WO2013115332A1 - 電極収納セパレータ、蓄電装置及び車両 - Google Patents
電極収納セパレータ、蓄電装置及び車両 Download PDFInfo
- Publication number
- WO2013115332A1 WO2013115332A1 PCT/JP2013/052253 JP2013052253W WO2013115332A1 WO 2013115332 A1 WO2013115332 A1 WO 2013115332A1 JP 2013052253 W JP2013052253 W JP 2013052253W WO 2013115332 A1 WO2013115332 A1 WO 2013115332A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- separator
- electrode
- pair
- sheet
- sheets
- Prior art date
Links
- 238000003860 storage Methods 0.000 title claims description 68
- 239000000919 ceramic Substances 0.000 claims abstract description 36
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 21
- 238000003466 welding Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000011888 foil Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/52—Separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
- H01G11/12—Stacked hybrid or EDL capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
-
- 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
- H01M10/02—Details
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/463—Separators, membranes or diaphragms characterised by their shape
- H01M50/466—U-shaped, bag-shaped or folded
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- 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
-
- 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
- Y02E60/13—Energy storage using capacitors
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to an electrode storage separator in which an electrode is stored, a power storage device, and a vehicle.
- rechargeable secondary batteries can be used repeatedly and are widely used in various devices and apparatuses.
- hybrid vehicles and EV vehicles In the field of vehicles, the use of fossil fuels and the reduction of carbon dioxide emissions are required, so vehicles driven by motors using this type of secondary battery as a power source, so-called hybrid vehicles and EV vehicles. (Electric Vehicle) has become widespread.
- Such secondary batteries are required to be charged and discharged with a large current and to have a large battery capacity.
- lithium ion secondary batteries are mass-produced as products.
- a secondary battery having a laminated structure As this type of secondary battery, for example, a secondary battery having a laminated structure is well known. Such a secondary battery includes a positive electrode sheet, a negative electrode sheet, and a separator that insulates these sheets alternately. And an electrode assembly formed by being stacked on each other.
- the laminated structure undergoes a manufacturing process in which the positive electrode sheet, the negative electrode sheet, and the separator are sequentially stacked, the number of stacking processes increases. Therefore, there are problems that the tact time of production is long and the productivity is not good.
- a technique has been devised in which the positive electrode sheet is stored in advance in a bag-like separator, thereby reducing the number of the above-described stacking steps and improving battery productivity (see Patent Document 1, etc.).
- An object of the present invention is to provide an electrode storage separator, a power storage device, and a vehicle that have a pair of separator sheets coated with ceramics and that can be firmly joined to each other with the pair of separator sheets storing electrodes therebetween. There is.
- an electrode storage separator that includes a pair of separator sheets facing each other and sandwiches an electrode between the pair of separator sheets.
- Each of the surfaces facing each other in the pair of separator sheets is coated with ceramics, and is not coated with the ceramics and is not coated with at least part of a region corresponding to the periphery of the electrode A part.
- the pair of separator sheets are joined to each other at the uncoated portion.
- the coated portion and the uncoated portion are provided on the separator sheet, the portions sandwiching the electrodes in the pair of separator sheets are coated with ceramics, and the separator sheets can be joined to each other in the uncoated portion.
- An electrode storage separator having such a separator sheet and storing an electrode between them can improve durability against thermal shrinkage, and a pair of separator sheets are firmly bonded with the electrode sandwiched therebetween. Is done.
- At least one of the pair of separator sheets at least a part of the surface opposite to the surface facing the electrode is preferably coated with the ceramic. According to this configuration, it is possible to improve durability against heat shrinkage of the electrode storage separator.
- an electrode storage separator that includes a pair of separator sheets facing each other and sandwiches an electrode between the pair of separator sheets.
- the entire surfaces facing each other in the pair of separator sheets constitute an uncoated portion that is not coated with ceramics.
- at least one of the pair of separator sheets at least a part of the surface opposite to the surface facing the electrode is coated with the ceramic.
- the pair of separator sheets are joined to each other at the uncoated portion. According to this configuration, the durability against thermal contraction of the electrode storage separator can be improved, and the pair of separator sheets can be firmly joined in a state where the electrodes are sandwiched between the pair of separator sheets.
- each separator sheet has a square shape, and the uncoated portion is formed along at least a part of a pair of opposite sides of the separator sheet. According to this structure, it becomes possible to join a pair of separator sheets coated with ceramics at a minimum necessary location.
- the uncoated portion is preferably formed along one side of the separator sheet over the entire length of the one side. According to this configuration, since the area where the pair of separator sheets are joined to each other is widened, the pair of separator sheets can be joined more firmly.
- the electrode includes a tab protruding outward from the periphery of the electrode on the same plane as the surface of the electrode, and the tab is sandwiched between uncoated portions of the pair of separator sheets.
- the pair of separator sheets are joined to each other on both sides of the electrode tab in the direction in which the uncoated portion extends, it is possible to prevent the electrode from being misaligned inside the electrode storage separator. .
- the electrode is preferably a positive electrode.
- the outer dimensions of the electrode storage separator and the outer dimension of the negative electrode are the same, and in order to assemble the electrode assembly, alignment when the electrode storage separator and the negative electrode are alternately stacked is easy. Become.
- a power storage device including the electrode storage separator is provided.
- the power storage device is a secondary battery.
- a vehicle equipped with the secondary battery is provided.
- a pair of separator sheets coated with ceramics can be firmly bonded in a state where an electrode is accommodated therebetween.
- the disassembled perspective view which shows the structure of the secondary battery of one Embodiment.
- the perspective view which shows the external appearance of a secondary battery.
- the disassembled perspective view which shows the structure of an electrode assembly.
- Sectional drawing which shows the location where the lead was welded in the current collection part.
- Explanatory drawing which shows the state which has arrange
- Explanatory drawing which shows the state which cut
- Explanatory drawing which shows the manufacture example of the electrode storage separator of another example.
- the perspective view which shows the modification of an electrode storage separator.
- a secondary battery 2 is used as a power source of a motor (not shown) used as a drive source of the vehicle 1. It is installed.
- the secondary battery 2 includes an electrode assembly 5 that is a power generation element, and a metal case 3 that houses the electrode assembly 5.
- the case 3 includes a case main body 4 having an opening 4a at the top, and a metal plate-like case lid 6 that seals the opening 4a of the case main body 4 in a sealed state.
- the electrode assembly 5 is housed inside the case body 4.
- a positive electrode terminal 7 which is a positive electrode terminal and a negative electrode terminal 8 which is a negative electrode terminal are provided on the upper surface of the secondary battery 2.
- the case lid 6 has a pair of opening holes 6 a, and the positive terminal 7 and the negative terminal 8 are exposed to the outside of the case 3 through the opening holes 6 a of the case cover 6.
- a pair of ring-shaped insulating members 9 that insulate the positive terminal 7 and the negative terminal 8 from the case 3 are attached between the positive terminal 7 and the negative terminal 8 and the case 3.
- the electrode assembly 5 has a plurality of layers. Each layer of the electrode assembly 5 includes an electrode storage separator 10 and a thin negative electrode sheet 11 constituting a negative electrode.
- the electrode storage separator 10 includes a bag-shaped separator body 12 and a thin positive electrode sheet 13 that is stored in the separator body 12 and that constitutes a positive electrode.
- the electrode assembly 5 has a stacked structure in which the electrode storage separator 10 and the negative electrode sheet 11 are stacked along the thickness direction of the electrode assembly 5 (stacking direction, Y-axis direction in FIG. 1).
- the negative electrode sheet 11 and the positive electrode sheet 13 constitute an electrode.
- the positive electrode sheet 13 is provided with a metal sheet-like foil 14, and a positive electrode active material layer 15 is applied to both surfaces of the foil 14, and this portion constitutes an application part 16.
- a part of the foil 14 protrudes as a tab on the same plane as the surface of the positive electrode sheet 13, and this part forms an uncoated part 17 where the positive electrode active material layer 15 is not applied.
- the tab corresponds to the uncoated portion 17.
- the negative electrode sheet 11 is also provided with a metal sheet-like foil 18, and the negative electrode active material layer 19 is applied to both surfaces of the foil 18, and the application part 20 and the non-application part 21 are formed in the same manner as the positive electrode sheet 13. ing.
- the uncoated portion 17 of the plurality of positive electrode sheets 13 and the uncoated portion 21 of the negative electrode sheet 11 are bundled in the stacking direction Y by current collecting portions 22 and 23, respectively.
- Leads 24 and 25 are welded to the current collectors 22 and 23, respectively.
- the leads 24 and 25 are fixed to the current collectors 22 and 23 at welds 26 and 27 near the roots of the current collectors 22 and 23, respectively.
- the positive terminal 7 is connected to the positive lead 24, and the negative terminal 8 is connected to the negative lead 25.
- the current collectors 22 and 23 protrude upward from the upper surface of the electrode pair 28 that is the main body of the electrode assembly 5.
- the current collectors 22 and 23 are spaced apart from each other in the vicinity of both ends in the width direction of the electrode pair 28 (X-axis direction in FIG. 1).
- the electrode storage separator 10 includes a pair of quadrangular separator sheets 29 that are stacked so as to face each other.
- the pair of separator sheets 29 are formed in a bag shape by being welded to each other on the upper side 29 a and the lower side 29 b of the separator sheet 29.
- a storage unit 30 is provided inside the electrode storage separator 10, and the positive electrode sheet 13 is stored in the storage unit 30.
- the separator sheet 29 is a sheet member that insulates the positive electrode sheet 13 and the negative electrode sheet 11.
- the electrode storage separator 10 of this embodiment has high durability against heat shrinkage by coating both surfaces thereof with ceramics.
- each separator sheet 29 corresponds to the edge of the electrode, and constitute an uncoated portion 32 to which ceramics are not applied.
- the uncoated portion 32 formed on the upper side 29a is referred to as an upper uncoated portion 32a
- the uncoated portion 32 formed on the lower side 29b is referred to as a lower uncoated portion 32b.
- the upper uncoated portion 32a and the lower uncoated portion 32b are formed over the entire length in the width direction of the electrode storage separator 10 (X-axis direction, width direction of the separator sheet 29).
- the pair of separator sheets 29 are coated with ceramics, they can be welded at the uncoated portions 32a and 32b.
- the pair of separator sheets 29 are welded over the entire length in the length direction (X-axis direction) in each of the uncoated portions 32a and 32b, and this portion is attached and fixed as a welded portion 33.
- the pair of separator sheets 29 may be welded by either intermittent welding or continuous welding.
- the welded portion 33 formed on the upper uncoated portion 32a is referred to as an upper welded portion 33a
- the welded portion 33 formed on the lower uncoated portion 32b is referred to as a lower welded portion 33b.
- the welding part 33 (33a, 33b) comprises a junction part.
- the positive electrode sheet 13 is sandwiched from above and below by the upper welded portion 33a and the lower welded portion 33b, so that the positive electrode sheet 13 is orthogonal to the X axis in the vertical direction (Z-axis direction, in the plane of the separator sheet 29). Direction).
- a pair of positioning welds 33c which are part of the upper welds 33a, are disposed in the vicinity of the base portion of the uncoated part 17 of the positive electrode sheet 13. Thereby, the positive electrode sheet 13 is positioned in the left-right direction (X-axis direction in FIG. 7) in the storage unit 30.
- the positioning weld 33c constitutes a joint.
- a pair of long strip-shaped separator sheet base materials 34 whose surfaces are coated with ceramics are prepared.
- An upper uncoated portion 32a and a lower uncoated portion 32b to which ceramics are not applied are formed on the upper side and the lower side of each separator sheet base material 34, respectively.
- a plurality of positive electrode sheets 13 are arranged side by side between the pair of separator sheet base materials 34.
- a pair of the separator sheet base materials 34 are welded at the upper uncoated portion 32 a and the lower uncoated portion 32 b.
- the positive electrode sheet 13 is wrapped by the two separator sheet base materials 34 and provided integrally (unitized). That is, a pair of strip-shaped separator sheet base material 34 and a plurality of positive electrode sheets 13 are assembled as one strip-shaped separator unit 35.
- the separator sheet base material 34 is formed in a bag shape, and the plurality of positive electrode sheets 13 are accommodated between the pair of separator sheet base materials 34.
- positioning welding portions 33c are arranged on both the left and right sides of the uncoated portion 17 of the positive electrode sheet 13, whereby the positive electrode sheet 13 is positioned in the left-right direction (X-axis direction in FIG. 9).
- the some electrode storage separator 10 is formed by cut
- the strip separator unit 35 can be cut by various methods such as punching or cutting. Thereby, a plurality of electrode storage separators 10 are formed from one strip separator unit 35.
- the electrode storage separators 10 and the negative electrode sheets 11 are alternately stacked. After the necessary number of electrode storage separators 10 and the negative electrode sheet 11 are stacked, the uncoated portions 17 of the plurality of positive electrode sheets 13 and the uncoated portions 21 of the plurality of negative electrode sheets 11 are bundled together at the same poles, and leads 24 , 25 are welded to assemble the electrode assembly 5. After assembling the electrode assembly 5, the secondary battery 2 is assembled by housing the electrode assembly 5 in the case body 4 and closing the opening 4 a of the case body 4 with the case lid 6.
- the uncoated portions 32a and 32b that are not coated with ceramics are provided on the upper side 29a and the lower side 29b of the two separator sheets 29 that are coated with ceramics, respectively.
- the separator main body 12 is formed in a bag shape by welding the separator sheets 29 together. Therefore, by using the separator sheet 29 whose surface is coated with ceramics, it is possible to improve the durability against thermal shrinkage of the electrode storage separator, and the separator sheet 29 is firmly fixed by a simple method of welding. An electrode storage separator is provided.
- separator sheet 29 Since the separator sheet 29 is coated with ceramics, durability against heat shrinkage when the electrode storage separator 10 is used is improved. In addition, since the upper side 29a and the lower side 29b of the separator sheet 29 are provided with uncoated portions 32a and 32b which are not coated with ceramics, two separator sheets 29 are welded in a bag shape at the uncoated portions 32a and 32b. can do. Therefore, the separator sheet 29 whose surface is coated with ceramics can be firmly joined in a bag shape with the positive electrode sheet 13 being accommodated therebetween.
- the one-part electrode storage separator 10 By enclosing the positive electrode sheet 13 in advance with two separator sheets 29, the one-part electrode storage separator 10 is formed.
- the electrode assembly 5 is assembled by alternately stacking the electrode storage separator 10 and the negative electrode sheet 11. For this reason, when assembling the electrode assembly 5, the number of operations of stacking can be reduced, and the tact time of production is shortened. Therefore, the productivity of the electrode assembly 5 and thus the secondary battery 2 can be improved.
- the positive electrode (positive electrode sheet 13) is stored in the electrode storage separator 10 among the positive and negative electrodes.
- the negative electrode needs to be larger than the positive electrode in consideration of the exchange of ions between the electrodes. For this reason, if the positive electrode sheet 13 is stored inside the electrode storage separator 10 as in the present embodiment, the outer dimension of the electrode storage separator 10 and the outer dimension of the negative electrode sheet 11 are the same as a result.
- the negative electrode is larger than the positive electrode.
- the uncoated portions 32a and 32b are provided on the upper side 29a and the lower side 29b of the separator sheet 29 coated with ceramics. Therefore, a pair of long strip-shaped separator sheet base materials 34 coated on the surface except for the upper side and the lower side are prepared, and a plurality of positive electrode sheets 13 are arranged between the separator sheet base materials 34, and then the separator sheet base material 34. Can be manufactured by a simple process of welding each other on the upper side and the lower side thereof and cutting them between each pair of adjacent positive electrode sheets 13.
- Uncoated portions 32a and 32b were formed along the upper side 29a and the lower side 29b of the separator sheet 29 over the entire length thereof. For this reason, since it becomes possible to take the joining surface of the separator sheet 29 widely, a pair of separator sheet 29 can be attached and fixed more firmly.
- a plurality of electrode storage separators may be manufactured by folding the separator sheet 41 at the center and welding and cutting the separator sheet 41.
- the electrode storage separator 10 can be manufactured in a simple form in which one separator sheet 41 is bent.
- the uncoated portions 32a and 32b are not limited to being formed over the entire length along at least one of the upper side 29a and the lower side 29b, and may be formed partially.
- the uncoated portions 32a and 32b may be formed on the left side and the right side of the separator sheet 29, for example.
- the size (area) of the uncoated portions 32a and 32b can be changed as appropriate.
- the upper uncoated part 32a and the lower uncoated part 32b may have different lengths.
- the entire surface facing the positive electrode sheet 13 (electrode) may constitute an uncoated part 32 that is not coated with ceramics.
- the surface opposite to the surface facing the positive electrode sheet 13 (electrode), that is, at least a part of the front surface is coated with ceramics.
- at least a part of the rear surface of the separator sheet 29 shown in the rear part of FIG. 12 may be coated with ceramics.
- the front surface of the separator sheet 29 shown in the front part of FIG. 12 and the rear surface of the separator sheet 29 shown in the rear part of FIG. 12 may be coated with ceramics.
- the separator sheet 29 at least only the surface (sheet one surface) on which the electrodes are arranged may be coated with ceramics.
- each positive electrode sheet 13 when the positive electrode sheets 13 are arranged on the separator sheet base material 34 may be, for example, a direction rotated about 90 degrees counterclockwise in FIG.
- At least one of alumina, titania, zirconia, aluminum nitride, magnesia, silicon oxide, silicon carbide, and silicon nitride can be selected and used.
- the electrode storage separator 10 is not limited to being manufactured by disposing a plurality of positive electrode sheets 13 on one long strip-shaped separator sheet base material 34 and cutting the positive electrode sheets 13 for each positive electrode sheet 13.
- the positive electrode sheet 13 may be disposed on a pair of separator sheets 29 that have been cut to a final size in advance, and the edges may be welded.
- the separator sheet 29 is not limited to welding, and may be joined in other forms such as adhesion or fixing using tape.
- the positive electrode terminal 7 and the negative electrode terminal 8 are not limited to being arranged on the same side of the electrode pair 28, and may be arranged on different sides.
- the current collectors 22 and 23 are not limited to the upper surface of the electrode pair 28, and may be disposed on the side surface or the lower surface.
- the positive electrode current collector 22 is not limited to one.
- a plurality of positive electrode current collectors 22 may be provided, and these may be electrically connected by one or a plurality of leads. The same can be said for the current collector 23 of the negative electrode.
- the positive electrode sheet 13 and the negative electrode sheet 11 are not limited to thin sheet members, and may be plate members having a predetermined thickness, for example.
- the materials for the positive electrode sheet 13, the negative electrode sheet 11, and the separator sheet 29 can be changed as appropriate.
- the structure of the positive electrode terminal 7, the negative electrode terminal 8, and the current collection parts 22 and 23 is not restricted to the said structure, It can change into another structure.
- the opening 4a of the case body 4 is not limited to being formed on the upper surface of the case body 4, and may be formed at another location such as a side surface of the case body 4.
- the electrode assembly 5 is not limited to the laminated structure, and may be a wound structure having a positive and negative electrode layer by winding a sheet-like electrode pair a plurality of times.
- the power storage device is not limited to a secondary battery, and may be a power storage device that is charged and discharged by an electric double layer capacitor, for example.
- the electrode in the electrode storage separator 10 is not limited to the positive electrode, and the negative electrode may be stored in the electrode storage separator 10.
- the positive lead 24 and the negative lead 25 may be welded by various methods such as spot welding, butt welding, and projection welding. Further, the welding is not limited to resistance welding, and other methods can be adopted.
- the electrode storage separator 10 is not limited to a bag shape, and can be changed to other shapes such as a cylindrical shape.
- the shape of the separator sheet 29 is not limited to a square shape, and can be appropriately changed to various shapes.
- the electrode assembly 5 or the secondary battery 2 is not limited to being mounted on the vehicle 1 and can be mounted on other devices and apparatuses.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Cell Separators (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims (10)
- 互いに対向する一対のセパレータシートを備え、前記一対のセパレータシートの間に電極を挟み込む電極収納セパレータにおいて、
前記一対のセパレータシートにおいて互いに対向する面の各々は、セラミックスでコートされたコート部と、前記セラミックスでコートされておらず、前記電極の周縁に対応する領域の少なくとも一部に配置される未コート部とを備え、
前記一対のセパレータシートは、前記未コート部において、互いに接合されることを特徴とする電極収納セパレータ。 - 前記一対のセパレータシートの少なくともいずれか一方において、前記電極と対向する面とは反対側の面の少なくとも一部は、前記セラミックスでコートされていることを特徴とする請求項1に記載の電極収納セパレータ。
- 互いに対向する一対のセパレータシートを備え、前記一対のセパレータシートの間に電極を挟み込む電極収納セパレータにおいて、
前記一対のセパレータシートにおいて互いに対向する各面の全体が、セラミックスでコートされていない未コート部を構成し、
前記一対のセパレータシートの少なくともいずれか一方において、前記電極と対向する面とは反対側の面の少なくとも一部は、前記セラミックスでコートされ、
前記一対のセパレータシートは、前記未コート部において、互いに接合されることを特徴とする電極収納セパレータ。 - 前記各セパレータシートは、四角状であり、前記未コート部は、前記セパレータシートの互いに対向する一対の辺の少なくとも一部に沿って形成されていることを特徴とする請求項1~3のうちいずれか一項に記載の電極収納セパレータ。
- 前記未コート部は、前記セパレータシートの一辺に沿って、該一辺の全長に亘って形成されていることを特徴とする請求項4に記載の電極収納セパレータ。
- 前記電極は、該電極の表面と同一の平面上において、前記電極の周縁から外方へ突出するタブを備え、
前記タブは、前記一対のセパレータシートの未コート部によって挟まれることを特徴とする請求項1~5のうちいずれか一項に記載の電極収納セパレータ。 - 前記電極は、正極であることを特徴とする請求項1~6のうちいずれか一項に記載の電極収納セパレータ。
- 請求項1~7のうちいずれか一項に記載の電極収納セパレータを備えることを特徴とする蓄電装置。
- 前記蓄電装置は二次電池であることを特徴とする請求項8に記載の蓄電装置。
- 請求項9に記載の二次電池を搭載することを特徴とする車両。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/375,483 US9466820B2 (en) | 2012-02-03 | 2013-01-31 | Separator incorporating electrode, electrical storage device, and vehicle |
DE112013000826.2T DE112013000826T5 (de) | 2012-02-03 | 2013-01-31 | Separator, der eine Elektrode aufweist, elektrische Speichervorrichtung und Fahrzeug |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012022196A JP5333617B2 (ja) | 2012-02-03 | 2012-02-03 | 電極収納セパレータ、蓄電装置及び車両 |
JP2012-022196 | 2012-02-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013115332A1 true WO2013115332A1 (ja) | 2013-08-08 |
Family
ID=48905362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/052253 WO2013115332A1 (ja) | 2012-02-03 | 2013-01-31 | 電極収納セパレータ、蓄電装置及び車両 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9466820B2 (ja) |
JP (1) | JP5333617B2 (ja) |
DE (1) | DE112013000826T5 (ja) |
WO (1) | WO2013115332A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109792018A (zh) * | 2016-09-27 | 2019-05-21 | 罗伯特·博世有限公司 | 用于制造电池组电池用的薄膜堆叠的方法 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016006718A (ja) * | 2012-10-12 | 2016-01-14 | 日産自動車株式会社 | 袋詰電極、積層型電気デバイス、および袋詰電極の製造方法 |
EP2940775B1 (en) * | 2012-12-28 | 2019-03-27 | Nissan Motor Co., Ltd | Electrode and method for bonding a separator on the electrode |
JP5850038B2 (ja) | 2013-12-25 | 2016-02-03 | 株式会社豊田自動織機 | 蓄電装置 |
JP6364854B2 (ja) * | 2014-03-24 | 2018-08-01 | 日産自動車株式会社 | 電気デバイスのセパレータ接合装置 |
WO2015145551A1 (ja) * | 2014-03-24 | 2015-10-01 | 日産自動車株式会社 | 電気デバイスのセパレータ接合方法および電気デバイスのセパレータ接合装置 |
JP6413277B2 (ja) * | 2014-03-24 | 2018-10-31 | 日産自動車株式会社 | 電気デバイスのセパレータ接合方法、電気デバイスのセパレータ接合装置、および電気デバイス |
JP2015232966A (ja) * | 2014-06-10 | 2015-12-24 | 株式会社Gsユアサ | 蓄電素子 |
DE102015222051A1 (de) | 2015-11-10 | 2017-05-11 | Robert Bosch Gmbh | Elektrodeneinheit für eine Batteriezelle und Verfahren zur Untersuchung einer Elektrodeneinheit |
JP6739139B2 (ja) * | 2017-12-13 | 2020-08-12 | ハイメカ株式会社 | 二次電池のセパレータ接合装置、二次電池および二次電池のセパレータ接合方法 |
CN116325334A (zh) | 2021-06-25 | 2023-06-23 | 株式会社Lg新能源 | 包括不平坦部的隔板、包括其的电极组件、和制造电极组件的方法 |
KR20230000936A (ko) | 2021-06-25 | 2023-01-03 | 주식회사 엘지에너지솔루션 | 요철부를 포함하는 분리막, 이를 포함하는 전극조립체 및 상기 전극조립체의 제조방법 |
FR3141802A1 (fr) * | 2022-11-04 | 2024-05-10 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Accumulateur électrochimique dont le séparateur imprégné d’électrolyte liquide présente des zones à propriétés de stabilité thermique différenciées. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002008618A (ja) * | 2000-06-26 | 2002-01-11 | Nippon Muki Co Ltd | 鉛蓄電池用セパレータ |
JP2003092100A (ja) * | 2001-09-19 | 2003-03-28 | Nec Corp | 積層型電池 |
JP2009277397A (ja) * | 2008-05-13 | 2009-11-26 | Hitachi Maxell Ltd | ラミネート形非水二次電池 |
JP2011159434A (ja) * | 2010-01-29 | 2011-08-18 | Toyota Motor Corp | セパレータとその製造方法 |
JP2011175749A (ja) * | 2010-02-23 | 2011-09-08 | Toyota Motor Corp | 電池,およびその電池を使用した車両,電池搭載機器 |
-
2012
- 2012-02-03 JP JP2012022196A patent/JP5333617B2/ja not_active Expired - Fee Related
-
2013
- 2013-01-31 US US14/375,483 patent/US9466820B2/en not_active Expired - Fee Related
- 2013-01-31 WO PCT/JP2013/052253 patent/WO2013115332A1/ja active Application Filing
- 2013-01-31 DE DE112013000826.2T patent/DE112013000826T5/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002008618A (ja) * | 2000-06-26 | 2002-01-11 | Nippon Muki Co Ltd | 鉛蓄電池用セパレータ |
JP2003092100A (ja) * | 2001-09-19 | 2003-03-28 | Nec Corp | 積層型電池 |
JP2009277397A (ja) * | 2008-05-13 | 2009-11-26 | Hitachi Maxell Ltd | ラミネート形非水二次電池 |
JP2011159434A (ja) * | 2010-01-29 | 2011-08-18 | Toyota Motor Corp | セパレータとその製造方法 |
JP2011175749A (ja) * | 2010-02-23 | 2011-09-08 | Toyota Motor Corp | 電池,およびその電池を使用した車両,電池搭載機器 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109792018A (zh) * | 2016-09-27 | 2019-05-21 | 罗伯特·博世有限公司 | 用于制造电池组电池用的薄膜堆叠的方法 |
JP2019530177A (ja) * | 2016-09-27 | 2019-10-17 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングRobert Bosch Gmbh | 電池セルのための膜スタックを製造する方法 |
Also Published As
Publication number | Publication date |
---|---|
US9466820B2 (en) | 2016-10-11 |
US20150017509A1 (en) | 2015-01-15 |
JP2013161633A (ja) | 2013-08-19 |
DE112013000826T5 (de) | 2014-12-04 |
JP5333617B2 (ja) | 2013-11-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2013115332A1 (ja) | 電極収納セパレータ、蓄電装置及び車両 | |
US10490795B2 (en) | Electricity storage device | |
US8530068B2 (en) | Square battery and manufacturing method of the same | |
JP2014041724A (ja) | 蓄電装置、及び電極組立体の製造方法 | |
JP5699955B2 (ja) | 蓄電装置及び車両 | |
JP2008004274A (ja) | 蓄電素子 | |
JP5906912B2 (ja) | 蓄電装置 | |
JP2019061779A (ja) | 蓄電装置及び蓄電装置の製造方法 | |
JP2019530176A (ja) | 電池セルのための電極ユニットの製造方法、及び、電極ユニット | |
JP2014017159A (ja) | 蓄電装置 | |
JP5765295B2 (ja) | 蓄電装置、及び電極組立体の製造方法 | |
JP5838837B2 (ja) | 電極収納セパレータ、蓄電装置及び車両 | |
JP2017076576A (ja) | 電池セル及びその製造方法 | |
JP5765259B2 (ja) | 電極収納セパレータ、電極体、蓄電装置及び車両 | |
JP2015026522A (ja) | 電極収納セパレータ及び蓄電装置 | |
JP2014067542A (ja) | 蓄電装置、及び電極組立体の製造方法 | |
JP5842742B2 (ja) | 電極収納セパレータ及び蓄電装置 | |
JP5884622B2 (ja) | 蓄電装置 | |
JP2012175084A (ja) | 蓄電デバイス、蓄電セルの製造方法および蓄電デバイスの製造方法 | |
JP5724956B2 (ja) | 蓄電装置 | |
JP7331573B2 (ja) | 蓄電素子 | |
JP6365045B2 (ja) | 蓄電装置 | |
JP7322872B2 (ja) | 蓄電素子 | |
JP5699986B2 (ja) | 蓄電装置 | |
JP2023030278A (ja) | 蓄電素子 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13743578 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14375483 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112013000826 Country of ref document: DE Ref document number: 1120130008262 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13743578 Country of ref document: EP Kind code of ref document: A1 |