Fire-extinguishing flame-retardant explosion-proof battery storage bag composite structure and battery storage bag

Abstract

The fire-extinguishing flame-retardant explosion-proof battery storage bag composite structure comprises a heat transfer layer, a cooling explosion-proof layer, a fire-extinguishing barrier layer and a waterproof and fireproof layer which are sequentially arranged from inside to outside, a heat transfer layer, a cooling explosion-proof layer, a fire-extinguishing barrier layer and a waterproof and fireproof layer which are sequentially arranged from inside to outside form a fire-extinguishing flame-retardant explosion-proof battery storage bag composite structure; the heat transfer layer is used for conducting heat generated by batteries in the battery storage bag to the cooling explosion-proof layer; the cooling explosion-proof layer is used for cooling and extinguishing the fire of the batteries in the battery storage bag; the fire extinguishing barrier layer is used for extinguishing and blocking fire of batteries in the battery storage bag; the waterproof and fireproof layer is used for preventing external fire sources and water sources from invading the batteries in the battery storage bag. The explosion-proof battery can prevent internal fire sources from leaking out, can also prevent external fire sources, water sources and the like from invading, can be applied to various protection products needing to be used for charging batteries, is good in fire extinguishing, flame-retardant and explosion-proof performance, guarantees personnel safety, and reduces property loss.

Description

Technical Field

[0001] The utility model relates to a fire-extinguishing, flame-retardant and explosion-proof battery storage bag composite structure and the battery storage bag, belonging to the technical field of safety protection. Background Art

[0002] At present, the new type of fire-extinguishing flame-retardant explosion-proof battery storage bag is a protective bag used when charging batteries. Conventional explosion-proof bags / explosion-proof boxes are used for large batteries such as automobiles. Among them, the battery storage bag and the battery are generally placed in a sealed shell. If a fire occurs, the fire extinguishing device inside the battery storage bag automatically releases the agent to cool down the inside of the battery and extinguish the open fire.

[0003] At present, intelligence has gradually penetrated into our lives. Smart home appliances such as massage instruments, vacuum cleaners, flashlights, electric scooters, electric toys, power banks, mobile phones, tablet computers, model airplanes, cameras and other daily electrical appliances have two charging methods. One is to remove the battery from the device and charge the battery directly, or to charge the device directly. Although the charge of such daily small electrical products is small, it is basically impossible to extinguish the fire immediately after the battery catches fire, and it will quickly release a large amount of toxic smoke. The fire can reach more than 500℃ and there is a risk of explosion at any time. If other electrical appliances or flame retardants are ignited, the danger will be unpredictable.

[0004] At present, although the research on this type of explosion-proof battery storage bag has a variety of shapes, the protection is still limited to materials such as liquid silicone glass fiber cloth, flame retardant non-woven fabric, and high temperature resistant cloth, and the protection structure is relatively simple. Nowadays, with the further study of fire-retardant materials and the internal structure of battery fires, hydrogel materials have also become well known. As a new type of fire extinguishing and cooling material, it has been widely used in the fields of building fire protection and industrial safety. It is necessary to develop a fire extinguishing, flame retardant and explosion-proof battery storage bag composite structure and battery storage bag. Utility Model Content

[0005] To this end, the utility model provides a fire extinguishing, flame retardant and explosion-proof battery storage bag composite structure and a battery storage bag to solve the problems of poor fire prevention effect and safety of traditional technologies and difficulty in effectively applying them to daily small electrical products.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fire-extinguishing flame-retardant explosion-proof battery storage package composite structure, comprising a heat transfer layer, a cooling explosion-proof layer, a fire-extinguishing barrier layer and a waterproof fire-proof layer arranged in sequence from the inside to the outside, and a heat transfer layer, a cooling explosion-proof layer, a fire-extinguishing barrier layer and a waterproof fire-proof layer arranged in sequence from the inside to the outside form a fire-extinguishing flame-retardant explosion-proof battery storage package composite structure;

[0007] The heat transfer layer is used to conduct the heat generated by the batteries inside the battery storage pack to the cooling and explosion-proof layer;

[0008] The temperature reduction and explosion-proof layer is used to reduce the temperature and extinguish the fire of the batteries inside the battery storage package;

[0009] The fire extinguishing barrier layer is used to extinguish fire and block fire of batteries inside the battery storage package; the waterproof and fireproof layer is used to prevent external fire sources and water sources from invading the batteries inside the battery storage package.

[0010] As a preferred solution for the composite structure of the fire-extinguishing, flame-retardant and explosion-proof battery storage package, the heat transfer layer adopts a composite metal aluminum foil cloth, and the heat transfer layer has glass fiber and metal aluminum foil of a specified thickness.

[0011] As a preferred solution for the composite structure of the fire-extinguishing, flame-retardant and explosion-proof battery storage package, the cooling and explosion-proof layer includes a cooling sublayer and an explosion-proof sublayer; the cooling sublayer includes a first rubber bag, the first rubber bag is provided with glass fiber, and both sides of the glass fiber are filled with hydrogel;

[0012] The explosion-proof sublayer includes a second rubber bag and an explosion-proof and flame-retardant liquid filled in the second rubber bag.

[0013] As a preferred solution for the composite structure of the fire-extinguishing, flame-retardant and explosion-proof battery storage bag, the first rubber bag and the second rubber bag are both made of thermoplastic polyurethane rubber; the explosion-proof and flame-retardant liquid uses a phosphorus-nitrogen-based environmentally friendly flame retardant.

[0014] As a preferred solution for the composite structure of the fire-extinguishing, flame-retardant and explosion-proof battery storage package, the fire-extinguishing barrier layer adopts a silica aerogel felt of a specified thickness.

[0015] As a preferred solution for the composite structure of the fire-extinguishing, flame-retardant and explosion-proof battery storage bag, the waterproof and fireproof layer adopts silicone glass fiber sealing cloth, and the silicone glass fiber sealing cloth is composed of glass fiber cloth with double-sided coating of flame-retardant and waterproof silicone.

[0016] As a preferred solution for the composite structure of the fire-extinguishing, flame-retardant and explosion-proof battery storage package, the edges of the heat transfer layer and the waterproof and fireproof layer are sewn together to wrap the cooling and explosion-proof layer and the fire-extinguishing barrier layer.

[0017] As a preferred solution for the composite structure of the fire-extinguishing, flame-retardant and explosion-proof battery storage package, the heat transfer layer, the cooling and explosion-proof layer, the fire-extinguishing barrier layer and the waterproof and fire-proof layer are all bonded to adjacent layers by a flame-retardant adhesive.

[0018] The utility model also provides a fire extinguishing, flame retardant and explosion-proof battery storage bag, which is made of the above-mentioned fire extinguishing, flame retardant and explosion-proof battery storage bag composite structure.

[0019] The utility model has the following advantages: it includes a heat transfer layer, a cooling and explosion-proof layer, a fire extinguishing barrier layer and a waterproof and fireproof layer arranged in sequence from the inside to the outside, and the heat transfer layer, the cooling and explosion-proof layer, the fire extinguishing barrier layer and the waterproof and fireproof layer arranged in sequence from the inside to the outside form a composite structure of a fire-extinguishing, flame-retardant and explosion-proof battery storage bag; the heat transfer layer is used to conduct the heat generated by the battery inside the battery storage bag to the cooling and explosion-proof layer; the cooling and explosion-proof layer is used to cool down and extinguish the fire of the battery inside the battery storage bag; the fire extinguishing barrier layer is used to extinguish and block the fire of the battery inside the battery storage bag; the waterproof and fireproof layer is used to prevent external fire sources and water sources from invading the battery inside the battery storage bag. The utility model can protect against a certain amount of heat and impact, and can effectively isolate oxygen to prevent continuous explosion and combustion when the battery explodes. It can not only protect the internal fire source from leaking, but also protect against external fire sources, water sources, etc. It can be applied to various protective products that need to be used for battery charging, and has excellent fire extinguishing, flame retardant and explosion-proof performances, ensuring personnel safety and reducing property losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0022] Figure 1 A schematic diagram of the composite structure of a fire-extinguishing, flame-retardant and explosion-proof battery storage bag provided in an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of a cooling and explosion-proof layer in a composite structure of a fire-extinguishing, flame-retardant and explosion-proof battery storage bag provided in an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of a cooling sublayer in a composite structure of a fire-extinguishing, flame-retardant, and explosion-proof battery storage package provided in an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of an explosion-proof sublayer in a composite structure of a fire-extinguishing, flame-retardant and explosion-proof battery storage bag provided in an embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of a fire extinguishing, flame retardant and explosion-proof battery storage bag provided in an embodiment of the utility model.

[0027] In the figure, 1. heat transfer layer; 2. cooling and explosion-proof layer; 3. fire extinguishing barrier layer; 4. waterproof and fireproof layer; 5. cooling sublayer; 6. explosion-proof sublayer; 7. first rubber bag; 8. second rubber bag. DETAILED DESCRIPTION

[0028] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1 The embodiment of the utility model provides a fire-extinguishing, flame-retardant and explosion-proof battery storage bag composite structure, including a heat transfer layer 1, a cooling and explosion-proof layer 2, a fire-extinguishing barrier layer 3 and a waterproof and fire-proof layer 4 arranged in sequence from the inside to the outside, and the heat transfer layer 1, the cooling and explosion-proof layer 2, the fire-extinguishing barrier layer 3 and the waterproof and fire-proof layer 4 arranged in sequence from the inside to the outside form a fire-extinguishing, flame-retardant and explosion-proof battery storage bag composite structure;

[0030] The heat transfer layer 1 is used to conduct the heat generated by the batteries inside the battery storage pack to the cooling and explosion-proof layer 2;

[0031] The temperature-reducing and explosion-proof layer 2 is used to cool down and extinguish the fire of the battery inside the battery storage bag;

[0032] The fire extinguishing barrier layer 3 is used to extinguish fires of batteries inside the battery storage package; the waterproof and fireproof layer 4 is used to prevent external fire sources and water sources from invading the batteries inside the battery storage package.

[0033] In this embodiment, the first layer of protection of the composite structure of the fire extinguishing, flame retardant and explosion-proof battery storage bag is a heat transfer layer 1. Since battery charging will inevitably cause battery heating and other phenomena, during the battery charging process, excessive heat can be directly conducted out through the heat transfer layer 1 to avoid overheating reaction inside the battery; the second layer of protection of the composite structure of the fire extinguishing, flame retardant and explosion-proof battery storage bag is a cooling and explosion-proof layer 2, which is composed of hydrogel and explosion-proof and flame retardant liquid, wherein the hydrogel layer can mainly play a cooling role, but if a fire occurs inside the battery due to other reasons, the fire source directly burns the hydrogel, and the hydrogel will react internally, and with the high temperature, it will turn into water, which plays a role in extinguishing the fire. If the fire continues to spread, the hydrogel cannot extinguish the fire, and burns the explosion-proof and flame retardant liquid, the water will instantly pour out and extinguish the fire source, which can serve as the second layer of protection for fire extinguishing; the third layer of protection is a fire extinguishing barrier layer 3. If the fire is really too large, the explosion-proof and flame retardant liquid cannot extinguish the fire of the battery, and the fire will burn the fireproof aerogel felt. The fourth layer of protection can be used as the last layer of waterproof and fireproof layer 4, as the last line of defense against fire sources, and also as a protection against external fire sources and water sources. This structure can be applied to various protective products that need to be used for battery charging, and can be converted to the corresponding size according to the size of the charged electrical appliance. The product is easy to use, light in weight, and has good fire extinguishing, flame retardant and explosion-proof performance.

[0034] In a possible embodiment, the heat transfer layer 1 is a composite metal aluminum foil cloth, and the heat transfer layer 1 has glass fiber and metal aluminum foil of a specified thickness. Specifically, the heat transfer layer 1 is a composite metal aluminum foil cloth with a thickness of 1 mm, and the heat transfer layer 1 is composed of a glass fiber backing metal aluminum foil, wherein the thickness of the glass fiber is 0.7 mm and the surface density is 450 g / m 2 , the thickness of the metal aluminum foil is 0.3mm.

[0035] See also Figure 2 , Figure 3 and Figure 4 In a possible embodiment, the cooling and explosion-proof layer 2 includes a cooling sublayer 5 and an explosion-proof sublayer 6; the cooling sublayer 5 includes a first rubber bag 7, glass fiber is arranged inside the first rubber bag 7, and hydrogel is filled on both sides of the glass fiber; the explosion-proof sublayer 6 includes a second rubber bag 8 and an explosion-proof flame retardant liquid filled inside the second rubber bag 8. The first rubber bag 7 and the second rubber bag 8 are both made of thermoplastic polyurethane rubber; the explosion-proof flame retardant liquid uses a phosphorus nitrogen-based environmentally friendly flame retardant.

[0036] Specifically, the cooling sublayer 5 is composed of solid hydrogel, glass fiber, and the first rubber bag 7. The thickness of the glass fiber is 0.1 mm, and the surface density is 100 g / m 2The first rubber bag 7 is a transparent soft rubber layer with a thickness of 0.1 mm; the hydrogel is a solid colloidal gel with a thickness of 1 mm. The explosion-proof sublayer 6 is composed of the second rubber bag 8 and the explosion-proof flame retardant liquid. Among them, TPU is a transparent soft rubber layer with a thickness of 0.1 mm, and the main component of the explosion-proof flame retardant liquid is a phosphorus-nitrogen environmentally friendly flame retardant.

[0037] Among them, hydrogel material is a polymer material with very strong water absorption and water retention. When hydrogel absorbs water, it will form a gel-like substance, which not only has a fire extinguishing effect, but also has a strong cooling effect. When the battery generates a certain amount of heat, it can quickly take away the heat to avoid fire caused by heat.

[0038] Among them, the main component of explosion-proof flame retardant liquid is phosphorus nitrogen environmentally friendly flame retardant, which has obvious heat insulation and flame retardant effect, and burns for a long time without open flame and smoke. It can not only prevent flaming combustion, but also suppress smoldering, has low hygroscopicity, good heat resistance, and excellent flame retardant effect. It can be loaded into TPU material to be used as explosion-proof flame retardant bag.

[0039] In a possible embodiment, the fire extinguishing barrier layer 3 uses a silica aerogel felt with a specified thickness of 1 mm. Silica aerogel felt is a flexible material synthesized by a special process using silica aerogel as the main material and compounding it in reinforcing fibers, such as glass fibers and pre-oxidized fibers. Aerogel felt is relatively hydrophobic and can effectively prevent moisture from entering the interior of the equipment. At the same time, it has a fireproof performance of B1 to A, and the unique three-dimensional network structure of aerogel avoids the phenomenon that other thermal insulation materials have a significant decrease in thermal insulation effect due to sintering deformation, sedimentation, etc. during long-term high-temperature use.

[0040] In a possible embodiment, the waterproof and fireproof layer 4 is made of silicone glass fiber sealing cloth, which is composed of glass fiber cloth with double-sided coating of flame-retardant waterproof silicone. The surface density of the waterproof and fireproof layer 4 is 120g / m 2 Glass fiber cloth, double-sided coating of flame retardant and waterproof silicone, thickness is 0.31mm.

[0041] In a possible embodiment, the edges of the heat transfer layer 1 and the waterproof and fireproof layer 4 are sewn together to wrap the cooling and explosion-proof layer 2 and the fire extinguishing barrier layer 3; the adjacent layers of the heat transfer layer 1, the cooling and explosion-proof layer 2, the fire extinguishing barrier layer 3 and the waterproof and fireproof layer 4 are bonded by a flame retardant adhesive.

[0042] Specifically, the heat transfer layer 1 and the fireproof and waterproof layer are connected by sewing, and the cooling and explosion-proof layer 2 and the fire-extinguishing barrier layer 3 are wrapped inside. And the four-layer structure is bonded together by a flame-retardant adhesive to form an overall composite structure without layer falling or misalignment.

[0043] The embodiment of the utility model also provides a fire extinguishing, flame retardant and explosion-proof battery storage bag, which is made of the above-mentioned fire extinguishing, flame retardant and explosion-proof battery storage bag composite structure.

[0044] See also Figure 5 Specifically, the overall structure of the explosion-proof battery storage bag is a rectangular block, 40cm long, 25cm wide, and 35cm high. The bottom and the four sides are fixed by sewing, the top and the four sides are fixed by sewing 40cm, and the rest are connected by zippers for easy opening and closing. In order to adjust the size of the entire explosion-proof battery storage bag, a 10cm retractable range is designed at the top, which is achieved by a circle of zippers and a circle of non-fully covered sticky hooks. This battery storage bag can be scaled to a certain extent according to the size of the charged appliance. If the charged appliance is small, the sticky hooks are adjusted to the minimum for connection.

[0045] The battery storage bag was subjected to a needle penetration test on a 2Ah battery at room temperature with the battery state of charge adjusted to SOC = 100%. During the test, the battery storage bag only produced smoke, but no sparks were ejected from the battery storage bag. The structure was also subjected to a flame retardant test, and the specific test results are as follows:

[0046] Table 1 Flame retardant performance test results

[0047] Inspection items Technical (standard) requirements Sample No. Test results determination Flame retardant performance test GB / T2408-2021 1 V-0 qualified

[0048] It can be seen that the battery storage bag of this embodiment can provide certain protection against battery explosion and ensure personnel safety; the composite structure of the battery storage bag can also reduce the scope of the fire source and reduce property losses.

[0049] In summary, the utility model includes a heat transfer layer 1, a cooling and explosion-proof layer 2, a fire extinguishing barrier layer 3 and a waterproof and fireproof layer 4 which are arranged in sequence from the inside to the outside. The heat transfer layer 1, the cooling and explosion-proof layer 2, the fire extinguishing barrier layer 3 and the waterproof and fireproof layer 4 which are arranged in sequence from the inside to the outside form a composite structure of a fire extinguishing, flame retardant and explosion-proof battery storage bag. The first layer of protection of the composite structure of the fire extinguishing, flame retardant and explosion-proof battery storage bag is the heat transfer layer 1. Since battery charging will inevitably cause battery heating and other phenomena, during the battery charging process, excessive heat can be directly conducted away through the heat transfer layer 1 to avoid overheating reaction inside the battery. The fire extinguishing, flame retardant and explosion-proof battery storage bag has a heat transfer layer 1, which is a heat transfer layer 1. The heat transfer layer 1 is ... The second layer of protection of the composite structure is a cooling and explosion-proof layer 2, which is composed of hydrogel and explosion-proof flame retardant liquid. The hydrogel layer can mainly play a cooling role. However, if a fire occurs inside the battery due to other reasons, the fire source directly burns the hydrogel, and the hydrogel will react internally. With the high temperature, it turns into water and plays a role in extinguishing the fire. If the fire continues to spread, the hydrogel cannot put out the fire, and the explosion-proof flame retardant liquid is burned. The water will pour out instantly and extinguish the fire source. This can be used as the second layer of protection for fire extinguishing; the third layer of protection is a fire extinguishing barrier layer 3. If the fire is really too big, the explosion-proof flame retardant liquid cannot put out the fire of the battery, and the fire will burn the fireproof aerogel felt. The fourth layer of protection can be used as the last layer of waterproof and fireproof layer 4, as the last line of defense against fire sources, and also as a protection against the invasion of external fire sources and water sources. This structure can be applied to various protective products that need to be used for battery charging, and can be converted to the corresponding size according to the size of the charged electrical appliance. The product is easy to use, light in weight, and has good fire extinguishing, flame retardant and explosion-proof properties.

[0050] The above is a relatively specific and detailed description of the utility model through general description and specific embodiments. It should be understood that based on the technical concept of the utility model, some conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the utility model, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the utility model.

Claims

1. A fire-extinguishing, flame-retardant and explosion-proof battery storage package composite structure, characterized in that: The invention comprises a heat transfer layer (1), a cooling and explosion-proof layer (2), a fire extinguishing barrier layer (3) and a waterproof and fireproof layer (4) which are arranged in sequence from the inside to the outside, and the heat transfer layer (1), the cooling and explosion-proof layer (2), the fire extinguishing barrier layer (3) and the waterproof and fireproof layer (4) which are arranged in sequence from the inside to the outside form a fire extinguishing, flame retardant and explosion-proof battery storage bag composite structure; The heat transfer layer (1) is used to conduct the heat generated by the batteries inside the battery storage package to the cooling and explosion-proof layer (2); The temperature-reducing and explosion-proof layer (2) is used to cool down and extinguish a fire in a battery inside the battery storage bag; The fire extinguishing barrier layer (3) is used to extinguish fire and block fires of batteries inside the battery storage package; the waterproof and fireproof layer (4) is used to prevent external fire sources and water sources from invading the batteries inside the battery storage package.

2. The fire-extinguishing, flame-retardant and explosion-proof battery storage bag composite structure according to claim 1, characterized in that: The heat transfer layer (1) is made of composite metal aluminum foil cloth, and the heat transfer layer (1) has glass fiber and metal aluminum foil of specified thickness.

3. The fire-extinguishing, flame-retardant and explosion-proof battery storage bag composite structure according to claim 1, characterized in that: The temperature-reducing and explosion-proof layer (2) comprises a temperature-reducing sublayer (5) and an explosion-proof sublayer (6); the temperature-reducing sublayer (5) comprises a first rubber bag (7), glass fibers are arranged inside the first rubber bag (7), and hydrogel is filled on both sides of the glass fibers; The explosion-proof sublayer (6) comprises a second rubber bag (8) and an explosion-proof and flame-retardant liquid filled inside the second rubber bag (8).

4. The fire-extinguishing, flame-retardant and explosion-proof battery storage bag composite structure according to claim 3, characterized in that: The first rubber bag (7) and the second rubber bag (8) are both made of thermoplastic polyurethane rubber; the explosion-proof flame retardant liquid is made of phosphorus-nitrogen environmentally friendly flame retardant.

5. The fire-extinguishing, flame-retardant and explosion-proof battery storage bag composite structure according to claim 1, characterized in that: The fire extinguishing barrier layer (3) is made of silica aerogel felt with a specified thickness.

6. The fire-retardant and explosion-proof battery storage bag composite structure according to claim 1, characterized in that: The waterproof and fireproof layer (4) is made of silicone glass fiber sealing cloth, which is composed of glass fiber cloth with double-sided coating of flame-retardant and waterproof silicone.

7. The fire-extinguishing, flame-retardant and explosion-proof battery storage bag composite structure according to claim 1, characterized in that: The edges of the heat transfer layer (1) and the waterproof and fireproof layer (4) are sewn together to wrap the cooling and explosion-proof layer (2) and the fire-extinguishing barrier layer (3).

8. The fire-extinguishing, flame-retardant and explosion-proof battery storage package composite structure according to claim 1, characterized in that: The heat transfer layer (1), the temperature reduction and explosion-proof layer (2), the fire extinguishing barrier layer (3) and the waterproof and fireproof layer (4) are all bonded to adjacent layers by means of a flame retardant adhesive.

9. A fire-retardant and explosion-proof battery storage bag, characterized in that: The fire-extinguishing, flame-retardant and explosion-proof battery storage bag composite structure is made of any one of claims 1 to 8.

Images