CN219007266U - Fireproof and heat-insulating assembly for silica aerogel glass fiber felt flat plate - Google Patents
Fireproof and heat-insulating assembly for silica aerogel glass fiber felt flat plate Download PDFInfo
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- CN219007266U CN219007266U CN202223330149.5U CN202223330149U CN219007266U CN 219007266 U CN219007266 U CN 219007266U CN 202223330149 U CN202223330149 U CN 202223330149U CN 219007266 U CN219007266 U CN 219007266U
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Abstract
The utility model discloses a fireproof heat-insulating assembly for a silica aerogel glass fiber felt flat plate, which comprises a silica aerogel glass fiber felt flat plate, wherein the outer side of the silica aerogel glass fiber felt flat plate is coated and bonded with a flame-retardant cotton paper double faced adhesive tape, and one side of the silica aerogel glass fiber felt flat plate is bonded with a high silica cloth layer through coating and bonding with the flame-retardant cotton paper double faced adhesive tape. Through the mode, the silica aerogel glass fiber blanket plate fireproof heat insulation assembly can reduce the impact of the thermal runaway flame of the electric core on the silica aerogel glass fiber blanket plate through the double-layer high silica cloth when the thermal runaway accident of the electric core in the battery pack occurs, realize the protection effect, and reduce the transmission of the thermal runaway flame energy of the electric core to the battery pack top cover through the silica aerogel glass fiber blanket plate, so that the battery pack top cover is not burnt through within 30min, and the escape and rescue time is won for passengers in the electric automobile.
Description
Technical Field
The utility model relates to the field of silica aerogel glass fiber felt products, in particular to a fireproof heat-insulating component for a silica aerogel glass fiber felt flat plate.
Background
The chemical batteries of electric vehicles are the most widely used battery types in the field of electric vehicles at present, such as nickel-hydrogen batteries, lithium ion batteries, lithium polymer batteries, fuel cells and the like, and belong to the category.
The surface of the preoxidized fiber aerogel fiber felt applied to the lithium ion storage battery pack in the market is encapsulated by flame-retardant glue, the highest resistant temperature is not more than 280 ℃, the heat conductivity coefficient at normal temperature is about 0.033-0.036, and the specific surface area is 230-350 m < 2 >/g. Pre-oxidized carbon fiber is an excellent conductor of heat transfer and burns to a smoke or fire at high temperatures.
The surface of the pre-oxidized fiber aerogel fiber felt is burnt at high temperature by a product encapsulated by flame-retardant glue, and the fire is burnt due to the instant impact ablation of high-temperature energy which cannot withstand the impact short circuit of the battery cell, at the moment, the heat insulation and flame retardance functions at low temperature are lost, the fire heat transfer of the pre-oxidized fiber carbon fiber is greatly increased, so that the adjacent cell in the battery pack is overheated and detonated, the accident of the battery pack is instantly enlarged, and at the moment, the high-temperature and high-temperature flame released by the short circuit electric energy in the battery pack is difficult to extinguish, so that the whole vehicle is spontaneously ignited.
Therefore, the pre-oxidized fiber aerogel fiber felt is inflammable and non-heat-insulating in a storage battery pack of an electric automobile, so that brands of automobiles of some new energy automobiles are in a dead market and a whole automobile factory is closed, and property loss of consumers and enthusiasm of the consumers to purchase the new energy automobiles are hit.
Defects of silica aerogel needled glass fiber mat: the thickness tolerance is large, 3mm is allowed in the standard of GB/T34336-2017 nano-porous aerogel composite heat insulation products, and the density is allowed to reach 15% of non-uniformity. Therefore, the silica aerogel needled glass fiber felt is generally applied to the energy-saving field of industrial pipeline cladding. Cannot enter high-end equipment or electromechanical equipment for application.
Disclosure of Invention
The technical problem to be solved mainly by the utility model is to provide the silica aerogel glass fiber blanket flat plate fireproof heat insulation component, which can reduce the impact of the thermal runaway flame of the electric core on the silica aerogel glass fiber blanket flat plate through double-layer high silica cloth when the thermal runaway accident of the electric core in the battery pack occurs, realize the protection effect, and reduce the transmission of the thermal runaway flame energy of the electric core to the battery pack top cover by the silica aerogel glass fiber blanket flat plate, so that the battery pack top cover is not burnt through within 30min, and the escape and rescue time is won for passengers in the electric automobile.
In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a dull and stereotyped fire prevention thermal-insulated subassembly of silica aerogel glass fiber blanket, including the dull and stereotyped of silica aerogel glass fiber blanket, the dull and stereotyped outside cladding of silica aerogel glass fiber blanket bonds there is fire-retardant cotton paper double faced adhesive tape, the dull and stereotyped at least one side of silica aerogel glass fiber blanket has fire-retardant cotton paper double faced adhesive tape to bond there is high silica cloth layer through covering and bonding.
In a preferred embodiment of the present utility model, another high silica cloth layer is adhered to the outer side of the high silica cloth layer through a double sided adhesive tape of the flame retardant cotton paper.
In a preferred embodiment of the present utility model, the two sides of the silica aerogel glass fiber felt plate are adhered with a high silica cloth layer through a double sided adhesive coated with flame retardant cotton paper.
In a preferred embodiment of the present utility model, the other side of the silica aerogel glass fiber felt plate is adhered with release paper through double sided adhesive tape adhered with flame retardant cotton paper.
In a preferred embodiment of the utility model, the thickness of the silica aerogel glass fiber blanket plate is less than or equal to 2mm, and the tolerance delta is less than or equal to +/-0.2.
In a preferred embodiment of the utility model, the thickness of the silica aerogel glass fiber blanket plate is more than 2mm, and the tolerance delta is less than or equal to +/-0.3.
In a preferred embodiment of the utility model, the density of the silica aerogel glass fiber blanket plate is 90 kg/m 3 -600 kg/m 3 。
In a preferred embodiment of the present utility model, the aerogel in the silica aerogel glass fiber blanket panel is a hydrophilic aerogel or a hydrophobic aerogel.
The beneficial effects of the utility model are as follows: according to the fireproof heat-insulating component for the silica aerogel glass fiber mat flat plate, after the thermal runaway detonation of the power battery pack, and under the condition that high-temperature and high-pressure smoke in the pack flows through the explosion-proof valve to quickly release pressure and is smooth, the high-silica cloth can work at 1000 ℃, the high-temperature-resistant silica aerogel glass fiber mat flat plate can work at 800 ℃, and the fireproof heat-insulating component can resist flame impact of 1200 ℃ in a short time.
According to the fireproof heat-insulating component for the silica aerogel glass fiber mat flat plate, when an electric core thermal runaway accident occurs in the battery pack, the double-layer high silica cloth is contacted with flame first, the double-layer high silica cloth plays a role in reducing the impact of the electric core thermal runaway flame on the silica aerogel glass fiber mat flat plate, and the silica aerogel glass fiber mat flat plate can be effectively protected.
According to the silica aerogel glass fiber blanket flat plate fireproof heat insulation assembly, the silica aerogel glass fiber blanket flat plate isolates the thermal runaway flame energy of the battery cell from the battery pack top cover, so that heat is reduced to transfer to the battery pack top cover, the battery pack top cover is not burnt through within 30min, and escape and rescue time is obtained for passengers in an electric automobile.
Drawings
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic view of a silica aerogel glass mat panel fire-resistant and heat-insulating assembly according to a preferred embodiment of the utility model;
FIG. 2 is a schematic view of another preferred embodiment of a silica aerogel glass mat flat fireproof insulation assembly;
FIG. 3 is a schematic view of another preferred embodiment of a silica aerogel glass mat flat fireproof insulation assembly;
the components in the drawings are marked as follows: 1. 2 parts of a silica aerogel glass fiber felt plate, 2 parts of a flame-retardant cotton paper double faced adhesive tape, 3 parts of a high silica cloth layer, 4 parts of release paper.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below. The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the utility model, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the utility model, without affecting the effect or achievement of the objective. Also, the terms "upper", "lower", "left", "right", "middle", and the like are used herein for descriptive purposes only and are not intended to limit the scope of the utility model for modification or adjustment of the relative relationships thereof, as they are also considered within the scope of the utility model without substantial modification to the technical context.
Referring to fig. 1, a fireproof and heat-insulating assembly for a silica aerogel glass fiber mat plate comprises a silica aerogel glass fiber mat plate 1. The aerogel in the silica aerogel glass fiber felt flat plate 1 is hydrophilic aerogel or hydrophobic aerogel.
The thickness of the silica aerogel glass fiber felt flat plate 1 is less than or equal to 2mm, and the tolerance delta is less than or equal to +/-0.2. The thickness of the silica aerogel glass fiber felt flat plate 1 is more than 2mm, and the tolerance delta is less than or equal to +/-0.3. The density of the silica aerogel glass fiber felt flat plate 1 is 90-600 kg/m 3 . The specific heat capacity of the silica aerogel glass fiber mat plate 1 at 25 ℃ is 1.06J/(g.DEG C); the specific heat capacity of the silica aerogel glass fiber mat plate 1 at 100 ℃ is 1.43J/(g.cndot.) C.
The performance index of the silica aerogel glass fiber mat panel 1 is shown in the following table:
thermal conductivity of the silica aerogel glass fiber mat plate 1 is shown in the following table
| Temperature (temperature) | 25℃ | 100℃ | 300℃ | 500℃ | 600 ℃ (Shanghai general purpose) | 700℃ | 800℃ |
| CATL Nide time, biedi, shanghai general thermal conductivity w/(m.k) | 0.03 | 0.03 | 0.04 | 0.08 | 0.083 | ||
| Heat conductivity coefficient w/(m.k) of T2mm thick aerogel glass fiber mat produced by Jiangsu Panya micro-transmission micro-VENT in industrial mass production | 0.02 | 0.024 | 0.029 | 0.043 | 0.084 | 0.012 | |
| Thermal conductivity w/(m.k) GB/10294 of Jiangsu Pan micro-penetration entrusted south glass hospital detection | 0.017 | 0.029 | 0.037 | 0.053 | 0.066 | 0.089 | 0.094 |
The outer side of the silica aerogel glass fiber felt flat plate 1 is coated and bonded with a flame-retardant cotton paper double faced adhesive tape 2. Flame retardant tissue double sided tape MT-SQ12 product properties (Features): the adhesive has good enough viscosity, and the fireproof effect reaches UL 94V 0; the foam pad is used for battery fire prevention, eva adhesion, sound absorption cotton adhesion, adhesion of a film switch circuit and adhesion and fixation of an electronic element foam pad.
The physical properties of the flame-retardant tissue double faced adhesive tape 2 are shown in the following table:
at least one side of the silica aerogel glass fiber felt plate 1 is adhered with a high silica cloth layer 3 through a double faced adhesive tape 2 coated with flame retardant cotton paper.
The performance index of the high silica cloth HS-3003 is shown in the following table:
the other side of the silica aerogel glass fiber felt plate 1 is adhered with release paper 4 through a double faced adhesive tape 2 coated with flame retardant cotton paper. The release paper 4 is release paper, plays a role in isolation and protection in storage and transportation, and is a layer of protective paper to be removed when a customer installs the release paper.
After the thermal runaway detonation of the power battery pack, and under the condition that high-temperature and high-pressure flue gas in the pack flows through an explosion-proof valve to quickly release pressure and is smooth (the internal and external air pressures are close to balance), the high silica cloth layer 3 can work at the temperature of 1000 ℃, the high-temperature-resistant silica aerogel glass fiber felt flat plate 1 can work at the temperature of 800 ℃, and the fireproof heat insulation component can resist flame impact of 1200 ℃ in a short time.
In example 2, as shown in fig. 2, another high silica cloth layer 3 was adhered to the outer side of the high silica cloth layer 3 through a double sided adhesive tape 2 of flame retardant cotton paper. Namely, two layers of high silica cloth layers 3 are sequentially arranged on one side of the silica aerogel glass fiber felt flat plate 1, so that the fireproof and heat-insulating effects are further improved. The procedure is as in example 1.
Example 3 as shown in fig. 3, a high silica cloth layer 3 is adhered to both sides of a silica aerogel glass fiber mat plate 1 by coating a double sided tape 2 adhered with flame retardant cotton paper. And two high silica cloth layers 3 are arranged on two sides of the silica aerogel glass fiber felt flat plate 1. The two sides of the silica aerogel glass fiber felt flat plate 1 are protected.
Compared with the prior art, the silica aerogel glass fiber felt flat plate fireproof heat insulation component provided by the utility model has the advantages that when an electric core thermal runaway accident occurs in a battery pack, the impact of electric core thermal runaway flame on the silica aerogel glass fiber felt flat plate is reduced through the double-layer high silica cloth, the protection effect is realized, the transmission of electric core thermal runaway flame energy to the battery pack top cover is reduced through the silica aerogel glass fiber felt flat plate insulation, the battery pack top cover is not burnt out within 30min, and escape and rescue time is won for passengers in an electric automobile.
The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.
Claims (8)
1. The utility model provides a dull and stereotyped fire prevention thermal-insulated subassembly of silica aerogel glass fiber felt, its characterized in that includes the dull and stereotyped of silica aerogel glass fiber felt, the dull and stereotyped outside cladding of silica aerogel glass fiber felt bonds there is fire-retardant cotton paper double faced adhesive tape, the dull and stereotyped at least one side of silica aerogel glass fiber felt has fire-retardant cotton paper double faced adhesive tape to bond there is high silica cloth layer through covering and bonding.
2. The silica aerogel glass fiber blanket panel fire and heat insulation assembly of claim 1, wherein the outside of the high silica cloth layer is adhered with another high silica cloth layer by a flame retardant tissue double sided tape.
3. The silica aerogel glass fiber blanket panel fireproof heat insulation assembly according to claim 2, wherein the silica aerogel glass fiber blanket panel is adhered with a high silica cloth layer on two sides by a double sided adhesive coated with flame retardant cotton paper.
4. The silica aerogel glass fiber blanket panel fireproof insulation assembly of claim 2, wherein the other side of the silica aerogel glass fiber blanket panel is bonded with release paper by a double sided adhesive coated with a flame retardant tissue.
5. The silica aerogel glass fiber blanket panel fire and insulation assembly of claim 1, wherein the silica aerogel glass fiber blanket panel has a thickness of 2mm or less and a tolerance delta of 0.2 or less.
6. The silica aerogel glass fiber blanket panel fire and insulation assembly of claim 1, wherein the silica aerogel glass fiber blanket panel has a thickness greater than 2mm and a tolerance delta less than or equal to ± 0.3.
7. The silica aerogel glass fiber blanket panel fire and insulation assembly of claim 5 or 6, wherein the silica aerogel glass fiber blanket panel has a density of 90 kg/m 3 -600 kg/m 3 。
8. The silica aerogel glass fiber blanket panel fire and insulation assembly of claim 7, wherein the aerogel in the silica aerogel glass fiber blanket panel is a hydrophilic aerogel or a hydrophobic aerogel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223330149.5U CN219007266U (en) | 2022-12-13 | 2022-12-13 | Fireproof and heat-insulating assembly for silica aerogel glass fiber felt flat plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223330149.5U CN219007266U (en) | 2022-12-13 | 2022-12-13 | Fireproof and heat-insulating assembly for silica aerogel glass fiber felt flat plate |
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| Publication Number | Publication Date |
|---|---|
| CN219007266U true CN219007266U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223330149.5U Active CN219007266U (en) | 2022-12-13 | 2022-12-13 | Fireproof and heat-insulating assembly for silica aerogel glass fiber felt flat plate |
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| Country | Link |
|---|---|
| CN (1) | CN219007266U (en) |
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- 2022-12-13 CN CN202223330149.5U patent/CN219007266U/en active Active
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