions should be considered to fall within the scope of the appended claims.

[0148] Industrial applicability

[0149] The specific implementation method is described therein.

Claims

1. A secondary battery packaging box, characterized in that... include: A box body having an external shape that forms an internal space; as well as A partition wall is provided within the housing to divide the internal space into multiple receiving spaces, each containing a plurality of cylindrical battery cells. The partition wall is provided with a contact prevention portion, which is configured to not come into contact with the identification code printed on the outer peripheral surface of the cylindrical battery cell housed in the housing space.

2. The secondary battery packaging box according to claim 1, Its features are, The position and height of the contact prevention portion are set differently depending on the height at which the identification code is positioned and the height of the identification code, when the cylindrical battery cell is housed in the housing space.

3. The secondary battery packaging box according to claim 1, Its features are, The partition wall is configured such that the outer surface of the cylindrical battery cell is allowed to contact the inner surface of the partition wall, and the outer surface of the cylindrical battery cell is prevented from partially contacting the inner surface of the partition wall by the contact.

4. The secondary battery packaging box according to claim 1, Its features are, The contact prevention portion includes a perforated portion or a recessed portion formed in the partition wall, wherein the perforated portion or the recessed portion is formed at a height corresponding to the identification code.

5. The secondary battery packaging box according to claim 4, Its features are, The perforated portion includes a through window in which a portion of the partition wall is removed, and the recessed portion is formed such that a portion of the partition wall has a thinner thickness than the other portions.

6. The secondary battery packaging box according to claim 5, Its features are, The partition wall is made of paper material.

7. The secondary battery packaging box according to claim 4, Its features are, The partition wall includes: Multiple horizontal partition walls; and Multiple vertical partitions are intersected with the horizontal partitions to form a grid-shaped square of the multiple accommodating spaces.

8. The secondary battery packaging box according to claim 7, Its features are, A plurality of upper grooves are formed at predetermined intervals in the horizontal partition wall, and A plurality of lower grooves are formed at predetermined intervals in the vertical partition wall, and the plurality of lower grooves are inserted into and connected to each of the plurality of upper grooves.

9. The secondary battery packaging box according to claim 8, Its features are, The upper groove is formed by recessing downward from the upper end of the horizontal partition wall, and the lower groove is formed by recessing upward from the lower end of the vertical partition wall.

10. The secondary battery packaging box according to claim 9, Its features are, The perforated portion or the recessed portion of the horizontal partition wall is formed between the upper groove and the adjacent upper groove, and The perforated portion or the recessed portion of the vertical partition wall is formed between the lower groove and the adjacent lower groove.

11. The secondary battery packaging box according to claim 1, Its features are, The contact prevention portion includes a protective strip disposed on the partition wall, and The protective strip is configured such that the outer peripheral surface of the cylindrical battery cell, other than the printed surface with the identification code, is contacted first, thereby preventing the printed surface with the identification code from contacting the partition wall.

12. The secondary battery packaging box according to claim 11, Its features are, The protective strip is configured to extend horizontally in both the portion higher and the portion lower than the height corresponding to the identification code.

13. The secondary battery packaging box according to claim 1, Its features are, It also includes an outer protective sheet, which is positioned to be in close contact with the inner surface of the sidewall of the housing, and the outer protective sheet includes a plurality of openings or recesses positioned at a height corresponding to the identification code of each of the plurality of cylindrical battery cells contained therein.

14. The secondary battery packaging box according to claim 1, Its features are, It also includes an outer protective sheet, which is positioned to be in close contact with the inner surface of the sidewall of the housing, and a support band is formed on the outer protective sheet, which extends horizontally at portions higher and lower than the height corresponding to each identification code of the plurality of cylindrical battery cells contained therein.

15. The secondary battery packaging box according to claim 1, Its features are, The housing includes: Multiple protective strips are disposed on the sidewalls to avoid contact with the identification code printed on the outer peripheral surface of the cylindrical battery cell housed in the receiving space. The protective strip is formed to extend horizontally in each of the portions that are higher and lower than the height corresponding to the identification code.

16. A secondary battery packaging separator, said secondary battery packaging separator being inserted into and installed into a housing to form a plurality of receiving spaces for respectively accommodating a plurality of cylindrical battery cells, said housing having an external shape forming the internal spaces. The secondary battery packaging separator is characterized by comprising: Multiple horizontal partition walls; as well as Multiple vertical partition walls, which are arranged across the horizontal partition walls, form a grid-shaped plurality of accommodating spaces, wherein... The contact prevention portions formed on the horizontal and vertical partition walls are configured to not come into contact with the identification code printed on the outer peripheral surface of the cylindrical battery cell when the cylindrical battery cell is contained.

17. The secondary battery packaging separator according to claim 16, Its features are, The position and height of the contact prevention portion are set differently depending on the height at which the identification code is positioned and the height of the identification code, when the cylindrical battery cell is housed in the housing space.

18. The secondary battery packaging separator according to claim 17, Its features are, The position of the contact prevention portion is formed to correspond to the position of the identification code, and the height of the contact prevention portion is greater than the height of the identification code.

19. The secondary battery packaging separator according to claim 16, Its features are, The contact prevention portion includes a perforated portion formed in the partition wall.

20. The secondary battery packaging separator according to claim 16, Its features are, The contact prevention portion includes a recessed portion formed in the partition wall, and the recessed portion is formed such that one part of the partition wall has a thinner thickness than the other part.

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