KR102144883B1 - Apparatus for Transferring Battery Cell in Sliding Manner - Google Patents

Abstract

The present invention is a battery cell transfer device that transfers a battery cell to a moisture removal device for a process of removing moisture inside the battery cell during the battery cell production process, wherein a plurality of battery cells are vertically arranged and mounted in a state in which the sides are in contact with each other. Tray; A transfer unit that transfers the tray to the moisture removal device while the tray is located on the upper surface; An elevating unit located at the lower end of the transfer unit and adjusting the vertical position of the transfer unit; And a base portion coupled to a lower end of the elevating portion and having a structure for moving the battery cell transfer device between processes.

Description

Sliding type battery cell transfer device {Apparatus for Transferring Battery Cell in Sliding Manner}

The present invention relates to a sliding-type battery cell transfer device.

With the remarkable development of IT (Information Technology) technology, various portable information and communication devices are spreading, and the 21st century is developing into a'ubiquitous society' that enables high-quality information services regardless of time and place.

In the foundation for development into such a ubiquitous society, lithium secondary batteries occupy an important position. Specifically, lithium secondary batteries capable of charging and discharging are not only widely used as an energy source for wireless mobile devices, but are also proposed as a solution to air pollution such as conventional gasoline vehicles and diesel vehicles using fossil fuels. It is also used as an energy source for existing electric vehicles and hybrid electric vehicles.

As described above, as devices to which lithium secondary batteries are applied are diversified, lithium secondary batteries are being diversified to provide an output and capacity suitable for a device to which they are applied. In addition, there is a strong demand for miniaturization and thinness.

The lithium secondary battery described above can be classified into a cylindrical battery cell, a prismatic battery cell, a pouch-type battery cell, or the like according to its shape. Among them, pouch-type battery cells that can be stacked with a high degree of integration, have high energy density per weight, and are inexpensive and easily deformable are attracting much attention.

The pouch-type battery cell has a structure in which an electrode assembly consisting of a positive electrode, a negative electrode, and a separator disposed therebetween is embedded in a battery case made of a laminate sheet together with an electrolyte, and the outer periphery of the battery case is sealed and sealed.

Such a pouch-type battery cell is transferred to a moisture removal device by a skid truck, which is a battery cell transfer device, for a process of removing moisture inside the battery cell during the battery cell manufacturing process.

A conventional battery cell transfer device has a structure in which a plurality of battery cells are mounted in a tray, and the tray is transferred to a moisture removal device to transfer the battery cells into the moisture removal device.

The tray on which the battery cells are mounted is located on the top of the skid cart, and the tray is transferred to the moisture removal device by a roller structure formed on the skid cart.

Conventionally, since the roller structure as described above is made of a metal material, there is a problem that metal dust generated when the tray and the roller contact and grind flows into the battery cell. Metal dust introduced into the battery cell in this way causes a low voltage failure of the battery cell.

In addition, the roller structure is a closed-type, non-detachable structure that is formed on the skid cart, which makes it difficult for workers to clean and remove the generated metal dust, which increases the amount of metal dust flowing into the battery cell. It led to the problem of letting go.

Therefore, there is a high need for a technology that can fundamentally solve this problem.

An object of the present invention is to solve the problems of the prior art as described above and technical problems that have been requested from the past.

Specifically, it is an object of the present invention, in the process of transferring the battery cell to the moisture removal device, it is possible to suppress the dust generated in the battery cell transfer device, and transfer the battery cell structure that can easily remove dust or foreign matter To provide a device.

Battery cell transfer device according to the present invention for achieving this object,

A battery cell transfer device that transfers the battery cell to a moisture removal device for the process of removing moisture inside the battery cell during the battery cell production process,

A tray in which a plurality of battery cells are vertically arranged and mounted with side surfaces in contact with each other;

A transfer unit that transfers the tray to the moisture removal device while the tray is located on the upper surface;

An elevating unit located at the lower end of the transfer unit and adjusting the vertical position of the transfer unit; And

A base portion coupled to the lower end of the elevating portion and having a structure for moving between processes of the battery cell transfer device;

It may be composed of a structure including.

As a specific example of the present invention, the conveying unit may be formed of a roller structure so that the tray can be conveyed to the moisture removal device by a sliding method.

Specifically, the transfer unit,

A rectangular frame in which the lifting unit is coupled to the lower end;

At least one bracket extending from one side of the frame to the other side facing the frame and mounted on the upper end of the frame; And

A plurality of rollers mounted on the bracket along the extension direction of the bracket;

It may be composed of a structure including.

The bracket may include a pair of supporting bars spaced apart from each other at intervals corresponding to the length of the roller, and mounting grooves into which the shafts of the rollers are respectively inserted into each of the supporting bars have an upward opening structure. May be formed.

Therefore, the roller is open and detachable to the mounting grooves of the bracket, so even if dust or foreign matter that may occur between the tray and the conveying part is formed on the bracket or roller, the roller is removed from the bracket to facilitate dust or foreign matter. Can be removed. Accordingly, it is possible to suppress the introduction of dust or foreign substances into the battery cell.

Specifically, the mounting groove may be recessed downward to a size of 30% to 70% of the thickness of the supporting bar.

When the mounting groove is recessed downward to a size of less than 30% of the thickness of the supporting bar, the shaft of the roller may not be sufficiently inserted into the mounting groove, and thus structurally unstable may occur. On the other hand, when the mounting groove exceeds 70% of the thickness of the supporting bar and is indented downward, the shafter of the roller is excessively inserted into the mounting groove so that the roller is located under the upper surface of the bracket. As a result, it may not be possible to contact the tray.

In the supporting bar of the bracket, at least the mounting groove in contact with the shaft may be made of a self-active polymer material or may be coated with a self-active polymer material.

In addition, the supporting bar of the bracket may be made of a self-active polymer material. In this way, since the supporting bar of the bracket is made of a self-active polymer material, dust generated due to frictional force between the bracket and the roller can be suppressed.

As a specific example of the roller, the roller,

A rolling unit that contacts the tray and transfers the tray to the moisture removal device; And

A shaft protruding from both ends of the rolling part while penetrating the rolling part in the longitudinal direction, and inserted into the mounting grooves of the bracket;

It may consist of a structure that includes.

In addition, at least the outer surface of the rolling part may be made of a self-active polymer material or may be coated with a self-active polymer material.

Specifically, the rolling portion may be made of a self-active polymer material, and more specifically, the self-active polymer material may be MC-Nylon (Mono Cast Nylon), but between brackets and rollers or between trays and rollers. It is not limited thereto as long as it is a material capable of suppressing dust generated by frictional forces between them.

As described above, since the roller portion of the roller is made of a self-active polymer material, dust generated due to frictional force between the tray and the roller can be suppressed.

The diameter of the shaft may be 50% to 70% of the diameter of the rolling part. When the diameter of the shaft is less than 50% of the diameter of the rolling part, the diameter of the shaft mounted in the mounting groove of the bracket becomes small, and thus structurally unstable may occur. On the other hand, when the diameter of the shaft is larger than 70% of the diameter of the rolling part, the mounting groove formed in the bracket must be formed large, and the contact area between the bracket and the shaft increases, resulting in dust generation due to frictional force. Can increase the possibility of

The battery cell may be a pouch-type battery cell having a plate-shaped structure.

Specifically, in the battery cell, an electrode assembly having a stacked structure of a positive electrode, a separator, and a negative electrode is embedded together with an electrolyte in a battery case in which the electrode assembly receiving unit is formed, and sealing surplus by thermal fusion is applied to the outer periphery of the electrode assembly receiving unit. It may consist of a structure in which an additional is formed.

The electrode assembly may have a folding type structure, a stack type structure, a stack/folding type structure, or a lamination/stack type structure.

The folding type, stack type, stack/folding type, and lamination/stack type electrode structure will be described in detail as follows.

First, the unit cell of the folding-type structure can be manufactured by coating a mixture containing an electrode active material on each metal current collector, placing a separator sheet between the positive electrode and the negative electrode in the form of a dried and pressed sheet, and winding it. .

The unit cell of the stacked structure is a separator cut into a predetermined size corresponding to the positive and negative plates between the positive electrode plate and the negative electrode plate cut to a predetermined size after coating an electrode mixture on each metal current collector, drying and pressing. It can be manufactured by interposing and then laminating.

A unit cell of a stack/folding structure is a structure in which the anode and the cathode face each other, and includes two or more unit cells in which two or more electrode plates are stacked, and the unit cells are wound with one or more separation films in a non-overlapping form, or Alternatively, it may be manufactured by bending the separation film to the size of the unit cell and interposing it between the unit cells.

In some cases, in a structure in which the anode and the cathode face each other, one or more single electrode plates may be additionally included between arbitrary unit cells and/or on the outer surface of the outermost unit cell.

The unit cell may be an S-type unit cell in which both outermost electrode plates have the same electrode, and a D-type unit cell in which both outermost electrode plates have opposite electrodes.

The S-type unit cell may be an SC-type unit cell in which both outermost electrode plates are positive electrodes, and an SA-type unit cell in which outermost electrode plates on both sides are negative electrodes.

In the unit cell of the lamination/stack type structure, the electrode mixture is coated on each metal current collector, dried and pressed, and cut to a predetermined size, and then sequentially from the bottom of the cathode, the separator on the top of the cathode, and the anode, and It can be manufactured by laminating a separator thereon.

As a specific example of the battery case, the battery case is made of a laminate sheet including an excellent durable resin outer layer, a barrier metal layer, and a heat-melt resin sealant layer, wherein the resin sealant layers are thermally fused to each other. I can.

Since the outer layer of the resin must have excellent resistance from the external environment, it is necessary to have a predetermined or higher tensile strength and weather resistance. In this respect, polyethylene terephthalate (PET) and a stretched nylon film may be preferably used as the polymer resin of the outer resin layer.

In addition to the function of preventing the inflow or leakage of foreign substances such as gas and moisture, the barrier metal layer may be preferably aluminum so as to exhibit a function of improving the strength of the battery case.

The resin sealant layer has heat adhesion (heat adhesion), low hygroscopicity in order to suppress the invasion of the electrolyte, and does not expand or erosion by the electrolyte, a polyolefin-based resin may be preferably used. Preferably, non-stretched polypropylene (CPP) may be used.

As a specific example of the lifting part, the lifting part may have a bellows structure. Accordingly, the upper and lower positions of the transport unit can be easily adjusted, and the operator can easily position the tray on the upper surface of the transport unit.

As a specific example of the base portion, a plurality of wheels for inter-process movement of the battery cell transfer device may be mounted at the lower end of the base portion. Accordingly, the battery cell transfer device can be easily moved according to the progress of the battery cell process.

The present invention also provides a battery cell manufactured using the battery cell transfer device.

The type of the battery cell is not particularly limited, but as a specific example, it may be a lithium secondary battery such as a lithium ion battery or a lithium ion polymer battery having advantages such as high energy density, discharge voltage, and output stability.

In general, a lithium secondary battery is composed of a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte containing a lithium salt.

The positive electrode is prepared, for example, by coating a mixture of a positive electrode active material, a conductive material, and a binder on a positive electrode current collector, followed by drying, and if necessary, a filler may be further added to the mixture.

The positive electrode active material may be a layered compound such as lithium cobalt oxide (LiCoO ₂ ) or lithium nickel oxide (LiNiO ₂ ), or a compound substituted with one or more transition metals; Lithium manganese oxides such as formula Li _1+x Mn _2-x O ₄ (wherein x is 0 to 0.33), LiMnO ₃ , LiMn ₂ O ₃ , and LiMnO ₂ ; Lithium copper oxide (Li ₂ CuO ₂ ); Vanadium oxides such as LiV ₃ O ₈ , LiFe ₃ O ₄ , V ₂ O ₅ , and Cu ₂ V ₂ O ₇ ; Ni site-type lithium nickel oxide represented by the formula LiNi _1-x M _x O ₂ (where M = Co, Mn, Al, Cu, Fe, Mg, B or Ga, and x = 0.01 to 0.3); Formula LiMn _2-x M _x O ₂ (where M = Co, Ni, Fe, Cr, Zn or Ta, and x = 0.01 to 0.1) or Li ₂ Mn ₃ MO ₈ (where M = Fe, Co, A lithium manganese composite oxide represented by Ni, Cu or Zn); LiMn ₂ O _{4 in} which part of Li in the formula is substituted with alkaline earth metal ions; Disulfide compounds; Fe ₂ (MoO ₄ ) ₃ and the like may be mentioned, but the present invention is not limited thereto.

The conductive material is typically added in an amount of 1 to 30% by weight based on the total weight of the mixture including the positive electrode active material. Such a conductive material is not particularly limited as long as it has conductivity without causing a chemical change in the battery, and examples thereof include graphite such as natural graphite or artificial graphite; Carbon blacks such as carbon black, acetylene black, ketjen black, channel black, furnace black, lamp black, and thermal black; Conductive fibers such as carbon fibers and metal fibers; Metal powders such as carbon fluoride, aluminum, and nickel powder; Conductive whiskey such as zinc oxide and potassium titanate; Conductive metal oxides such as titanium oxide; Conductive materials such as polyphenylene derivatives may be used.

The binder is a component that aids in bonding of an active material and a conductive material and bonding to a current collector, and is typically added in an amount of 1 to 30% by weight based on the total weight of the mixture including the positive electrode active material. Examples of such a binder include polyvinylidene fluoride, polyvinyl alcohol, carboxymethylcellulose (CMC), starch, hydroxypropylcellulose, regenerated cellulose, polyvinylpyrrolidone, tetrafluoroethylene, polyethylene , Polypropylene, ethylene-propylene-diene terpolymer (EPDM), sulfonated EPDM, styrene butyrene rubber, fluorine rubber, and various copolymers.

The filler is selectively used as a component that suppresses the expansion of the positive electrode, and is not particularly limited as long as it is a fibrous material without causing chemical changes to the battery, and examples thereof include olefin-based polymers such as polyethylene and polypropylene; Fibrous materials such as glass fiber and carbon fiber are used.

The negative electrode is manufactured by coating and drying a negative electrode active material on a negative electrode current collector, and if necessary, components as described above may be optionally further included.

Examples of the negative active material include carbon such as non-graphitized carbon and graphite-based carbon; Li _x Fe ₂ O ₃ (0≤x≤1), Li _x WO ₂ (0≤x≤1), Sn _x Me _1-x Me' _y O _z (Me: Mn, Fe, Pb, Ge; Me' : Al, B, P, Si, elements of groups 1, 2, and 3 of the periodic table, halogen, metal complex oxides such as 0<x≦1;1≦y≦3;1≦z≦8); Lithium metal; Lithium alloy; Silicon-based alloys; Tin-based alloys; SnO, SnO ₂ , PbO, PbO ₂ , Pb ₂ O ₃ , Pb ₃ O ₄ , Sb ₂ O ₃ , Sb ₂ O ₄ , Sb ₂ O ₅ , GeO, GeO ₂ , Bi ₂ O ₃ , Bi ₂ O ₄ , and metal oxides such as Bi ₂ O ₅ ; Conductive polymers such as polyacetylene; Li-Co-Ni-based materials and the like can be used.

The separator and the separation film are interposed between the anode and the cathode, and an insulating thin film having high ion permeability and mechanical strength is used. The pore diameter of the separator is generally 0.01 to 10 µm, and the thickness is generally 5 to 130 µm. Examples of such a separation membrane include olefin-based polymers such as polypropylene having chemical resistance and hydrophobicity; Sheets or non-woven fabrics made of glass fiber or polyethylene are used. When a solid electrolyte such as a polymer is used as the electrolyte, the solid electrolyte may also serve as a separator.

In addition, in one specific example, in order to improve the safety of the battery, the separator and/or the separation film may be an organic/inorganic composite porous SRS (Safety-Reinforcing Separators) separator.

The SRS separator is manufactured by using inorganic particles and a binder polymer as active layer components on a polyolefin-based separator substrate, and at this time, the pore structure included in the separator substrate itself and the interstitial volume between the inorganic particles as the active layer component It has a uniform pore structure formed.

In the case of using such an organic/inorganic composite porous separator, compared to the case of using a conventional separator, there is an advantage in that it is possible to suppress an increase in the thickness of the battery due to swelling during formation, and as a binder polymer component. When a polymer capable of gelling when impregnated with a liquid electrolyte is used, it can be used as an electrolyte at the same time.

In addition, since the organic/inorganic composite porous separator can exhibit excellent adhesion properties by controlling the content of inorganic particles and binder polymers as active layer components in the separator, it is characterized in that a battery assembly process can be easily performed.

The inorganic particles are not particularly limited as long as they are electrochemically stable. That is, the inorganic particles that can be used in the present invention are not particularly limited as long as the oxidation and/or reduction reaction does not occur in the operating voltage range (eg, 0 to 5V based on Li/Li+) of the applied battery. Particularly, in the case of using inorganic particles having ion transfer capability, the ionic conductivity in the electrochemical device can be increased to improve performance, so it is preferable that the ion conductivity is as high as possible. In addition, when the inorganic particles have a high density, it is difficult to disperse during coating, as well as a problem of weight increase during battery manufacturing, so it is preferable that the density is as small as possible. In addition, in the case of an inorganic material having a high dielectric constant, the ionic conductivity of the electrolyte may be improved by contributing to an increase in the degree of dissociation of an electrolyte salt, such as a lithium salt, in a liquid electrolyte.

The lithium salt-containing non-aqueous electrolytic solution is composed of a polar organic electrolytic solution and a lithium salt. As the electrolyte, a non-aqueous liquid electrolyte, an organic solid electrolyte, an inorganic solid electrolyte, and the like are used.

As the non-aqueous liquid electrolyte, for example, N-methyl-2-pyrrolidinone, propylene carbonate, ethylene carbonate, butylene carbonate, dimethyl carbonate, diethyl carbonate, gamma -Butyl lactone, 1,2-dimethoxy ethane, tetrahydroxy franc (franc), 2-methyl tetrahydrofuran, dimethyl sulfoxide, 1,3-dioxolone, formamide, dimethylformamide, dioxolone , Acetonitrile, nitromethane, methyl formate, methyl acetate, phosphoric acid tryster, trimethoxy methane, dioxolone derivative, sulfolane, methyl sulfolane, 1,3-dimethyl-2-imidazolidinone, propylene carbo Aprotic organic solvents such as nate derivatives, tetrahydrofuran derivatives, ethers, methyl pyropionate, and ethyl propionate may be used.

As the organic solid electrolyte, for example, a polyethylene derivative, a polyethylene oxide derivative, a polypropylene oxide derivative, a phosphate ester polymer, a poly agitation lysine, a polyester sulfide, a polyvinyl alcohol, a polyvinylidene fluoride, A polymer or the like containing an ionic dissociating group may be used.

As the inorganic solid electrolyte, for example, Li ₃ N, LiI, Li ₅ NI ₂ , Li ₃ N-LiI-LiOH, LiSiO ₄ , LiSiO ₄ -LiI-LiOH, Li ₂ SiS ₃ , Li ₄ SiO ₄ , Nitrides, halides, and sulfates of Li such as Li ₄ SiO ₄ -LiI-LiOH and Li ₃ PO ₄ -Li ₂ S-SiS ₂ may be used.

The lithium salt is a material soluble in the non-aqueous electrolyte, for example, LiCl, LiBr, LiI, LiClO ₄ , LiBF ₄ , LiB ₁₀ Cl ₁₀ , LiPF ₆ , LiCF ₃ SO ₃ , LiCF ₃ CO ₂ , LiAsF _{6, LiSbF 6, LiAlCl 4,} CH 3 SO 3 Li, CF 3 SO 3 Li, (CF 3 SO 2) 2 NLi, chloroborane lithium, lower aliphatic carboxylic acid lithium, lithium tetraphenyl borate and imide have.

In addition, non-aqueous electrolyte solutions include pyridine, triethylphosphite, triethanolamine, cyclic ether, ethylene diamine, n-glyme, and hexaphosphate triamide for the purpose of improving charge/discharge characteristics and flame retardancy. , Nitrobenzene derivative, sulfur, quinone imine dye, N-substituted oxazolidinone, N,N-substituted imidazolidine, ethylene glycol dialkyl ether, ammonium salt, pyrrole, 2-methoxy ethanol, aluminum trichloride, etc. May be. In some cases, in order to impart non-flammability, a halogen-containing solvent such as carbon tetrachloride or ethylene trifluoride may be further included, and carbon dioxide gas may be further included in order to improve high-temperature storage characteristics.

The present invention also provides a battery pack including two or more of the battery cells.

The present invention also provides a device including the battery pack as a power source.

The device may be selected from a mobile phone, a wearable electronic device, a portable computer, a smart pad, a netbook, a light electronic vehicle (LEV), an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, and a power storage device.

Since the structure of these devices and a method of manufacturing them are known in the art, detailed descriptions thereof will be omitted herein.

As described above, the battery cell conveying apparatus according to the present invention is open and detachable to the mounting grooves of the bracket, so that even if dust or foreign matter that may occur between the tray and the conveying part is formed in the bracket or roller, the roller The dust or foreign matter can be easily removed by removing it from the bracket.

In addition, by forming the supporting bar of the bracket and the rolling portion of the roller made of an oil-active polymer material, it is possible to suppress dust generated due to frictional force between the bracket and the roller and dust generated due to frictional force between the tray and the roller. Accordingly, it is possible to suppress the inflow of dust or foreign substances into the battery cell.

1 is a side view of a battery cell transfer apparatus according to an embodiment of the present invention;
Figure 2 is a top view of the battery cell transfer device of Figure 1;
3 is a horizontal sectional view of the transfer unit of the battery cell transfer device of FIG. 1;
Figure 4 is a vertical cross-sectional view of the conveying portion of Figure 3;
5 is a side view of a roller of the battery cell transfer device of FIG. 1;

Hereinafter, the present invention will be described in more detail with reference to the drawings according to an embodiment of the present invention, but the scope of the present invention is not limited thereto.

1 schematically shows a side view of a battery cell transfer device according to an embodiment of the present invention, and FIG. 2 schematically shows a top view of the battery cell transfer device of FIG. 1, and FIG. 3 A horizontal cross-sectional view of the transfer unit of the battery cell transfer device of FIG. 1 is schematically shown, and FIG. 4 schematically shows a vertical cross-sectional view of the transfer unit of FIG. 3, and FIG. The side view of is schematically shown.

Referring to FIGS. 1 to 5, the battery cell transfer device 10 includes a tray 100, a transfer part 200, an elevating part 300, and a base part 400.

The tray 100 has an open top, and a plurality of battery cells 110 are vertically arranged and mounted with side surfaces in contact with each other.

The transfer unit 200 transfers the tray 100 to a moisture removal device (not shown) while the tray 100 is located on the upper surface.

The transfer unit 200 has a roller structure so that the tray 100 can be transferred to the moisture removal device by a sliding method.

Specifically, the transfer unit 200 is composed of a frame 210, brackets 220 and rollers 230.

At the lower end of the frame 210, the elevating part 300 is coupled, and has a rectangular shape in a plane, and the bracket 220 is mounted on the upper end of the frame 210, and a bracket along the extension direction of the bracket 220 A plurality of rollers 230 are mounted on 220.

The bracket 220 includes a pair of supporting bars 221 that are spaced apart from each other by a gap W corresponding to the length of the roller 230, and each of the supporting bars 221 has a shaft of the roller 230 ( Mounting grooves 222 into which the 232 is respectively inserted are formed in an upwardly open structure.

The mounting groove 222 is recessed downward to a size T2 of 50% of the thickness T1 of the supporting bar 221.

The supporting bar 221 is made of a self-lubricating polymer material, and accordingly, dust generated due to friction between the supporting bar 221 and the roller 230 can be suppressed.

The roller 230 is composed of a rolling part 231 and a shaft 232. The rolling part 231 contacts the tray 100 and transfers the tray 100 to the moisture removal device, and the shaft 232 protrudes from both ends of the rolling part while penetrating the rolling part 231 in the longitudinal direction. , It is mounted in the mounting groove 222 of the bracket 220.

The diameter D2 of the shaft 232 is 50% of the diameter D1 of the rolling part 231.

The rolling part 231 is made of a self-active polymer material, and accordingly, dust generated due to friction between the tray 100 and the rolling part 231 can be suppressed.

The lifting unit 300 has a bellows structure, and accordingly, the vertical position of the transport unit 200 can be easily adjusted, and the operator can easily position the tray 100 on the upper surface of the transport unit 200.

A plurality of wheels 410 for moving between processes of the battery cell transfer device 10 are mounted at the lower end of the base unit 400. Accordingly, the battery cell transfer device 10 can be easily moved according to the progress of the battery cell process.

Those of ordinary skill in the field to which the present invention belongs will be able to perform various applications and modifications within the scope of the present invention based on the above contents.

Claims (17)

A battery cell transfer device that transfers the battery cell to a moisture removal device for the process of removing moisture inside the battery cell during the battery cell production process,
A tray in which a plurality of battery cells are arranged and mounted;
A transfer unit that transfers the tray to the moisture removal device while the tray is located on the upper surface;
An elevating unit located at the lower end of the transfer unit and adjusting the vertical position of the transfer unit; And
A base portion coupled to the lower end of the elevating portion and having a structure for moving between processes of the battery cell transfer device;
Battery cell transfer device comprising a. The battery cell transfer device according to claim 1, wherein the transfer unit has a roller structure so that the tray can be transferred to the moisture removal device by a sliding method. The method of claim 2, wherein the transfer unit,
A rectangular frame in which the lifting unit is coupled to the lower end;
At least one bracket extending from one side of the frame to the other side facing the frame and mounted on the upper end of the frame; And
A plurality of rollers mounted on the bracket along the extension direction of the bracket;
Battery cell transfer device comprising a. The method of claim 3, wherein the bracket includes a pair of supporting bars spaced apart from each other at intervals corresponding to the length of the roller, and each of the supporting bars includes mounting grooves into which the shafts of the rollers are respectively inserted. Battery cell transfer device, characterized in that formed in an upward open structure. The battery cell transfer apparatus according to claim 4, wherein the mounting groove is recessed downward to a size of 30% to 70% of the thickness of the supporting bar. The battery cell transfer apparatus according to claim 4, wherein at least the mounting grooves in contact with the shaft are made of a self-active polymer material or are coated with a self-active polymer material in the supporting bar of the bracket. The battery cell transfer apparatus according to claim 6, wherein the supporting bar of the bracket is made of a self-lubricating polymer material. The method of claim 4, wherein the roller,
A rolling unit that contacts the tray and transfers the tray to the moisture removal device; And
A shaft protruding from both ends of the rolling part while penetrating the rolling part in the longitudinal direction, and inserted into the mounting grooves of the bracket;
Battery cell transfer device comprising a. The battery cell transfer apparatus according to claim 8, wherein at least the outer surface of the rolling part is made of a self-active polymer material or is coated with a self-active polymer material. The battery cell transfer apparatus according to claim 9, wherein the rolling part is made of a self-active polymer material. The battery cell transfer device according to claim 7 or 10, wherein the self-active polymer material is MC-Nylon (Mono Cast Nylon). The battery cell transfer apparatus of claim 1, wherein the battery cell is a pouch-type battery cell having a plate-shaped structure. The battery cell transfer apparatus according to claim 1, wherein the lifting part has a bellows structure. The battery cell transfer device according to claim 1, wherein a plurality of wheels for moving the battery cell transfer device between processes are mounted at a lower end of the base part. delete delete delete

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