CN212789495U - Fire prevention cover is used to electric automobile battery package - Google Patents
Fire prevention cover is used to electric automobile battery package Download PDFInfo
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- CN212789495U CN212789495U CN202021949376.4U CN202021949376U CN212789495U CN 212789495 U CN212789495 U CN 212789495U CN 202021949376 U CN202021949376 U CN 202021949376U CN 212789495 U CN212789495 U CN 212789495U
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- basic unit
- cover
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- 230000002265 prevention Effects 0.000 title claims abstract description 10
- 239000010410 layer Substances 0.000 claims abstract description 71
- 239000011241 protective layer Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 239000003063 flame retardant Substances 0.000 claims abstract description 15
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 230000001681 protective effect Effects 0.000 claims description 12
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 10
- 229910052618 mica group Inorganic materials 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 6
- 239000010445 mica Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical class [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 230000009970 fire resistant effect Effects 0.000 claims 3
- 239000003292 glue Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 238000001721 transfer moulding Methods 0.000 abstract description 2
- 239000000084 colloidal system Substances 0.000 description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000005007 epoxy-phenolic resin Substances 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 229920006305 unsaturated polyester Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000012720 thermal barrier coating Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
-
- 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
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a fire prevention cover is used to electric automobile battery package, it includes basic unit, inflation layer and inoxidizing coating, the basic unit adopts fire-retardant material preparation to form, and the basic unit includes first basic unit and second basic unit, inflation layer and inoxidizing coating are arranged between first basic unit and second basic unit, the inflation layer is arranged between first basic unit and inoxidizing coating, the inoxidizing coating adopts the grid structure, and the strip entity of grid is located electric core explosion-proof valve top, and the open position of grid corresponds to the clearance position between two adjacent rows of electric core explosion-proof valves; the expansion layer is arranged at the position of the outer ring of the protective layer. The manufacturing method adopts a resin transfer molding method. The utility model discloses a fire prevention cover spare part structure and performance are more stable, can provide effective protection in the complete life cycle that whole battery package used.
Description
Technical Field
The utility model belongs to the technical field of electric automobile battery package protection, concretely relates to electric automobile battery is fire prevention cover for package and manufacturing method thereof.
Background
In the safety requirement of the power storage battery for the electric automobile, which is about to be issued by the national standard committee, the battery pack or the system is required to provide a thermal event alarm signal 5min before the thermal diffusion caused by the thermal runaway of a single battery and the danger of a passenger compartment. The thermal runaway of the power battery for the vehicle is provided for 5 minutes without releasing open fire outside the battery shell, and the conventional fireproof cover needs to be improved in order to meet the requirements of the safety requirement of the power storage battery for the electric vehicle.
In the prior art, a mica sheet is usually additionally arranged between a battery core (module) and a battery pack fireproof cover to prevent the damage of an upper cover of the battery pack caused by high-temperature gas and flame which are sprayed when the battery core is out of control due to heat, so that the flame sprayed by the battery core is leaked to the outside of the battery pack; and the explosion-proof valve is arranged on the sealed battery pack shell, and when a large amount of gas is sprayed by the battery cell, the gas is discharged from the explosion-proof valve. However, mica is poor in mechanical stability and easy to damage, so that the power battery pack cannot be guaranteed to keep stable in structure in the whole service life cycle, namely cracks and damage occur at the later stage of the service life cycle, so that the protection performance is reduced, and the national standard requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model provides an electric automobile is fire prevention cover for battery package and manufacturing method thereof to make fire prevention cover can keep structure and stable performance in the life cycle of whole battery package. The utility model aims at realizing through the following technical scheme:
the utility model provides an electric automobile battery is fire prevention cover for package, it includes basic unit and inoxidizing coating, the basic unit adopts fire-retardant material preparation to form, and the basic unit includes first basic unit and second basic unit, the inoxidizing coating is located between first basic unit and the second basic unit, the inoxidizing coating adopts the grid structure, and the strip entity of grid is located electric core explosion-proof valve top, and the open position of grid corresponds to the clearance position between the two adjacent rows of electric core explosion-proof valves.
Further, the openings in the grid structure of the protective layer are rectangular openings; the width of each single strip-shaped solid body of the grid is larger than the diameter of the battery cell explosion-proof valve covered by the grid.
Further, the base layer comprises a protective net or protective cloth which is woven by flame-retardant materials in a staggered manner; the protective layer is prepared by mica group minerals.
Further, the flame retardant material comprises silicon dioxide or carbon fiber, and preferably, the base layer is a protective cloth or a protective net formed by adopting a plurality of layers of composite combinations formed by different materials.
Further, the mica group mineral at least comprises aluminosilicate materials of any one of potassium, aluminum, magnesium, iron and lithium.
Further, still be equipped with the guard plate of mica material between second foundation layer and the battery module.
Further, the side, not connected with the protective layer, of the second base layer is coated with a heat insulation coating and/or a flame retardant coating.
Further, the fire-proof cover still includes the inflation layer, the inflation layer is arranged between first basic unit and inoxidizing coating, and the inflation layer is located the outer loop position of inoxidizing coating first bottom surface.
Further, the width of the expansion layer is not less than 5 mm.
Further, the base layer, the expansion layer and the protective layer are packaged into an integral assembly component through matrix colloid which comprises one or more materials of reinforced unsaturated polyester, epoxy resin and phenolic resin; preferably, the shield assembly component is manufactured by a Resin Transfer Molding (RTM) method.
Compared with the prior art, the utility model discloses a fire prevention cover's beneficial technological effect lies in:
(1) the structure and the performance of the parts are more stable, and effective protection can be provided in the whole life cycle of the use of the battery pack;
(2) the fire-proof cover of the technical scheme of the utility model has lighter weight, is beneficial to improving the energy density index of the power battery system and increasing the driving range of the vehicle;
(3) the technical scheme of the utility model after the life cycle that the spare part that adopts used at the battery package is ended, can recycle, and the recoverable reuse rate of spare part is high.
Drawings
Fig. 1 is a schematic sectional view of a fire-proof cover for an electric vehicle battery pack according to the present invention;
fig. 2 is a schematic layout view of the expansion layer and the protective layer according to the present invention.
Wherein:
1-a base layer; 12-a second base layer; and 3, a protective layer.
11-a first base layer; 2-an intumescent layer;
Detailed Description
The preferred embodiments of the present invention will be described with reference to the accompanying drawings.
The embodiment provides a fireproof cover for an electric vehicle battery pack, which comprises a base layer 1, an expansion layer 2 and a protective layer 3, wherein the fireproof cover is designed in a four-layer structure, the base layer 1 comprises a first base layer 11 and a second base layer 12, and the expansion layer 2 and the protective layer 3 are arranged between the first base layer 11 and the second base layer 12, wherein the expansion layer 2 is arranged between the first base layer 11 and the protective layer 3, as shown in fig. 1; the base layer 1, the expansion layer 2 and the protective layer 3 are encapsulated into an integral assembly component by matrix colloid which comprises one or more materials of reinforced unsaturated polyester, epoxy resin and phenolic resin.
Wherein:
base layer 1: in order to adopt the flame retardant material to adopt the staggered weaving as the protective cloth form, preferably, the base layer 1 takes the flame retardant protective material of silicon dioxide as the substrate, or the carbon fiber material, the multilayer composite combination;
expansion layer 2: is a thermal expansion layer, when the temperature exceeds 100 ℃, the material has expansion reaction;
and (3) protective layer: is mica group mineral, preferably aluminosilicate of metals such as potassium, aluminum, magnesium, iron, lithium, etc.;
in the illustrated embodiment, the protective layer 3 is of a grid structure, the strip-shaped solid bodies 32 of the grid are located right above the vertical direction of the cell explosion-proof valve, and the width of each single strip-shaped solid body 32 of the grid is greater than the diameter of the cell explosion-proof valve covered by the solid body; the opening 31 of the grid is of a rectangular structure and corresponds to the position of a gap between two adjacent rows of battery cell explosion-proof valves; the expansion layer 2 is arranged at the outer ring position of the grid framework of the protective layer 3, and is preferably of a closed ring structure, and the width of the expansion layer is not less than 5 mm, as shown in figure 2.
In a preferred embodiment, the base layer 1 comprises a protective cloth woven with a flame retardant material, and the protective layer 3 is made of a mineral of the mica group, in particular an aluminosilicate of a metal such as potassium, aluminum, magnesium, iron, lithium, etc. The flame-retardant material comprises silicon dioxide or carbon fiber material, and the protective cloth can also adopt different materials to form a multi-layer composite combined structure.
In other embodiments, a protective plate made of mica is further arranged between the second base layer and the battery module.
In other embodiments, the side of the second base layer not connected to the protective layer is coated with a thermal barrier coating and/or a flame retardant coating.
The protection principle of the protective cover for the vehicle battery pack of the embodiment is as follows:
the protective layer 3 is coated in the multilayer base layer 1 by the reinforced unsaturated polyester, epoxy resin and phenolic resin matrix colloid, so that the mica group mineral substance is protected, the structural stability and the performance stability of the protective layer 3 are kept in the complete life cycle of the battery pack, and the national standard requirement is continuously met in the complete life cycle of the battery pack;
when the electric core emits hot air flow and flame to impact the matrix colloid, the matrix colloid is melted; then, the hot air flow sprayed by the battery core and the flame impact the protective layer 3, the protective layer 3 conducts the heat of the hot air flow sprayed by the battery core and the flame to the matrix colloid around the protective layer 3, the melting of the colloid is accelerated, the base layer is separated from the matrix colloid, and the protective layer 3 adopts a grid structure, so that a gap can be formed between the multiple layers of base layers 1, the hot air flow and the flame are conducted to the explosion-proof valve of the battery pack in the base layers 1, and finally the hot air flow is discharged out of the battery pack shell;
because the base layer 1 has heat absorption and heat storage capacities, the temperature of flame sprayed by the battery cell is reduced when the flame passes through the net structure of the second base layer 12; meanwhile, the flame is blocked by the second base layer 12 of the net structure, so that the function of extinguishing fire is achieved.
The strip-shaped entity 32 of the protective layer 3 vertically arranged above the battery cell explosion-proof valve can prevent the battery cell from erupting hot air and flame from damaging the first base layer 11 right above the strip-shaped entity 32, and further prevent the battery cell erupting hot air and flame from damaging the upper cover of the battery pack shell sleeved above the fireproof cover;
meanwhile, when the expansion layer 2 is impacted by the hot airflow sprayed by the battery core and flame, the expansion layer expands, and the edge of the protective layer 3 is further warped towards the vertical direction, so that the hot airflow sprayed by the battery core and the flame propagation path can be changed, the sealing material denaturation damage caused by the fact that the hot airflow sprayed by the battery core and the flame impact the sealing material between the upper cover and the shell of the battery pack is avoided, and the flame can be effectively prevented from being propagated to the outside of the shell of the battery pack along the sealing surface.
Finally, it is noted that the above preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims; the dimensions shown in the figures and the embodiments are not related to specific physical objects, and are not used for limiting the protection scope of the present invention, and the physical dimensions can be selected and changed according to actual needs.
Claims (10)
1. The utility model provides an electric automobile battery is fire prevention cover for package, a serial communication port, including basal layer and inoxidizing coating, the basal layer adopts fire-retardant material preparation to form, and the basal layer includes first basal layer and second basal layer, the inoxidizing coating is located between first basal layer and the second basal layer, the inoxidizing coating adopts the grid structure, and the strip entity of grid is located electric core explosion-proof valve top, and the open position of grid corresponds to the clearance position between the two adjacent rows of electric core explosion-proof valves.
2. The fire-resistant cover for the battery pack of the electric vehicle as claimed in claim 1, wherein the opening in the grid structure of the protective layer is a rectangular opening; the width of each single strip-shaped solid body of the grid is larger than the diameter of the battery cell explosion-proof valve covered by the grid.
3. The fireproof cover for the battery pack of the electric vehicle as claimed in claim 1, wherein the base layer comprises a protective net or cloth woven with a flame retardant material; the protective layer is prepared by mica group minerals.
4. The fire-resistant cover for the battery pack of the electric vehicle as claimed in claim 3, wherein the fire-resistant material comprises silica or carbon fiber.
5. The fire-proof cover for the battery pack of the electric automobile according to claim 3, wherein the mica group minerals at least comprise aluminosilicate materials of any one of potassium, aluminum, magnesium, iron and lithium.
6. The fireproof cover for an electric vehicle battery pack according to any one of claims 1 to 5, wherein a protective plate made of mica is further provided between the second base layer and the battery module.
7. The fireproof cover for the battery pack of the electric vehicle as claimed in any one of claims 1 to 5, wherein a thermal insulation coating and/or a flame retardant coating is coated on the surface of the second base layer not connected with the protective layer.
8. The fireproof cover for the battery pack of the electric vehicle as claimed in any one of claims 1 to 5, further comprising an expansion layer, wherein the expansion layer is arranged between the first base layer and the protective layer, and the expansion layer is arranged at the position of the outer ring of the first bottom surface of the protective layer.
9. The fire-retardant cover for an electric vehicle battery pack according to claim 8, wherein the width of the expansion layer is not less than 5 mm.
10. The fire-retardant cover for an electric vehicle battery pack according to claim 8, wherein the base layer, the expansion layer and the protection layer are encapsulated by the matrix glue to form an integral assembly component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021949376.4U CN212789495U (en) | 2020-09-09 | 2020-09-09 | Fire prevention cover is used to electric automobile battery package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021949376.4U CN212789495U (en) | 2020-09-09 | 2020-09-09 | Fire prevention cover is used to electric automobile battery package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212789495U true CN212789495U (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021949376.4U Active CN212789495U (en) | 2020-09-09 | 2020-09-09 | Fire prevention cover is used to electric automobile battery package |
Country Status (1)
| Country | Link |
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| CN (1) | CN212789495U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659263A (en) * | 2021-07-13 | 2021-11-16 | 上海国玻汽车科技有限公司 | Thermal insulation fireproof cloth for power battery and preparation method |
| CN114159710A (en) * | 2020-09-09 | 2022-03-11 | 一汽-大众汽车有限公司 | Fireproof cover for battery pack of electric vehicle and manufacturing method of fireproof cover |
| US12159990B2 (en) | 2021-07-13 | 2024-12-03 | Shanghai Guobo New Energy Technology Co., Ltd. | Thermal insulation fireproof cloth for power batteries and preparation method thereof |
-
2020
- 2020-09-09 CN CN202021949376.4U patent/CN212789495U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114159710A (en) * | 2020-09-09 | 2022-03-11 | 一汽-大众汽车有限公司 | Fireproof cover for battery pack of electric vehicle and manufacturing method of fireproof cover |
| CN114159710B (en) * | 2020-09-09 | 2023-12-15 | 一汽-大众汽车有限公司 | Fireproof cover for battery pack of electric automobile and manufacturing method thereof |
| CN113659263A (en) * | 2021-07-13 | 2021-11-16 | 上海国玻汽车科技有限公司 | Thermal insulation fireproof cloth for power battery and preparation method |
| CN113659263B (en) * | 2021-07-13 | 2024-03-22 | 上海国玻新能源科技有限公司 | Thermal insulation fireproof cloth for power battery and preparation method |
| US12159990B2 (en) | 2021-07-13 | 2024-12-03 | Shanghai Guobo New Energy Technology Co., Ltd. | Thermal insulation fireproof cloth for power batteries and preparation method thereof |
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