Rack system for manufacturing battery cell and method for activating battery cell

Abstract

The present invention relates to a rack system (10) for manufacturing a battery cell, comprising: a case (100) comprising a seating space (110) in which one or more battery cells (50) are seated, an outer wall (120) surrounding the seating space (110), and a vent (130) formed in the outer wall (120) and allowing the seating space (110) to communicate with the outside; racks (200) each being capable of accommodating one or more cases (100) and each comprising one or more accommodation spaces (230) formed separately from each other; a duct (300) comprising one or more duct outlets (340) that respectively correspond to the one or more accommodation spaces (230) and respectively communicate with corresponding accommodation spaces (230); and a fan (400) for supplying air to the duct (300). Each duct outlet (340) may at least partially face the vent (130) of at least one case (100) accommodated in a corresponding accommodation space (230) among respective accommodation spaces (230) corresponding to respective duct outlets (340).

Description

Rack system for manufacturing battery cells and battery cell activation method

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2024-0194743 filed on December 23, 2024, and all contents disclosed in the document of said Korean patent application are incorporated herein as part of this specification.

[0002] The present invention relates to a rack system for manufacturing battery cells and a method for activating battery cells, wherein the uniformity of quality and accuracy of determining good and bad quality of battery cells are improved, process time is shortened, and processing capacity is increased.

[0003] After assembly and electrolyte injection, an activation process is performed on the secondary battery. A rack for housing multiple battery cells may be used during the activation process. The multiple battery cells can be activated, i.e., charged and / or aged, while housed in the rack. Since it is preferable for the charging and / or aging of the battery cells to be performed at a constant temperature, either high or low, the rack may be placed inside a chamber maintained at a constant temperature.

[0004] Specifically, the rack may include multiple storage compartments, and one or more cases may be stored in each compartment. Multiple battery cells may be seated in each case. Each storage compartment of the rack may be enclosed on all sides except the front side by partition walls to prevent the spread of fire or explosion of the battery cells to the surroundings.

[0005] As such, since each storage space in the rack is blocked, it is difficult to charge and / or age multiple battery cells stored in the rack at a constant temperature. Consequently, the uniformity of battery cell quality and the accuracy of determining good or bad quality (e.g., detecting low-voltage defects) are reduced. Furthermore, since it takes a long time to heat or cool the multiple battery cells stored in the rack to the target temperature, the activation process time increases and the rack's processing capacity decreases.

[0006] Therefore, a method is required that can maintain the temperature of multiple battery cells stored in a rack uniformly and can rapidly and effectively heat or cool the battery cells stored in the rack.

[0007] A related prior art document is Korean Published Patent No. 10-2023-0007655.

[0008] The present invention has been devised to solve the aforementioned problems and aims to provide a rack system for manufacturing battery cells and a method for activating battery cells, wherein the temperature of the battery cells stored in the rack can be maintained uniformly and the battery cells stored in the rack can be heated or cooled quickly and effectively.

[0009] The present invention aims to provide a battery cell manufacturing rack system and a battery cell activation method that improve the quality uniformity and accuracy of determining good and bad quality of battery cells, shorten process time, and increase the processing capacity of the battery cell manufacturing rack system.

[0010] The present invention aims to provide a rack system for manufacturing battery cells and a method for activating battery cells, which reduce manufacturing, installation, and maintenance costs and improve energy efficiency.

[0011] The present invention aims to provide a rack system for manufacturing battery cells and a method for activating battery cells, wherein a separate space for duct installation is unnecessary or minimized, and conventional racks can be used without significant modification.

[0012] The technical problems of the present invention are not limited to the purposes mentioned above, and other unmentioned purposes and advantages of the present invention may be understood from the following description and will be more clearly understood by the embodiments of the present invention. Furthermore, it will be readily apparent that the purposes and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims.

[0013] To solve the above-mentioned problem, the present invention provides a rack system (10) for manufacturing battery cells comprising a case (100), a rack (200), a duct (300), and a fan (400).

[0014] The above case (100) may include a seating space (110), an outer wall (120), and a ventilation opening (130).

[0015] One or more battery cells (50) can be placed in the above-mentioned mounting space (110).

[0016] The above outer wall (120) can surround the above seating space (110).

[0017] The above ventilation opening (130) can be formed in the above outer wall (120).

[0018] The above ventilation opening (130) can connect the above seating space (110) to the outside.

[0019] The above rack (200) may include one or more storage spaces (230).

[0020] One or more of the above cases (100) can be stored in each of the above storage spaces (230).

[0021] The above one or more storage spaces (230) can be formed separately from each other.

[0022] The above duct (300) may include one or more duct vents (340).

[0023] The above one or more duct vents (340) can each correspond to the above one or more storage spaces (230).

[0024] Each of the above duct vents (340) can be connected to each of the corresponding storage spaces (230).

[0025] The above fan (400) can supply air to the above duct (300).

[0026] Each of the above duct air outlets (340) may at least partially face each other with the vent (130) of at least one case (100) that is stored in a corresponding storage space (230) corresponding to each of the above duct air outlets (340).

[0027] In one embodiment, a plurality of the cases (100) can be stored in each of the storage spaces (230).

[0028] Each of the above duct air outlets (340) may include a plurality of sub-air outlets (342).

[0029] The above multiple sub-vents (342) can be connected to the corresponding storage space (230).

[0030] The above plurality of sub-vents (342) can each correspond to the above plurality of cases (100) that can be stored in the corresponding storage space (230).

[0031] Each of the sub-air outlets (342) of each of the above-mentioned duct air outlets (340) may be stored in the corresponding storage space (230) and may at least partially face each other with the vent (130) of each of the above-mentioned cases (100) corresponding to each of the sub-air outlets (342).

[0032] In one embodiment, each of the sub-air outlets (342) of each of the duct air outlets (340) may be housed in the corresponding storage space (230) and may face each other adjacently with the vent (130) of each of the cases (100) corresponding to each of the sub-air outlets (342).

[0033] In one embodiment, the ventilation opening (130) may include a plurality of case holes (H1).

[0034] The plurality of case holes (H1) can be formed spaced apart from each other on one side of the outer wall (120).

[0035] The above plurality of case holes (H1) can connect the above seating space (110) to the outside.

[0036] Each of the above duct air outlets (340) may include a plurality of duct holes (H3).

[0037] The above plurality of duct holes (H3) can be connected to the corresponding storage space (230).

[0038] The above plurality of duct holes (H3) can be formed spaced apart from each other.

[0039] The plurality of duct holes (H3) of each of the above-mentioned duct air outlets (340) can each partially face each of the plurality of case holes (H1) of the ventilation opening (130) of at least one case (100).

[0040] In one embodiment, the ventilation opening (130) may include a plurality of case holes (H1).

[0041] The plurality of case holes (H1) can be formed spaced apart from each other on one side of the outer wall (120).

[0042] The above plurality of case holes (H1) can connect the above seating space (110) to the outside.

[0043] Each of the above sub-air outlets (342) of each of the above duct air outlets (340) may include a plurality of duct holes (H3).

[0044] The above plurality of duct holes (H3) can be connected to the corresponding storage space (230).

[0045] The above plurality of duct holes (H3) can be formed spaced apart from each other.

[0046] The plurality of duct holes (H3) of each of the sub-air outlets (342) of each of the above-mentioned duct outlets (340) can each be stored in the corresponding storage space (230) and at least partially face each of the plurality of case holes (H1) of the ventilation holes (130) of each of the above-mentioned cases (100) corresponding to each of the sub-air outlets (342).

[0047] In one embodiment, the case (100) may be formed by stacking one or more trays (102) on the upper or lower side.

[0048] Each of the above trays (102) may include a first mounting space (112), a first outer wall (122), and a first ventilation opening (132).

[0049] One or more of the battery cells (50) can be placed in the first mounting space (112).

[0050] The first outer wall (122) can surround the first seating space (112).

[0051] The first ventilation opening (132) can be formed in the first outer wall (122).

[0052] The first ventilation opening (132) can connect the first seating space (112) to the outside.

[0053] The first ventilation opening (132) may include one or more tray holes (H2).

[0054] The above one or more tray holes (H2) may be formed spaced apart from each other on one side of the direction intersecting the vertical direction of the first outer wall (122).

[0055] The above one or more tray holes (H2) can connect the first seating space (112) to the outside.

[0056] The above-mentioned mounting space (110), outer wall (120), and ventilation opening (130) may each include the first mounting space (112), the first outer wall (122), and the first ventilation opening (132) of the above-mentioned one or more trays (102).

[0057] The plurality of case holes (H1) may include the one or more tray holes (H2) of the first ventilation holes (132) of the one or more trays (102).

[0058] In one embodiment, the spacing between the centers of the plurality of duct holes (H3) of each of the duct air outlets (340) may correspond to the spacing between the centers of the plurality of case holes (H1) of the ventilation opening (130) of at least one case (100).

[0059] In one embodiment, the spacing between the centers of the plurality of duct holes (H3) of each sub-air outlet (342) of each duct air outlet (340) may correspond to the spacing between the centers of the plurality of case holes (H1) of the ventilation holes (130) of each case (100) corresponding to each sub-air outlet (342) that are stored in the corresponding storage space (230).

[0060] In one embodiment, the case (100) can be inserted into each of the storage spaces (230) from the front or rear.

[0061] The plurality of case holes (H1) may be formed on one side in a direction intersecting the front and rear directions of the outer wall (120).

[0062] Each of the above duct holes (H3) may be in the form of an elongated hole extending to the front or rear.

[0063] In one embodiment, the duct (300) may include one or more first ducts (310).

[0064] Each of the above first ducts (310) may be positioned adjacent to the right or left side of at least one storage space (230).

[0065] At least one duct air outlet (340) corresponding to each of the at least one storage space (230) may be formed on the left or right side of each of the first ducts (310).

[0066] In one embodiment, the rack (200) may include a plurality of storage spaces (230).

[0067] The above plurality of storage spaces (230) can be arranged in a grid at least in the vertical and horizontal directions.

[0068] The above plurality of storage spaces (230) may be arranged in the above vertical direction P (P is a natural number greater than or equal to 2).

[0069] Each of the above first ducts (310) may be positioned adjacent to the right or left side of the P storage spaces (230) arranged in the vertical direction.

[0070] Each of the above first ducts (310) can be formed to extend upward or downward.

[0071] The P storage spaces (230) arranged in the vertical direction and the P corresponding duct air outlets (340) can be formed vertically arranged in each of the first ducts (310).

[0072] Each of the above P duct air outlets (340) may be formed on the left or right side of each of the above first ducts (310).

[0073] In one embodiment, the P duct air outlets (340) may be entirely formed on the left side of each of the first ducts (310) or entirely formed on the right side of each of the first ducts (310).

[0074] In one embodiment, R (R is a natural number greater than or equal to 2) cases (100) can be stored in each of the storage spaces (230).

[0075] The R cases (100) stored in each of the above storage spaces (230) can be arranged side by side in the front or rear.

[0076] Each of the above duct air outlets (340) may include R sub-air outlets (342).

[0077] The above R sub-vents (342) can be connected to the corresponding storage space (230).

[0078] The above R sub-vents (342) can each correspond to the R cases (100) that can be stored in the corresponding storage space (230).

[0079] Each of the sub-air outlets (342) of each of the above-mentioned duct air outlets (340) may be stored in the corresponding storage space (230) and may at least partially face each other with the vent (130) of each of the above-mentioned cases (100) corresponding to each of the sub-air outlets (342).

[0080] Each of the above first ducts (310) may include the R first sub-ducts (312).

[0081] The above R first sub-ducts (312) may be positioned adjacent to the right or left side of the above at least one storage space (230).

[0082] The above R first sub-ducts (312) can be separated from each other.

[0083] Each of the R sub-ducts (342) of each of the R first sub-ducts (312) of each of the first ducts (310) may have R sub-ducts (342) formed on the left or right side of each of the at least one duct air outlet (340).

[0084] In addition, to solve the above-mentioned problem, the present invention provides a rack system (10) for manufacturing battery cells comprising a case (100), a rack (200), a duct (300), and a fan (400).

[0085] The above case (100) may include a seating space (110).

[0086] One or more battery cells (50) can be placed in the above-mentioned mounting space (110).

[0087] The above rack (200) may include one or more storage spaces (230).

[0088] A plurality of the above cases (100) can be stored in each of the above storage spaces (230).

[0089] The above one or more storage spaces (230) can be formed separately from each other.

[0090] The above duct (300) may include one or more duct vents (340).

[0091] The above one or more duct vents (340) can each correspond to the above one or more storage spaces (230).

[0092] One or more of the above duct vents (340) can be connected to each of the corresponding storage spaces (230).

[0093] The above fan (400) can supply air to the above duct (300).

[0094] The plurality of cases (100) stored in each of the above storage spaces (230) can be arranged side by side in the front or rear.

[0095] Each of the above-mentioned duct vents (340) may include R (where R is a natural number greater than or equal to 2) sub-vents (342).

[0096] The above R sub-air outlets (342) can be connected to corresponding storage spaces (230), which are each storage spaces (230) corresponding to each of the above duct outlets (340).

[0097] The above duct (300) may include one or more first ducts (310).

[0098] Each of the above first ducts (310) may be positioned adjacent to the right or left side of at least one storage space (230).

[0099] Each of the above first ducts (310) may include the R first sub-ducts (312).

[0100] The above R first sub-ducts (312) may be positioned adjacent to the right or left side of the above at least one storage space (230).

[0101] The above R first sub-ducts (312) can be arranged side by side in the front or rear.

[0102] The above R first sub-ducts (312) can be separated from each other.

[0103] At least one duct air outlet (340) corresponding to each of the at least one storage space (230) may be formed on the left or right side of each of the first ducts (310).

[0104] Each of the R sub-ducts (342) of each of the R first sub-ducts (312) of each of the first ducts (310) may have R sub-ducts (342) formed on the left or right side of each of the at least one duct air outlet (340).

[0105] In one embodiment, the rack (200) may include a plurality of storage spaces (230).

[0106] The above plurality of storage spaces (230) can be arranged in a grid at least in the vertical and horizontal directions.

[0107] The above plurality of storage spaces (230) may be arranged in the above vertical direction P (P is a natural number greater than or equal to 2).

[0108] The R first sub-ducts (312) of each of the first ducts (310) may be arranged adjacent to the right or left side of the P storage spaces (230) arranged in the vertical direction.

[0109] The R first sub-ducts (312) of each of the first ducts (310) can be arranged side by side in the front or rear.

[0110] The R first sub-ducts (312) of each of the first ducts (310) may be formed to extend upward or downward.

[0111] In each of the above first sub-ducts (312), the P sub-air outlets (342) can be arranged vertically.

[0112] The above P sub-air outlets (342) may each be one of the P sub-air outlets (342) corresponding to the P storage spaces (230) arranged in the vertical direction.

[0113] Each of the above P sub-air outlets (342) may be formed on the left or right side of each of the above first sub-ducts (312).

[0114] In one embodiment, the P sub-air outlets (342) may all be formed on the left side of each of the first sub-ducts (312) or all be formed on the right side of each of the first sub-ducts (312).

[0115] In one embodiment, the duct (300) may include one or more second ducts (320).

[0116] The above one or more second ducts (320) can each be directly connected to the above one or more first ducts (310).

[0117] One or more of the above second ducts (320) can be connected to the fan (400).

[0118] One or more of the above second ducts (320) may be formed to extend to the left or right.

[0119] In one embodiment, the duct (300) may include one or more second ducts (320).

[0120] The above one or more second ducts (320) can each be directly connected to the above one or more first ducts (310).

[0121] One or more of the above second ducts (320) can be connected to the fan (400).

[0122] One or more of the above second ducts (320) may be formed to extend to the left or right.

[0123] Each of the above second ducts (320) may include the R second sub-ducts (322).

[0124] The R second sub-ducts (322) can each be directly connected to the R first sub-ducts (312) of the respective first duct (310).

[0125] The above R second sub-ducts (322) can be connected to the fan (400).

[0126] The above R second sub-ducts (322) can be formed to extend to the left or right.

[0127] The above R second sub-ducts (322) can be separated from each other.

[0128] In one embodiment, the duct (300) may include one or more third ducts (330).

[0129] One or more of the above third ducts (330) may be formed to extend to the front or rear side.

[0130] Each of the above third ducts (330) can be connected to at least one of the above second ducts (320) and the fan (400).

[0131] In one embodiment, the duct (300) may include one or more third ducts (330).

[0132] One or more of the above third ducts (330) may be formed to extend to the front or rear side.

[0133] Each of the above third ducts (330) can be connected to at least one of the above second sub-ducts (322) and the fan (400).

[0134] In one embodiment, the plurality of storage spaces (230) may be arranged in a grid in the up-down direction, left-right direction, and front-back direction.

[0135] The above plurality of storage spaces (230) may be arranged in Q (where Q is a natural number greater than or equal to 2) and R (where R is a natural number greater than or equal to 2) directions, respectively, in the left-right direction and the front-back direction.

[0136] At least some of the first ducts (310) may be spaced apart in the left and right directions.

[0137] The above duct (300) may include a pair of the third ducts (330), a pair of the second ducts (320), and each of the first ducts (310).

[0138] The above pair of third ducts (330) can be connected to the fan (400).

[0139] The above pair of third ducts (330) can be placed on the front and rear sides of the fan (400), respectively.

[0140] The above pair of second ducts (320) can be branched to the left and right, respectively, from each of the above pair of third ducts (330).

[0141] Each of the above first ducts (310) can be connected to each of the above pair of second ducts (320) branched from each of the above pair of third ducts (330).

[0142] In addition, to solve the above-mentioned problem, the present invention provides a rack system (10) for manufacturing battery cells comprising a case (100), a rack (200), a duct (300), and a fan (400).

[0143] The above case (100) may include a seating space (110).

[0144] One or more battery cells (50) can be placed in the above-mentioned mounting space (110).

[0145] The above rack (200) may include a plurality of storage spaces (230).

[0146] One or more of the above cases (100) can be stored in each of the above storage spaces (230).

[0147] The above multiple storage spaces (230) can be formed separately from each other.

[0148] The above duct (300) may include a plurality of duct air outlets (340).

[0149] The plurality of duct vents (340) can each correspond to the plurality of storage spaces (230).

[0150] The plurality of duct vents (340) can be connected to each corresponding storage space (230).

[0151] The above fan (400) can supply air to the above duct (300).

[0152] The above plurality of storage spaces (230) can be arranged in a grid in the up-down direction, left-right direction, and front-back direction.

[0153] The above plurality of storage spaces (230) can be arranged in the up-down direction, left-right direction, and front-back direction, respectively.

[0154] The above duct (300) may include a pair of third ducts (330), a pair of second ducts (320), and a first duct (310).

[0155] The above pair of third ducts (330) can be connected to the fan (400).

[0156] The above pair of third ducts (330) can be placed at the front and rear sides of the fan (400), respectively.

[0157] The above pair of third ducts (330) can be formed to extend to the front and rear sides, respectively.

[0158] The above pair of second ducts (320) can be branched to the left and right, respectively, from each of the above pair of third ducts (330).

[0159] The above pair of second ducts (320) can be formed to extend to the left and right, respectively.

[0160] The first duct (310) can be connected to each of the pair of second ducts (320) branched from each of the pair of third ducts (330).

[0161] The first duct (310) can be formed to extend upward or downward.

[0162] Each of the above first ducts (310) may be positioned adjacent to the right or left side of the plurality of storage spaces (230) arranged in the vertical direction.

[0163] A plurality of duct air outlets (340) corresponding to each of the plurality of storage spaces (230) arranged in the vertical direction can be formed vertically arranged in each of the first ducts (310).

[0164] Each of the plurality of duct air outlets (340) may be formed on the left or right side of each of the first ducts (310).

[0165] In one embodiment, the plurality of storage spaces (230) may be arranged in the grid.

[0166] The above plurality of storage spaces (230) can be arranged in Q (Q is a natural number greater than or equal to 2) in the left and right directions.

[0167] At least some of the first ducts (310) may be spaced apart in the left and right directions.

[0168] The above duct (300) may include a pair of third ducts (330), a pair of second sub-ducts (322), and the first sub-duct (312).

[0169] The above pair of third ducts (330) can be connected to the fan (400).

[0170] The above pair of third ducts (330) can be placed on the front and rear sides of the fan (400), respectively.

[0171] The above pair of third ducts (330) may be formed to extend forward or backward.

[0172] The above pair of second sub-ducts (322) can be branched to the left and right, respectively, from each of the above pair of third ducts (330).

[0173] The above pair of second sub-ducts (322) can be formed to extend to the left or right.

[0174] The first sub-duct (312) can be connected to each of the pair of second sub-ducts (322) branched from each of the pair of third ducts (330).

[0175] In one embodiment, a plurality of the storage spaces (230) may be arranged in a grid at least in the vertical and horizontal directions.

[0176] The above plurality of storage spaces (230) can be arranged in Q (Q is a natural number greater than or equal to 2) in the left and right directions.

[0177] The above duct (300) may include the above Q first ducts (310).

[0178] The above Q first ducts (310) may be arranged adjacently to the right side or adjacently to the left side of the above Q storage spaces (230) arranged in the left and right directions.

[0179] Q duct air outlets (340) corresponding to each of the Q storage spaces (230) arranged in the left and right directions may be formed on the left side of each of the first ducts (310) adjacent to the right side of each of the Q storage spaces (230), or formed on the right side of each of the first ducts (310) adjacent to the left side of each of the Q storage spaces (230).

[0180] In one embodiment, the plurality of storage spaces (230) may be arranged in a grid at least in the vertical and horizontal directions.

[0181] The above plurality of storage spaces (230) can be arranged in Q (Q is a natural number greater than or equal to 2) in the left and right directions.

[0182] The above duct (300) may include the above Q first ducts (310).

[0183] The above Q first ducts (310) may be arranged adjacently to the right side or adjacently to the left side of the above Q storage spaces (230) arranged in the left and right directions.

[0184] Q duct air outlets (340) corresponding to each of the Q storage spaces (230) arranged in the left and right directions may be formed on the left side of each of the first ducts (310) adjacent to the right side of each of the Q storage spaces (230), or formed on the right side of each of the first ducts (310) adjacent to the left side of each of the Q storage spaces (230).

[0185] Accordingly, the R sub-air outlets (342) of each of the Q storage spaces (230) arranged in the left and right directions and each of the Q duct air outlets (340) corresponding thereto may be formed on the left side of each of the R first sub-ducts (312) of each of the first ducts (310) arranged adjacent to the right side of each of the Q storage spaces (230), or formed on the right side of each of the R first sub-ducts (312) of each of the first ducts (310) arranged adjacent to the left side of each of the Q storage spaces (230).

[0186] In one embodiment, the fan (400) may be installed on the upper or lower part of the rack (200).

[0187] In one embodiment, the rack system (10) for manufacturing battery cells may further include a chamber and a main duct.

[0188] The chamber can accommodate the rack (200), duct (300), and fan (400).

[0189] The above main duct can supply air into the chamber.

[0190] The above main duct can be installed at the top of the chamber.

[0191] The above fan (400) can be installed at the bottom of the rack (200).

[0192] In addition, to solve the above-mentioned problem, the present invention provides a battery cell activation method (S700) comprising a case storage process (S710) and an activation process (S720).

[0193] In the above case storage process (S710), each of the above cases (100) on which one or more battery cells (50) are seated can be stored in each of the above storage spaces (230) of the rack (200).

[0194] In the above activation process (S720), one or more battery cells (50) placed in each case (100) stored in each storage space (230) can be activated.

[0195] In the above case storage process (S710), each of the above duct air outlets (340) can be positioned so as to face at least partially with the ventilation port (130) of at least one of the above cases (100) that is stored in the corresponding storage space (230), which is the respective storage space (230) corresponding to each of the above duct air outlets (340).

[0196] In the above activation process (S720), the fan (400) can be operated to supply air to one or more storage spaces (230) through the duct (400).

[0197] In one embodiment, a plurality of the cases (100) can be stored in each of the storage spaces (230).

[0198] Each of the above duct air outlets (340) may include a plurality of sub-air outlets (342).

[0199] The above multiple sub-vents (342) can be connected to the corresponding storage space (230).

[0200] The above plurality of sub-vents (342) can each correspond to the above plurality of cases (100) that can be stored in the corresponding storage space (230).

[0201] In the above case storage process (S710), each of the sub-air outlets (342) of each of the above duct air outlets (340) can be stored in the corresponding storage space (230) and positioned so as to face at least partially with the vent (130) of each of the above cases (100) corresponding to each of the sub-air outlets (342).

[0202] In one embodiment, the ventilation opening (130) may include a plurality of case holes (H1).

[0203] The plurality of case holes (H1) may be formed spaced apart from each other on one side of the outer wall (120) of the case (100).

[0204] The plurality of case holes (H1) above can connect the seating space (110) of the case (100) to the outside.

[0205] Each of the above duct air outlets (340) may include a plurality of duct holes (H3).

[0206] The above plurality of duct holes (H3) can be connected to the corresponding storage space (230).

[0207] The above plurality of duct holes (H3) can be formed spaced apart from each other.

[0208] In the above case storage process (S710), the plurality of duct holes (H3) of each of the duct air outlets (340) can be positioned so as to face each of the plurality of case holes (H1) of the ventilation opening (130) of at least one case (100) at least partially.

[0209] In one embodiment, the ventilation opening (130) may include a plurality of case holes (H1).

[0210] The plurality of case holes (H1) can be formed spaced apart from each other on one side of the outer wall (120).

[0211] The above plurality of case holes (H1) can connect the above seating space (110) to the outside.

[0212] Each of the above sub-air outlets (342) of each of the above duct air outlets (340) may include a plurality of duct holes (H3).

[0213] The above plurality of duct holes (H3) can be connected to the corresponding storage space (230).

[0214] The above plurality of duct holes (H3) can be formed spaced apart from each other.

[0215] In the above case storage process (S710), the plurality of duct holes (H3) of each sub-air outlet (342) of each duct air outlet (340) can be stored in the corresponding storage space (230) and positioned so as to face at least partially each of the plurality of case holes (H1) of the ventilation opening (130) of each case (100) corresponding to each sub-air outlet (342).

[0216] According to embodiments of the present invention, air can be smoothly introduced into the interior of the case (100) stored in each storage space (230) of the rack (200), so that the temperature of the battery cell (50) stored in the rack (200) can be maintained uniformly and the battery cell (50) stored in the rack (200) can be heated or cooled quickly and effectively. Accordingly, the uniformity of quality and the accuracy of determining good or bad quality of the battery cell (50) are improved, the process time is shortened, and the processing capacity of the rack system (10) for manufacturing battery cells can be increased.

[0217] According to embodiments of the present invention, even if a plurality of cases (100) are stored in each storage space (230) of a rack (200), air can be smoothly introduced into the interior of the plurality of cases (100) stored in each storage space (230).

[0218] According to embodiments of the present invention, air can be smoothly introduced into the interior of a stack of trays (102) (i.e., case (100)) stored in each storage space (230) of a rack (200).

[0219] According to embodiments of the present invention, since each duct hole (H3) has a width in the front-rear direction, air can be effectively introduced into the case (100) even if the position of the case (100) stored in the front or rear of each storage space (230) of the rack (200) has an error or tolerance in the front-rear direction.

[0220] In addition, since each duct hole (H3) has a width in the direction intersecting the front-rear direction (e.g., up-down direction), the pressure of the air blown from the duct hole (H3) increases, so that air can be effectively introduced into the case (100).

[0221] According to embodiments of the present invention, the structure of a duct (300) connected to one or more storage spaces (230) can be simplified. Accordingly, air can be easily and effectively introduced into the interior of a case (100) stored in each storage space (230) of a rack (200). In addition, the manufacturing, installation, and maintenance costs of a rack system (10) for manufacturing battery cells can be reduced and energy efficiency can be improved.

[0222] Additionally, a duct (300) may be installed in a space provided to separate or partition each storage space (230) in the left and right directions (e.g., a space where a side wall (226) is placed or a space between a pair of column frames (210)). Accordingly, a separate space for installing the duct (300) is unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0223] According to embodiments of the present invention, the structure of a duct (300) connected to a plurality of storage spaces (230) having a grid arrangement of a plurality of rows (P layers) can be simplified. Accordingly, air can be easily and effectively introduced into the interior of the case (100) stored in each storage space (230) of the rack (200). In addition, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced and energy efficiency can be improved.

[0224] Additionally, a duct (300) may be installed in a space provided to separate or partition each row of a plurality of storage spaces (230) having a grid arrangement of multiple rows (P layers) in the left-right direction (e.g., a space where a side wall (226) is placed or a space between a pair of column frames (210). Accordingly, a separate space for installing the duct (300) is unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0225] Additionally, since each first duct (310) extends upward or downward, the fan (400) can be installed at the top or bottom of the rack (200). Accordingly, a separate space for installing the fan (400) may be unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0226] According to embodiments of the present invention, a plurality of first sub-ducts (312) can individually blow air into a plurality of cases (100) stored in each storage space (230) of a rack (200). Accordingly, air can be uniformly and effectively introduced into the interior of the plurality of cases (100) stored in each storage space (230) of the rack (200).

[0227] Additionally, multiple first sub-ducts (312) of each first duct (310) may be installed in a space provided to separate or partition each storage space (230) in the left and right directions (e.g., a space where a side wall (226) is placed or a space between a pair of column frames (210)). Accordingly, a separate space for installing the duct (300) is unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0228] Additionally, since R first sub-ducts (312) are separated from each other, a space can be formed between adjacent first sub-ducts (312), and a support structure (e.g., a column frame (210)) can be placed in this space. Accordingly, the structural stability of the rack (200) can be improved. Furthermore, a conventional rack (200) can be used without significant modification.

[0229] According to embodiments of the present invention,

[0230] According to embodiments of the present invention, the structure of a duct (300) connected to a plurality of storage spaces (230), each having a grid arrangement of a plurality of rows (P layers) and capable of housing a plurality of cases (100) (R cases), can be simplified. Accordingly, air can be easily, effectively, and uniformly introduced into the interior of the plurality of cases (100) stored in each storage space (230) of the rack (200). In addition, the manufacturing, installation, and maintenance costs of the battery cell manufacturing rack system (10) can be reduced and energy efficiency can be improved.

[0231] Additionally, multiple first sub-ducts (312) of each first duct (310) may be installed in a space provided to separate or partition each row of multiple storage spaces (230) having a grid arrangement of multiple rows (P layers) in the left-right direction (e.g., a space where a side wall (226) is placed or a space between a pair of column frames (210). Accordingly, a separate space for installing the duct (300) is unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0232] Additionally, since each first sub-duct (312) extends upward or downward, the fan (400) can be installed at the top or bottom of the rack (200). Accordingly, a separate space for installing the fan (400) may be unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0233] Additionally, since R first sub-ducts (312) are separated from each other, a space extending upward or downward can be formed between first sub-ducts (312) adjacent to each other in the front-rear direction, and a column frame (210) extending in the vertical direction can be placed in this space. Accordingly, the structural stability of the rack (200) can be improved. Furthermore, a conventional rack (200) can be used without significant modification.

[0234] According to embodiments of the present invention, since the second duct (320) or the second sub-duct (322) is extended to the left or right, the uniformity of the internal air pressure of the first duct (310) or the first sub-duct (312) can be improved in the front-rear direction. Accordingly, even if the front-rear width of the first duct (310), the first sub-duct (312) and / or the case (100) is large, air can be uniformly introduced into the case (100). Therefore, the temperature of the plurality of battery cells (50) installed in the case (100) of each storage space (230) can be maintained uniformly, and the plurality of battery cells (50) installed in the case (100) of each storage space (230) can be heated and cooled uniformly and quickly.

[0235] Additionally, a single fan (400) can supply air to multiple first ducts (310) or first sub-ducts (312) spaced apart in the left and right directions. Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0236] According to embodiments of the present invention, since the second sub-duct (322) is extended to the left or right, the uniformity of the air pressure in the front-rear direction within the first sub-duct (312) can be improved. Accordingly, even if the front-rear width of the first sub-duct (312) and / or the case (100) is large, air can be uniformly introduced into the case (100). Therefore, the temperature of the plurality of battery cells (50) installed in the plurality of cases (100) of each storage space (230) can be maintained uniformly, and the plurality of battery cells (50) installed in the plurality of cases (100) of each storage space (230) can be heated and cooled uniformly and quickly.

[0237] Additionally, air can be supplied to multiple first sub-ducts (312) spaced apart in the left and right directions using a single fan (400). Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0238] According to embodiments of the present invention, even if the second duct (320) is spaced apart from the fan (400) in the front-rear direction, it can be connected to the fan (400) through the third duct (330).

[0239] Additionally, air can be supplied to multiple second ducts (320) spaced apart in the front and rear directions using a single fan (400). Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0240] According to embodiments of the present invention, even if the second sub-duct (300) is spaced apart from the fan (400) in the front-rear direction, it can be connected to the fan (400) through the third duct (330).

[0241] Additionally, air can be supplied to multiple second sub-ducts (322) spaced apart in the front and rear directions using a single fan (400). Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0242] According to embodiments of the present invention, air can be supplied to at least P (e.g., 3)*2*2 duct air outlets (340) or sub-air outlets (342) with one fan (400). Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0243] Additionally, multiple second ducts (320), multiple third ducts (330), and a fan (400) can be installed on the upper or lower part of the rack (200). Accordingly, a separate space for installing the ducts (300) and the fan (400) may be unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0244] According to embodiments of the present invention, air can be supplied to a plurality of duct air outlets (340) in the up-down, left-right, and front-back directions using a single fan (400). Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0245] Additionally, multiple first ducts (310) can be installed in a space provided to separate or partition multiple storage spaces (230) in the left and right directions, and multiple second ducts (320), multiple third ducts (330), and a fan (400) can be installed on the upper or lower part of the rack (200). Accordingly, a separate space for installing the ducts (300) and the fan (400) may be unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0246] In addition, since the second duct (320) connected to the first duct (310) extends to the left or right, the uniformity of the internal air pressure of the first duct (310) can be improved in the front-rear direction.

[0247] According to embodiments of the present invention, each first duct (310) can individually blow air into each row of a plurality of storage spaces (230) having a grid arrangement of a plurality of rows (Q rows). Accordingly, air can be uniformly and effectively introduced into the interior of the case (100) stored in each storage space (230) of the rack (200).

[0248] In addition, since each first duct (310) blows air into only one of the storage spaces (230) on the left and right sides, the blowing pressure increases so that air can be effectively drawn into the case (100).

[0249] According to embodiments of the present invention, a plurality of first sub-ducts (312) of each first duct (310) can blow air into each row of a plurality of storage spaces (230). Accordingly, air can be uniformly and effectively introduced into the interior of a plurality of cases (100) stored in each storage space (230) of a rack (200).

[0250] In addition, since the multiple first sub-ducts (312) of each first duct (310) blow air only into one of the storage spaces (230) on the left and right sides, the pressure blown from the multiple first sub-ducts (312) of each first duct (310) increases, so that air can be effectively introduced into the case (100).

[0251] According to embodiments of the present invention, a separate space for installing the fan (400) may be unnecessary or minimized, and a conventional rack (200) may be used without significant modification.

[0252] According to embodiments of the present invention, air inside the chamber can be effectively circulated. Accordingly, the temperature of the battery cell (50) stored in the rack (200) can be maintained uniformly, and the battery cell (50) stored in the rack (200) can be heated and cooled quickly and effectively.

[0253] In addition to the effects described above, the specific effects of the present invention are described together with the specific details for implementing the invention below.

[0254] FIGS. 1 to 6 are a perspective view, an exploded perspective view, and a front view of a rack system for manufacturing a battery cell according to one embodiment of the present invention.

[0255] Figure 7 is a cross-sectional view of Figure 1 at 7-7'.

[0256] Figure 8 is an enlarged view of part A of Figure 8.

[0257] Figure 9 is a cross-sectional view of Figure 1 at 9-9'.

[0258] Figure 10 is an enlarged view of part A of Figure 9.

[0259] FIG. 11 is a perspective view showing the battery cell and case of FIG. 1 to FIG. 10.

[0260] FIGS. 12 to 14 are perspective views showing the side walls of FIGS. 1 to 10.

[0261] FIGS. 15 to 18 are perspective and bottom views showing the duct and fan of FIGS. 1 to 10.

[0262] Fig. 19 is a cross-sectional view of Fig. 15 at 19-19'.

[0263] FIG. 20 is an enlarged view of part A of FIG. 19.

[0264] FIG. 21 is a side view showing a part of the first sub-duct of FIG. 15 to FIG. 20.

[0265] FIG. 22 is a flowchart of a battery cell activation method according to one embodiment of the present invention.

[0266] [Explanation of the symbol]

[0267] 10: Rack system for battery cell manufacturing

[0268] 50: Battery cell

[0269] 100: Case 102: Tray

[0270] 110: Landing space 112: First landing space

[0271] 120: Outer wall 122: First outer wall

[0272] 130: Vent 132: First Vent

[0273] H1: Case hole H2: Tray hole

[0274] 200: Rack

[0275] 210: Column Frame

[0276] 220: Partition wall 221: Hollow

[0277] 222: Horizontal wall 224: Vertical wall

[0278] 226: Side wall 228: Rear wall

[0279] 229: Partition wall vent

[0280] 230: Storage space 240: Shelf

[0281] 300: Duct

[0282] 310: 1st Duct 312: 1st Sub-duct

[0283] 320: 2nd Duct 322: 2nd Sub-duct

[0284] 330: Third duct

[0285] 340: Duct vent 342: Sub vent

[0286] H3: Duct hole

[0287] 400: Fan

[0288] The aforementioned objectives, features, and advantages are described in detail below with reference to the attached drawings, thereby enabling those skilled in the art to easily implement the technical concept of the present invention. In describing the present invention, detailed descriptions of known technologies related to the present invention are omitted if it is determined that such descriptions would unnecessarily obscure the essence of the invention. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

[0289] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component.

[0290] Throughout the specification, unless specifically stated otherwise, each component may be singular or plural.

[0291] In the following, the statement that any configuration is placed on the "upper (or lower)" of a component or on the "upper (or lower)" of a component may mean not only that any configuration is placed in contact with the upper (or lower) surface of said component, but also that another configuration may be interposed between said component and any configuration placed on (or below) said component.

[0292] In addition, where it is stated that one component is "connected," "combined," or "connected" to another component, it should be understood that while the components may be directly connected or connected to each other, another component may be "interposed" between each component, or each component may be "connected," "combined," or "connected" through another component.

[0293] Singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "composed of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may be omitted or additional components or steps may be included.

[0294] FIGS. 1 to 6 are a perspective view, an exploded perspective view, and a front view of a rack system for manufacturing a battery cell according to an embodiment of the present invention. FIG. 7 is a cross-sectional view of section 7-7' of FIG. 1. FIG. 8 is an enlarged view of section A of FIG. 7. FIG. 9 is a cross-sectional view of section 9-9' of FIG. 1. FIG. 10 is an enlarged view of section A of FIG. 9. FIG. 11 is a perspective view showing the battery cell and case of FIGS. 1 to 10. FIGS. 12 to 14 are perspective views showing the side walls of FIGS. 1 to 10. FIGS. 15 to 18 are perspective and bottom views showing the duct and fan of FIGS. 1 to 10. FIG. 19 is a cross-sectional view of section 19-19' of FIG. 15. FIG. 20 is an enlarged view of section A of FIG. 19. FIG. 21 is a side view showing a part of the first sub-duct of FIG. 15 to 20. FIG. 22 is a flowchart of a battery cell activation method according to an embodiment of the present invention.

[0295] [First embodiment of a rack system for manufacturing battery cells]

[0296] Referring to FIGS. 1 to 10, a rack system (10) for manufacturing a battery cell according to the first embodiment may include a case (100), a rack (200), a duct (300), and a fan (400). The rack system (10) for manufacturing a battery cell may further include a chamber (not shown) and a main duct (not shown).

[0297] A rack system (10) for manufacturing battery cells can be used when manufacturing battery cells (50). For example, the rack system (10) for manufacturing battery cells can be used for activating (aging and / or charging and discharging) multiple battery cells (50). Below, we will examine each configuration of the rack system (10) for manufacturing battery cells.

[0298] The chamber (not shown) may be a sealed space in which the internal temperature is maintained at a constant level. The chamber may accommodate the rack (200), duct (300), and fan (400) described later. The chamber may be used for an activation process. For example, the chamber may be an aging or charging / discharging room for battery cells.

[0299] A main duct (not shown) may be connected to a chamber. The main duct may supply air into the chamber. The main duct may supply air at a constant temperature into the chamber. The main duct may be installed at the top of the chamber.

[0300] [case]

[0301] Referring further to FIG. 11, the case (100) may include a seating space (110), an outer wall (120), and a ventilation opening (130). The case (100) may be pulled out to the front or rear of the storage space (230) of the rack (200) described later.

[0302] One or more battery cells (50) can be placed in the mounting space (110).

[0303] The outer wall (120) can surround the seating space (110).

[0304] A ventilation opening (130) can be formed in the outer wall (120). The ventilation opening (130) can connect the seating space (110) to the outside.

[0305] The ventilation opening (130) may include a plurality of case holes (H1). The plurality of case holes (H1) may be formed spaced apart from each other on one side of the outer wall (120). For example, the ventilation opening (130) may include 36 case holes (H1) spaced apart from each other on the right side of the outer wall (120). The plurality of case holes (H1) may connect the seating space (110) to the outside.

[0306] When the case (100) is inserted into each storage space (230) from the front or rear, a plurality of case holes (H1) may be formed on one side (e.g., right side) of the direction that intersects the front and rear directions of the outer wall (120) (e.g., left and right directions).

[0307] Meanwhile, the case (100) may be formed by stacking one or more (e.g., six) trays (102) on the upper or lower side. Each tray (102) may include a first seating space (112), a first outer wall (122), and a first ventilation opening (132) (Fig. 10).

[0308] One or more battery cells (50) may be placed in the first mounting space (112). The first outer wall (122) may surround the first mounting space (112). The first ventilation opening (132) may be formed in the first outer wall (122). The first ventilation opening (132) may connect the first mounting space (112) to the outside.

[0309] The first ventilation opening (132) may include one or more tray holes (H2). One or more tray holes (H2) may be formed spaced apart from each other on one side of the direction that intersects the vertical direction of the first outer wall (122) (e.g., left-right direction). For example, the first ventilation opening (132) may include six tray holes (H2) spaced apart from each other on the right side of the first outer wall (122). One or more tray holes (H2) may connect the first seating space (112) to the outside.

[0310] The seating space (110), outer wall (120), and ventilation hole (130) of the aforementioned case (100) may each include a first seating space (112), a first outer wall (122), and a first ventilation hole (132) of one or more trays (102). The aforementioned plurality of case holes (H1) may include one or more tray holes (H2) of the first ventilation hole (132) of one or more trays (102). For example, 36 case holes (H1) may include a total of 36 tray holes (H2) of 6 trays (102).

[0311] [Rack]

[0312] The rack (200) may include a plurality of column frames (210). The rack (200) may include a partition wall (220). The rack (200) may include one or more or a plurality of storage spaces (230). The rack (200) may include one or more shelves (240) (Figs. 1 to 10).

[0313] Multiple column frames (210) may be formed to extend upward or downward. Multiple column frames (210) may be spaced apart from each other. The column frames (210) may be omitted.

[0314] The partition wall (220) can be connected to a plurality of column frames (210). The partition wall (220) can be arranged to connect the plurality of column frames (210) or placed between the plurality of column frames (210).

[0315] The partition wall (220) may define one or more storage spaces (230) described below. The partition wall (220) may block all sides (top, bottom, left side, right side, and rear) of the storage space (230) except for the front side. The partition wall (220) may prevent fire or explosion occurring in each storage space (230) from spreading to the surroundings.

[0316] The partition wall (220) may include one or more hollows (221). The partition wall (220) may include a plurality of horizontal walls (222) and a plurality of vertical walls (224). The partition wall (220) may include one or more partition wall vents (229).

[0317] One or more hollows (221) may be formed inside the partition wall (220) (Figs. 2, 3, 7, 13, 14). For example, one or more hollows (221) may be formed in a plurality of side walls (226) described later. One or more hollows (221) may be connected to one or more partition wall air vents (229). A duct (300) described later may be inserted into one or more hollows (221) (Figs. 7 to 10).

[0318] Multiple horizontal walls (222) may be formed to extend in a horizontal direction. Multiple horizontal walls (222) may be arranged side by side on the upper or lower side. Multiple horizontal walls (222) may define the upper and lower ends of each of one or more storage spaces (230). Each horizontal wall (222) may face the upper or lower end of a case (100) stored in a storage space (230) defined by each horizontal wall (222).

[0319] A plurality of vertical walls (224) may include a plurality of side walls (226) and rear walls (228).

[0320] Referring further to FIGS. 12 to 14, a plurality of side walls (226) may be formed to extend upward or downward and forward or backward. A plurality of side walls (226) may be arranged side by side on the left or right. A plurality of side walls (226) may define the left end and right end of each of one or more storage spaces (230). Each side wall (226) may face the left end or right end of the case (100) stored in the storage space (230) defined by each side wall (226).

[0321] Each of at least one side wall (226) may have a respective hollow (221). Each of at least one partition wall air vent (229) may have one or more of the partition wall air vents (229) formed in each of the at least one side wall (226). The partition wall air vents (229) will be described later.

[0322] The rear wall (228) may be formed to extend upward or downward and to the left or right. The rear wall (228) may define the rear end of each of one or more storage spaces (230). The rear wall (228) may face the rear end of the case (100) stored in the storage space (230) defined by the rear wall (228).

[0323] One or more partition wall vents (229) may be formed on the outer surface of a partition wall (220) (e.g., a side wall (226)). Each partition wall vent (229) may be in communication with each hollow (221). Each partition wall vent (229) may be in communication with the interior space of the partition wall (220) to the outside. Each partition wall vent (229) may be in communication with each storage space (230) defined by the portion where each partition wall vent (229) is formed (e.g., a part of the side wall (226)) (Figs. 7 to 10).

[0324] One or more partition wall air outlets (229) may correspond to one or more duct air outlets (340) described later. Each partition wall air outlet (229) may face or communicate with each duct air outlet (340) corresponding to each partition wall air outlet (229). The location, size, and shape of each partition wall air outlet (229) may correspond to the location, size, and shape of each duct air outlet (340) corresponding to each partition wall air outlet (229) (Figs. 7 to 10).

[0325] Meanwhile, unlike the drawing, at least a portion of the partition wall (220) may be replaced with a duct (300) described later. In this case, the one or more partition wall air outlets (229) described above may be one or more duct air outlets (340) described later.

[0326] One or more storage spaces (230) may be formed separately from one another. For example, one or more storage spaces (230) may be separated and defined by partition walls (220). For safety, each storage space (230) may have all sides (top, bottom, left side, right side, and rear) except the front side blocked by partition walls (220).

[0327] One or more cases (100) may be stored in each storage space (230). Multiple cases (e.g., R cases, where R is a natural number greater than or equal to 2) may be stored in each storage space (230). The R cases (100) stored in each storage space (230) may be arranged side by side in the front or rear (Figs. 5, 9).

[0328] Multiple storage spaces (230) can be arranged in a grid at least in the vertical and horizontal directions. In this case, P (where P is a natural number greater than or equal to 2) of the multiple storage spaces (230) can be arranged in the vertical direction. Additionally, Q (where Q is a natural number greater than or equal to 2) of the multiple storage spaces (230) can be arranged in the horizontal direction. For example, the multiple storage spaces (230) can be arranged in 3 rows and 4 columns (i.e., P=3, Q=4) as shown in the drawing.

[0329] Multiple storage spaces (230) can be arranged in a grid in the up-down direction, left-right direction, and front-back direction. At this time, Q (where Q is a natural number greater than or equal to 2) and R (where R is a natural number greater than or equal to 2) can be arranged in the left-right direction and front-back direction, respectively. That is, unlike the drawing, multiple storage spaces (230) can also be arranged in the front-back direction (e.g., 2, i.e., R=2).

[0330] One or more shelves (240) may be connected to a plurality of column frames (210) or partition walls (220). One or more shelves (240) may be placed in one or more storage spaces (230). Each shelf (240) may include a pair of supports placed at the left and right ends of each storage space (230). Each shelf (240) may be formed to extend forward or backward. Each shelf (240) may support one or more cases (100) stored in each storage space (230).

[0331] [Duct]

[0332] The duct (300) can be coupled to the rack (200). For example, the duct (300) can be inserted into one or more hollows (221) of the partition wall (220) (Figs. 7 to 10). As another example, unlike the drawings, the duct (300) can replace at least a part of the partition wall (220).

[0333] Referring further to FIGS. 15 to 21, the duct (300) may include one or more duct vents (340). The duct (300) may include one or more or multiple (e.g., Q) first ducts (310). The duct (300) may include one or more or multiple second ducts (320). The duct (300) may include one or more or multiple third ducts (330).

[0334] [Duct vent]

[0335] One or more duct air outlets (340) may be formed on the outer wall (outer surface) of the duct (300). One or more duct air outlets (340) may connect the internal space of the duct (300) to the outside. For example, any one duct air outlet (340) may include 72 duct holes (H3) within the dotted rectangle (R1) of FIG. 15.

[0336] One or more duct air outlets (340) may correspond to one or more storage spaces (230). Each of the one or more duct air outlets (340) may be connected to a corresponding storage space (230) (hereinafter, corresponding storage space (230)) that corresponds to each duct air outlet (340). Each duct air outlet (340) may face the corresponding storage space (230) to the left or right (Figs. 1, 2, 5, 7 to 10).

[0337] Each duct air outlet (340) may at least partially face each other with the vent (130) of at least one case (100) stored in the corresponding storage space (230) (Figs. 7 to 10).

[0338] Accordingly, air can flow smoothly into the interior of the case (100) stored in each storage space (230) of the rack (200), so the temperature of the battery cell (50) stored in the rack (200) can be maintained uniformly, and the battery cell (50) stored in the rack (200) can be heated or cooled quickly and effectively. Accordingly, the uniformity of quality and the accuracy of determining good or bad quality of the battery cell (50) are improved, the process time is shortened, and the processing capacity of the rack system (10) for manufacturing battery cells can be increased.

[0339] For example, since multiple battery cells (50) stored in a rack (200) can be aged and / or charged and discharged at a uniform temperature, the uniformity of quality of the battery cells (50) and the accuracy of determining good or bad (e.g., low voltage defect) can be improved. In addition, for example, since multiple battery cells (50) stored in a rack (200) can be aged and / or charged and discharged quickly at a set temperature, the activation process time can be shortened and the processing capacity of the rack system (10) for manufacturing battery cells can be increased.

[0340] Each duct air outlet (340) may include a plurality of duct holes (H3). For example, as described above, one duct air outlet (340) may include 72 duct holes (H3) within the dotted rectangle (R1) of FIG. 15.

[0341] Multiple duct holes (H3) may be formed on the outer wall (outer surface) of the duct (300). Multiple duct holes (H3) may connect the internal space of the duct (300) to the outside. Multiple duct holes (H3) may be connected to each storage space (230) (corresponding storage space (230)) corresponding to each duct air outlet (340) containing the multiple duct holes (H3). Multiple duct holes (H3) may be formed spaced apart from each other.

[0342] A plurality of duct holes (H3) of each duct air outlet (340) may each partially face a plurality of case holes (H1) of a ventilation port (130) of at least one case (100) (Figs. 7 to 10). For example, 72 duct holes (H3) of the duct air outlet (340) may face a total of 72 case holes (H1) of two cases (100) (Figs. 8 to 10).

[0343] Accordingly, air can be effectively introduced into the interior of the case (100) stored in each storage space (230) of the rack (200).

[0344] At this time, as described above, the case (100) is formed by stacking one or more trays (102), and a plurality of case holes (H1) may include one or more tray holes (H2) of one or more trays (102).

[0345] Accordingly, air can be smoothly introduced into the interior of the stack of trays (102) (i.e., case (100)) stored in each storage space (230) of the rack (200).

[0346] The spacing between the centers of the plurality of duct holes (H3) of each duct air outlet (340) may correspond to the spacing between the centers of the plurality of case holes (H1) of the ventilation opening (130) of at least one case (100). Here, the spacing may be in the vertical direction and / or in a direction intersecting the vertical direction (e.g., front-back direction) (Figs. 7 to 10).

[0347] Accordingly, air can be effectively introduced into the interior of the case (100) stored in each storage space (230) of the rack (200).

[0348] As described above, when a case (100) is inserted into each storage space (230) from the front or rear side and a plurality of case holes (H1) are formed on one side of the direction intersecting the front and rear directions of the outer wall (120), each duct hole (H3) may be in the form of an elongated hole extending to the front or rear side (Fig. 21).

[0349] Accordingly, since each duct hole (H3) has a width in the front-to-back direction, air can be effectively introduced into the case (100) even if the position of the case (100) stored in the front or rear of each storage space (230) of the rack (200) has an error or tolerance in the front-to-back direction.

[0350] In addition, since each duct hole (H3) has a width in the direction intersecting the front-rear direction (e.g., up-down direction), the pressure of the air blown from the duct hole (H3) increases, so that air can be effectively introduced into the case (100).

[0351] Each duct air outlet (340) may include multiple (e.g., R) sub-air outlets (342).

[0352] Multiple sub-air outlets (342) may be formed spaced apart from each other. Multiple sub-air outlets (342) may be formed on the outer wall of the duct (300). Multiple sub-air outlets (342) may communicate the internal space of the duct (300) with the outside. Multiple sub-air outlets (342) may communicate with a corresponding storage space (230) corresponding to the duct outlet (340) containing the multiple sub-air outlets (342).

[0353] For example, each duct air outlet (340) may include two (i.e., R=2) sub-air outlets (342). Here, one duct air outlet (340) may be 72 duct holes (H3) within the dotted rectangle (R1) of FIG. 15, and one sub-air outlet (342) may be 36 duct holes (H3) within the dotted rectangle (R2) of FIG. 15.

[0354] A plurality of (e.g., R) sub-air outlets (342) may each correspond to a plurality of (e.g., R) cases (100) that can be stored in a corresponding storage space (230). Each sub-air outlet (342) of each duct air outlet (340) may at least partially face each other with the vent (130) of each case (100) that is stored in the corresponding storage space (230) and corresponds to each sub-air outlet (342).

[0355] For example, two sub-vents (342) formed in the front-rear direction, each containing 36 duct holes (H3) within the dotted rectangle (R2) of FIG. 15 (i.e., R=2), may correspond to two cases (100) arranged in the front-rear direction, each containing 36 duct holes (H3) within the dotted rectangle (R2) of FIG. 15, and may at least partially face each other with the vents (130) of these two cases (100) ( FIG. 5, FIG. 9 and FIG. 10).

[0356] Accordingly, even if multiple cases (100) are stored in each storage space (230) of the rack (200), air can flow smoothly into the interior of the multiple cases (100) stored in each storage space (230). Accordingly, the temperature of the battery cells (50) stored in the rack (200) can be maintained uniformly, and the battery cells (50) stored in the rack (200) can be heated and cooled quickly and effectively.

[0357] At this time, each sub-air outlet (342) of each duct air outlet (340) may be stored in a corresponding storage space (230) and may face each other adjacently with the ventilation opening (130) of each case (100) corresponding to each sub-air outlet (342) (Figs. 5, 9 and 10).

[0358] Accordingly, air can be effectively introduced into the interior of the multiple cases (100) stored in each storage space (230) of the rack (200).

[0359] Each sub-air outlet (342) of each duct outlet (340) may include a plurality of duct holes (H3). For example, as described above, one sub-air outlet (342) may include 36 duct holes (H3) within the dotted rectangle (R2) of FIG. 15.

[0360] Multiple duct holes (H3) may be formed on the outer wall (outer surface) of the duct (300). Multiple duct holes (H3) may connect the internal space of the duct (300) with the outside. Multiple duct holes (H3) may be connected to each storage space (230) (corresponding storage space (230)) corresponding to each duct air outlet (340) which includes each sub-air outlet (342) including the multiple duct holes (H3). Multiple duct holes (H3) may be formed spaced apart from each other. Each duct hole (H3) may be in the form of an elongated hole extending to the front or rear (Fig. 21).

[0361] A plurality of duct holes (H3) of each sub-air outlet (342) of each duct air outlet (340) may each be stored in a corresponding storage space (230) and may each be at least partially facing a plurality of case holes (H1) of a ventilation port (130) of each case (100) corresponding to each sub-air outlet (342) (Figs. 7 to 10). For example, 36 duct holes (H3) of the sub-air outlet (342) may face a plurality of case holes (H1) of one case (100) corresponding to the sub-air outlet (342).

[0362] Accordingly, air can be effectively introduced into the interior of the multiple cases (100) stored in each storage space (230) of the rack (200).

[0363] At this time, as described above, the case (100) is formed by stacking one or more trays (102), and a plurality of case holes (H1) may include one or more tray holes (H2) of one or more trays (102).

[0364] The spacing between the centers of the plurality of duct holes (H3) of each sub-air outlet (342) of each duct air outlet (340) may correspond to the spacing between the centers of the plurality of case holes (H1) of the ventilation holes (130) of each case (100) corresponding to each sub-air outlet (342) that are stored in the corresponding storage space (230) (Figs. 7 to 10).

[0365] Accordingly, air can be effectively introduced into the interior of the multiple cases (100) stored in each storage space (230) of the rack (200).

[0366] [1st Duct]

[0367] One or more or multiple first ducts (310) may be provided. Each first duct (310) may be positioned adjacent to the right or left side of at least one storage space (230). At least one duct air outlet (340) corresponding to each of the storage spaces (230) may be formed on the left or right side of each first duct (310) (Figs. 7 to 10).

[0368] Accordingly, the structure of the duct (300) connected to one or more storage spaces (230) can be simplified. As a result, air can be easily and effectively introduced into the interior of the case (100) stored in each storage space (230) of the rack (200). In addition, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced and energy efficiency can be improved.

[0369] Additionally, a duct (300) may be installed in a space provided to separate or partition each storage space (230) in the left and right directions (e.g., a space where a side wall (226) is placed or a space between a pair of column frames (210)). Accordingly, a separate space for installing the duct (300) is unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0370] For example, one first duct (310) may include two first sub-ducts (312) each having a duct air outlet (340) corresponding to one storage space (230) formed separately in half (Fig. 15). The first sub-duct (312) will be described later.

[0371] As described above, when multiple storage spaces (230) are arranged in a grid and P are arranged in the vertical direction, each first duct (310) may be positioned adjacent to the right or left side of the P storage spaces (230) arranged in the vertical direction. Each first duct (310) may be formed to extend upward or downward. P duct air outlets (340) corresponding to each of the P storage spaces (230) arranged in the vertical direction may be formed vertically in each first duct (310). Specifically, each of the P duct air outlets (340) may be formed on the left or right side of each first duct (310).

[0372] For example, when six storage spaces (230) are arranged in a grid of three rows (layers) and two columns, three duct vents (340) corresponding to three storage spaces (230) can be formed vertically on the left side of one first duct (310), that is, two first sub-ducts (312) (Figs. 7, 8, 15, 16).

[0373] Accordingly, the structure of the duct (300) connected to the multiple storage spaces (230) having a grid arrangement of multiple rows (P layers) can be simplified. As a result, air can be easily and effectively introduced into the interior of the case (100) stored in each storage space (230) of the rack (200). In addition, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced and energy efficiency can be improved.

[0374] Additionally, a duct (300) may be installed in a space provided to separate or partition each row of a plurality of storage spaces (230) having a grid arrangement of multiple rows (P layers) in the left-right direction (e.g., a space where a side wall (226) is placed or a space between a pair of column frames (210). Accordingly, a separate space for installing the duct (300) is unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0375] Additionally, since each first duct (310) extends upward or downward, the fan (400) can be installed at the top or bottom of the rack (200). Accordingly, a separate space for installing the fan (400) may be unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0376] P duct air outlets (340) formed in each first duct (310) can be spaced apart from each other in the vertical direction.

[0377] At this time, P duct air outlets (340) may be formed entirely on the left side of each first duct (310) or entirely on the right side of each first duct (310).

[0378] Accordingly, the structure of the duct (300) connected to the multiple storage spaces (230) having a grid arrangement of multiple rows (P layers) can be simplified. Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0379] As described above, when R cases (100) are stored in each storage space (230) and the R cases (100) stored in each storage space (230) are arranged side by side in the front or rear, each first duct (310) may include R first sub-ducts (312). The R first sub-ducts (312) may be arranged adjacently to the right or left side of at least one storage space (230). The R first sub-ducts (312) may be separated from each other. At least one duct air outlet (340) and R sub-air outlets (342) may be formed on the left or right side of each of the R first sub-ducts (312) of each first duct (310).

[0380] For example, the first duct (310) may include two first sub-ducts (312) that are positioned adjacent to the right side of the storage space (230) on the third floor, arranged side by side in the front-rear direction, and separated from each other. On the left side of the two first sub-ducts (312), two sub-air outlets (342) may be formed on the front and rear sides of each of the three duct outlets (340) corresponding to the storage space (230) on the third floor. That is, in the first sub-duct (312) on the front side, a front sub-air outlet (342) of each of the three duct air outlets (340) may be formed, and in the first sub-duct (312) on the rear side, a rear sub-air outlet (342) of each of the three duct air outlets (340) may be formed (Figs. 5, 9, 10, 15, 16).

[0381] Accordingly, multiple first sub-ducts (312) can individually blow air into multiple cases (100) stored in each storage space (230) of the rack (200). As a result, air can be uniformly and effectively introduced into the interior of multiple cases (100) stored in each storage space (230) of the rack (200).

[0382] Additionally, multiple first sub-ducts (312) of each first duct (310) may be installed in a space provided to separate or partition each storage space (230) in the left and right directions (e.g., a space where a side wall (226) is placed or a space between a pair of column frames (210)). Accordingly, a separate space for installing the duct (300) is unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0383] Additionally, since R first sub-ducts (312) are separated from each other, a space can be formed between adjacent first sub-ducts (312), and a support structure (e.g., a column frame (210)) can be placed in this space (Fig. 9). Accordingly, the structural stability of the rack (200) can be improved. In addition, the conventional rack (200) can be used without significant modification.

[0384] As described above, when a plurality of storage spaces (230) are arranged in a grid and P are arranged in the vertical direction, R first sub-ducts (312) of each first duct (310) may be arranged adjacent to the right or left of the P storage spaces (230) arranged in the vertical direction, and may be arranged side by side in the front or rear. Additionally, R first sub-ducts (312) of each first duct (310) may be formed to extend upward or downward.

[0385] At this time, P sub-air outlets (342) may be formed vertically arranged in each first sub-duct (312). Here, the P sub-air outlets (342) may be one sub-air outlet (342) of each of the P duct outlets (340) corresponding to the P storage spaces (230) arranged vertically. Specifically, each of the P sub-air outlets (342) may be formed on the left or right side of each first sub-duct (312).

[0386] For example, as described above, in the case where the first duct (310) includes two first sub-ducts (312) that are arranged adjacently to the right of the storage space (230) on the third floor, arranged side by side in the front and rear directions, and separated from each other, the front sub-air outlet (342) of each of the three duct air outlets (340) may be formed in the front first sub-duct (312), and the rear sub-air outlet (342) of each of the three duct air outlets (340) may be formed in the rear first sub-duct (312) (Figs. 5, 9, 10, 15, 16).

[0387] Accordingly, the structure of the duct (300) connected to the multiple storage spaces (230), each having a grid arrangement of multiple rows (P layers) and capable of storing multiple cases (R cases) (100), can be simplified. As a result, air can be easily, effectively, and uniformly introduced into the interior of the multiple cases (100) stored in each storage space (230) of the rack (200). In addition, the manufacturing, installation, and maintenance costs of the battery cell manufacturing rack system (10) can be reduced, and energy efficiency can be improved.

[0388] Additionally, multiple first sub-ducts (312) of each first duct (310) may be installed in a space provided to separate or partition each row of multiple storage spaces (230) having a grid arrangement of multiple rows (P layers) in the left-right direction (e.g., a space where a side wall (226) is placed or a space between a pair of column frames (210). Accordingly, a separate space for installing the duct (300) is unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0389] Additionally, since each first sub-duct (312) extends upward or downward, the fan (400) can be installed at the top or bottom of the rack (200). Accordingly, a separate space for installing the fan (400) may be unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0390] Additionally, since R first sub-ducts (312) are separated from each other, a space extending upward or downward can be formed between first sub-ducts (312) adjacent to each other in the front-rear direction, and a column frame (210) extending upward and downward can be placed in this space (Fig. 9). Accordingly, the structural stability of the rack (200) can be improved. In addition, the conventional rack (200) can be used without significant modification.

[0391] P sub-air outlets (342) formed in each first sub-duct (312) can be spaced apart from each other in the vertical direction.

[0392] P sub-air outlets (342) may be formed entirely on the left side of each first sub-duct (312) or entirely on the right side of each first sub-duct (312).

[0393] Accordingly, the structure of the duct (300) connected to the multiple storage spaces (230), each having a grid arrangement of multiple rows (P layers) and capable of accommodating multiple cases (R cases) (100), can be simplified. Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0394] At least some of the first ducts (310) may be spaced apart in the left and right directions.

[0395] As described above, when a plurality of storage spaces (230) are arranged in a grid in at least the vertical and horizontal directions, and Q (Q is a natural number greater than or equal to 2) are arranged in the horizontal direction, Q first ducts (310) may be placed adjacent to the right side or adjacent to the left side of each of the Q storage spaces (230) arranged in the horizontal direction.

[0396] At this time, Q storage spaces (230) arranged in a left-right direction and Q corresponding duct air outlets (340) may be formed on the left side of each first duct (310) adjacent to the right side of each of the Q storage spaces (230), or formed on the right side of each first duct (310) adjacent to the left side of each of the Q storage spaces (230) (Figs. 7 to 10).

[0397] Accordingly, each first duct (310) can individually blow air into each row of a plurality of storage spaces (230) having a grid arrangement of multiple rows (Q rows). As a result, air can be uniformly and effectively introduced into the interior of the case (100) stored in each storage space (230) of the rack (200).

[0398] In addition, since each first duct (310) blows air into only one of the storage spaces (230) on the left and right sides, the blowing pressure increases so that air can be effectively drawn into the case (100).

[0399] At this time, the R sub-air outlets (342) of each of the Q storage spaces (230) arranged in the left and right directions and the Q duct air outlets (340) corresponding to each of the Q storage spaces (230) may be formed on the left side of each of the R first sub-ducts (312) of each first duct (310) arranged adjacent to the right side of each of the Q storage spaces (230), or may be formed on the right side of each of the R first sub-ducts (312) of each first duct (310) arranged adjacent to the left side of each of the Q storage spaces (230) (Figs. 7 to 10).

[0400] Accordingly, multiple first sub-ducts (312) of each first duct (310) can blow air into each row of multiple storage spaces (230). As a result, air can be uniformly and effectively introduced into the interior of multiple cases (100) stored in each storage space (230) of the rack (200).

[0401] In addition, since the multiple first sub-ducts (312) of each first duct (310) blow air only into one of the storage spaces (230) on the left and right sides, the pressure blown from the multiple first sub-ducts (312) of each first duct (310) increases, so that air can be effectively introduced into the case (100).

[0402] [2nd Duct, 3rd Duct]

[0403] One or more or multiple second ducts (320) may be provided. One or more second ducts (320) may each be directly connected to one or more first ducts (310). One or more second ducts (320) may be connected to a fan (400). One or more second ducts (320) may be formed to extend to the left or right.

[0404] For example, one end of each second duct (320) can be directly connected to the end of each first duct (310). The other end of each second duct (320) can be connected to a fan (400).

[0405] Accordingly, since the second duct (320) is extended to the left or right, the uniformity of the air pressure inside the first duct (310) can be improved in the front-rear direction. Accordingly, even if the front-rear width of the first duct (310) and / or the case (100) is large, air can be uniformly introduced into the case (100).

[0406] In contrast, if the second duct (320) is extended to the front or rear, the uniformity of the internal air pressure of the first duct (310) may be lowered in the front-rear direction.

[0407] Additionally, air can be supplied to multiple first ducts (310) spaced apart in the left and right directions using a single fan (400). Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0408] Each second duct (320) may include R second sub-ducts (322).

[0409] R second sub-ducts (322) can each be directly connected to R first sub-ducts (312) of each first duct (310). R second sub-ducts (322) can be connected to a fan (400). R second sub-ducts (322) can be formed to extend to the left or right. R second sub-ducts (322) can be separated from each other.

[0410] For example, one end of each second sub-duct (322) can be directly connected to the end of each first sub-duct (312). The other end of each second sub-duct (322) can be connected to a fan (400).

[0411] Accordingly, since the second sub-duct (322) is extended to the left or right, the uniformity of the air pressure in the front-rear direction inside the first sub-duct (312) can be improved. Accordingly, even if the front-rear width of the first sub-duct (312) and / or the case (100) is large, air can be uniformly introduced into the case (100).

[0412] In contrast, if the second sub-duct (322) is extended to the front or rear, the uniformity of the air pressure in the front and rear directions inside the first sub-duct (312) may be reduced.

[0413] Additionally, air can be supplied to multiple first sub-ducts (312) spaced apart in the left and right directions using a single fan (400). Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0414] One or more or multiple third ducts (330) may be provided. One or more third ducts (330) may be formed to extend forward or backward. Each third duct (330) may be connected to at least one second duct (320) and a fan (400). For example, one end of each third duct (330) may be connected to the end of at least one second duct (320). The other end of each third duct (330) may be connected to a fan (400).

[0415] Accordingly, even if the second duct (320) is spaced apart from the fan (400) in the front-rear direction, it can be connected to the fan (400) through the third duct (330).

[0416] Additionally, air can be supplied to multiple second ducts (320) spaced apart in the front and rear directions using a single fan (400). Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0417] Each third duct (330) can be connected to at least one second sub-duct (322) and a fan (400). For example, one end of each third duct (330) can be connected to the end of at least one second sub-duct (322). The other end of each third duct (300) can be connected to a fan (400).

[0418] Accordingly, even if the second sub-duct (300) is spaced apart from the fan (400) in the front-rear direction, it can be connected to the fan (400) through the third duct (330).

[0419] Additionally, air can be supplied to multiple second sub-ducts (322) spaced apart in the front and rear directions using a single fan (400). Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0420] As described above, when a plurality of storage spaces (230) are arranged in a grid in the vertical, horizontal, and front-back directions, unlike in the drawing, the duct (300) may include a pair of the third ducts (330) connected to the fan (400) and positioned on the front and rear sides of the fan (400), a pair of the second ducts (320) branching off to the left and right respectively from each of the pair of third ducts (330), and each of the first ducts (310) connected to each of the pair of second ducts (320) branched off from each of the pair of third ducts (330). This may correspond to a structure in which the total of four first sub-ducts (312) and four second sub-ducts (322) of FIGS. 15 to 18 are replaced with four first ducts (310) and four second ducts (320).

[0421] For example, a pair of second ducts (320) may branch off to the left and right, respectively, from each end of a pair of third ducts (330). Each first duct (310) may be connected to the end of each second duct (320).

[0422] Accordingly, air can be supplied to at least P (e.g., 3)*2*2 duct vents (340) with one fan (400). Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0423] Additionally, multiple second ducts (320), multiple third ducts (330), and a fan (400) can be installed on the upper or lower part of the rack (200). Accordingly, a separate space for installing the ducts (300) and the fan (400) may be unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0424] As described above, when a plurality of storage spaces (230) are arranged in a grid in the vertical and horizontal directions as shown in the drawing, the duct (300) may include a pair of the third ducts (330) connected to the fan (400) and positioned at the front and rear sides of the fan (400), a pair of the second sub-ducts (322) branching to the left and right respectively from each of the pair of third ducts (330), and each of the first sub-ducts (312) connected to each of the pair of second sub-ducts (322) branched from each of the pair of third ducts (330) (Figs. 15 to 18).

[0425] For example, a pair of second sub-ducts (322) may branch off to the left and right, respectively, from each end of a pair of third ducts (330). Each first sub-duct (312) may be connected to the end of each second sub-duct (322) (Figs. 15 to 18).

[0426] Accordingly, one fan (400) can supply air to at least P (e.g., 3)*2*2 sub-air outlets (342). Accordingly, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0427] Additionally, multiple second ducts (320), multiple third ducts (330), and a fan (400) can be installed on the upper or lower part of the rack (200). Accordingly, a separate space for installing the ducts (300) and the fan (400) may be unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0428] [Pan]

[0429] The fan (400) can be connected to the duct (300). The fan (400) can supply air to the duct (300). The fan (400) can supply internal air of the chamber to the duct (300).

[0430] The fan (400) may be installed at the top or bottom of the rack (200). For example, the fan (400) may be placed in an empty space at the top or bottom of the rack (200).

[0431] Accordingly, a separate space for installing the fan (400) may be unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0432] As described above, when the main duct is installed at the top of the chamber, the fan (400) can be installed at the bottom of the rack (200).

[0433] Accordingly, the air inside the chamber can be effectively circulated. As a result, the temperature of the battery cells (50) stored in the rack (200) can be maintained uniformly, and the battery cells (50) stored in the rack (200) can be heated and cooled quickly and effectively.

[0434] [Second Embodiment of a Rack System for Battery Cell Manufacturing]

[0435] The rack system (10) for manufacturing a battery cell according to the second embodiment may include a case (100), a rack (200), a duct (300), and a fan (400). The differences from the rack system (10) for manufacturing a battery cell according to the first embodiment described above will be examined in detail.

[0436] The case (100) may include a seating space (110). Unlike the above, the case (100) may not include a ventilation opening (130). One or more battery cells (50) may be seated in the seating space (110).

[0437] The rack (200) may include one or more storage spaces (230). One or more storage spaces (230) may be formed separately from each other. Multiple cases (100) may be stored in each storage space (230). Multiple cases (100) stored in each storage space (230) may be arranged side by side in the front or rear.

[0438] The duct (300) may include one or more duct vents (340). The duct (300) may include one or more first ducts (310).

[0439] One or more duct vents (340) may correspond to one or more storage spaces (230). One or more duct vents (340) may be connected to each corresponding storage space (230).

[0440] Each duct air outlet (340) may include R (R is a natural number greater than or equal to 2) sub-air outlets (342).

[0441] R sub-air outlets (342) may be connected to corresponding storage spaces (230), which are corresponding to each duct air outlet (340) containing R sub-air outlets (342). Unlike the above, each sub-air outlet (342) may not correspond to each case (100) and may not at least partially face each other with the vent (130) of each case (100) corresponding to each sub-air outlet (342).

[0442] Each of one or more first ducts (310) may be positioned adjacent to the right or left side of at least one storage space (230). Each first duct (310) may include R first sub-ducts (312).

[0443] R first sub-ducts (312) may be positioned adjacent to the right or left side of at least one storage space (230). R first sub-ducts (312) may be arranged side by side in the front or rear. R first sub-ducts (312) may be separated from each other.

[0444] At least one storage space (230) and at least one corresponding duct air outlet (340) are formed on the left or right side of each first duct (310), and each of the R first sub-ducts (312) of each first duct (310) may each have R sub-air outlets (342) formed on the left or right side of each duct air outlet (340).

[0445] For example, as described above, the first duct (310) may include two first sub-ducts (312) that are positioned adjacent to the right side of the storage space (230) on the third floor, arranged side by side in the front-rear direction, and separated from each other. On the left side of the two first sub-ducts (312), two sub-air outlets (342) may be formed on the front and rear sides of each of the three duct outlets (340) corresponding to the storage space (230) on the third floor. That is, in the first sub-duct (312) on the front side, a front sub-air outlet (342) of each of the three duct air outlets (340) may be formed, and in the first sub-duct (312) on the rear side, a rear sub-air outlet (342) of each of the three duct air outlets (340) may be formed (Figs. 5, 9, 10, 15, 16).

[0446] Accordingly, a plurality of first sub-ducts (312) can individually blow air into each storage space (230) of the rack (200). As a result, air can be uniformly and effectively introduced into the interior of the plurality of cases (100) stored in each storage space (230) of the rack (200). Therefore, the temperature of the plurality of battery cells (50) placed in the plurality of cases (100) of each storage space (230) can be maintained uniformly, and the battery cells (50) placed in the plurality of cases (100) of each storage space (230) can be uniformly heated and cooled quickly.

[0447] Additionally, multiple first sub-ducts (312) of each first duct (310) may be installed in a space provided to separate or partition each storage space (230) in the left and right directions (e.g., a space where a side wall (226) is placed or a space between a pair of column frames (210)). Accordingly, a separate space for installing the duct (300) is unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0448] Additionally, since R first sub-ducts (312) are separated from each other, a space can be formed between adjacent first sub-ducts (312), and a support structure (e.g., a column frame (210)) can be placed in this space (Fig. 9). Accordingly, the structural stability of the rack (200) can be improved. In addition, the conventional rack (200) can be used without significant modification.

[0449] Meanwhile, matters not mentioned in relation to the rack system (10) for manufacturing a battery cell according to the second embodiment can be inferred from the rack system (10) for manufacturing a battery cell according to the first embodiment described above.

[0450] [Third Embodiment of a Rack System for Battery Cell Manufacturing]

[0451] The rack system (10) for manufacturing a battery cell according to the third embodiment may include a case (100), a rack (200), a duct (300), and a fan (400). The differences from the rack system (10) for manufacturing a battery cell according to the first and second embodiments described above will be examined.

[0452] The case (100) may include a seating space (110). Unlike the above, the case (100) may not include a ventilation opening (130). One or more battery cells (50) may be seated in the seating space (110).

[0453] The rack (200) may include a plurality of storage spaces (230). One or more cases (100) may be stored in each storage space (230). The plurality of storage spaces (230) may be formed separately from each other.

[0454] Unlike the drawing, multiple storage spaces (230) are arranged in a grid in the up-down direction, left-right direction, and front-back direction, and multiple spaces may be arranged in each of the up-down direction, left-right direction, and front-back direction.

[0455] The duct (300) may include a plurality of duct air outlets (340). The plurality of duct air outlets (340) may correspond to a plurality of storage spaces (230). The plurality of duct air outlets (340) may be in communication with each corresponding storage space (230). Unlike the above, each duct air outlet (340) may not face at least partially with the vent (130) of at least one case (100) stored in the corresponding storage space (230).

[0456] The duct (300) may include a pair of third ducts (330) that are connected to the fan (400), are respectively positioned at the front and rear sides of the fan (400), and are respectively extended to the front and rear sides; a pair of second ducts (320) that are respectively branched to the left and right from each of the pair of third ducts (330) and are respectively extended to the left and right sides; and each first duct (310) that is connected to each of the pair of second ducts (320) branched from each of the pair of third ducts (330) and is respectively extended to the upper or lower side. This may correspond to a structure in which the four first sub-ducts (312) and four second sub-ducts (322) of FIGS. 15 to 18 are changed to four first ducts (310) and four second ducts (320).

[0457] Each first duct (310) may be positioned adjacent to the right or left side of a plurality of storage spaces (230) arranged in an up-and-down direction. A plurality of duct air outlets (340) corresponding to each of the plurality of storage spaces (230) arranged in an up-and-down direction may be formed vertically in each first duct (310). Each of the plurality of duct air outlets (340) may be formed on the left or right side of each first duct (310).

[0458] Accordingly, air can be supplied to multiple duct air outlets (340) in the up-down, left-right, and front-back directions using a single fan (400). As a result, the manufacturing, installation, and maintenance costs of the rack system (10) for manufacturing battery cells can be reduced.

[0459] Additionally, multiple first ducts (310) can be installed in a space provided to separate or partition multiple storage spaces (230) in the left and right directions, and multiple second ducts (320), multiple third ducts (330), and a fan (400) can be installed on the upper or lower part of the rack (200). Accordingly, a separate space for installing the ducts (300) and the fan (400) may be unnecessary or minimized, and the conventional rack (200) can be used without significant modification.

[0460] In addition, since the second duct (320) connected to the first duct (310) extends to the left or right, the uniformity of the internal air pressure of the first duct (310) can be improved in the front-rear direction.

[0461] Meanwhile, matters not mentioned in relation to the rack system (10) for manufacturing a battery cell according to the third embodiment can be inferred from the rack system (10) for manufacturing a battery cell according to the first embodiment described above.

[0462] [Battery Cell Activation Method]

[0463] Referring to FIG. 22, a battery cell activation method (S700) according to one embodiment of the present invention may include a case storage process (S710) and an activation process (S720).

[0464] In the case storage process (S710), each case (100) with one or more battery cells (50) seated thereon can be stored in each storage space (230) of the rack (200).

[0465] Here, each duct air outlet (340) can be positioned so as to face at least partially with the vent (130) of at least one case (100) stored in a corresponding storage space (230) corresponding to each duct air outlet (340). For example, the case (100) can be moved so as to position the vent (130) and the duct air outlet (340) so as to face at least partially with each other.

[0466] Accordingly, air can flow smoothly into the interior of the case (100) stored in each storage space (230) of the rack, so the temperature of the battery cell (50) stored in the rack (200) can be maintained uniformly, and the battery cell (50) stored in the rack (200) can be heated or cooled quickly and effectively. Accordingly, the quality uniformity and accuracy of determining good or bad quality of the battery cell (50) are improved, the activation process time is shortened, and the processing capacity of the rack system (10) for manufacturing battery cells can be increased.

[0467] For example, since multiple battery cells (50) stored in a rack (200) can be aged and / or charged and discharged at a uniform temperature, the uniformity of quality of the battery cells (50) and the accuracy of determining good or bad (e.g., low voltage defect) can be improved. In addition, for example, since multiple battery cells (50) stored in a rack (200) can be aged and / or charged and discharged quickly at a set temperature, the activation process time can be shortened and the processing capacity of the rack system (10) for manufacturing battery cells can be increased.

[0468] Here, each sub-air outlet (342) of each duct air outlet (340) can be positioned to be stored in a corresponding storage space (230) and to face at least partially each other with the vent (130) of each case (100) corresponding to each sub-air outlet (342).

[0469] Accordingly, even if multiple cases (100) are stored in each storage space (230) of the rack (200), air can flow smoothly into the interior of the multiple cases (100) stored in each storage space (230). Accordingly, the temperature of the battery cells (50) stored in the rack (200) can be maintained uniformly, and the battery cells (50) stored in the rack (200) can be heated and cooled quickly and effectively.

[0470] Here, a plurality of duct holes (H3) of each duct air outlet (340) can be positioned so as to face each of a plurality of case holes (H1) of a ventilation port (130) of at least one case (100) at least partially.

[0471] Accordingly, air can be effectively introduced into the interior of the case (100) stored in each storage space (230) of the rack (200).

[0472] Here, a plurality of duct holes (H3) of each sub-air outlet (342) of each duct air outlet (340) can be positioned to be stored in a corresponding storage space (230) and to face at least partially each of the plurality of case holes (H1) of the ventilation opening (130) of each case (100) corresponding to each sub-air outlet (342).

[0473] Accordingly, air can be effectively introduced into the interior of the multiple cases (100) stored in each storage space (230) of the rack.

[0474] In the activation process (S720), one or more battery cells (50) placed in each case (100) stored in each storage space (230) can be activated.

[0475] Here, a fan (400) can be operated to supply air to one or more storage spaces (230) through the duct (400).

[0476] The embodiments described above should be understood as exemplary in all respects and not limiting, and the scope of the invention will be defined by the claims set forth below rather than by the detailed description above. Furthermore, the meaning and scope of the claims set forth below, as well as all modifications and variations derived from equivalents thereof, should be interpreted as being included within the scope of the invention.

[0477] Although the present invention has been described above with reference to the illustrated drawings, the present invention is not limited by the embodiments and drawings disclosed in this specification, and it is obvious that various modifications can be made by a person skilled in the art within the scope of the technical concept of the present invention. Furthermore, even if the effects of the configuration according to the present invention were not explicitly described while describing the embodiments of the present invention above, it is natural to acknowledge that the effects predictable by said configuration should also be recognized.

Claims

1. A case (100) comprising a mounting space (110) on which one or more battery cells (50) are mounted, an outer wall (120) surrounding the mounting space (110), and a ventilation opening (130) formed in the outer wall (120) and communicating the mounting space (110) with the outside; A rack (200) comprising one or more storage spaces (230) formed separately from each other, each capable of accommodating one or more of the above-mentioned cases (100); A duct (300) comprising one or more duct vents (340) that correspond to each of the above-mentioned storage spaces (230) and communicate with each of the corresponding storage spaces (230); and It includes a fan (400) that supplies air to the above duct (300), and Each of the above-mentioned duct air outlets (340) is at least partially facing each other with the ventilation port (130) of at least one case (100) that is stored in a corresponding storage space (230), which is each of the above-mentioned storage spaces (230) corresponding to each of the above-mentioned duct air outlets (340). Rack system for battery cell manufacturing.

2. In Claim 1, A plurality of the above cases (100) can be stored in each of the above storage spaces (230), and Each of the above duct air outlets (340) includes a plurality of sub-air outlets (342) corresponding to each of the plurality of cases (100) that are in communication with the corresponding storage space (230) and can be stored in the corresponding storage space (230). A rack system for manufacturing battery cells, wherein each of the sub-air outlets (342) of each of the above-mentioned duct air outlets (340) is stored in the corresponding storage space (230) and at least partially faces each other with the vent (130) of each of the above-mentioned cases (100) corresponding to each of the sub-air outlets (342).

3. In claim 1 or claim 2, The above ventilation opening (130) includes a plurality of case holes (H1) formed spaced apart from each other on one side of the outer wall (120) and communicating the seating space (110) with the outside. Each of the above-mentioned duct vents (340) includes a plurality of duct holes (H3) that are connected to the corresponding storage space (230) and are spaced apart from each other. A rack system for manufacturing battery cells, wherein the plurality of duct holes (H3) of each of the above-mentioned duct air outlets (340) each face at least partially with the plurality of case holes (H1) of the ventilation holes (130) of the at least one case (100).

4. In Claim 3, A rack system for manufacturing battery cells, wherein the spacing between the centers of the plurality of duct holes (H3) of each of the above-mentioned duct air outlets (340) corresponds to the spacing between the centers of the plurality of case holes (H1) of the above-mentioned ventilation holes (130) of at least one case (100).

5. In claim 3 or claim 4, The above case (100) is inserted into each of the above storage spaces (230) from the front or rear, and The plurality of case holes (H1) are formed on one side in a direction intersecting the front and rear directions of the outer wall (120), and A rack system for manufacturing battery cells, wherein each of the above-mentioned duct holes (H3) is in the form of an elongated hole extending to the front or rear.

6. In any one of claims 1 to 5, The above duct (300) includes one or more first ducts (310), and Each of the above first ducts (310) is positioned adjacent to the right or left side of at least one storage space (230), and A rack system for manufacturing battery cells, wherein at least one duct air outlet (340) corresponding to each of the at least one storage space (230) is formed on the left or right side of each of the first ducts (310).

7. In Claim 6, The above rack (200) includes a plurality of the above storage spaces (230), and The plurality of storage spaces (230) are arranged in a grid in at least the vertical and horizontal directions, and P (where P is a natural number greater than or equal to 2) are arranged in the vertical direction. Each of the above first ducts (310) is positioned adjacent to the right or left side of the P storage spaces (230) arranged in the vertical direction and is formed to extend upward or downward. The P storage spaces (230) arranged in the vertical direction and the P corresponding duct air outlets (340) are formed vertically arranged in each of the first ducts (310). A rack system for manufacturing battery cells, wherein each of the above P duct air outlets (340) is formed on the left or right side of each of the above first ducts (310).

8. In claim 6 or claim 7, R (R is a natural number greater than or equal to 2) cases (100) can be stored in each of the above storage spaces (230), and The R cases (100) stored in each of the above storage spaces (230) can be arranged side by side in the front or rear, and Each of the above duct air outlets (340) includes R sub-air outlets (342) corresponding to each of the R cases (100) that are in communication with the corresponding storage space (230) and can be stored in the corresponding storage space (230). Each of the sub-air outlets (342) of each of the above-mentioned duct air outlets (340) is stored in the corresponding storage space (230) and at least partially faces each other with the vent (130) of each of the above-mentioned cases (100) corresponding to each of the sub-air outlets (342). Each of the above first ducts (310) comprises R first sub-ducts (312) separated from each other and arranged adjacently to the right or left of the at least one storage space (230). A rack system for manufacturing battery cells, wherein each of the R sub-air outlets (342) of each of the R first sub-ducts (312) of each of the first ducts (310) is formed on the left or right side of each of the at least one duct outlet (340).

9. In Claim 8, The above rack (200) includes a plurality of the above storage spaces (230), and The plurality of storage spaces (230) are arranged in a grid in at least the vertical and horizontal directions, and P (where P is a natural number greater than or equal to 2) are arranged in the vertical direction. The R first sub-ducts (312) of each of the above first ducts (310) are arranged adjacent to the right or left side of the P storage spaces (230) arranged in the vertical direction, arranged side by side in the front or rear, and extended upward or downward. In each of the above first sub-ducts (312), the P sub-air outlets (342) are arranged vertically, and The above P sub-air outlets (342) are each one of the P duct air outlets (340) corresponding to the P storage spaces (230) arranged in the vertical direction, and A rack system for manufacturing battery cells, wherein each of the above P sub-air vents (342) is formed on the left or right side of each of the above first sub-ducts (312).

10. In Claim 7, A rack system for manufacturing battery cells, wherein the above duct (300) includes one or more second ducts (320) that are each directly connected to one or more first ducts (310), connected to the fan (400), and extended to the left or right.

11. In Claim 10, The above duct (300) includes one or more third ducts (330) that are extended to the front or rear side, and A rack system for manufacturing battery cells, wherein each of the above-mentioned third ducts (330) is connected to at least one of the above-mentioned second ducts (320) and the above-mentioned fan (400).

12. In Claim 11, The plurality of storage spaces (230) are arranged in a grid in the up-down direction, left-right direction, and front-back direction, with Q (Q is a natural number greater than or equal to 2) and R (R is a natural number greater than or equal to 2) spaces arranged in the left-right direction and front-back direction, respectively. At least some of the first ducts (310) are spaced apart in the left and right directions, and A rack system for manufacturing battery cells, comprising: a pair of third ducts (330) connected to the fan (400) and respectively positioned on the front and rear sides of the fan (400); a pair of second ducts (320) branching to the left and right respectively from each of the pair of third ducts (330); and each of the first ducts (310) connected to each of the pair of second ducts (320) branched from each of the pair of third ducts (330).

13. A case (100) including a mounting space (110) on which one or more battery cells (50) are mounted; A rack (200) comprising a plurality of storage spaces (230) formed separately from each other, each capable of accommodating one or more of the above-mentioned cases (100); A duct (300) comprising a plurality of duct air outlets (340) each corresponding to and communicating with the respective storage spaces (230); and It includes a fan (400) that supplies air to the above duct (300), and The above plurality of storage spaces (230) are arranged in a grid in the up-down direction, left-right direction, and front-back direction, and a plurality of them are arranged in each of the up-down direction, left-right direction, and front-back direction. The above duct (300) includes a pair of third ducts (330) that are connected to the fan (400) and are respectively positioned at the front and rear sides of the fan (400) and extend to the front and rear sides, respectively; a pair of second ducts (320) that are respectively branched to the left and right from each of the pair of third ducts (330) and extend to the left and right sides, respectively; and a first duct (310) that is connected to each of the pair of second ducts (320) branched from each of the pair of third ducts (330) and extends to the upper or lower side. Each of the above first ducts (310) is positioned adjacent to the right or left side of the plurality of storage spaces (230) arranged in the vertical direction, and A plurality of duct air outlets (340) corresponding to each of the plurality of storage spaces (230) arranged in the vertical direction are formed vertically arranged in each of the first ducts (310), and A rack system for manufacturing battery cells, wherein each of the plurality of duct air outlets (340) is formed on the left or right side of each of the first ducts (310).

14. In Claim 9, The plurality of storage spaces (230) are arranged in the grid, with Q (Q is a natural number greater than or equal to 2) arranged in the left and right directions, and At least some of the first ducts (310) are spaced apart in the left and right directions, and A rack system for manufacturing battery cells, comprising: a pair of third ducts (330) connected to the fan (400) and respectively positioned at the front and rear sides of the fan (400) and extending to the front or rear side; a pair of second sub-ducts (322) branched from each of the pair of third ducts (330) to the left and right respectively and extending to the left or right side; and a first sub-duct (312) connected to each of the pair of second sub-ducts (322) branched from each of the pair of third ducts (330).

15. In any one of claims 6 to 12 and claim 14, A plurality of the above storage spaces (230) are arranged in a grid in at least the vertical and horizontal directions, and Q (Q is a natural number greater than or equal to 2) are arranged in the horizontal direction, and The above duct (300) includes the above Q first ducts (310), and The above Q first ducts (310) are each positioned adjacent to the right side or adjacent to the left side of the Q storage spaces (230) arranged in the left and right directions, and A rack system for manufacturing battery cells, wherein the Q storage spaces (230) arranged in the left and right directions and the Q corresponding duct air outlets (340) are formed on the left side of each of the first ducts (310) adjacent to the right side of each of the Q storage spaces (230), or formed on the right side of each of the first ducts (310) adjacent to the left side of each of the Q storage spaces (230).

16. In any one of claims 1 to 15, The above fan (400) is a rack system for manufacturing battery cells, installed on the upper or lower part of the rack (200).

17. In Claim 16, A chamber accommodating the above rack (200), duct (300) and fan (400); and It further includes a main duct that supplies air into the chamber, and The above main duct is installed at the top of the chamber, and The above fan (400) is a rack system for manufacturing battery cells, installed at the bottom of the above rack (200).

18. A battery cell activation method (S700) using the rack system (10) for manufacturing a battery cell according to claim 1, A case storage process (S710) of storing each of the above cases (100) on which one or more battery cells (50) are seated in each of the above storage spaces (230) of the above rack (200); and It includes an activation process (S720) for activating one or more battery cells (50) seated in each case (100) stored in each of the storage spaces (230), and In the case storage process (S710) above, each of the above duct air outlets (340) is positioned so as to face at least partially with the ventilation port (130) of at least one of the above cases (100) that is stored in the corresponding storage space (230), which is the respective storage space (230) corresponding to each of the above duct air outlets (340). In the above activation process (S720), the fan (400) is operated to supply air to one or more storage spaces (230) through the duct (400). Battery cell activation method.

19. In Claim 18, A plurality of the above cases (100) can be stored in each of the above storage spaces (230), and Each of the above duct air outlets (340) includes a plurality of sub-air outlets (342) corresponding to each of the plurality of cases (100) that are in communication with the corresponding storage space (230) and can be stored in the corresponding storage space (230). A battery cell activation method in which, in the above case storage process (S710), each of the sub-air outlets (342) of each of the above duct air outlets (340) are stored in the corresponding storage space (230) and positioned so as to face at least partially with the vents (130) of each of the above cases (100) corresponding to each of the sub-air outlets (342).

20. In claim 18 or claim 19, The above ventilation hole (130) includes a plurality of case holes (H1) that are spaced apart from each other and are formed on one side of the outer wall (120) of the case (100) and communicate the seating space (110) of the case (100) with the outside. Each of the above-mentioned duct vents (340) includes a plurality of duct holes (H3) that are connected to the corresponding storage space (230) and are spaced apart from each other. A battery cell activation method in which, in the above case storage process (S710), the plurality of duct holes (H3) of each of the above duct air outlets (340) are positioned to face each of the plurality of case holes (H1) of the above ventilation holes (130) of at least one case (100) at least partially.

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