WO2022260306A1 - 배터리 셀 고정 장치 및 이를 포함하는 전해액 함침 장치 - Google Patents
배터리 셀 고정 장치 및 이를 포함하는 전해액 함침 장치 Download PDFInfo
- Publication number
- WO2022260306A1 WO2022260306A1 PCT/KR2022/007142 KR2022007142W WO2022260306A1 WO 2022260306 A1 WO2022260306 A1 WO 2022260306A1 KR 2022007142 W KR2022007142 W KR 2022007142W WO 2022260306 A1 WO2022260306 A1 WO 2022260306A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery cell
- fixing device
- holder
- cylindrical battery
- cell fixing
- Prior art date
Links
- 239000003792 electrolyte Substances 0.000 title description 23
- 238000010294 electrolyte impregnation Methods 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 8
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 64
- 239000008151 electrolyte solution Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000652 nickel hydride Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/30—Mixing the contents of individual packages or containers, e.g. by rotating tins or bottles
- B01F29/32—Containers specially adapted for coupling to rotating frames or the like; Coupling means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/30—Mixing the contents of individual packages or containers, e.g. by rotating tins or bottles
- B01F29/33—Mixing the contents of individual packages or containers, e.g. by rotating tins or bottles by imparting a combination of movements to two or more containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/60—Mixers with shaking, oscillating, or vibrating mechanisms with a vibrating receptacle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a battery cell fixing device and an electrolyte impregnation device including the same.
- Secondary batteries which are highly applicable to each product group and have electrical characteristics such as high energy density, are used not only in portable devices but also in electric vehicles (EVs) or hybrid electric vehicles (HEVs) driven by an electrical driving source. It is universally applied. These secondary batteries have not only the primary advantage of significantly reducing the use of fossil fuels, but also the advantage of not generating any by-products due to the use of energy, so they are attracting attention as a new energy source for eco-friendliness and energy efficiency improvement.
- EVs electric vehicles
- HEVs hybrid electric vehicles
- a battery pack may be configured by connecting a plurality of battery cells in series.
- a battery pack may be configured by connecting a plurality of battery cells in parallel according to a charge/discharge capacity required for the battery pack. Accordingly, the number of battery cells included in the battery pack may be variously set according to a required output voltage and/or charge/discharge capacity.
- the electrolyte impregnation rate is a very important factor affecting the lifespan and capacity of the battery, and the higher the electrolyte impregnation rate, the more advantageous it is.
- the electrolyte impregnation rate may be different between the top and bottom of the electrode assembly. More specifically, there may be cases where residual electrolyte is collected in the lower portion of the cylindrical battery cell after injection of the electrolyte, and the upper portion is not properly impregnated with the electrolyte.
- the electrolyte injected through the upper opening of the battery can stays only on the upper part of the battery can and extends to the lower part of the battery can by capillarity. It may not be communicated well.
- the present invention has been devised to solve the above problems, and an object of the present invention is to improve the electrolyte impregnation rate of the cylindrical battery cell by evenly impregnating the electrode assembly accommodated inside the cylindrical battery cell with the electrolyte solution as a whole.
- the present invention provides a battery cell fixing device and an electrolyte impregnation device compatible with various cylindrical battery cells by stably fixing various cylindrical battery cells regardless of the appearance and size of the cylindrical battery cell. that serves another purpose.
- a battery cell fixing device for solving the above object is a battery cell fixing device including a plurality of holder units coupled to the cylindrical battery cell along the outer circumference of the cylindrical battery cell, wherein the Each of the plurality of holder units includes a holder body configured to cover a portion of an outer circumferential surface of the cylindrical battery cell; and a beading fixing portion protruding from the holder body toward the cylindrical battery cell and configured to be inserted into a beading portion formed by press-fitting an outer circumferential surface of the cylindrical battery cell.
- the battery cell fixing device may further include a vibration source connection unit provided on an outer surface of at least one holder body among the plurality of holder units and configured to be connected to a vibration source.
- the battery cell fixing device may further include a holder unit coupling part configured to couple the neighboring holder units to each other.
- the holder body may have an extended shape to have a height corresponding to that of the cylindrical battery cell.
- the holder body may have a shape extending along an outer circumferential direction of the cylindrical battery cell.
- a protruding length of the beading fixing unit may correspond to a pressing depth of the beading unit.
- the beading fixing part may have a shape extending along an outer circumferential direction of the cylindrical battery cell.
- the beading fixing part may be configured to be movable and fixed from the holder body along a radial direction of the cylindrical battery cell.
- the beading fixing part may be configured to be fixed in a pulled-out state by a length corresponding to a pressing depth of the beading part of the cylindrical battery cell.
- the holder unit fastening part may be provided in the holder body of each of a plurality of holder units.
- the holder unit fastening part may be configured to move in a direction in which the holder unit is withdrawn from the holder body and in a direction in which it is inserted into the holder body.
- the holder unit fastening part may be configured to move in a circumferential direction of the cylindrical battery cell.
- the holder unit fastening part may be provided on one side and the other side of the holder body, respectively.
- the fastening units provided in each of the vibration units adjacent to each other may be drawn out in directions toward each other and coupled to each other.
- Electrolyte impregnation device according to an embodiment of the present invention, the battery cell fixing device of the present invention each coupled to a plurality of cylindrical battery cells; and a rotator for rotating the holder unit around a predetermined central axis of rotation.
- the electrolyte impregnation device may further include a vibration source connected to the battery cell fixing device.
- the number of vibration sources may be provided as many as the number of holder units provided in one battery cell fixing device.
- the holder body may be disposed so that one end of both ends of the cylindrical battery cell in a height direction, which is located close to the region where the beading part is formed, faces the rotational center axis.
- the central axis of rotation may be arranged parallel to the ground.
- the vibration source may be configured to be connected to the battery cell fixing device after driving of the rotator is stopped.
- the rotator may be configured to resume driving after driving of the vibration source is terminated and a connection between the vibration source and the battery cell fixing device is released.
- the plurality of battery cell fixing devices may be configured to be alternately connected to the vibration source.
- the battery cell fixing device is configured such that one end of both ends of the cylindrical battery cell coupled to the battery cell fixing device in the height direction, which is located close to the region where the beading portion is formed, is connected to the vibration source at a position facing the ground.
- the entire electrode assembly accommodated inside the cylindrical battery cell can be evenly impregnated with the electrolyte solution, thereby improving the electrolyte impregnation rate of the cylindrical battery cell.
- the battery cell fixing device may be compatible with various cylindrical battery cells.
- the battery cell fixing device can come into close contact with the cylindrical battery cell, vibration generated from the vibration source can be transmitted to the cylindrical battery cell more effectively.
- the present invention may have various other effects, which will be described in each embodiment, or descriptions of effects that can be easily inferred by those skilled in the art will be omitted.
- FIG. 1 is a diagram for explaining a battery cell fixing device according to an embodiment of the present invention.
- FIG. 2 and 3 are views for explaining a process of coupling the battery cell fixing device of FIG. 1 and the battery cell.
- FIG. 4 is a diagram for explaining a battery cell fixing device according to another embodiment of the present invention.
- FIG. 5 is a diagram for explaining a connection relationship between the battery cell fixing device of FIG. 1 and a vibration source.
- FIG. 6 is a view for explaining an electrolyte impregnation device including the battery cell fixing device of FIG. 1 .
- FIG. 1 is a view for explaining a battery cell fixing device according to an embodiment of the present invention
- FIGS. 2 and 3 are views for explaining a process in which the battery cell fixing device of FIG. 1 and a cylindrical battery cell are coupled.
- FIG. 4 is a diagram for explaining a battery cell fixing device according to another embodiment of the present invention.
- the battery cell fixing device 10 includes a plurality of holders coupled to the cylindrical battery cell C along the outer circumference of the cylindrical battery cell C. It includes unit 100. Meanwhile, the battery cell fixing device 10 may further include a vibration source connection part 200 and/or a holder unit fastening part 300 .
- the holder unit 100 is provided in plurality.
- the battery cell fixing device 10 may include three holder units 100A, 100B, and 100C.
- the battery cell fixing device 10 of the present invention achieves an effect capable of adhering to the cylindrical battery cell C even if the cylindrical battery cell C has a slightly different shape and/or size. can do.
- the plurality of holder units 100 are spaced apart from each other at a predetermined interval along the circumferential direction of the cylindrical battery cell C, and the cylindrical battery cell C ) can cover the outer circumferential surface of
- the effect of fixing the cylindrical battery cell C may increase.
- the fixing force of the cylindrical battery cell C may be further improved.
- a range of shapes and/or sizes of cylindrical battery cells C compatible with the battery cell fixing device 10 may be expanded.
- the holder unit 100 includes a holder body 110 and a beading fixing part 120 .
- the holder body 110 is configured to cover a portion of the outer circumferential surface of the cylindrical battery cell C.
- the holder body 110 may have a shape extending along the outer circumferential direction of the cylindrical battery cell C.
- the inner surface of the holder body 110 may have a substantially similar curvature to that of the cylindrical battery cell C. Accordingly, the holder body 110 may adhere to the outer circumferential surface of the cylindrical battery cell C. Accordingly, vibration generated from the vibration source (see FIGS. 5 and 6 ) can be more efficiently transmitted to the cylindrical battery cell C.
- the holder body 110 may have a shape that covers at least a portion of the entire area in the height direction (direction parallel to the Z-axis) of the cylindrical battery cell C.
- the holder body 110 may cover only a portion of the outer circumferential surface of the cylindrical battery cell C adjacent to an upper portion where the beading portion B is located.
- the beading part (B) is press-fitting the outer circumferential circumference of the battery can to a predetermined depth so that the electrode assembly (not shown) accommodated inside the battery can in the cylindrical battery cell (C) does not escape to the outside of the battery can.
- the portion defined as the top of the battery cell (C) is located close to the region where the beading portion (B) is formed among both ends in the height direction (direction parallel to the Z-axis) of the battery cell (C). means the end.
- the holder body 110 may have an extended shape to have a height corresponding to that of the cylindrical battery cell C. In this case, since the contact area between the holder body 110 and the cylindrical battery cell C is increased, external vibration can be transmitted to the cylindrical battery cell C more efficiently.
- the beading fixing part 120 may protrude from the holder body 110 toward the cylindrical battery cell C.
- the beading fixing part 120 may be inserted into the beading part B of the cylindrical battery cell C to accurately fix the position of the cylindrical battery cell C in the height direction (parallel to the Z-axis).
- the protrusion length of the beading fixing part 120 may correspond to the pressing depth of the beading part B.
- the protruding length of the beading fixing part 120 is substantially the same as the pressing depth of the beading part B, the inside of the holder body 110 when the beading fixing part 120 is inserted into the beading part B as deeply as possible.
- the surface may be in close contact with the outer circumferential surface of the cylindrical battery cell (C). Accordingly, the fixing force of the cylindrical battery cell C can be maximized, and vibration by the vibration source 30 to be described later can be well transmitted to the cylindrical battery cell C.
- the battery cell fixing device 10 of the present invention universally and firmly secures all of the cylindrical battery cells C having different sizes. It needs to be configured so that it can be fixed. Therefore, the beading fixing part 120 employed in the battery cell fixing device 10 of the present invention may be configured to be movable and fixable from the holder body 110 in the radial direction of the cylindrical battery cell C. More specifically, the beading fixing part 120 may be withdrawn from the holder body 110 in a sliding manner along the radial direction, and may be fixed in a drawn out state. For example, referring to FIG.
- the beading fixing part 120 may be pulled out by a length corresponding to the pressing depth of the beading part B of the cylindrical battery cell C to be coupled and then fixed. Accordingly, according to the present invention, it can be universally applied to cylindrical battery cells (C) having different sizes, and can accurately fix the position of the cylindrical battery cell (C) in the height direction (direction parallel to the Z axis).
- the battery cell fixing device 10 of the present invention has a structure capable of stably fixing the cylindrical battery cell C, so that processes for efficiently impregnating the cylindrical battery cell C with an electrolyte solution can stably proceed. make it possible
- the vibration source connection part 200 may be provided on an outer surface of at least one holder body 110 among a plurality of holder units 100 and connected to the vibration source 30. . That is, the vibration source connection unit 200 is provided in the holder body 110 and may function as a fastening unit having a structure that allows the vibration source 30 to be easily fastened to the holder body 110 .
- the vibration source connection part 200 may have a bar shape substantially vertically provided on an outer surface of the holder body 110 .
- the vibration source connection part 200 is not limited to this rod shape, and any structure can be used as long as the external vibration source 30 can be easily connected to the holder body 110.
- the vibration source connection unit 200 may be provided in at least one of the plurality of holder units 100 .
- the vibration source connection unit 200 may be provided in only one holder unit 100 among the three holder units 100, or in two holder units ( 100) may be provided.
- the vibration source connection unit 200 may be provided in all three holder units 100 .
- the holder unit fastening part 300 may be configured to couple adjacent holder units 100 to each other.
- the holder unit fastening part 300 may be provided in the holder body 110 , for example.
- the holder unit fastening part 300 may be configured to move in a direction in which it is withdrawn from the holder body 110 and in a direction in which it is inserted into the holder body 110 .
- the holder unit fastening part 300 may be configured to move along a substantially circumferential direction of the cylindrical battery cell C.
- the holder unit fastening part 300 may be respectively provided on one side and the other side of the holder body 110, for example.
- the holder unit fastening parts 300 provided on each of the holder units 100 adjacent to each other may be pulled out in a direction toward each other and coupled to each other.
- the mutual fastening method of the holder unit fastening parts 300 provided in each of the holder units 100 adjacent to each other is not limited, and may be configured to enable, for example, buckle coupling and/or hook coupling.
- a magnet may be provided at the end of each holder unit fastening part 300 so that when adjacent holder units 100 come closer to each other by a predetermined distance, they may be fastened to each other by magnetic force.
- the holder unit fastening part 300 may be mutually coupled to form one battery cell fixing device 10 .
- the plurality of holder units 100 may be spaced apart from each other by a predetermined distance.
- the distance between the plurality of holder units 100 may be different according to the circumferential length of the cylindrical battery cell C.
- the holder unit fastening part 300 is configured to connect a pair of holder units 100 between a pair of holder units 100 spaced apart from each other in the holder body, and thus has a relatively large diameter.
- the cylindrical battery cell C may also be covered by the battery cell fixing device 10 of the present invention.
- FIG. 5 is a diagram for explaining a connection relationship between the battery cell fixing device of FIG. 1 and a vibration source
- FIG. 6 is a diagram for explaining an electrolyte impregnation device including the battery cell fixing device of FIG. 1 .
- an electrolyte impregnation device 1 includes at least one battery cell fixing device 10 and a rotator 20 . Meanwhile, the electrolyte impregnation device 1 may further include a vibration source 30 .
- the electrolyte impregnation rate may be different between the top and bottom of the electrode assembly. More specifically, there may be cases in which the remaining electrolyte is collected in the lower portion of the cylindrical battery cell C after the electrolyte is injected, and the upper portion is not properly impregnated with the electrolyte.
- the electrolyte injected through the upper opening of the battery can stays only on the upper part of the battery can and extends to the lower part of the battery can by capillarity. It may not be communicated well. Therefore, it is necessary to uniformly impregnate the electrolyte solution over the entire area of the electrode assembly by using centrifugal force by rotating the cylindrical battery cell C into which the electrolyte solution is injected. In addition, for more efficient electrolyte impregnation, vibration may be applied to the cylindrical battery cell C.
- the electrolyte impregnation device 1 connects the rotator 20 to the plurality of battery cell fixing devices 10 or connects both the rotator 20 and the vibration source 30 ,
- the electrolyte may be evenly impregnated over the entire area of the electrode assembly accommodated inside the plurality of cylindrical battery cells (C).
- the electrolyte impregnation device 1 according to an embodiment of the present invention may include a plurality of battery cell fixing devices 10 . Accordingly, the electrolyte impregnation rate of the plurality of cylindrical battery cells C may be simultaneously improved.
- the rotator 20 may rotate the holder unit 100 around a predetermined central axis of rotation.
- the rotator 20 may include a driving unit that drives about a central axis of rotation, and extends approximately radially from the driving unit to hold the battery cell fixing device 10. It may also include a connecting rod.
- the rotator 20 may include a columnar frame having a constant radius around a predetermined rotational central axis, and the columnar frame may be connected to the driving unit by a predetermined connection unit.
- the rotator 20 may rotate clockwise and/or counterclockwise.
- the rotator 20 may continuously rotate in a predetermined direction, or may rotate clockwise and counterclockwise after completing a predetermined number of rotations.
- the rotator 20 may continuously rotate in the same direction like a waterwheel, or the direction of rotation may continuously change like an hourglass.
- the holder body 110 may be disposed such that an upper portion of the cylindrical battery cell C faces the central axis of rotation of the rotator 20 .
- centrifugal force is generated as the battery cell fixing device 10 and the cylindrical battery cell C rotate around the central axis of rotation, so that the electrolyte contained in the cylindrical battery cell C is It can move downward by receiving centrifugal force.
- the electrolyte solution remaining only on the upper portion of the cylindrical battery cell C may quickly move to the lower portion of the cylindrical battery cell C. Accordingly, the electrolyte impregnation rate may increase throughout the cylindrical battery cell C.
- the holder body 110 may be disposed so that the lower portion of the cylindrical battery cell C faces the central axis of rotation of the rotator 20 .
- centrifugal force is generated as the battery cell fixing device 10 and the cylindrical battery cell C rotate around the central axis of rotation, so that the electrolyte contained in the cylindrical battery cell C is It can move upward by receiving centrifugal force. Therefore, according to this arrangement, the electrolyte impregnation rate can be improved when the remaining electrolyte is collected in the lower portion of the cylindrical battery cell C after the electrolyte is injected and the upper portion is not properly impregnated with the electrolyte.
- the central axis of rotation may be arranged substantially parallel to the ground. Accordingly, the rotation plane of the rotator 20 may be substantially perpendicular to the ground. Accordingly, the cylindrical battery cell C coupled to the battery cell fixing device 10 connected to the rotator 20 may be in an inverted state during rotation.
- the top of the cylindrical battery cell C coupled to the battery cell fixing device 10 positioned at the top of the rotator 20 faces the central axis of rotation. At this time, the cylindrical battery cell C may be in an inverted state. Meanwhile, the cylindrical battery cell C coupled to the battery cell fixing device 10 positioned at the bottom of the rotator 20 may be in an upright state.
- a vibration source 30 may be connected to the battery cell fixing device 10 .
- the vibration source 30 may be connected to the vibration source connection unit 200 of the battery cell fixing device 10 .
- the vibration source 30 may be any source that generates vibration.
- the vibration source 30 may be an ultrasonic generator or a facility capable of vertical/horizontal movement.
- the vibration source 30 may be an oscillator.
- the number of vibration sources 30 may be provided as many as the number of holder units 100 provided in one battery cell fixing device 10 .
- the vibration source 30 may be provided in a smaller number than the number of holder units 100 provided in one battery cell fixing device 10 .
- the vibration source 30 may be connected to only one holder unit 100 among a plurality of holder units 100 provided in the corresponding battery cell fixing device 10 .
- the vibration source 30 may be configured to be connected to the battery cell fixing device 10 after the rotator 20 stops driving. More specifically, the vibration source 30 may be connected to the battery cell fixing device 10 after the driving of the rotator 20 is stopped, and before the restart of the rotator 20 starts, the battery cell fixing device 10 It can be configured to disconnect with.
- the upper part of the cylindrical battery cell C coupled to the battery cell fixing device 10, that is, the beading portion B of both ends in the height direction of the battery cell C is One end located close to the formed region may be configured to be connected to the vibration source 30 at a position facing the ground. That is, the battery cell fixing device 10 may be connected to the vibration source 30 at a position where the cylindrical battery cell C connected to the battery cell fixing device 10 is in an inverted state.
- the rotation is temporarily suspended, and when the battery cell fixing device 10 is located at the top of the rotator 20, the battery cell fixing device 10 ) may be connected to the vibration source 30.
- the electrolyte concentrated in the lower portion of the cylindrical battery cell C by the centrifugal force receives the vibration generated by the vibration source 30 and flows down in the direction of gravity. Accordingly, the electrolyte may repeatedly move to one side and the other side along the height direction (parallel to the Z-axis) of the cylindrical battery cell C, whereby the entire area of the electrode assembly may be evenly impregnated.
- the vibration source 30 may be configured to be disconnected from the battery cell fixing device 10 after operating for a predetermined time. At this time, the rotator 20 may start re-driving. Accordingly, the cylindrical battery cell C may receive centrifugal force due to rotation again.
- the plurality of battery cell fixing devices 10 may be alternately connected to the vibration source 30 .
- the vibration source 30 may be configured to be connected to the battery cell fixing device 10 only at the top of the rotator 20, that is, at a position farthest from the ground.
- the rotating plurality of battery cell fixing devices 10 may be alternately connected to the vibration source 30 .
- the electrolyte impregnation device 1 including four battery cell fixing devices 10 as shown in FIG. 6, when the driving stop cycle of the rotator 20 becomes one rotation, fixing any one battery cell Since only the device 10 is connected to the vibration source 30, the impregnation rate may be different for each cylindrical battery cell C. Accordingly, the driving stop period of the rotator 20 may be, for example, 3/4 rotation. In this case, since the rotator 20 is stopped after 3/4 rotation, and the battery cell fixing device 10 located at the top is connected to the vibration source 30 at the time of stopping, all battery cell fixing devices ( 10) may be alternately connected to the vibration source 30.
- the driving stop cycle of the rotator 20 is not limited to this, and any cycle is possible as long as all battery cell fixing devices 10 included in the electrolyte impregnation device 1 can be alternately connected to the vibration source 30 do.
- the electrolyte impregnation device 1 according to an embodiment of the present invention may be configured to rotate the battery cell C by stably coupling with the plurality of cylindrical battery cells C.
- the electrolyte solution impregnation device 1 can smoothly move the electrolyte solution injected from the top of the battery cell C to the bottom of the battery cell C.
- the electrolyte impregnation device 1 according to an embodiment of the present invention may be configured to apply vibration to the battery cell C.
- the electrolyte impregnation device 1 causes the electrolyte concentrated in the lower part of the battery cell C to move quickly to the upper part again as the centrifugal force according to the rotational motion of the battery cell C is applied to the entire area of the electrode assembly.
- the electrolyte solution can be uniformly impregnated throughout.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
Description
Claims (23)
- 원통형 배터리 셀의 외주면 둘레를 따라 상기 원통형 배터리 셀에 결합되는 복수의 홀더 유닛을 포함하는 배터리 셀 고정 장치로서,상기 복수의 홀더 유닛 각각은,상기 원통형 배터리 셀의 외주면 일부를 커버하도록 구성되는 홀더 본체; 및상기 홀더 본체로부터 상기 원통형 배터리 셀을 향해 돌출되며, 상기 원통형 배터리 셀의 외주면이 압입되어 형성된 비딩부에 삽입되도록 구성되는 비딩 고정부;를 포함하는 배터리 셀 고정 장치.
- 제 1 항에 있어서,상기 배터리 셀 고정 장치는,상기 복수의 홀더 유닛 중 적어도 하나의 상기 홀더 본체의 외측면 상에 구비되어 진동원과 연결될 수 있도록 구성되는 진동원 연결부를 더 포함하는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 1 항에 있어서,상기 배터리 셀 고정 장치는,이웃하는 상기 홀더 유닛을 상호 결합시키도록 구성되는 홀더 유닛 체결부를 더 포함하는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 1 항에 있어서,상기 홀더 본체는,상기 원통형 배터리 셀의 높이와 대응되는 높이를 갖도록 연장된 형태를 갖는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 1 항에 있어서,상기 홀더 본체는,상기 원통형 배터리 셀의 외주 방향을 따라 연장된 형태를 갖는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 1 항에 있어서,상기 비딩 고정부의 돌출 길이는,상기 비딩부의 압입 깊이와 대응되는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 1 항에 있어서,상기 비딩 고정부는,상기 원통형 배터리 셀의 외주 방향을 따라 연장된 형태를 갖는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 1 항에 있어서,상기 비딩 고정부는,상기 홀더 본체로부터 상기 원통형 배터리 셀의 반경 방향을 따라 이동 및 고정 가능하도록 구성되는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 8 항에 있어서,상기 비딩 고정부는,상기 원통형 배터리 셀의 상기 비딩부의 압입 깊이와 대응되는 길이만큼 인출된 상태에서 고정되도록 구성되는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 3 항에 있어서,상기 홀더 유닛 체결부는,복수의 홀더 유닛 각각의 상기 홀더 본체 내에 구비되는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 10 항에 있어서,상기 홀더 유닛 체결부는,상기 홀더 본체로부터 인출되는 방향 및 상기 홀더 본체의 내측으로 삽입되는 방향으로 움직이도록 구성되는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 11 항에 있어서,상기 홀더 유닛 체결부는,상기 원통형 배터리 셀의 원주 방향을 따라 움직이도록 구성되는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 3 항에 있어서,상기 홀더 유닛 체결부는,상기 홀더 본체의 일 측 및 타 측에 각각 구비되는 것을 특징으로 하는 배터리 셀 고정 장치.
- 제 13 항에 있어서,서로 인접한 진동 유닛 각각에 구비된 체결부는,서로를 향하는 방향으로 인출되어 상호 결합되도록 구성되는 것을 특징으로 하는 배터리 셀 고정 장치.
- 복수의 원통형 배터리 셀에 각각 결합되는 복수의 제 1 항 내지 제14항 중 어느 한 항에 따른 배터리 셀 고정 장치; 및소정의 회전 중심축을 중심으로, 상기 홀더 유닛을 회전시키는 로테이터;를 포함하는 전해액 함침 장치.
- 제 15 항에 있어서,상기 전해액 함침 장치는,상기 배터리 셀 고정 장치에 연결되는 진동원을 더 포함하는 것을 특징으로 하는 전해액 함침 장치.
- 제 16 항에 있어서,상기 진동원은,하나의 상기 배터리 셀 고정 장치에 구비되는 상기 홀더 유닛의 개수만큼 구비되는 것을 특징으로 하는 전해액 함침 장치.
- 제 15 항에 있어서,상기 홀더 본체는, 상기 원통형 배터리 셀의 높이 방향 양 단부 중 상기 비딩부가 형성된 영역과 가깝게 위치하는 일 측 단부가 상기 회전 중심축을 향하도록 배치되는 것을 특징으로 하는 전해액 함침 장치.
- 제 16 항에 있어서,상기 회전 중심축은,지면에 나란한 것을 특징으로 하는 전해액 함침 장치.
- 제 19 항에 있어서,상기 진동원은,상기 로테이터의 구동 정지 후에 상기 배터리 셀 고정 장치에 연결되도록 구성되는 것을 특징으로 하는 전해액 함침 장치.
- 제 20 항에 있어서,상기 로테이터는,상기 진동원의 구동이 종료되고 상기 진동원과 상기 배터리 셀 고정 장치의 연결이 해제된 이후에 구동을 재개하도록 구성되는 것을 특징으로 하는 전해액 함침 장치.
- 제 21 항에 있어서,복수의 상기 배터리 셀 고정 장치는,교번하여 상기 진동원에 연결되도록 구성되는 것을 특징으로 하는 전해액 함침 장치.
- 제 22 항에 있어서,상기 배터리 셀 고정 장치는,상기 배터리 셀 고정 장치에 결합된 원통형 배터리 셀의 높이 방향 양 단부 중 상기 비딩부가 형성된 영역과 가깝게 위치하는 일 측 단부가 지면을 향하는 위치에서 상기 진동원에 연결되도록 구성되는 것을 특징으로 하는 전해액 함침 장치.
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US18/267,056 US20240014532A1 (en) | 2021-06-09 | 2022-05-18 | Battery cell fixing device and electrolyte impregnation device including the same |
JP2023536883A JP2024503785A (ja) | 2021-06-09 | 2022-05-18 | バッテリーセル固定装置及びそれを含む電解液含浸装置 |
EP22820434.3A EP4254578A4 (en) | 2021-06-09 | 2022-05-18 | BATTERY CELL FASTENING DEVICE AND ELECTROLYTIM IMPREGNATION DEVICE THEREFOR |
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- 2022-05-18 JP JP2023536883A patent/JP2024503785A/ja active Pending
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EP4254578A4 (en) | 2024-08-14 |
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