WO2023239306A4 - Intumescent sheet used in an electric vehicle battery for thermal runaway management - Google Patents
Intumescent sheet used in an electric vehicle battery for thermal runaway management Download PDFInfo
- Publication number
- WO2023239306A4 WO2023239306A4 PCT/SG2023/050409 SG2023050409W WO2023239306A4 WO 2023239306 A4 WO2023239306 A4 WO 2023239306A4 SG 2023050409 W SG2023050409 W SG 2023050409W WO 2023239306 A4 WO2023239306 A4 WO 2023239306A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- intumescent sheet
- alkali
- sheet
- fiber mat
- intumescent
- Prior art date
Links
- 239000000835 fiber Substances 0.000 claims abstract 22
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims abstract 21
- 239000000654 additive Substances 0.000 claims abstract 11
- 230000000996 additive effect Effects 0.000 claims abstract 11
- 239000011230 binding agent Substances 0.000 claims abstract 9
- 238000005470 impregnation Methods 0.000 claims abstract 2
- 239000000919 ceramic Substances 0.000 claims 7
- 239000000203 mixture Substances 0.000 claims 7
- 238000000034 method Methods 0.000 claims 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 5
- 239000003795 chemical substances by application Substances 0.000 claims 5
- 239000004964 aerogel Substances 0.000 claims 4
- 229910052751 metal Inorganic materials 0.000 claims 4
- 239000002184 metal Substances 0.000 claims 4
- 239000004094 surface-active agent Substances 0.000 claims 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 3
- 230000005661 hydrophobic surface Effects 0.000 claims 3
- 229910000000 metal hydroxide Inorganic materials 0.000 claims 3
- 229910044991 metal oxide Inorganic materials 0.000 claims 3
- 150000004706 metal oxides Chemical class 0.000 claims 3
- 239000002245 particle Substances 0.000 claims 3
- 239000000843 powder Substances 0.000 claims 3
- 125000006850 spacer group Chemical group 0.000 claims 3
- 239000004925 Acrylic resin Substances 0.000 claims 2
- 229920000178 Acrylic resin Polymers 0.000 claims 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims 2
- 239000010419 fine particle Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 238000002156 mixing Methods 0.000 claims 2
- 239000003605 opacifier Substances 0.000 claims 2
- 239000006259 organic additive Substances 0.000 claims 2
- 239000000377 silicon dioxide Substances 0.000 claims 2
- 235000012239 silicon dioxide Nutrition 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 claims 1
- 239000004372 Polyvinyl alcohol Substances 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 claims 1
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910000019 calcium carbonate Inorganic materials 0.000 claims 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims 1
- 239000000292 calcium oxide Substances 0.000 claims 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 229910021485 fumed silica Inorganic materials 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims 1
- 239000000395 magnesium oxide Substances 0.000 claims 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 150000004692 metal hydroxides Chemical class 0.000 claims 1
- 229910052914 metal silicate Inorganic materials 0.000 claims 1
- 239000010445 mica Substances 0.000 claims 1
- 229910052618 mica group Inorganic materials 0.000 claims 1
- 229920002451 polyvinyl alcohol Polymers 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims 1
- 229910010271 silicon carbide Inorganic materials 0.000 claims 1
- -1 sodium fluorosilicate Chemical compound 0.000 claims 1
- 239000000454 talc Substances 0.000 claims 1
- 229910052623 talc Inorganic materials 0.000 claims 1
- 238000010345 tape casting Methods 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 239000011667 zinc carbonate Substances 0.000 claims 1
- 229910000010 zinc carbonate Inorganic materials 0.000 claims 1
- 235000004416 zinc carbonate Nutrition 0.000 claims 1
- 239000011787 zinc oxide Substances 0.000 claims 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
- C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
- C09D5/185—Intumescent paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- 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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/065—Physical fire-barriers having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Laminated Bodies (AREA)
- Cell Separators (AREA)
Abstract
An intumescent sheet to be used in an Electric Vehicle Battery for thermal runaway management, wherein out of 100 weight percentage (wt%) of the intumescent sheet, the intumescent sheet comprises: 5 to 20 wt% of non-woven fiber mat; 60 to 95 wt% of an alkali- silicate based binder; and 0.5 to 10 wt% of microporous and/or mesoporous and/or nanoporous additive, wherein the non-woven fiber mat is infused with the alkali-silicate based binder by impregnation of the non-woven fiber mat with an alkali-silicate based solution.
Claims
1. An intumescent sheet to be used in an Electric Vehicle (EV) Battery for thermal runaway management, wherein the intumescent sheet comprises: a non-woven fiber mat;
60 to 95 wt% of an alkali-silicate based binder; and microporous and/or mesoporous and/or nanoporous additive, wherein the non-woven fiber mat is infused with the alkali-silicate based binder by impregnation of the non-woven fiber mat with an alkali-silicate based solution.
2. The intumescent sheet of claim 1 , wherein the intumescent sheet has a thickness of lesser than or equal to 1 mm.
3. The intumescent sheet of claim 1 or 2, wherein the alkali-silicate based binder has a silicon dioxide : alkali oxide molar ratio in the range of 2.5 to 4.
4. The intumescent sheet of claim 1 , 2 or 3, wherein the alkali-silicate based binder has a silicon dioxide : alkali oxide molar ratio in the range of 3 to 3.3.
5. The intumescent sheet of any one of the preceding claims, wherein the intumescent sheet comprises 75 to 85 wt% of the alkali-silicate based binder.
6. The intumescent sheet of any one of the preceding claims, wherein the microporous and/or mesoporous and/or nanoporous additive comprises aerogel particles with hydrophobic surface groups.
7. The intumescent sheet of claim 6, wherein the aerogel particles have particle sizes of 10-60 pm, pore diameters of 20 to 100 nm, porosity of greater than 90 %, bulk density of 0.02 to 0.1 g/cm3 and surface area of 500 to 900 m2/g.
8. The intumescent sheet of any one of the preceding claims, wherein the microporous and/or mesoporous and/or nanoporous additive comprises hollow microglass spheres, fumed silica, and/or cenospheres.
31
AMENDED SHEET (ARTICLE 19)
9. The intumescent sheet of any one of the preceding claims, wherein the intumescent sheet comprises 1 to 10 wt% of an opacifier comprising any one or combination of iron oxide, silicon carbide, and titania.
10. The intumescent sheet of any one of the preceding claims, wherein the intumescent sheet comprises char strength-imparting ceramic additive comprising any one or combination of metal oxide, metal hydroxide, metal carbonate, metal silicate and metal powder.
11 . The intumescent sheet of claim 10, wherein the intumescent sheet comprises 3 to 8 wt% of the char strength-imparting ceramic additive.
12. The intumescent sheet of claim 10 or 1 1 , wherein the char strength-imparting ceramic additive comprises any one or combination of magnesium oxide, aluminium oxide, calcium oxide, and zinc oxide.
13. The intumescent sheet of any one of claims 10 to 12, wherein the char strengthimparting ceramic additive comprises aluminium trihydrate and/or magnesium dihydroxide.
14. The intumescent sheet of any one of claims 10 to 13, wherein the char strengthimparting ceramic additive comprises calcium carbonate and/or zinc carbonate.
15. The intumescent sheet of any one of claims 10 to 14, wherein the char strengthimparting ceramic additive comprises mica and/or talc.
16. The intumescent sheet of any one of claims 10 to 15, wherein the char strengthimparting ceramic additive comprises the metal powder, and the metal powder comprises iron, zinc and/or aluminium.
17. The intumescent sheet of any one of the preceding claims, wherein the alkali-silicate based solution comprises a surfactant that is stable in the range of pH 2 to 12.
18. The intumescent sheet of claim 17, wherein the alkali-silicate based solution comprises 0.2 to 0.5 wt% of the surfactant.
32
AMENDED SHEET (ARTICLE 19)
19. The intumescent sheet of any one of the preceding claims, wherein the intumescent sheet comprises a hardening agent, which comprises sodium fluorosilicate and/or potassium dimethyl siliconate.
20. The intumescent sheet of any one of the preceding claims, wherein the intumescent sheet comprises an organic additive, which comprises polyvinyl alcohol and/or glycerol.
21 . The intumescent sheet of any one of the preceding claims, wherein the non-woven fiber mat comprises glass fibers of E and/or S type.
22. The intumescent sheet of any one of the preceding claims, wherein the non-woven fiber mat comprises fibers with diameter and length of between 8 to 18 pm and 10 to 75 mm respectively
23. The intumescent sheet of claim 22, wherein the non-woven fiber mat comprises fibers with diameter and length of between 10 to 15 pm and 15 to 60 mm respectively.
24. The intumescent sheet of any one of the preceding claims, wherein the non-woven fiber mat comprises 5 to 20 wt% of acrylic resin as a binder.
25. The intumescent sheet of claim 24, wherein the non-woven fiber mat comprises 8 to 15 wt% of the acrylic resin.
26. The intumescent sheet of any one of the preceding claims, wherein the non-woven fiber mat has an area density below 400 g/m2.
27. The intumescent sheet of any one of the preceding claims, wherein the non-woven fiber mat has an area density of between 30 to 280 g/m2.
28. The intumescent sheet of any one of the preceding claims, wherein the intumescent sheet comprises 8 to 16 wt% of the non-woven fiber mat.
29. The intumescent sheet of any one of the preceding claims, wherein the intumescent sheet is made 2 to 3 cm larger around all sides of a cell of the EV battery.
33
AMENDED SHEET (ARTICLE 19)
30. The intumescent sheet of any one of the preceding claims, wherein the intumescent sheet comprises:
8 to 16 wt% of non-woven fiber mat;
75 to 85 wt% of an alkali-silicate based binder;
1 to 5 wt% of aerogel fine particles with hydrophobic surface groups; and
3 to 8 wt% of metal oxide and/or hydroxide.
31 . The intumescent sheet of any one of the preceding claims, wherein the alkali-silicate based solution comprises:
92 to 97 wt% of an alkali-silicate and water; a surfactant; aerogel fine particles with hydrophobic surface groups; and a metal oxide and/or hydroxide.
32. The intumescent sheet of any one of claims 1 to 30, wherein the alkali-silicate based solution further comprises: an opacifier; an organic additive; and a hardening agent.
33. A method of manufacturing the intumescent sheet of any one of the preceding claims, wherein the method comprises: impregnating the non-woven fiber mat with the alkali-silicate based solution by coating the non-woven fiber mat with the alkali-silicate based solution using doctor-blading technique; and drying the impregnated non-woven fiber mat.
34. The method of claim 33, wherein the method comprises: making the alkali-silicate based solution by: i) addition of alkali-silicate in the form of a solution; j) addition of one or more surfactants to the solution of step a) to form a mixture; k) addition of thermal insulation imparting agents to the mixture; l) addition of char strength-imparting agents to the mixture; m) addition of water to the mixture; n) addition of a hardening agent to the mixture;
34
AMENDED SHEET (ARTICLE 19)
o) stir-mixing the mixture after each of steps a) to f) for a predetermined time duration of iess than 30 minutes; and p) stir-mixing for 2 to 3 hours after all components have been added to the mixture.
35. A laminate including a plurality of stacked layers, wherein each layer is the intumescent sheet of any one of claims 1 to 32.
36. A method for manufacturing the laminate of claim 35, wherein the method comprises: stacking layer-by-layer a plurality of the non-woven fiber mat and applying the alkalisilicate based solution in between the layers to impregnate each layer of the nonwoven fiber mat with the alkali-silicate based solution; and cold pressing the plurality of stacked layers to form the laminate.
37. The intumescent sheet of any one of claims 1 to 32, and the laminate of claim 35 or 36, wherein the intumescent sheet and/or the laminate comprises an adhesive backing to facilitate taping of the intumescent sheet and/or the laminate on a surface.
38. An Electric Vehicle (EV) Battery comprising one or more spacers located between cells in the EV battery to prevent thermal runaway in adjacent cells when one cell is undergoing thermal runaway, wherein the one or more spacers comprise the intumescent sheet of any one of claims 1 to 32 and/or the laminate of claim 35 or 36.
39. The EV Battery of claim 38, wherein the one or more spacers comprise a compressible material in contact with the intumescent sheet and/or the laminate.
40. The EV battery of claim 38 or 39, wherein the intumescent sheet and/or the laminate are linings in inner walls of a module formed by a plurality of the cells and/or linings in inner walls of a battery pack casing of the EV battery.
35
AMENDED SHEET (ARTICLE 19)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SG10202250123G | 2022-06-10 | ||
| SG10202250123G | 2022-06-10 | ||
| SG10202260465W | 2022-12-16 | ||
| SG10202260465W | 2022-12-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2023239306A1 WO2023239306A1 (en) | 2023-12-14 |
| WO2023239306A4 true WO2023239306A4 (en) | 2024-02-22 |
Family
ID=89119126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SG2023/050409 WO2023239306A1 (en) | 2022-06-10 | 2023-06-09 | Intumescent sheet used in an electric vehicle battery for thermal runaway management |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2023239306A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107078231A (en) * | 2014-05-21 | 2017-08-18 | 赛美西有限公司 | Passive isolated material |
| KR20220124703A (en) * | 2020-01-07 | 2022-09-14 | 아스펜 에어로겔, 인코포레이티드 | Lack of battery thermal management |
| US20230275289A1 (en) * | 2020-07-30 | 2023-08-31 | 3M Innovative Properties Company | Battery cell thermal runaway barrier |
| JP2022125585A (en) * | 2021-02-17 | 2022-08-29 | 住友理工株式会社 | Heat insulation material |
-
2023
- 2023-06-09 WO PCT/SG2023/050409 patent/WO2023239306A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023239306A1 (en) | 2023-12-14 |
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