CN217863147U - Composite fireproof structure - Google Patents
Composite fireproof structure Download PDFInfo
- Publication number
- CN217863147U CN217863147U CN202222223287.7U CN202222223287U CN217863147U CN 217863147 U CN217863147 U CN 217863147U CN 202222223287 U CN202222223287 U CN 202222223287U CN 217863147 U CN217863147 U CN 217863147U
- Authority
- CN
- China
- Prior art keywords
- layer
- composite material
- fiber cloth
- material layer
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model discloses a composite fireproof structure, which comprises a fireproof heat-insulating layer and a lower composite material layer which are compounded together, wherein the fireproof heat-insulating layer and the lower composite material layer are laminated up and down, the lower composite material layer is a resin-based composite material layer formed by compounding n layers of resin prepregs, the n layers of resin prepregs are laminated from top to bottom, n is more than or equal to 1, and the fireproof heat-insulating layer comprises a ceramic silicone rubber layer; the advantage can directly be as panel preparation battery package structure, does not need additionally to lay fireproof material again, just can realize battery package thermal runaway protection, has avoided additionally implementing the problem that this kind of fire prevention scheme of laying fireproof material leads to, and the comprehensive cost income is high.
Description
Technical Field
The utility model relates to a fire resistive construction especially relates to a compound fire resistive construction.
Background
In recent years, with the increasing global energy crisis and the gradual depletion of petroleum resources, automobiles serving as main tools for people to travel are gradually updated, new energy automobiles are produced, and the new energy automobiles serving as the heart of the new energy automobiles, namely the battery core, are usually installed at the bottom of the automobiles in a modularized integrated battery pack form, and structural members (such as an upper cover and a tray of the battery pack, a partition plate between adjacent battery modules and the like) of the new energy automobiles are generally made of steel plates, aluminum alloys or resin-based fiber reinforced composite materials serving as plates. Compared with a steel plate or an aluminum alloy, the resin-based fiber reinforced composite material compounded by the fiber reinforced material and the resin has the advantages of high specific strength, high specific rigidity, corrosion resistance, light weight and the like, and becomes a preferred plate for a battery pack structural member.
However, since the ablation resistance of the resin-based fiber reinforced composite material is limited, when one or more cells in the battery pack cause structural instability due to external stimulation, the cells are triggered to be out of control thermally, active particles in the cells are sprayed in a spark form and directly impact structural members of the battery pack, the structural members can be melted or decomposed at high temperature in a short time, and at the moment, the fire can be diffused from the battery pack, so that the personal safety of vehicles and persons in the vehicles is endangered.
At present, to the fire prevention measure of new energy automobile battery package thermal runaway, the structure that receives electric core thermal runaway direct impact easily or certain part department of structure lay fire-proof material (such as mica plate, aerogel felt etc.) at the battery package mainly, though can effectively prevent the intensity of a fire and spread in the battery package inside like this, restrain the diffusion of the condition of a fire. But fireproof material's laying is mostly manual operation, can't realize the automation, leads to production efficiency to hang down, and manufacturing cost is high, and simultaneously, its laying quality is difficult to effectively guarantee, in case when appearing laying the quality problem, will can't restrain stretching of condition of a fire comprehensively.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a compound fire resistive construction with lightweight and fire prevention ablation resistance can, and this compound fire resistive construction can directly be as panel preparation battery package structure, does not need additionally to lay fireproof material again, just can realize the thermal runaway protection of battery package, has avoided additionally implementing the problem of laying that this kind of fire prevention scheme of fireproof material leads to, and comprehensive cost income is high.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a composite fireproof structure comprises a fireproof heat-insulating layer and a lower composite material layer which are compounded together, wherein the fireproof heat-insulating layer and the lower composite material layer are stacked up and down, the lower composite material layer is a resin-based composite material layer formed by compounding n layers of resin prepregs, the n layers of resin prepregs of the lower composite material layer are stacked from top to bottom, n is larger than or equal to 1, and the fireproof heat-insulating layer comprises a ceramic silicone rubber layer.
Preferably, n is an integer of 2 or more and 7 or less.
The composite fireproof structure further comprises an upper composite material layer, the upper composite material layer and the fireproof heat insulation layer are compounded together, the upper composite material layer and the fireproof heat insulation layer are stacked up and down, the upper composite material layer is a resin-based composite material layer formed by compounding m layers of resin prepregs, the m layers of resin prepregs of the upper composite material layer are stacked from top to bottom, and m is larger than or equal to 1.
Preferably, m is an integer of 1 or more and 7 or less.
The fireproof heat-insulating layer also comprises a lower supporting layer compounded with the ceramic silicon rubber layer, the ceramic silicon rubber layer and the lower supporting layer are stacked up and down, and the lower supporting layer is any one of glass fiber cloth, kevlar fiber cloth, quartz fiber cloth, carbon fiber cloth, basalt fiber cloth and asbestos fiber cloth.
The fireproof heat-insulating layer further comprises an upper supporting layer compounded with the ceramic silicon rubber layer, the upper supporting layer and the ceramic silicon rubber layer are stacked up and down, and the upper supporting layer is any one of glass fiber cloth, kevlar fiber cloth, quartz fiber cloth, carbon fiber cloth, basalt fiber cloth and asbestos fiber cloth.
The thickness of the upper supporting layer is 0.1mm-0.8mm.
The thickness of the ceramic silicon rubber layer is 0.1mm-2mm, the thickness of each resin prepreg in the lower composite material layer is 0.2mm-0.8mm, and each resin prepreg in the lower composite material layer is epoxy vinyl resin prepreg or phenolic vinyl resin prepreg.
The thickness of each layer of resin prepreg in the upper composite material layer is 0.2mm-0.8mm, and each layer of resin prepreg in the upper composite material layer is epoxy vinyl resin prepreg or phenolic vinyl resin prepreg.
The thickness of the lower supporting layer is 0.1mm-0.8mm.
Compared with the prior art, the utility model has the advantages of: through the compound fire prevention structure that constitutes of fire prevention insulating layer and lower combined material layer together, fire prevention insulating layer and lower combined material layer are range upon range of from top to bottom, and lower combined material layer adopts the lightweight material that the multilayer has high specific strength, high specific stiffness and stronger corrosion resistance-resin preimpregnation material complex to form, and from this the combined material layer has the dual advantage of lightweight and the anti-ablation performance of fire prevention down, and fire prevention insulating layer adopts ceramic silastic layer to realize, and ceramic silastic layer is excellent fire prevention thermal insulation material, and fire prevention insulating layer has excellent fire prevention thermal insulation performance, from this the utility model discloses can directly prepare battery package structure as panel, need not additionally lay fire prevention material again, just can realize the thermal runaway protection of battery package, avoided additionally implementing the problem that this kind of fire prevention scheme of laying fire prevention material leads to, comprehensive cost income is high.
Drawings
Fig. 1 is a schematic structural view of a composite fire protection structure according to a first embodiment and a second embodiment of the present invention;
fig. 2 is a schematic structural view of a composite fire protection structure according to a third embodiment and a fourth embodiment of the present invention;
fig. 3 is a schematic structural view of a composite fire protection structure according to a fifth embodiment and a sixth embodiment of the present invention;
fig. 4 is a schematic structural view of a composite fire protection structure according to a seventh embodiment and a eighth embodiment of the present invention;
fig. 5 is a schematic structural view of a composite fire protection structure according to the ninth and tenth embodiments of the present invention;
fig. 6 is a schematic structural view of a composite fire protection structure according to an eleventh embodiment and a twelfth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The first embodiment is as follows: as shown in figure 1, the composite fireproof structure comprises a fireproof heat-insulating layer 1 and a lower composite material layer 2 which are compounded together, wherein the fireproof heat-insulating layer 1 and the lower composite material layer 2 are stacked up and down, the lower composite material layer 2 is a resin-based composite material layer formed by compounding n layers of resin prepregs, the n layers of resin prepregs 21 of the lower composite material layer 2 are stacked from top to bottom, n is larger than or equal to 1, the fireproof heat-insulating layer 1 is formed by a ceramic silicone rubber layer, the thickness of the ceramic silicone rubber layer is 0.1mm, the thickness of each layer of resin prepreg 21 in the lower composite material layer 2 is 0.2mm, and each layer of resin prepreg 21 in the lower composite material layer 2 is V201 epoxy vinyl prepreg or V401 vinyl prepreg of Jiyi composite materials science and technology Limited.
The second embodiment: this embodiment is substantially the same as the first embodiment except that: in this embodiment, the thickness of the ceramic silicone rubber layer is 2mm, and the thickness of each resin prepreg 21 in the lower composite material layer 2 is 0.8mm.
Example three: as shown in fig. 2, a composite fireproof structure comprises a fireproof heat-insulating layer 1 and a lower composite material layer 2 which are compounded together, wherein the fireproof heat-insulating layer 1 and the lower composite material layer 2 are stacked up and down, the lower composite material layer 2 is a resin-based composite material layer formed by compounding n layers of resin prepregs, the n layers of resin prepregs 21 of the lower composite material layer 2 are stacked from top to bottom, n is larger than or equal to 1, the fireproof heat-insulating layer 1 is formed by a ceramic silicone rubber layer, the thickness of the ceramic silicone rubber layer is 0.1mm, the thickness of each layer of resin prepreg 21 in the lower composite material layer 2 is 0.2mm, and each layer of resin prepreg 21 in the lower composite material layer 2 is V201 epoxy vinyl prepreg or V401 vinyl prepreg of Jiyi composite materials science and technology Limited.
In this embodiment, the composite fireproof structure further includes an upper composite material layer 3, the upper composite material layer 3 is combined with the fireproof heat-insulating layer 1, the upper composite material layer 3 is stacked with the fireproof heat-insulating layer 1 from top to bottom, the upper composite material layer 3 is a resin-based composite material layer formed by compounding m layers of resin prepregs, the m layers of resin prepregs 31 of the upper composite material layer 3 are stacked from top to bottom, m is greater than or equal to 1, the thickness of each layer of resin prepreg 31 in the upper composite material layer 3 is 0.2mm, and each layer of resin prepreg 31 in the upper composite material layer 3 is a V201 epoxy vinyl prepreg or a V401 phenolic vinyl prepreg of the short and convenient composite material science and technology limited company.
Example four: this embodiment is substantially the same as the third embodiment, except that: in this embodiment, the thickness of the ceramic silicone rubber layer is 2mm, the thickness of each resin prepreg 21 in the lower composite material layer 2 is 0.8mm, and the thickness of each resin prepreg 31 in the upper composite material layer 3 is 0.8mm.
Example five: as shown in fig. 3, a composite fireproof structure comprises a fireproof heat insulation layer 1 and a lower composite material layer 2 which are compounded together, wherein the fireproof heat insulation layer 1 and the lower composite material layer 2 are stacked up and down, the lower composite material layer 2 is a resin-based composite material layer formed by compounding n layers of resin prepregs, the n layers of resin prepregs 21 in the lower composite material layer 2 are stacked from top to bottom, n is larger than or equal to 1, the fireproof heat insulation layer 1 comprises a ceramic silicone rubber layer 11 and a lower support layer 12 compounded with the ceramic silicone rubber layer 11, the ceramic silicone rubber layer 11 and the lower support layer 12 are stacked up and down, the lower support layer 12 is any one of glass fiber cloth, kevlar fiber cloth, quartz fiber cloth, carbon fiber cloth, basalt fiber cloth and asbestos fiber cloth, the thickness of the ceramic silicone rubber layer 11 is 0.1mm, the thickness of the lower support layer 12 is 0.1mm, the thickness of each layer of resin prepregs 21 in the lower composite material layer 2 is 0.2mm, and each layer of resin prepregs 21 in the lower composite material layer 2 is V201 or V epoxy vinyl prepregs 401 suitable for jie.
Example six: this embodiment is substantially the same as the fifth embodiment except that: in this embodiment, the thickness of the ceramic silicone rubber layer 11 is 2mm, the thickness of the lower support layer 12 is 0.8mm, and the thickness of each resin prepreg 21 in the lower composite material layer 2 is 0.8mm.
Example seven: as shown in fig. 4, a composite fire-proof structure comprises a fire-proof thermal insulation layer 1 and a lower composite material layer 2 which are compounded together, wherein the fire-proof thermal insulation layer 1 and the lower composite material layer 2 are stacked up and down, the lower composite material layer 2 is a resin-based composite material layer formed by compounding n layers of resin prepregs, the n layers of resin prepregs 21 of the lower composite material layer 2 are stacked from top to bottom, n is not less than 1, the fire-proof thermal insulation layer 1 comprises a ceramic silicone rubber layer 11 and an upper support layer 13 compounded with the ceramic silicone rubber layer 11, the upper support layer 13 is stacked up and down with the ceramic silicone rubber layer 11, the upper support layer 13 is any one of glass fiber cloth, kevlar fiber cloth, quartz fiber cloth, carbon fiber cloth, basalt fiber cloth and asbestos fiber cloth, the ceramic silicone rubber layer 11 is 0.1mm in thickness, the upper support layer 13 is 0.1mm in thickness, each layer of resin prepregs 21 in the lower composite material layer 2 is 0.2mm in thickness, and each layer of resin 21 in the lower composite material layer 2 is preferably V201 epoxy vinyl resins or 401V vinyl resins of zeigo technologies.
Example eight: this embodiment is substantially the same as embodiment seven except that: in this embodiment, the thickness of the ceramic silicone rubber layer 11 is 2mm, the thickness of the upper support layer 13 is 0.8mm, and the thickness of each resin prepreg 21 in the lower composite material layer 2 is 0.8mm.
Example nine: as shown in fig. 5, a composite fireproof structure comprises a fireproof heat insulation layer 1 and a lower composite material layer 2 which are compounded together, wherein the fireproof heat insulation layer 1 and the lower composite material layer 2 are stacked up and down, the lower composite material layer 2 is a resin-based composite material layer formed by compounding n layers of resin prepregs, the n layers of resin prepregs 21 of the lower composite material layer 2 are stacked from top to bottom, n is larger than or equal to 1, the fireproof heat insulation layer 1 comprises a ceramic silicone rubber layer 11 and a lower support layer 12 compounded with the ceramic silicone rubber layer 11, the ceramic silicone rubber layer 11 and the lower support layer 12 are stacked up and down, the lower support layer 12 is any one of glass fiber cloth, kevlar fiber cloth, quartz fiber cloth, carbon fiber cloth, basalt fiber cloth and asbestos fiber cloth, the thickness of the ceramic silicone rubber layer 11 is 0.1mm, the thickness of the lower support layer 12 is 0.1mm, the thickness of each layer of resin prepregs 21 in the lower composite material layer 2 is 0.2mm, and each layer of resin prepregs 21 in the lower composite material layer 2 is V201 epoxy vinyl prepreg or V vinyl prepreg 401 suitable for jee.
In this embodiment, the composite fireproof structure further includes an upper composite material layer 3, the upper composite material layer 3 is combined with the fireproof heat-insulating layer 1, the upper composite material layer 3 is stacked with the fireproof heat-insulating layer 1 from top to bottom, the upper composite material layer 3 is a resin-based composite material layer formed by compounding m layers of resin prepregs, the m layers of resin prepregs 31 of the upper composite material layer 3 are stacked from top to bottom, m is greater than or equal to 1, the thickness of each layer of resin prepreg 31 in the upper composite material layer 3 is 0.2mm, and each layer of resin prepreg 31 in the upper composite material layer 3 is a V201 epoxy vinyl prepreg or a V401 phenolic vinyl prepreg of the short and convenient composite material science and technology limited company.
Example ten: this example is substantially the same as example nine, except that: in this embodiment, the thickness of the ceramic silicone rubber layer 11 is 2mm, the thickness of the lower support layer 12 is 0.8mm, the thickness of each resin prepreg 21 in the lower composite material layer 2 is 0.8mm, and the thickness of each resin prepreg 31 in the upper composite material layer 3 is 0.8mm.
Example eleven: as shown in fig. 6, a composite fireproof structure comprises a fireproof heat-insulating layer 1 and a lower composite material layer 2 which are compounded together, the fireproof heat-insulating layer 1 and the lower composite material layer 2 are stacked up and down, the lower composite material layer 2 is a resin-based composite material layer formed by compounding n layers of resin prepregs, the n layers of resin prepregs 21 of the lower composite material layer 2 are stacked from top to bottom, n is greater than or equal to 1, the fireproof heat-insulating layer 1 comprises a ceramized silicone rubber layer 11, a lower support layer 12 compounded with the ceramized silicone rubber layer 11 and an upper support layer 13 compounded with the ceramized silicone rubber layer 11, the ceramized silicone rubber layer 11 and the lower support layer 12 are stacked up and down, the upper support layer 13 and the ceramized silicone rubber layer 11 are stacked up and down, the lower support layer 12 is any one of glass fiber cloth, kevlar fiber cloth, basalt fiber cloth, carbon fiber cloth, asbestos fiber cloth, the upper support layer 13 is any one of glass fiber cloth, kevlar fiber cloth, quartz fiber cloth, ceramic fiber cloth, basalt fiber cloth, the ceramic silicone fiber cloth, the ceramic fiber cloth is 0.1mm, the lower composite material layer 12 is preferably 0.21 mm, the vinyl resin material layer 1.21 mm, and the vinyl composite material layer is a vinyl prepreg 2.21 mm.
In this embodiment, the composite fireproof structure further includes an upper composite material layer 3, the upper composite material layer 3 is combined with the fireproof heat-insulating layer 1, the upper composite material layer 3 is stacked with the fireproof heat-insulating layer 1 from top to bottom, the upper composite material layer 3 is a resin-based composite material layer formed by compounding m layers of resin prepregs, the m layers of resin prepregs 31 of the upper composite material layer 3 are stacked from top to bottom, m is greater than or equal to 1, the thickness of each layer of resin prepreg 31 in the upper composite material layer 3 is 0.2mm, and each layer of resin prepreg 31 in the upper composite material layer 3 is a V201 epoxy vinyl prepreg or a V401 phenolic vinyl prepreg of the short and convenient composite material science and technology limited company.
Example twelve: this example is substantially the same as example eleven except that: in this embodiment, the thickness of the ceramic silicone rubber layer 11 is 2mm, the thickness of the lower support layer 12 is 0.8mm, the thickness of the upper support layer 13 is 0.8mm, the thickness of each resin prepreg 21 in the lower composite material layer 2 is 0.8mm, and the thickness of each resin prepreg 31 in the upper composite material layer 3 is 0.8mm.
Claims (10)
1. The composite fireproof structure is characterized by comprising a fireproof heat-insulating layer and a lower composite material layer which are compounded together, wherein the fireproof heat-insulating layer and the lower composite material layer are stacked up and down, the lower composite material layer is a resin-based composite material layer formed by compounding n layers of resin prepregs, the n layers of resin prepregs of the lower composite material layer are stacked from top to bottom, n is larger than or equal to 1, and the fireproof heat-insulating layer comprises a ceramic silicon rubber layer.
2. The composite fireproof structure of claim 1, further comprising an upper composite material layer, wherein the upper composite material layer and the fireproof heat-insulating layer are compounded together, the upper composite material layer and the fireproof heat-insulating layer are stacked up and down, the upper composite material layer is a resin-based composite material layer formed by compounding m resin prepregs, the m resin prepregs of the upper composite material layer are stacked from top to bottom, and m is greater than or equal to 1.
3. The composite fireproof structure of claim 2, wherein the fireproof heat insulation layer further comprises a lower support layer compounded with the ceramic silicone rubber layer, the ceramic silicone rubber layer and the lower support layer are stacked up and down, and the lower support layer is any one of glass fiber cloth, kevlar fiber cloth, quartz fiber cloth, carbon fiber cloth, basalt fiber cloth and asbestos fiber cloth.
4. The composite fireproof structure of claim 1, wherein the fireproof heat-insulating layer further comprises a lower support layer compounded with the ceramized silicone rubber layer, the ceramized silicone rubber layer and the lower support layer are stacked up and down, and the lower support layer is any one of glass fiber cloth, kevlar fiber cloth, quartz fiber cloth, carbon fiber cloth, basalt fiber cloth and asbestos fiber cloth.
5. A composite fire-proof structure as claimed in claim 1 or 3, wherein the fire-proof and thermal insulation layer further comprises an upper support layer compounded with the ceramicized silicone rubber layer, the upper support layer and the ceramicized silicone rubber layer are laminated up and down, and the upper support layer is any one of glass fiber cloth, kevlar fiber cloth, quartz fiber cloth, carbon fiber cloth, basalt fiber cloth and asbestos fiber cloth.
6. A composite fire resistive construction according to claim 5, wherein the upper support layer has a thickness in the range of 0.1mm to 0.8mm.
7. A composite fire resistive construction according to claim 1, wherein said layer of ceramic silicone rubber has a thickness of 0.1mm to 2mm, and said lower layer of composite material has a thickness of 0.2mm to 0.8mm, and said lower layer of composite material has a thickness of epoxy vinyl prepreg or phenolic vinyl prepreg.
8. The composite fire protection structure of claim 2, wherein each resin prepreg in the upper composite material layer has a thickness of 0.2mm to 0.8mm, and each resin prepreg in the upper composite material layer is an epoxy vinyl prepreg or a phenolic vinyl prepreg.
9. A composite fire-barrier construction according to claim 3, wherein the lower support layer has a thickness of from 0.1mm to 0.8mm.
10. A composite fire-barrier construction according to claim 4, characterised in that the thickness of the lower supporting layer is from 0.1mm to 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222223287.7U CN217863147U (en) | 2022-08-24 | 2022-08-24 | Composite fireproof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222223287.7U CN217863147U (en) | 2022-08-24 | 2022-08-24 | Composite fireproof structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217863147U true CN217863147U (en) | 2022-11-22 |
Family
ID=84080402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222223287.7U Active CN217863147U (en) | 2022-08-24 | 2022-08-24 | Composite fireproof structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217863147U (en) |
-
2022
- 2022-08-24 CN CN202222223287.7U patent/CN217863147U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2023279649A1 (en) | Battery box and composite material for battery box | |
| CN111463519A (en) | Battery buffering heat insulation cooling plate, power battery pack and automobile | |
| CN108909118A (en) | A kind of single side polyimide composite film of resistance to elemental oxygen material and preparation method thereof | |
| CN112959759A (en) | Multilayer fireproof material for battery and manufacturing method thereof | |
| CN206734213U (en) | Damping harden structure and automobile | |
| CN1906084A (en) | Aircraft fuselage | |
| CN217863147U (en) | Composite fireproof structure | |
| CN112208170A (en) | Heat transfer flame-retardant graphene heat-conducting plate and preparation method thereof | |
| CN210110803U (en) | Light backboard for photovoltaic module and light photovoltaic module applying light backboard | |
| WO2024160283A1 (en) | Battery pack cover plate, battery pack and vehicle | |
| CN110690375A (en) | Composite construction's flame retardant coating and use battery system of this flame retardant coating | |
| CN206520280U (en) | A kind of shellproof anti-explosion plate | |
| CN212046258U (en) | Automobile battery box upper cover | |
| CN112793244A (en) | Fire-proof heat insulation product | |
| CN217562670U (en) | Impact-resistant heat-insulation structure, battery pack and battery pack | |
| CN114665206A (en) | Flame-retardant and explosion-proof new energy automobile battery case and preparation method thereof | |
| CN114590008A (en) | Heat-insulating multilayer composite material for battery cell module and preparation method and application thereof | |
| CN109941423B (en) | Modular multifunctional heat-proof structure for hypersonic aircraft | |
| CN219947496U (en) | Composite heat insulation structure | |
| CN114614166A (en) | Battery pack with thermal barrier | |
| CN218769767U (en) | Ultra-thin type electricity core heat shield | |
| CN221540876U (en) | Flame-retardant heat-insulating material for power battery and power battery | |
| KR102681216B1 (en) | Steel Sheet-Integrated Photovoltaic Module | |
| CN221794075U (en) | Fiber reinforced polyolefin composite board, battery backboard and battery | |
| CN219773426U (en) | Indoor heating building material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |