WO2023191582A1 - 배터리셀 및 이를 포함하는 배터리모듈 - Google Patents
배터리셀 및 이를 포함하는 배터리모듈 Download PDFInfo
- Publication number
- WO2023191582A1 WO2023191582A1 PCT/KR2023/004356 KR2023004356W WO2023191582A1 WO 2023191582 A1 WO2023191582 A1 WO 2023191582A1 KR 2023004356 W KR2023004356 W KR 2023004356W WO 2023191582 A1 WO2023191582 A1 WO 2023191582A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- case
- plating layer
- battery cell
- scratch
- battery
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 75
- 239000002184 metal Substances 0.000 claims abstract description 75
- 238000007747 plating Methods 0.000 claims description 62
- 239000002826 coolant Substances 0.000 claims description 34
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 5
- 229920006254 polymer film Polymers 0.000 claims description 4
- 238000004382 potting Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 25
- 238000005260 corrosion Methods 0.000 abstract description 14
- 230000007797 corrosion Effects 0.000 abstract description 14
- 239000000498 cooling water Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 230000003449 preventive effect Effects 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004078 waterproofing Methods 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- 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
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/1245—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the external coating on the casing
-
- 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
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
- H01M50/141—Primary casings; Jackets or wrappings for protecting against damage caused by external factors for protecting against humidity
-
- 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
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
- H01M50/145—Primary casings; Jackets or wrappings for protecting against damage caused by external factors for protecting against corrosion
-
- 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 and a battery module including the same, and in particular, to a battery cell for direct water cooling and a battery module for direct water cooling including the same.
- the present invention relates to a sacrificial metal having a greater ionization tendency of the metal than the case of the battery cell.
- the present invention relates to a direct water-cooled battery cell that can improve the corrosion resistance of a battery cell, and a direct water-cooled battery module including the same.
- Batteries used in eco-friendly vehicles require high output and therefore generate a large amount of heat. In order to improve battery performance and lifespan, it is very important to prevent the battery from overheating by efficiently discharging heat generated from the battery.
- a direct air cooling method As a cooling system for discharging heat from a battery, a direct air cooling method, an indirect water cooling method, or a direct water cooling method are known.
- Direct water cooling is a method in which battery cells are directly impregnated with coolant, and the heat from the battery cells is discharged directly into the coolant.
- Figure 1 is a schematic configuration diagram of a conventional battery module 10.
- a direct water-cooled battery module 10 is composed of a self-frame 11 and a plurality of battery cells 12.
- a plurality of battery cells 12 are arranged to be spaced apart from each other in the self-frame 11.
- the self-frame 11 is provided so that coolant can flow.
- the battery cell 12 has an external case containing the internal electrodes made of nickel-plated iron. Accordingly, when the battery cell 12 is directly impregnated with coolant, it is vulnerable to corrosion due to the characteristics of the material of the external case. Additionally, there is a problem in that the external case is polarized and has poor electrical insulation.
- insulating oil or special coolant (eg, NOVEC from 3M) is used to prevent corrosion of the battery cell 12.
- insulating oil has the problem of being vulnerable to fire, and special coolants such as 3M's NOVEC are excellent as coolants for battery cells in that they are non-polar and corrosion-resistant, but they are expensive and have the problem of increasing the manufacturing cost of battery modules. .
- the battery cell 12 is protected by using a non-woven fabric, etc. to maintain the rust preventive liquid. A post-processing process to cover the external case is required.
- the purpose of the present invention is to provide a battery cell for direct water cooling that can improve the corrosion resistance of the battery cell by using a sacrificial metal whose metal ionization tendency is greater than that of the battery cell case, and a battery module for direct water cooling including the same. Do it as
- a battery cell for direct water cooling includes an electrode assembly, a case for accommodating the electrode assembly, a first plating layer formed on the outer surface of the case, a scratch portion formed by removing a partial area of the first plating layer, and the scratch. It is provided to surround the portion, and includes a sacrificial metal portion formed of a material with a greater ionization tendency of metal than the first plating layer.
- the scratch portion may be formed by removing a partial area of the first plating layer along the thickness direction of the first plating layer.
- the scratch portion may be formed along the thickness direction of the first plating layer to a partial area of the first plating layer and to the outer peripheral surface of the case facing the partial area.
- the sacrificial metal portion may be coupled to the outer peripheral surface of the case.
- the sacrificial metal portion may be bonded to the outer peripheral surface of the case using a laser brazing method. Specifically, the sacrificial metal portion may be bonded to the outer peripheral surface of the case by melting an area that has passed through a portion of the first plating layer by a laser beam. .
- the sacrificial metal portion may include one or more selected from the group consisting of aluminum, magnesium, zinc, aluminum alloy, magnesium alloy, and zinc alloy.
- the scratch portion may be provided in a band shape along the circumferential direction of the case.
- the scratch part may include a first scratch part located at the upper end of the case and a second scratch part located at the lower end of the case.
- the sacrificial metal portion may surround the first and second scratch portions so that the first and second scratch portions are not exposed to the outside.
- the sacrificial metal portion may be coupled to the first and second scratch portions, respectively.
- the sacrificial metal portion may be melted by a laser beam and combined with the first and second scratch portions, respectively.
- the first plating layer may include a nickel plating layer.
- the scratch portion may be formed when a partial area of the first plating layer is peeled off by a laser or when a partial area of the first plating layer is peeled off through an etching process.
- the battery cell includes a polymer film and may include a cell sheet provided to surround the sacrificial metal portion.
- the cell sheet may surround the outer surface of the case so that one end of the cell sheet overlaps the other end of the cell sheet along the circumferential direction of the case.
- the battery module related to an embodiment of the present invention has a plurality of battery cells, the plurality of battery cells are arranged to be spaced apart, and coolant is supplied to the self-frame and the interior of the self-frame provided to allow coolant to flow between the plurality of battery cells. It includes a cooling water supply unit for.
- the battery module is provided inside the self-frame and includes a waterproof layer provided to cover an upper side end and a lower side end of the case, respectively, and the waterproof layer may include a waterproof adhesive or potting resin. You can.
- the coolant supply unit may be provided to supply coolant that is not insulated.
- the direct water-cooling battery cell and the direct water-cooling battery module including the same related to at least one embodiment of the present invention have the following effects.
- the corrosion resistance of the battery cell can be improved by using a sacrificial metal whose metal ionization tendency is greater than that of the battery cell case and the first plating layer.
- the heat of the battery cell can be cooled using low-cost general vehicle coolant that is not insulated.
- the heat resistance, waterproofing, and insulation of the battery cell can be improved through the cell sheet surrounding the sacrificial metal portion.
- 1 is a schematic configuration diagram of a conventional battery module.
- FIG. 2 is a schematic diagram showing a battery module for direct water cooling according to an embodiment of the present invention.
- 3 and 4 are front views showing the scratch portion of a battery cell according to an embodiment of the present invention.
- Figure 5 is a diagram for explaining a method of combining the scratch portion and the sacrificial metal portion.
- Figure 6 is a perspective view schematically showing a battery cell in a state in which a sacrificial metal portion is coupled to a first plating layer.
- Figure 7 is a perspective view schematically showing battery cells arranged in a battery module.
- Figures 8 and 9 are cross-sectional views schematically showing a state taken along line X-X in Figure 7.
- a direct water cooling battery cell hereinafter also referred to as a 'battery cell'
- a direct water cooling battery module hereinafter referred to as a 'battery module'
- FIG. 2 is a schematic diagram showing a battery module 100 for direct water cooling according to an embodiment of the present invention
- FIGS. 3 and 4 are front views showing a scratch portion of the battery cell 120 according to an embodiment of the present invention.
- the battery module 100 includes a plurality of battery cells 120, a cell frame 110 accommodating the plurality of battery cells, and a coolant supply unit 150.
- the battery module 100 includes a plurality of battery cells 120, a plurality of battery cells 120 are arranged to be spaced apart, and a self-frame ( 110) and a coolant supply unit 150 for supplying coolant into the self-frame 110.
- the self-frame 110 has a predetermined space 111 therein, and is provided in a structure in which the coolant (W) can flow within the space 111.
- the coolant (W) may be supplied to the internal space 111 of the cell frame 110 and then discharged to the outside of the self-frame 110.
- the battery module 100 may include a coolant discharge unit for discharging the coolant W to the outside of the cell frame 110.
- the cooling water supply unit 150 may include a cooling water reservoir and a pump. Additionally, the coolant supply unit 150 may be provided to supply coolant W that is not insulated.
- the general coolant (W) may be a coolant commonly used in vehicles.
- Figure 5 is a diagram for explaining a method of combining the scratch part and the sacrificial metal part.
- Figure 6 is a perspective view schematically showing a battery cell with a sacrificial metal portion coupled to the first plating layer
- Figure 7 is a perspective view schematically showing a battery cell disposed in a battery module
- Figures 8 and 9 are those of Figure 7. These are cross-sectional views schematically showing the state cut along line X-X.
- the battery cell 120 includes an electrode assembly 121, a case 122, a first plating layer 123, a scratch portion 124, and a sacrificial metal portion 125. Additionally, the battery cell 120 includes a polymer film and may include a cell sheet 126 provided to surround the sacrificial metal portion 125.
- the battery cell 120 includes an electrode assembly 121, a case 122 for accommodating the electrode assembly 121, a first plating layer 123 formed on the outer peripheral surface of the case 122, and a first plating layer 123.
- Scratch portions 124 (124a, 124b) formed by removing a partial area, and a sacrificial metal portion 125 provided to surround the scratch portion 124 and formed of a material with a greater ionization tendency of the metal than the first plating layer 123. ) includes.
- the sacrificial metal portion 125 may be plated on the first plating layer 123 or welded on the first plating layer 123.
- the battery cell 120 for direct water cooling when the battery cell 120 for direct water cooling is impregnated with coolant (W), the battery cell 120 for direct water cooling undergoes a metal ionization reaction between the case 122 and the sacrificial metal portion 125. Due to the difference, moisture (H) in the coolant (W) undergoes an ionization reaction with the sacrificial metal portion 212, and as a result, the metal ionization reaction of the case 122 is suppressed to prevent corrosion of the case 122. there is.
- the electrode assembly 121 is stored in the case 122 and includes an anode, a cathode, and a separator disposed between the anode and the cathode.
- the electrode and the separator may form an integrated electrode assembly 121.
- the electrode assembly 121 is a jelly-roll type electrode assembly in which a sheet-shaped anode and a cathode are wound with a separator interposed therebetween, and a plurality of anodes and cathodes are sequentially stacked with a separator interposed between them.
- It may be a stacked electrode assembly or a stacked/folded electrode assembly in which unit cells, in which a predetermined unit of anode and cathode are stacked with a separator interposed, are sequentially wound while positioned on a separator film.
- the case 122 accommodates the electrode assembly 121 and serves to protect the battery cell 120 from external shock.
- the case 122 may be cylindrical, pouch-shaped, or prismatic.
- the case 122 may be cylindrical.
- the electrode assembly 121 may be a rolled jelly-roll type electrode assembly
- the case 122 may be a cylindrical case
- the battery cell 120 for direct water cooling may be a cylindrical battery cell.
- case 122 may be made of a metal material, and the case 122 may be made of one or more materials selected from the group consisting of steel or stainless steel.
- the surface of the case 122 may be nickel (Ni) plated. That is, the first plating layer 123 may include a nickel plating layer.
- the nickel plating layer has less discoloration, excellent rust prevention, and excellent corrosion resistance and wear resistance.
- the nickel plating layer may corrode when immersed in coolant, and as corrosion progresses, polarity develops and insulation properties deteriorate.
- the first plating layer 123 may be a factor that hinders the movement of electrons between the sacrificial metal portion 125 and the case 122. .
- the scratch portion 124 (124a) may be formed by removing a partial area of the first plating layer 123 along the thickness direction (t) of the first plating layer 123. That is, the scratch portion can be formed by scraping the first plating layer 123 to a predetermined thickness, and the area where the scratch portion 124 is formed on the first plating layer 123 has a thickness of the first plating layer that is smaller than the surrounding area. .
- the scratch portion 124 may be formed when a partial region of the first plating layer 123 is peeled off by a laser or when a partial region of the first plating layer 123 is peeled off through etching. That is, the scratch portion 124 may be formed by scratching the first plating layer 123 with a laser, and the scratch portion 124 may be formed by etching the first plating layer 123.
- the etching treatment method is a chemical corrosion method.
- the scratch portion (124: 124c) is a partial area of the first plating layer 123 along the thickness direction (t) of the first plating layer 123 and a portion of the case facing the partial area. It can be formed up to the outer circumference. That is, the first plating layer 123 is scratched, the first plating layer 123 is penetrated along the thickness direction (t), and then the exposed outer peripheral surface 122c of the case is scratched, thereby creating a scratch portion 124c. can be formed.
- the sacrificial metal portion 125 may be coupled to the outer peripheral surface 122c of the case 122. In this structure, the sacrificial metal portion 125 can penetrate the first plating layer 123 and be directly coupled to the outer peripheral surface 122c of the case 122.
- a plurality of depressions may be formed in the scratched area.
- the depressions may be provided in a grid shape.
- the scratch portion 124 may be provided in a band shape along the circumferential direction of the case 122.
- a plurality of scratch portions 124 may be provided in different areas of the first plating layer 123.
- the scratch part 124 may include a first scratch part 124a located at the upper end 122a of the case 122 and a second scratch part 124b located at the lower end 122b of the case 122. You can.
- the sacrificial metal portion 125 is disposed to surround the outer surface of the case 122 and may be disposed on the first plating layer 123 to surround the first plating layer 123 .
- the sacrificial metal portion 125 may be formed of a material that has a greater metal ionization reaction than the case 122.
- the sacrificial metal portion 125 may include one or more selected from the group consisting of aluminum, magnesium, zinc, aluminum alloy, magnesium alloy, and zinc alloy.
- the sacrificial metal portion 125 is provided to surround the scratch portion 124 so that the scratch portion 124 is not exposed to the outside.
- the sacrificial metal portion 125 may be provided to surround the first and second scratch portions 124a and 124b so that the first and second scratch portions 124a and 124b are not exposed to the outside.
- the scratch portions 124 may include an area where a portion of the thickness of the first plating layer 123 has been scratched and an area where the scratch has penetrated the first plating layer 123 to the outer peripheral surface of the case. .
- the sacrificial metal portion 125 may be coupled to the scratch portion 124, and when a plurality of scratch portions are provided, the sacrificial metal portion 125 may be coupled to the first and second scratch portions 124a and 124b, respectively. It can be.
- first and second scratch portions 124a and 124b may each be provided in a band shape along the circumferential direction of the case 122.
- the sacrificial metal portion 125 may be provided in a band shape along the circumferential direction of the case 122.
- the upper end of the sacrificial metal portion 125 may cover the first scratch portion 124a, and the lower end of the sacrificial metal portion 125 may cover the second scratch portion 124b. .
- the sacrificial metal portion 125 covers the scratch portion 124 and may be provided in the form of a band coupled to the first plating layer 123 (121) along the circumference of the case 122.
- the sacrificial metal portion 125 may be joined to the scratch portion along virtual bonding lines L1 and L2 extending along the circumferential direction of the case 121 using a laser brazing method.
- FIG. 5 is a diagram illustrating a process in which a sacrificial metal portion is coupled to the outer circumferential surface of the case 122 (see FIG. 9 ) in an embodiment in which the scratch portion passes through the first plating layer and is formed to the outer circumferential surface of the case.
- the sacrificial metal portion 125 may be coupled to the outer peripheral surface of the case 122 while the wire W is melted by the laser beam B.
- the upper end of the sacrificial metal portion 125 is coupled to the first scratch portion 124a while the wire W is melted by a laser beam along the first bonding line L1.
- the first bonding line L1 refers to a virtual line where the wire W is bonded at the first scratch portion 124a.
- the lower end of the sacrificial metal portion 125 may be coupled to the second scratch portion 124b along the second bonding line L2 while the wire W is melted by the laser beam.
- the second bonding line L2 refers to a virtual line where the wire W is bonded at the second scratch portion 124b.
- the sacrificial metal portion 125 may be provided to integrally surround the upper and lower portions of the case 122, and the sacrificial metal portion 125 may be provided to surround the upper and lower portions 122a and 122b of the case 122. Each may be provided.
- the sacrificial metal portion 125 may be provided in a band shape to surround a partial area of the case 122 in the circumferential direction. Additionally, the sacrificial metal portion 125 may surround the case 122 along the circumferential direction of the case 122 in a ring shape.
- the battery cell 120 includes a polymer film and may include a cell sheet 126 provided to surround the sacrificial metal portion 125.
- the cell sheet 126 may surround the outer surface of the case 122 so that one end of the cell sheet 126 and the other end of the cell sheet 126 overlap along the circumferential direction of the case 122 .
- the cell sheet 126 may be heat-shrinked and come into close contact with the sacrificial metal portion 125.
- the cell sheet 126 may be formed of a heat-shrinkable polymer material.
- the heat-shrinkable polymer material may include one or more selected from the group consisting of polyvinyl chloride (PVC), polypropylene (PP), and polyethylene terephthalate (PET).
- the battery module 100 is provided inside the self-frame 110, and has waterproof layers 130 and 140 provided to cover the upper part 122a and the lower part 122b of the case 122 of the battery cell 120, respectively. may include.
- the waterproof layers 130 and 140 prevent moisture from permeating into the case 122 and perform the function of fixing the battery cell 120 to the cell frame 110.
- An upper waterproof layer 130 may be provided at the upper end 122a of the case 122, and a lower waterproof layer 140 may be provided at the lower end 122b of the case 122.
- the waterproof layers 130 and 140 may be provided to surround a partial area of the sacrificial metal portion 125.
- the battery cell 120 may be fixed to the inner surface of the cell frame 110 through waterproof layers 130 and 140, respectively, at the upper end 122a and lower end 122b.
- the waterproof layers 130 and 140 may include a waterproof adhesive or potting resin, and the potting resin may be any one of silicone-based resin, urethane-based resin, or epoxy-based resin.
- a sacrificial metal having a greater ionization tendency of the metal than the case and first plating layer of the battery cell is used to cool the battery cell. Corrosion resistance can be improved.
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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)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims (15)
- 전극 조립체;전극 조립체를 수용하는 케이스;상기 케이스의 외면에 형성된 제1 도금층;제1 도금층의 일부영역이 제거되어 형성된 스크래치부; 및상기 스크래치부를 둘러싸도록 마련되며, 상기 제1 도금층보다 금속의 이온화 경향이 큰 재질로 형성된 희생 금속부를 포함하는 배터리셀.
- 제 1 항에 있어서,상기 스크래치부는 제1 도금층의 두께방향을 따라 제1 도금층의 일부영역이 제거된 배터리 셀.
- 제 2 항에 있어서,상기 스크래치부는 제1 도금층의 두께방향을 따라 제1 도금층의 일부영역 및 상기 일부영역과 마주하는 케이스의 외주면까지 형성된 배터리 셀.
- 제 3 항에 있어서,희생금속부는 케이스의 외주면에 결합된 배터리 셀.
- 제 1 항에 있어서,상기 희생 금속부는 알루미늄, 마그네슘, 아연, 알루미늄 합금, 마그네슘 합금, 및 아연 합금으로 이루어진 그룹으로부터 선택된 하나 이상을 포함하는 배터리셀.
- 제 1 항에 있어서,상기 스크래치부는 상기 케이스의 둘레방향을 따라 밴드 형상으로 마련된 배터리 셀.
- 제 1 항에 있어서,상기 스크래치부는 케이스의 상단부에 위치한 제1 스크래치부 및 케이스의 하단부에 위치한 제2 스크래치부를 포함하며,희생금속부는 제1 및 제2 스크래치부가 외부로 노출되지 않도록 제1 및 제2 스크래치부를 둘러싸는 배터리 셀.
- 제 7 항에 있어서,희생금속부는 제1 및 제2 스크래치부에 각각 결합된 배터리 셀.
- 제 1 항에 있어서,제1 도금층은 니켈 도금층을 포함하는 배터리 셀.
- 제 1 항에 있어서,스크래치부는 레이저에 의해 제1 도금층의 일부영역이 벗겨지거나, 에칭 처리되어 제1 도금층의 일부영역이 벗겨진 배터리 셀.
- 제 1 항에 있어서,고분자 필름을 포함하며, 상기 희생금속부를 둘러싸도록 마련된 셀 시트를 포함하는 배터리 셀.
- 제 11항에 있어서,상기 샐 시트는 케이스의 둘레방향을 따라 셀 시트의 일단과 셀 시트의 타단이 오버랩되도록 상기 케이스의 외면을 둘러싸는 배터리셀.
- 제 1 항에 따른 복수 개의 배터리셀;복수 개의 배터리셀이 이격되어 배치되며, 복수 개의 배터리셀 사이로 냉각수로 유동 가능하게 마련된 셀프레임; 및셀프레임 내부로 냉각수를 공급하기 위한 냉각수 공급부를 포함하는 배터리 모듈.
- 제 13 항에 있어서,셀프레임 내부에 마련되며, 상기 케이스의 상부면 측 단부 및 하부면 측 단부를 각각 덮도록 마련된 방수층을 포함하며,상기 방수층은 방수 접착제 또는 포팅 레진(potting resin)을 포함하는 배터리 모듈.
- 제 13 항에 있어서,상기 냉각수 공급부는 절연 처리되지 않은 냉각수를 공급하도록 마련된 배터리 모듈.
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CN202380014113.4A CN118140346A (zh) | 2022-04-01 | 2023-03-31 | 电池电芯及包括该电池电芯的电池模块 |
EP23781431.4A EP4395022A1 (en) | 2022-04-01 | 2023-03-31 | Battery cell and battery module comprising same |
JP2024518901A JP2024533734A (ja) | 2022-04-01 | 2023-03-31 | バッテリーセルおよびこれを含むバッテリーモジュール |
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JP (1) | JP2024533734A (ko) |
KR (1) | KR20230142373A (ko) |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR920004316A (ko) * | 1990-08-31 | 1992-03-27 | 정용문 | 광자기 디스크 |
KR20130004141A (ko) * | 2011-06-30 | 2013-01-09 | 산요덴키가부시키가이샤 | 전원 장치 및 전원 장치를 구비하는 차량 |
JP2014103026A (ja) * | 2012-11-21 | 2014-06-05 | Hitachi Vehicle Energy Ltd | 蓄電素子 |
KR20150006103A (ko) * | 2013-07-05 | 2015-01-16 | 현대모비스 주식회사 | 직접 수냉 방식을 활용한 이차전지 모듈 및 이의 냉각방법 |
CN104756285A (zh) * | 2012-11-16 | 2015-07-01 | 日立汽车系统株式会社 | 单体电池以及电池组 |
KR20220041076A (ko) | 2019-07-29 | 2022-03-31 | 도레이 카부시키가이샤 | 가스 확산 전극 및 그 제조 방법, 그리고 막전극 접합체 |
-
2023
- 2023-03-31 WO PCT/KR2023/004356 patent/WO2023191582A1/ko active Application Filing
- 2023-03-31 EP EP23781431.4A patent/EP4395022A1/en active Pending
- 2023-03-31 KR KR1020230042868A patent/KR20230142373A/ko unknown
- 2023-03-31 CN CN202380014113.4A patent/CN118140346A/zh active Pending
- 2023-03-31 JP JP2024518901A patent/JP2024533734A/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR920004316A (ko) * | 1990-08-31 | 1992-03-27 | 정용문 | 광자기 디스크 |
KR20130004141A (ko) * | 2011-06-30 | 2013-01-09 | 산요덴키가부시키가이샤 | 전원 장치 및 전원 장치를 구비하는 차량 |
CN104756285A (zh) * | 2012-11-16 | 2015-07-01 | 日立汽车系统株式会社 | 单体电池以及电池组 |
JP2014103026A (ja) * | 2012-11-21 | 2014-06-05 | Hitachi Vehicle Energy Ltd | 蓄電素子 |
KR20150006103A (ko) * | 2013-07-05 | 2015-01-16 | 현대모비스 주식회사 | 직접 수냉 방식을 활용한 이차전지 모듈 및 이의 냉각방법 |
KR20220041076A (ko) | 2019-07-29 | 2022-03-31 | 도레이 카부시키가이샤 | 가스 확산 전극 및 그 제조 방법, 그리고 막전극 접합체 |
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KR20230142373A (ko) | 2023-10-11 |
JP2024533734A (ja) | 2024-09-12 |
CN118140346A (zh) | 2024-06-04 |
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