Rack for storing battery cell and battery cell storage device comprising same

Abstract

A battery cell storage device according to the present invention comprises trays and a rack for loading the trays, wherein the rack comprises: a plurality of pockets provided with vertical partition walls; a rotating plate configured to rotate in a clockwise direction and / or counter-clockwise direction; and a tray fixing member which is coupled to the rotating plate and fixes the tray accommodated in the pocket, wherein the rotating plate is installed on the vertical partition wall.

Description

Rack for storing battery cells and battery cell storage device including the same

[0001] This application claims the benefit of priority from Republic of Korea Patent Application No. 10-2024-0080489, filed on June 20, 2024.

[0002] The present invention relates to a rack for storing battery cells and a battery cell storage device including the same.

[0003]

[0004] Interest in energy storage technology has been growing steadily in recent years. As its applications expand to include energy for mobile phones, camcorders, laptops, and even electric vehicles, research and development efforts in this area are becoming increasingly concrete. Batteries are receiving the most attention in this regard, and the development of rechargeable lithium-ion secondary batteries is a particular focus.

[0005] A typical lithium-ion secondary battery is assembled by alternately layering a cathode, a porous separator, and an anode, inserting them into a can or pouch of a certain size and shape, and then injecting the electrolyte. The electrolyte then permeates between the cathode, anode, and separator via capillary force.

[0006] Secondary batteries undergo a pre-aging process, where the electrolyte is injected to a certain height and then left at room temperature for approximately three days. This pre-aging process is performed before the activation process to improve the wetting of the electrolyte on the electrode assembly. The aging process also occurs intermittently during the secondary battery activation process.

[0007] Fig. 1 is a drawing illustrating a rack for storing battery cells according to a conventional technology. Conventionally, battery cells (10) are stored in a tray (2), and the trays (2) containing the battery cells (10) are loaded horizontally (Y direction) and vertically (Z direction) on the rack (1) and a pre-aging process is performed. According to this conventional technology, as illustrated in Fig. 2, an electrolyte (ES) accumulates at the bottom of the battery cell (10), and the electrolyte at the bottom rises through the separator, the positive electrode plate, and the negative electrode plate due to a capillary phenomenon and seeps into the upper portion of the electrode assembly (EA). Here, the lower portion and the upper portion are defined based on the Z direction.

[0008] However, due to the nature of the materials, wetting of the electrodes and separator with the electrolyte requires considerable time and demanding process conditions. In particular, in battery cells undergoing high-temperature, pressurized processing, the separator and electrodes are already in close contact, often hindering proper electrolyte wetting. Furthermore, waiting for sufficient electrolyte wetting across all areas inevitably results in low productivity.

[0009] Patent Document 1 discloses an aging device and method for a secondary battery cell to improve the wettability of an electrolyte, but the device has a very complex configuration and has problems in that it has low space efficiency.

[0010] (Patent Document 1) Republic of Korea Patent Publication No. 10-2020-0042800

[0011]

[0012] The technical idea of ​​the present invention aims to solve a problem by providing a battery cell storage rack and a battery cell storage device that can improve the impregnation efficiency of electrolyte while having a simple device configuration and excellent space efficiency.

[0013]

[0014] According to exemplary embodiments of the present invention, a rack for loading battery cell trays is provided.

[0015] The above rack,

[0016] Multiple pockets with vertical partition walls;

[0017] a turntable configured to rotate clockwise and / or counterclockwise; and

[0018] A tray fixing member coupled to the above-mentioned turntable and configured to fix a tray stored inside the above-mentioned pocket;

[0019] The above-mentioned rotating plate is characterized in that it is installed on the above-mentioned vertical partition wall.

[0020] According to further embodiments of the present invention, a storage device for battery cells is provided.

[0021] The storage device of the above battery cell is,

[0022] a tray configured to accommodate battery cells; and

[0023] a rack for loading the above trays;

[0024] Multiple pockets with vertical partition walls;

[0025] a turntable configured to rotate clockwise and / or counterclockwise; and

[0026] A tray fixing member coupled to the above-mentioned turntable and configured to fix a tray stored inside the above-mentioned pocket;

[0027] The above-mentioned rotating plate is characterized in that it is installed on the above-mentioned vertical partition wall.

[0028] In exemplary embodiments, the rotation axis of the turntable is parallel to the first direction (Y direction).

[0029] In exemplary embodiments, each pocket is provided with a pair of first and second rotating plates, the first rotating plate being installed on a vertical partition wall on one side of the first direction (Y direction), and the second rotating plate being installed on a vertical partition wall on the other side of the first direction (Y direction).

[0030] In exemplary embodiments, the tray fixing member is ring-shaped.

[0031] In exemplary embodiments, the turntable is configured to be engageable with the vertical partition wall and to be detachable from the vertical partition wall.

[0032] In exemplary embodiments, one turntable is provided with a plurality of tray fixing members, and the plurality of tray fixing members are spaced apart from each other along the second direction (X direction).

[0033] In exemplary embodiments, the pocket has an open top and / or bottom structure.

[0034] In exemplary embodiments, the tray fixing member is positioned at a height that allows the tray to rotate within the pocket.

[0035] In exemplary embodiments, the tray comprises:

[0036] bottom;

[0037] First and second side walls perpendicular to the floor and facing each other; and

[0038] It includes an upper frame having a frame shape with an open center, located on the upper portion of the first and second side walls.

[0039] In exemplary embodiments, the tray fixing member is configured to be fastened to the upper frame and / or the bottom portion.

[0040]

[0041] According to embodiments of the present invention, the impregnation efficiency of the electrolyte can be improved, thereby shortening the time required for aging.

[0042]

[0043] Figure 1 is a drawing illustrating a rack for storing battery cells according to a conventional technology.

[0044] Figure 2 is a drawing schematically showing a wetting method of an electrolyte according to a conventional technique.

[0045] Figure 3 is a front view of a rack according to exemplary embodiments of the present invention.

[0046] FIG. 4 is a top view of a rack according to exemplary embodiments of the present invention.

[0047] FIG. 5 is an enlarged perspective view of the pocket in the dotted line portion of the rack shown in FIG. 3.

[0048] FIG. 6 is a drawing illustrating a tray fixing member according to another embodiment of the present invention.

[0049] Figure 7 is a drawing showing the turntable rotated clockwise.

[0050] Figure 8 is a drawing showing the turntable rotated counterclockwise.

[0051] Figure 9 is a side view of a battery cell to explain the effect of the present invention.

[0052] FIG. 10 is a front view of a battery cell storage device according to exemplary embodiments of the present invention.

[0053] FIG. 11 is a top view of a battery cell storage device according to exemplary embodiments of the present invention.

[0054] FIG. 12 is a front view of a tray according to exemplary embodiments of the present invention.

[0055] FIG. 13 is a perspective view of a tray according to exemplary embodiments of the present invention.

[0056] Fig. 14 is a drawing showing the tray of Fig. 12 coupled to a tray fixing member.

[0057] FIG. 15 is a drawing showing a tray and a tray fixing member combined according to another embodiment of the present invention.

[0058]

[0059] [Explanation of symbols]

[0060] 1000: Battery cell storage device

[0061] 100: Rack

[0062] 110: Pocket

[0063] 120: Vertical partition wall

[0064] 130: Turntable

[0065] 140: Tray fixing member

[0066] 141: First tray fixing member

[0067] 142: Second tray fixing member

[0068] 200, 300: Tray

[0069] 210: Bottom

[0070] 220: First side wall

[0071] 230: Second side wall

[0072] 240: Upper frame

[0073]

[0074] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0075] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist that can replace them at the time of this application. In this specification, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0076] In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0077] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or schematically illustrated for clearer explanation. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes or proportions.

[0078] In this specification, the horizontal direction of the rack is defined as the first direction (Y direction), the depth direction of the rack (X direction) is defined as the second direction, and the vertical direction of the rack (Z direction) is defined as the third direction.

[0079]

[0080] Rack for storage of battery cells

[0081] As a first embodiment of the present invention, a rack for storing battery cells (hereinafter referred to as “rack”) is provided.

[0082] FIG. 3 is a front view of a rack according to exemplary embodiments of the present invention, FIG. 4 is a top view of a rack according to exemplary embodiments of the present invention, and FIG. 5 is an enlarged view of a pocket of the rack illustrated in 3.

[0083] Referring to FIGS. 3 to 5, a rack (100) according to exemplary embodiments of the present invention includes a plurality of pockets (110); a turntable (130); and a tray fixing member (140). A vertical partition wall (120) is formed in each pocket (110). One pocket (110) may have at least one pair of vertical partition walls (120). A tray (200) is stored in the internal space of the pocket (110).

[0084] The above rack (100) is provided with a turntable (130) and a tray fixing member (140) to rotate the tray (200) stored inside while fixing it. The turntable (130) is configured to rotate clockwise and / or counterclockwise, the tray fixing member (140) is coupled to the turntable (130), and the tray fixing member (140) is configured to fix the tray (200) stored inside the pocket (110) to the turntable (130). The turntable (130) is installed on the vertical partition wall (120).

[0085] According to exemplary embodiments of the present invention, the rack (100) is configured so that the tray (200) stored in the pocket (110) can move along a circular path following the rotation of the turntable (130), thereby allowing the battery cell (10) stored inside the tray (200) to change from a horizontal state to an inclined state as shown in FIG. 9.

[0086] When the battery cell is tilted as in (b) of FIG. 9, the surface tension of the electrolyte (ES) decreases compared to when the battery cell is in a horizontal state as in (a) of FIG. 9, thereby increasing the impregnation efficiency of the electrolyte. Accordingly, the rack (100) according to the present invention can improve the impregnation efficiency of the electrolyte, thereby shortening the time required for aging.

[0087] Referring to FIGS. 3 and 4, the rack (100) may have a structure in which a plurality of pockets (110) are arranged along the first direction (Y direction), the second direction (X direction), and the third direction (Z direction) in order to store a plurality of trays (200). However, the embodiment of the present invention is not limited to the form illustrated in FIG. 3. That is, the number of pockets (110) arranged along the first direction (Y direction), the second direction (X direction), or the third direction (Z direction) may be one.

[0088] Referring to FIGS. 4 and 5, each of the pockets (110) may be formed by a vertical partition wall (120) extending in a third direction (Z direction) and a horizontal frame (150) extending in a first direction (Y direction). At least one of the vertical partition walls (120) is spaced apart from each other along the first direction (Y direction). The distance between the vertical partition walls (120) may or may not be constant. At least one of the horizontal frames (150) is spaced apart from each other along the second direction (X direction). The distance between the horizontal frames (150) may or may not be constant. The distance between the vertical partition walls (120) may approximately correspond to the length of the pocket (110) in the first direction (Y direction). The spacing between the horizontal frames (150) may roughly correspond to the second direction (X direction) length of the pocket (110).

[0089] The above pocket (110) may have an open structure at the top and / or bottom, respectively. The tray (200) may be stored and taken out into the internal space of the pocket (110) through the open portion at the top and / or the open portion at the bottom. Here, the top and bottom may be defined based on the third direction (Z direction). In exemplary embodiments, in order for the pocket (110) to have an open structure at the top, the horizontal frames (150) may be spaced apart from each other based on the second direction (X direction), so that the pocket (110) may have an open portion (160).

[0090] Referring to FIG. 5, in exemplary embodiments, a pair of first and second rotary plates (131, 132) may be provided for each pocket (110). The first rotary plate (131) may be installed on a vertical partition wall (120) on one side with respect to the first direction (Y direction), and the second rotary plate (132) may be installed on a vertical partition wall (120) on the other side with respect to the first direction (Y direction). Accordingly, the first and second rotary plates (131, 132) face each other. The first and second rotary plates (131, 132) may be configured to rotate in conjunction with each other.

[0091] The above-described rotary plate (130) may be positioned at the center of the plane of the vertical partition wall (120). Here, the plane of the vertical partition wall (120) may be defined as a plane formed by the second direction (X direction) and the third direction (Z direction). The rotary plate (130) may be configured to rotate while being coupled to the vertical partition wall (120). In addition, the rotary plate (130) may have a structure that is separable from the vertical partition wall (120). Accordingly, the rotary plate (130) can rotate freely independently from the fixed vertical partition wall (120). In exemplary embodiments, the vertical partition wall (120) may have a rotary plate receiving groove (not shown) that is recessed internally in the thickness direction (Y direction) of the vertical partition wall (120), and the rotary plate (130) may be inserted into the rotary plate receiving groove.

[0092] The racks illustrated in FIGS. 3 to 5 illustrate an embodiment in which a pair of tray fixing members (140) is provided on a single turntable (130), but the present invention is not limited thereto. When a pair or more of tray fixing members (140) are provided on a single turntable (130), a plurality of tray fixing members (140) may be arranged to be spaced apart from each other along the second direction (X direction), which is the depth direction of the rack. In this case, with respect to the second direction (X direction), one side and the other side of the tray (200) are respectively fixed to the turntable (130) by the tray fixing members (140), so that the tray (200) can rotate in a stable state while maintaining balance when the turntable (130) rotates.

[0093] Referring to Fig. 6, one turntable (130) may be equipped with one tray fixing member (140). As described above, the number, shape, and position of the tray fixing members (140) may be appropriately designed and changed according to the shape of the tray (200) stored in the rack (100).

[0094] In exemplary embodiments, the turntable (130) may be configured to be coupled and detached from the vertical partition wall (120). The turntable (130) may be provided in various models depending on the number of tray fixing members (140) coupled to the turntable (130) and the position of the tray fixing members (140) coupled to the turntable (130), and may be configured to be replaceable according to the specifications of the tray (200).

[0095] Fig. 7 is a drawing showing a rotating plate rotating clockwise, Fig. 8 is a drawing showing a rotating plate rotating counterclockwise, and Fig. 9 is a side view of a battery cell to explain the effect of the present invention.

[0096] Referring to FIGS. 7 and 8, the rotation axis (not shown) of the turntable (130) may be parallel to the first direction (Y direction), which is the horizontal direction of the rack. Therefore, when the turntable (130) rotates, the tray (200) connected to the turntable (130) by the tray fixing member (140) can rotate in an arc forward / backward in the second direction (X direction), which is the depth direction of the rack (100). In addition, the battery cell (10) stored in the tray can be converted from a horizontal state as in FIG. 9 (a) to an inclined state as in FIG. 9 (b).

[0097] Referring to FIG. 7, the turntable (130) can be rotated clockwise at a predetermined angle (e.g., 45 degrees). There is no particular limitation on the rotation angle of the turntable (130) as long as it is within a range where the battery cell (10) does not detach from the tray (200) when the turntable rotates. According to exemplary embodiments, the turntable (130) can be configured to rotate from the state (a) of FIG. 7 to the state (b) of FIG. 7, and then return from the state (b) of FIG. 7 to the state (a) of FIG. 7. And, the rotation and return can be repeated. Referring to FIG. 8, the turntable (130) can be rotated counterclockwise at a predetermined angle (e.g., 45 degrees). In this case, there is no particular limitation on the rotation angle of the turntable (130), and the turntable (130) can be configured to repeat the rotation and return.

[0098] Referring to FIGS. 5 and 6, the tray fixing member (140) may be ring-shaped. Here, the ring-shaped member refers to a shape that can be inserted or hung on something, and there is no particular limitation on its shape. In addition, the tray (200) may have a receiving groove (not shown) into which the tray fixing member (140) can be inserted. Accordingly, the tray (200) may be forcibly fitted into the ring-shaped tray fixing member (140) and fixed to the rotating plate (120).

[0099] In exemplary embodiments, the tray fixing member (140) may be positioned at a height that allows the tray (200) to rotate within the pocket (110). Here, the height refers to the height from the bottom of the pocket (110) in the third direction (Z direction). If the position at which the tray fixing member (140) is coupled to the turntable (130) is too high or too low, the tray (200) may collide with a structure of the rack (e.g., a horizontal frame) when rotating. Therefore, it is preferable that the tray fixing member (140) be positioned at a height that allows the tray (200) to rotate within the pocket (110).

[0100]

[0101] A battery cell storage rack according to exemplary embodiments of the present invention is configured to rotate trays stored in the rack, such that battery cells in a horizontal state can be converted to an inclined state by the rotation of the trays. As the battery cells are tilted, the electrolyte impregnation efficiency increases, ultimately shortening the aging time.

[0102]

[0103] Battery cell storage device

[0104] FIG. 10 is a front view of a battery cell storage device according to exemplary embodiments of the present invention, and FIG. 11 is a top view of a battery cell storage device (hereinafter referred to as “storage device”) according to exemplary embodiments of the present invention.

[0105] For reference, a storage device (1000) according to exemplary embodiments of the present invention includes a tray (200); and a rack (100).

[0106] The above rack (100) may be the rack described above.

[0107] For example, the rack (100) is for loading the tray (200), and includes a plurality of pockets (110) having vertical partition walls (120); a turntable (130) configured to rotate clockwise and / or counterclockwise; and a tray fixing member (140) coupled to the turntable (130) and configured to fix a tray (200) accommodated inside the pocket (110); wherein the turntable (130) can be installed on the vertical partition walls (120).

[0108] In exemplary embodiments, the pocket (110) may have an open top and / or bottom structure. Accordingly, the tray (200) can be easily stored and removed into the internal space of the pocket (110) through the upper opening and / or the lower opening of the pocket (110).

[0109] In exemplary embodiments, the rotation axis of the turntable (130) is parallel to the first direction (Y direction) of the rack (100).

[0110] In exemplary embodiments, a pair of first and second rotary plates (131, 132) are provided for each pocket (110), and the first rotary plate (131) is installed on a vertical partition wall (120) on one side of the first direction (Y direction), and the second rotary plate (132) is installed on a vertical partition wall (120) on the other side of the first direction (Y direction).

[0111] In exemplary embodiments, the tray fixing member (140) may be ring-shaped. The tray (200) may have a receiving groove (not shown) into which the tray fixing member (140) may be inserted. Accordingly, the tray (200) may be forcibly fitted into the ring-shaped tray fixing member (140) and fixed to the rotating plate (130).

[0112] In exemplary embodiments, the turntable (130) is configured to rotate while being coupled to the vertical partition wall (120). Accordingly, the turntable (130) can freely rotate independently of the vertical partition wall (120) to which the turntable (130) is fixed.

[0113] In exemplary embodiments, the turntable (130) may be configured to be coupled with the vertical partition wall (120) and may be configured to be detachable from the vertical partition wall (120). Accordingly, the turntable (130) may be provided in various models depending on the number of tray fixing members (140) coupled to the turntable (130) and the position of the tray fixing members (140) coupled to the turntable (130), and may be replaced depending on the specifications of the tray (200).

[0114] FIG. 12 is a front view of a tray (200) according to exemplary embodiments of the present invention, FIG. 13 is a perspective view of a tray (200) according to exemplary embodiments of the present invention, and FIG. 14 is a drawing showing the tray (200) of FIG. 12 coupled to a tray fixing member (140).

[0115] Referring to FIGS. 12 and 13, the tray (200) includes a bottom portion (210); first and second side walls (220, 230); and an upper frame (240). The bottom portion (210), the first and second side walls (220, 230), and the upper frame (240) may be integral, or may be combined.

[0116] The above-mentioned bottom portion (210) is a place where one or more battery cells (10) are placed, and may be plate-shaped. A battery cell receiving groove (not shown) for receiving the battery cells (10) may be formed on the upper surface of the bottom portion (210). The plurality of battery cells (10) may be configured to be arranged in a parallel manner along the second direction (X direction) in an upright state.

[0117] The first and second side walls (220, 230) are perpendicular to the bottom portion (210) and face each other. Among the side surfaces of the tray, those other than the first and second side walls (220, 230) may have an open structure. That is, when the tray (200) containing the battery cell (10) is viewed from the front, both ends of the battery cell (10) in the width direction (Y direction) can be seen through the open side surface of the tray (200).

[0118] The upper frame (240) is positioned above the first and second side walls (220, 230) and may have a frame shape with an open center. The upper frame (240) faces the bottom portion (210) with the first and second side walls (220, 230) interposed therebetween.

[0119] Referring to FIGS. 13 and 14, the tray fixing member (140) may be ring-shaped, and the upper frame (240) may have a receiving groove (not shown) into which the tray fixing member (140) may be inserted. The receiving groove may be formed so that the ring-shaped tray fixing member (140) may be forcefully fitted into the receiving groove of the upper frame (240). The receiving groove may be formed to extend along the second direction (X direction). The upper frame (240) may be formed in a frame shape having a predetermined width direction length (c), and among the four sides of the upper frame (240), a pair of sides in the second direction (X direction) may be configured to be fastened to a plurality of ring-shaped tray fixing members (140). Accordingly, the tray (200) may be fixed to the turntable (130) by the tray fixing member (140).

[0120] Meanwhile, when the tray fixing members (140) are mutually spaced apart along the depth direction (X direction) of the rack, the depth direction (X direction) mutual spacing distance (L) of the tray fixing members (140) may be a length corresponding to a value (=a-2c) obtained by subtracting twice the width direction length (c) of the upper frame (240) from the depth direction (X direction) length (a) of the tray (200). Accordingly, when the turntable rotates, one side and the other side of the tray based on the depth direction of the rack can be stably fixed to the turntable by the tray fixing members.

[0121] FIG. 15 is a drawing showing a tray and a tray fixing member combined according to another embodiment of the present invention.

[0122] Referring to FIG. 15, a tray (300) according to another embodiment is configured such that battery cells (10) are stacked in multiple layers along the third direction (Z direction). That is, unlike the tray (200) illustrated in FIGS. 12 to 14, the tray (300) has a first bottom portion (311) and a second bottom portion (312), and the first bottom portion (311) and the second bottom portion (312) are sequentially positioned along the vertical direction (Z direction). In this case, in order to stably fix the tray (300) to the rack (100), the tray fixing members (141, 142) may also be arranged up / down along the vertical direction (Z direction) on a rotating plate (not illustrated).

[0123] Referring to FIG. 15, the tray fixing member may include a first tray fixing member (141) and a second tray fixing member (142), which are arranged to be spaced apart from each other along the third direction (Z direction). The first tray fixing member (141) may be fastened to the upper frame (340), and the second tray fixing member (142) may be fastened to the second bottom portion (312). As long as the second bottom portion (312) has a structure that can be fastened to the tray fixing member, there are no particular limitations on its shape and fastening method. In some embodiments, the front end of the second bottom portion (312) may have a structure that corresponds to the shape of the ring-shaped second tray fixing member (142), into which the second tray fixing member (142) can be fitted. In another embodiment, the lower surface of the second bottom portion (312) may be provided with a fastening groove (not shown) into which the front end of the tray fixing member (140) is inserted. In the exemplary embodiments described above, the tray fixing member may be configured to be fastened to the upper frame and / or the bottom portion.

[0124] A battery cell storage device according to exemplary embodiments of the present invention is configured to rotate trays stored in a rack, such that battery cells that were previously in a horizontal state can be converted to an inclined state by the rotation of the trays. As the battery cells are tilted, the impregnation efficiency of the electrolyte increases, ultimately shortening the aging time.

[0125]

[0126] The present invention has been described in more detail through drawings and examples. However, the configurations described in the drawings or examples described in this specification are merely embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist as of the time of this application.

Claims

1. As a rack for loading battery cell trays, Multiple pockets with vertical partition walls; a turntable configured to rotate clockwise and / or counterclockwise; and A tray fixing member coupled to the above-mentioned turntable and configured to fix a tray stored inside the above-mentioned pocket; A rack characterized in that the above-mentioned turntable is installed on the above-mentioned vertical partition wall.

2. In paragraph 1, A rack characterized in that the rotation axis of the above-mentioned turntable is parallel to the first direction (Y direction).

3. In paragraph 1, Each of the above pockets is provided with a pair of first and second rotating plates, A rack characterized in that the first rotating plate is installed on a vertical partition wall on one side of the first direction (Y direction), and the second rotating plate is installed on a vertical partition wall on the other side of the first direction (Y direction).

4. In paragraph 1, A rack characterized in that the above tray fixing member has a ring shape.

5. In paragraph 1, A rack characterized in that the turntable is configured to be connectable to the vertical partition wall and is configured to be detachable from the vertical partition wall.

6. In paragraph 1, A plurality of tray fixing members are provided on one turntable, A rack characterized in that the plurality of tray fixing members are mutually spaced apart along the second direction (X direction).

7. In paragraph 1, A rack characterized in that the above pocket has an open structure at the top and / or bottom.

8. In paragraph 1, The above tray fixing member is, A rack characterized in that the tray is positioned at a height such that it can rotate within the pocket.

9. A tray configured to accommodate battery cells; and a rack for loading the above trays; The above rack, A plurality of pockets formed by vertical partition walls; a turntable configured to rotate clockwise and / or counterclockwise; and A tray fixing member coupled to the above-mentioned turntable and configured to fix a tray stored inside the above-mentioned pocket; A battery cell storage device characterized in that the above-mentioned rotating plate is installed on the above-mentioned vertical partition wall.

10. In paragraph 9, The above tray, bottom; First and second side walls perpendicular to the floor and facing each other; and A battery cell storage device characterized by including an upper frame having an open center and positioned on the upper portion of the first and second side walls.

11. In paragraph 10, A battery cell storage device wherein the tray fixing member is configured to be fastened to the upper frame and / or the bottom portion.

12. In paragraph 9, A battery cell storage device, characterized in that the rotation axis of the above-mentioned rotating plate is parallel to the first direction (Y direction).

13. In paragraph 9, Each of the above pockets is provided with a pair of first and second rotating plates, A battery cell storage device, characterized in that the first rotating plate is installed on a vertical partition wall on one side of the first direction (Y direction), and the second rotating plate is installed on a vertical partition wall on the other side of the first direction.

14. In paragraph 9, A battery cell storage device characterized in that the tray fixing member has a ring shape.

15. In paragraph 9, A battery cell storage device wherein the above-mentioned turntable is configured to be coupled to the vertical partition wall and is configured to be detachable from the vertical partition wall.

16. In paragraph 9, A battery cell storage device characterized in that the pocket has an open structure at the top and / or bottom.

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