Battery cell sealed container

Abstract

A sealed container for battery cells is provided to prevent corrosion or damage during the movement of battery cells. According to the invention, the sealed container for battery cells comprises: a first tray including a bottom surface and sidewalls, the bottom surface including a plurality of lower receiving portions in which the lower ends of a plurality of battery cells are respectively received, the sidewalls extending upward from the bottom surface; and a second tray having an upper surface and sidewalls, the upper surface sealing the first tray and including a plurality of upper receiving portions to respectively receive the upper ends of the plurality of battery cells received in the lower receiving portions, the sidewalls extending downward from the upper surface.

Description

Technical Field

[0001] This disclosure relates to a battery cell sealing container, and more particularly to a battery cell sealing container for preventing corrosion or damage during the movement of the battery cell. This application claims priority to Korean Patent Application Nos. 10-2021-0092490 and 10-2022-0067393, filed in Korea on July 14, 2021 and June 2, 2022, respectively, the disclosures of which are incorporated herein by reference. Background Technology

[0002] Typically, in secondary batteries used in small electronic products, a single battery cell is packaged and distributed as a single battery cell, while in high-capacity batteries used in hybrid or electric vehicles, multiple battery cells are configured into battery pack units.

[0003] These individual battery cells are either manufactured into battery packs and then delivered to vehicle manufacturers, or delivered as individual battery cells and then manufactured into battery packs by vehicle manufacturers or battery pack manufacturers.

[0004] Because individual battery cells can short-circuit or be damaged due to contact during transport, individual battery cells are loaded on pallets and then sealed in double-layered cardboard boxes or packaged and delivered by special packaging boxes (such as the "battery packaging box" disclosed in Korean Patent Application Publication No. 10-2014-0094898).

[0005] However, because existing packaging methods are not sealed, individual battery cells are easily corroded by moisture and sea breezes.

[0006] For example, because existing trays only cover the top and bottom of the loaded battery cells, the side surfaces of the loaded battery cells are not covered. Accordingly, to safely protect the loaded battery cells, it is necessary to use a double-layered cardboard box, including an inner box and an outer packaging box. Since the tray has a non-sealed structure and the cardboard box is susceptible to moisture, there is a high possibility of corrosion of the battery cell casings during long-term transportation and storage.

[0007] Correspondingly, although the method of sealing with special, reusable packaging boxes was considered, it was difficult to use expensive special packaging boxes because they were difficult to recycle during export.

[0008] [Existing Technical Documents]

[0009] [Patent Literature]

[0010] Korean Patent Application Publication No. 10-2014-0094898, entitled "Battery Packaging Box". Summary of the Invention

[0011] Technical issues

[0012] This disclosure is designed with the above-mentioned problems in mind, and therefore aims to provide a battery cell sealed container that effectively prevents corrosion caused by moisture and sea breeze or damage caused by impact.

[0013] Technical solution

[0014] This disclosure relates to a battery cell sealing container, the battery cell sealing container comprising: a first tray, the first tray including a bottom surface and sidewalls, wherein the bottom surface includes a plurality of lower end receiving portions, the lower ends of a plurality of battery cells being respectively received in the plurality of lower end receiving portions, and the sidewalls extending upward from the bottom surface; and a second tray, the second tray being configured to seal the first tray, the second tray including a top surface and sidewalls, wherein the top surface includes a plurality of upper end receiving portions, the upper ends of the plurality of battery cells received in the lower end receiving portions being received in the plurality of upper end receiving portions, and the sidewalls extending downward from the top surface.

[0015] The first tray may further include a flange extending outwardly along an edge of the sidewall of the first tray, and the second tray may further include a coupling extending downwardly along an edge of the sidewall of the second tray to cover and fit the flange. At least one locking end may project outwardly from the flange and may be interference-fitted to the inner surface of the coupling of the second tray.

[0016] The first tray may further include a fastening portion that convexes upward along the edge of the sidewall of the first tray, and the second tray may further include a fastening recess that is concave at the lower portion along the edge of the sidewall of the second tray to be fitted around the fastening portion of the first tray. The second tray further includes a sealing member inserted into the fastening recess of the second tray to seal the space between the fastening recess and the fastening portion. The fastening recess of the second tray may be a recess having a bottom surface in the second tray, including an inlet opening toward the fastening portion, wherein the outer surface of the recess is inclined such that the inlet of the recess is narrower than the bottom surface of the recess, and the sealing member inserted into the fastening recess is secured and not dislodged.

[0017] The first tray may have a generally rectangular box shape with an opening at the top, and the bottom surface and sidewalls of the first tray may be integrally formed. The second tray may have a generally rectangular box shape with an opening at the bottom, and the top surface and sidewalls of the second tray may be integrally formed.

[0018] Each of the first tray and the second tray may include four sidewalls, wherein when the second tray is placed on the first tray to cover the first tray, the four surfaces of the sidewalls of the first tray and the second tray are in contact with each other to seal the inside of the battery cell sealing container.

[0019] The height of the sidewall of the first tray may be greater than the height of the sidewall of the second tray.

[0020] The first tray may further include at least one notch or recess that connects the sidewall of the first tray to the lower receiving portion.

[0021] The notch or groove prevents gaps between the sidewall of the first tray and the lower receiving portion.

[0022] The sealed container for the battery cell may further include a desiccant receiving section configured to provide space for receiving desiccant on the inner surface of the sidewall of the first tray.

[0023] The desiccant receiving portion may be disposed between the side wall of the first tray and the lower receiving portion, and the battery cell sealing container may further include at least one protrusion that protrudes upward from the inside of the first tray to support one surface of the desiccant, thereby preventing the desiccant contained in the desiccant receiving portion from tilting inward in the first tray and contacting the battery cell.

[0024] The battery cell sealed container may further include a support member arranged along the edge of the lower receiving portion to support the side surface of the battery cell housed in the lower receiving portion. The desiccant receiving portion may be disposed between the side wall and the lower receiving portion, and the battery cell sealed container may further include at least one protrusion on the support member, the at least one protrusion projecting upward from the inside of the first tray to support a surface of the desiccant, thereby preventing the desiccant housed in the desiccant receiving portion from tilting inward in the first tray and contacting the battery cell.

[0025] Each of the first tray and the second tray may be formed of PP without corrosion inhibitor.

[0026] Multiple first pallet support ends may be formed on the inner side of the first pallet and may be arranged asymmetrically with respect to the center of the first pallet.

[0027] Multiple second pallet support ends may be formed on the inner side of the second pallet and may be arranged asymmetrically with respect to the center of the second pallet.

[0028] Beneficial effects

[0029] The battery cell sealing container described in this disclosure has a fully sealed structure and high durability to ensure the basic safety of the battery cell.

[0030] The sealed battery cell container described in this disclosure can replace, for example, trays and double-layered cardboard boxes used in related technologies, thus reducing the loss of process and packaging materials.

[0031] The battery cell sealing container according to this disclosure can prevent gaps between the sidewall of the first tray and the lower receiving portion through a notch or groove, and can provide structural stability. The notch or groove can further increase the strength of the sidewall of the first tray.

[0032] The battery cell sealed container according to this disclosure may further include a support member arranged along the edge of the lower receiving portion to increase the structural rigidity of the first tray. This increases the structural strength of the battery cell sealed container including the first tray.

[0033] According to the battery cell sealing container described in this disclosure, because the first tray containing the battery cell is covered and sealed by the second tray, and the desiccant is contained in the first tray, corrosion caused by moisture and sea breeze can be effectively prevented, and because the battery cell is fixed in the state where the lower and upper ends of the battery cell are contained, damage caused by impact can be effectively prevented.

[0034] The battery cell sealed container according to this disclosure has the following structure: the upper and lower parts of the loaded battery cell and all sides are sealed to protect the side surfaces, and the degradation of characteristics that may be caused by external deterioration factors during the movement and storage of the loaded battery cell can be minimized.

[0035] Moreover, compared to using a double-layered cardboard box that includes an inner box and an outer box, the packaging process can be simplified and the packaging cost can be reduced because a single-cell sealed container can be used without an inner box, and inexpensive materials without corrosion inhibitors can be used.

[0036] Because the battery cell sealed container described in this disclosure includes a first tray support end and a second tray support end, it can prevent the trays from jamming together when the first tray is stacked and the second tray is stacked. Attached Figure Description

[0037] Figure 1 This is a perspective view showing a sealed container for a battery cell according to an embodiment of the present disclosure.

[0038] Figure 2 This is a view showing a sealed container for a battery cell according to an embodiment of the present disclosure.

[0039] Figure 3 This is a view showing the first tray of a sealed battery cell container according to an embodiment of the present disclosure.

[0040] Figure 4 This is a view showing an example of multiple first trays of a battery cell sealed container being stacked according to an embodiment of the present disclosure.

[0041] Figure 5 This is a view showing an example of multiple second trays of a battery cell sealed container being stacked according to an embodiment of the present disclosure. Detailed Implementation

[0042] The specific structural or functional descriptions below are merely illustrative, describing embodiments based on the concept of this disclosure, and embodiments based on the concept of this disclosure may be implemented in various forms and should not be construed as being limited to the embodiments described herein.

[0043] Furthermore, because various changes and forms can be made to embodiments based on the concept of this disclosure, specific embodiments are shown in the drawings and described in detail herein. However, it should be understood that embodiments based on the concept of this disclosure are not intended to limit this disclosure to specific modes of operation, but rather to include all modifications, equivalents, and alternatives falling within the scope of this disclosure.

[0044] Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0045] Figure 1 This is a perspective view showing a sealed container for a battery cell according to an embodiment of the present disclosure. Figure 2 This is a view showing a sealed container for a battery cell according to an embodiment of the present disclosure. Figure 2 Show along Figure 1 A cross-sectional view and a partially enlarged cross-sectional view taken along line A-A' (Y-axis direction).

[0046] like Figure 1 and Figure 2As shown, the battery cell sealed container 100 according to an embodiment of the present disclosure includes a first tray 1 and a second tray 2.

[0047] The first tray 1 includes a plurality of lower end receiving portions 11, in which the lower ends of a plurality of battery cells (not shown, e.g., cylindrical battery cells) are respectively received. The second tray 2 seals the first tray 1 and includes a plurality of upper end receiving portions 21, in which the upper ends of the battery cells received in the lower end receiving portions 11 are received. The battery cells (in...) Figure 1 The battery cell is placed vertically in the first tray 1 (in the Z-direction), with its lower end housed in the lower receiving portion 11, and its upper end housed in the upper receiving portion 21 when the second tray 2 covers the first tray 1. Thus, the lower receiving portion 11 and the upper receiving portion 21 may include a mounting groove, in which the battery cell is placed vertically and individually loaded, and can be securely housed between the lower receiving portion 11 and the upper receiving portion 21. To accommodate the battery cell in its vertical position, when the second tray 2 covers the first tray 1, the lower receiving portion 11 of the first tray 1 and the upper receiving portion 21 of the second tray 2 should be aligned with each other in the Z-axis direction.

[0048] Preferably, the first tray 1 and the second tray 2 are formed by vacuum forming of plastic sheets to reduce manufacturing costs and provide high structural rigidity relative to thickness. The plastic sheets have high durability to ensure the basic safety of the battery cells, and the vacuum forming method is suitable for forming the lower receiving portion 11 and the upper receiving portion 21, which serve as mounting recesses.

[0049] In the example shown, the first tray 1 has the shape of a generally rectangular box, and the top of the first tray 1 ( Figure 1 The lower receiving portion 11 has an opening in the Z direction and includes a bottom surface and sidewalls. The bottom surface has a generally rectangular shape, having a short side (extending in the Y-axis direction) and a long side (extending in the X-axis direction), and the sidewalls extend upward from the bottom surface. Figure 1 Extending in the Z direction. The shape of the bottom surface is not limited to a rectangular shape, but can be any of a square shape, a circular shape, or other polygonal shapes. However, considering that the battery cell sealed container 100 is placed in a cardboard box and transported, it is preferable that the battery cell sealed container 100 has a rectangular box shape so as to be effectively accommodated in the cardboard box. Therefore, it is also preferable that the first tray 1 has a rectangular box shape and that the bottom surface of the first tray 1 has a rectangular shape.

[0050] The bottom surface and sidewalls can be integrally formed. Specifically, in the first tray 1, preferably, at least one recess 1a is formed in an elongated groove shape to connect the sidewall to the lower receiving portion 11, thereby preventing gaps between the sidewall and the lower receiving portion 11 and providing structural stability. The recess 1a can be formed from the sidewall of the first tray 1 to the bottom surface, and the number of recesses 1a can be appropriately adjusted. For example, as... Figure 1 As shown, one notch 1a can be formed in the short side of the bottom surface, and two notches 1a can be formed in the long side of the bottom surface, thus a total of six notches 1a can be formed. Typically, when a product with a generally rectangular box shape is formed and removed by vacuum forming, the sidewalls bulge outwards. In this disclosure, to prevent this phenomenon, the notches 1a can be formed in the first tray 1 to prevent gaps between the lower receiving portion 11 and the sidewall of the first tray 1. Additionally, the notches 1a can further increase the strength of the sidewalls.

[0051] In the example shown, the second tray 2 may have a generally rectangular box shape, and the second tray 2 is at the bottom (with) Figure 1 The upper receiving portion 21 has an opening at a location (opposite to the Z-direction) and includes a top surface and sidewalls. The top surface, including the upper receiving portion 21, has a generally rectangular shape, has a short side (extending in the Y-axis direction) and a long side (extending in the X-axis direction), and the sidewalls extend downwards from the top surface (opposite to the Z-direction). The top surface and sidewalls can be integrally formed. The second tray 2 is formed to conform to the shape of the first tray 1, thereby matching the first tray 1 such that there is no gap when the second tray 2 covers the first tray 1.

[0052] Because the battery cell sealed container 100 is used to store battery cells, it is preferable to minimize the introduction of external moisture and external contaminants. In the embodiments described in this disclosure, the first tray 1 may include four sidewalls, and the second tray 2 may also include four sidewalls. When the second tray 2 is placed on the first tray 1 to cover the first tray 1, the four surfaces of the sidewalls of the second tray 2 and the first tray 1 can contact each other to seal the inside of the battery cell sealed container 100.

[0053] To remove internal moisture and prevent even some external moisture from entering, the first tray 1 preferably further includes a desiccant receiving section 13, which provides space on the inner surface of the side wall to accommodate the desiccant 4, preventing the battery cells contained therein from being corroded by moisture. In other words, the desiccant receiving section 13 can be disposed between the side wall of the first tray 1 and the lower receiving section 11.

[0054] In this configuration, to prevent the desiccant 4 contained in the desiccant receiving portion 13 from tilting inward in the first tray and contacting the battery cell, it is preferable that at least one protrusion 13b protrudes upward from the inside of the first tray 1 to support one surface of the desiccant 4. In other words, to prevent the desiccant 4 contained in the desiccant receiving portion 13 from tilting inward in the first tray 1 and contacting the battery cell, it is preferable to further provide at least one protrusion 13b that protrudes upward from the inside of the first tray 1 to support one surface of the desiccant 4.

[0055] Furthermore, in order to keep the battery cells upright in the first tray 1 after the second tray 2 is removed, it is preferable that the dimension of the lower receiving portion 11 of the first tray 1 in the Z-axis direction is greater than the dimension of the upper receiving portion 21 of the second tray 2 in the Z-axis direction. To provide adequate and sufficient space for the desiccant receiving portion 13, it is advantageous that the height of the sidewall of the first tray 1 is greater; therefore, the height of the sidewall of the first tray 1 can be greater than the height of the sidewall of the second tray 2.

[0056] Existing trays or battery packaging boxes do not include the desiccant receiving section 13 as described in this disclosure. In existing trays or battery packaging boxes, expensive materials such as PP containing corrosion inhibitors may be used as the material to prevent corrosion of the battery cells. However, when the desiccant receiving section 13 is provided separately as in this disclosure and the desiccant 4 is contained in the first tray 1, it is not necessary to use expensive materials such as PP as the material of the first tray 1 or the second tray 2, and inexpensive PP without corrosion inhibitors can be used, thereby reducing packaging costs. Moreover, because the protrusion 13b is provided as a surface to support the desiccant 4, even when the desiccant 4 is tilted inward, it can be held in place by the protrusion 13b, thus preventing further tilting to contact the battery cells, thereby ensuring safe use.

[0057] Because the battery cell sealing container 100 is used to store battery cells, it is preferable that the battery cell sealing container 100 absorbs external impacts as much as possible. This disclosure provides a structure in which the battery cell sealing container 100 absorbs external impacts and can independently ensure structural strength.

[0058] Figure 3 This is a view showing the first tray of a sealed battery cell container according to an embodiment of the present disclosure. Figure 3 The diagram shows a view of the inside of the first tray and a partially enlarged top view.

[0059] like Figure 2 or Figure 3 As shown, preferably, a support member 12 is further provided, which is arranged along the edge of the lower receiving portion 11 to have a specific height and supports the side surface of the battery cell housed in the lower receiving portion 11.

[0060] Specifically, the support member 12 serves as a rib to increase the structural rigidity of the first tray 1 while supporting the side surface of the battery cell. Accordingly, the structural strength of the battery cell sealed container 100, including the first tray 1 (which includes the support member 12), is increased. In this case, a protrusion 13b for supporting one surface of the desiccant 4 contained in the desiccant receiving portion 13 can be formed on the support member 12.

[0061] Furthermore, a fastening portion 15 can be formed, which is convex upward along the edge of the side wall of the first tray 1, and a fastening groove 23 can be formed, which is concave at the lower part along the edge of the side wall of the second tray 2, so as to be fitted around the fastening portion 15 of the first tray 1.

[0062] Moreover, such as Figure 2 The partially enlarged cross-sectional view shows in detail that the encapsulation member 3 can be further provided, inserted into the fastening groove 23 of the second tray 2, such that when the fastening portion 15 is inserted into the fastening groove 23, the space between the fastening groove 23 and the fastening portion 15 is completely sealed. Thus, the encapsulation member 3 can be assembled on the outside of the second tray 2, and when the second tray 2 covers the first tray 1, the encapsulation member 3 can contact the sidewall of the first tray 1 to increase the sealing properties, thereby enabling the battery cell sealing container according to this disclosure to have a completely sealed structure. Accordingly, external moisture and external contaminants are introduced as little as possible. Typically, encapsulation components are not attached to vacuum-formed products, but in this disclosure, the encapsulation member 3 is attached to ensure sealing properties.

[0063] In this case, the fastening groove 23 of the second tray 2 is a groove having a bottom surface in the second tray 2, including an inlet opening toward the fastening portion 15 (in the direction opposite to the Z-axis), and preferably, the outer surface of the groove, particularly the lower end of the outer surface, is inclined inward, such that the inlet of the groove is narrower than the bottom surface of the groove (i.e., the cross-section of the fastening groove 23 in the Y-axis direction decreases in the direction opposite to the Z-axis), and the encapsulation member 3 inserted into the fastening groove 23 is fixed in place and not separated.

[0064] Furthermore, in the first tray 1, to increase the sealing and fastening force between the first tray 1 and the second tray 2, a flange 14 can be formed outwardly along the edge of the side wall of the first tray 1, and as shown... Figure 2 As shown in the enlarged cross-sectional view, a connecting portion 22 can be formed downward (in the direction opposite to the Z-axis) along the edge of the sidewall of the second tray 2 to cover and assemble the flange 14.

[0065] Moreover, reference Figure 3 At least one locking end 16 can protrude outward from the flange 14 to be more securely interference-fitted to the inner surface of the coupling portion 22 of the second tray 2.

[0066] When the second tray 2 is attached to the first tray 1, the fit or interference fit between the connecting portion 22 of the second tray and the flange 14 allows the battery cell sealing container 100 to be sealed and the battery cell to be secured. It also allows the second tray 2 to be easily separated from the first tray 1, thus eliminating the need for a separate locking device. Finally, the force of the tape binding the outside of the cardboard box when the battery cell sealing container 100 is encapsulated in the box achieves an effect similar to locking the second tray 2 and the first tray 1.

[0067] As described above, the battery cell sealed container according to this disclosure has the following structure: the upper and lower parts and all sides of the loaded battery cell are sealed to protect the side surfaces and to minimize the degradation of characteristics that may be caused by external deterioration factors during the movement and storage of the loaded battery cell.

[0068] Moreover, compared to using a double-layered cardboard box that includes an inner box and an outer box, the packaging process can be simplified and the packaging cost can be reduced because a single-cell sealed container can be used without an inner box, and inexpensive materials without corrosion inhibitors can be used.

[0069] Figure 4This is a view showing an example of multiple first trays of a battery cell sealed container stacked in the Z-axis direction according to an embodiment of the present disclosure. Figure 5 This is a view showing an example of multiple second trays of a battery cell sealed container stacked in the Z-axis direction according to an embodiment of the present disclosure.

[0070] In the first tray 1, as in Figure 4 As shown, multiple first tray support ends 17 can be formed on the inner side of the sidewall. The first tray support ends 17 can be arranged asymmetrically with respect to the center of the first tray 1. In the example shown, the first tray 1 can include four sidewalls, and the first tray support ends 17 can be formed on two sidewalls facing each other with respect to the center of the first tray 1. For example, the first tray support ends 17 can be formed on the shorter sides corresponding to the left and right sidewalls in the X direction, and can be arranged asymmetrically with respect to the center of the first tray 1. When another first tray 1 is stacked on top of the first tray 1 in a different direction, the first tray support ends 17 can support the lower part 17a of the other first tray 1 and can prevent the stacked first trays 1 from getting stuck.

[0071] Because multiple first trays 1 can be stacked and stored, storage space can be managed effectively. Since the first trays 1 are prevented from jamming each other during storage, when one first tray 1 is removed and a battery cell is accommodated, the first tray 1 can be easily and quickly separated from another first tray, thereby increasing work efficiency.

[0072] Moreover, such as Figure 5 As shown, multiple second tray support ends 27 can be formed on the inner side of the second tray 2 and can be arranged asymmetrically relative to the center of the second tray 2. In the example shown, the second tray 2 can have four side walls, and the second tray support ends 27 can be arranged asymmetrically on the two side walls facing the center of the second tray 2. For example, the second tray support ends 27 can be arranged on the left and right side walls in the X direction. When another second tray 2 is stacked on top of the second tray 2 in a different direction, the second tray support ends 27 formed on the other second tray 2 can be supported on the second tray 2 and can prevent the stacked second trays 2 from jamming against each other.

[0073] Because multiple second trays 2 can be stacked and stored, storage space can be managed effectively. And because the second trays 2 are prevented from jamming each other during storage, when one second tray 2 is removed and covers the first tray 1 containing the battery cells, the second tray 2 can be easily and quickly separated from the other second tray 2, thereby increasing work efficiency.

[0074] While this disclosure has been specifically shown and described with reference to exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the scope of this disclosure. Accordingly, the scope of this disclosure is defined by the appended claims, which are described as examples including many such variations.

[0075] Explanation of reference numerals in the attached figures

[0076] 1: First tray 1a: Notch / groove

[0077] 2: Second tray; 3: Packaging components

[0078] 4: Dehumidifier 11: Lower receiving section

[0079] 12: Support component; 13: Dehumidifier receiving section

[0080] 13b: Protrusion; 14: Flange

[0081] 15: Fastening part 16: Locking end

[0082] 17: First tray support end 17a: Lower part

[0083] 21: Upper receiving part; 22: Second tray connecting part

[0084] 23: Fastening groove; 27: Second tray support end

Claims

1. A battery cell sealing container comprising: a first tray including a bottom surface and a side wall, wherein the bottom surface of the first tray includes a plurality of lower end receiving portions in which lower ends of a plurality of battery cells are respectively accommodated, and the side wall of the first tray extends upward from the bottom surface; and a second tray configured to seal the first tray, the second tray including a top surface and a side wall, wherein the top surface of the second tray includes a plurality of upper end receiving portions in which upper ends of the plurality of battery cells accommodated in the lower end receiving portions are accommodated, and the side wall of the second tray extends downward from the top surface of the second tray, wherein the first tray further includes a fastening portion which is convex upward along an edge of the side wall of the first tray, and the second tray further includes a fastening groove which is concave at a lower portion along an edge of the side wall of the second tray to be fitted around the fastening portion of the first tray, wherein the second tray further includes a packing member inserted into the fastening groove of the second tray to seal a space between the fastening groove and the fastening portion, wherein the battery cell sealing container further includes a desiccant receiving portion configured to provide a space in which a desiccant is accommodated on an inner surface of the side wall of the first tray, wherein the desiccant receiving portion is disposed between the side wall of the first tray and the lower end receiving portion, and the battery cell sealing container further includes at least one protrusion protruding upward from an inner side of the first tray to support one surface of the desiccant such that the desiccant accommodated in the desiccant receiving portion is prevented from being inclined inward in the first tray and contacting the battery cells. 2.The battery cell sealing container of claim 1, wherein the first tray further includes a flange extending outward along an edge of the side wall of the first tray, and the second tray further includes a coupling portion extending downward along an edge of the side wall of the second tray to cover and fit the flange.

3. The battery cell sealing container according to claim 2, wherein, At least one locking end protrudes outward from the flange and is interference-fitted to an inner surface of the coupling portion of the second tray.

4. The battery cell sealing container according to claim 1, wherein, The fastening groove of the second tray is a groove having a bottom surface in the second tray to include an entrance opened toward the fastening portion, wherein an outer side surface of the groove is inclined such that the entrance of the groove is narrower than the bottom surface of the groove, and the packing member inserted into the fastening groove is fixed so as not to be separated.

5. The battery cell sealing container according to claim 1, wherein, The first tray has a substantially rectangular box shape having an opening at a top portion, and the bottom surface and the side wall of the first tray are integrally formed, and The second tray has a substantially rectangular box shape having an opening at a bottom portion, and the top surface and the side wall of the second tray are integrally formed.

6. The battery cell sealing container according to claim 5, wherein, Each of the first tray and the second tray includes four side walls, wherein, when the second tray is positioned on the first tray to cover the first tray, four surfaces of the side walls of the first tray and the second tray contact each other to seal an inside of the battery cell sealing container.

7. The battery cell sealing container according to claim 6, wherein, The height of the side wall of the first tray is greater than the height of the side wall of the second tray.

8. The battery cell sealing container according to claim 1, wherein, The first tray further includes at least one notch groove connecting the side wall of the first tray to the lower end receiving portion.

9. The battery cell sealing container according to claim 8, wherein, The notch groove prevents a gap between the side wall of the first tray and the lower end receiving portion. 10.The battery cell sealing container of claim 1, further comprising a support disposed along an edge of the lower end receiving portion to support a side surface of the battery cell accommodated in the lower end receiving portion.

11. The battery cell sealing container according to claim 10, wherein, The desiccant receiving portion is disposed between the side wall and the lower end receiving portion, and the battery cell sealing container further includes at least one protrusion on the support protruding upward from an inside of the first tray to support one surface of the desiccant such that the desiccant accommodated in the desiccant receiving portion is prevented from being inclined inward in the first tray and contacting the battery cell.

12. The battery cell sealing container according to claim 1, wherein, Each of the first tray and the second tray is formed of PP without a corrosion inhibitor. 13.The battery cell sealing container of claim 1, further comprising a support disposed along an edge of the lower end receiving portion to support a side surface of the battery cell accommodated in the lower end receiving portion.

14. The battery cell sealing container according to claim 1, wherein, A plurality of first tray support ends are formed on an inside of the first tray and are asymmetrically disposed with respect to a center of the first tray.

15. The battery cell sealing container according to claim 1, wherein, A plurality of second tray support ends are formed on an inside of the second tray and are asymmetrically disposed with respect to a center of the second tray.

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