Heat insulation cushion pad
By setting upper and lower flame-retardant layers and a heat-insulating buffer layer in the heat-insulating buffer pad, and using a vacuum cold-pressing composite process that combines flame-retardant double-sided adhesive with PET substrate, the problem of poor flame-retardant performance of the heat-insulating buffer pad is solved, achieving high-efficiency flame-retardant performance and simplified production, making it suitable for thermal runaway protection in the field of new energy batteries.
Patent Information
- Application Number
- CN202423249648.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing heat insulation cushioning pads have poor flame retardant properties, which cannot meet the high-end requirements of the new energy battery field, and the production process is complex, making it difficult to meet the UL94-V0 flame retardant requirements.
It adopts a structure of upper flame-retardant layer, lower flame-retardant layer and heat insulation buffer layer. It is formed by vacuum bonding process and flame-retardant double-sided adhesive is used to bond with PET substrate to form a sealed space containing aerogel felt to prevent aerogel felt breakage and powder leakage. Halogen-free phosphorus and nitrogen flame retardants and acrylic adhesives are used to meet UL94-V0 flame retardant requirements.
It improves the flame retardant properties of the thermal insulation buffer pad, simplifies the production process, meets the design requirements of battery thermal runaway protection structure, achieves good adhesion and flame retardant properties, and is suitable for industrial applications.
Smart Images
Figure CN223950953U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of thermal -insulation material, especially thermal -insulation cushion. BACKGROUND
[0002] With the sustained high-speed development of new energy vehicles, the battery thermal runaway problem also caused thereby is also more and more cause everybody to pay attention, it can cause fire and explosion, and the direct threat to personnel and property. Since the battery is usually embedded in various devices or systems, thermal runaway will not only cause equipment damage, but also may cause harm to the surrounding environment and personnel.
[0003] In addition, thermal runaway also leads to battery life and performance decline. The battery works under high temperature and abnormal conditions will accelerate its own aging process, shorten the service life. Thermal runaway can also cause damage to the internal structure and materials of the battery, thereby affecting the performance and stability of the battery.
[0004] In order to effectively control the battery thermal runaway, a thermal insulation pad is arranged in the structure of the battery, and the existing thermal insulation pad includes aerogel, shaped silicone rubber frame and acrylic double-sided tape.
[0005] Among them, aerogel is the solid material with the lowest thermal conductivity known at present, its special structure makes it have the superior performance of low thermal conductivity, waterproof and fireproof, electrical insulation, green environmental protection, good thermal insulation performance, etc. It is the best choice for thermal insulation and cushioning, insulation materials in the battery industry.
[0006] At present, when the conventional thermal insulation cushion is produced and manufactured, the aerogel is first placed in the shaped silicone rubber frame, and then the hot film is bonded with the silicone rubber frame by using a pressing machine in a high temperature heating mode. Secondly, the silicone rubber frame aerogel pad is formed by slitting, and finally the acrylic double-sided tape is manually attached to both sides of the silicone rubber frame aerogel pad.
[0007] However, the acrylic double-sided tape is a combustible material, so that the flame retardant performance of the thermal insulation cushion is poor, and the product cannot meet the UL94-V0 flame retardant requirement. Such status quality is difficult to fully meet the precision and thermal runaway protection structure high-end requirements in the field of new energy batteries. UTILITY MODEL CONTENTS
[0008] The utility model aims at least to solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a thermal insulation cushion, improves the flame retardancy of the thermal insulation cushion, so that the thermal insulation cushion meets the flame retardant requirement of the battery structure, and the production process of the thermal insulation cushion of the structure is simpler.
[0009] The utility model discloses an insulating cushion, including upper fire -retardant layer, lower fire -retardant layer and set up between the upper fire -retardant layer and the lower fire -retardant layer's insulating cushion layer, the upper fire -retardant layer, the insulating cushion layer and the lower fire -retardant layer are through vacuum lamination molding, the upper fire -retardant layer and the lower fire -retardant layer all include PET base material, set up the fire -retardant double -sided adhesive tape of PET base material two sides, the fire -retardant double -sided adhesive tape is the adhesive tape with fire -retardant and acrylic adhesive, the insulating cushion layer includes silica gel frame and aerogel felt, and the aerogel felt is arranged in the silica gel frame.
[0010] The utility model discloses an insulating cushion has at least the following beneficial effects:
[0011] The utility model discloses an insulating cushion, including upper fire -retardant layer, lower fire -retardant layer and set up between the upper fire -retardant layer and the lower fire -retardant layer's insulating cushion layer, the upper fire -retardant layer, the insulating cushion layer and the lower fire -retardant layer are through vacuum lamination molding, the upper fire -retardant layer and the lower fire -retardant layer all include PET base material, set up the fire -retardant double -sided adhesive tape of PET base material two sides, the fire -retardant double -sided adhesive tape is the adhesive tape with fire -retardant and acrylic adhesive, the insulating cushion layer includes silica gel frame and aerogel felt, and the aerogel felt is arranged in the silica gel frame.
[0012] The utility model discloses an insulating cushion, and the fire -retardant is halogen -free phosphorus nitrogen class.
[0013] The utility model discloses an insulating cushion, and the aerogel felt is the nanometer aerogel and inorganic fiber material composite and become a kind of heat -insulating material.
[0014] The utility model discloses an insulating cushion, and the base material used by the nanometer aerogel is one of ceramic fiber, glass fiber or pre -oxygen silk fiber.
[0015] The utility model discloses an insulating cushion, and the density of the aerogel felt is 300-320kg / m3.
[0016] The utility model discloses an insulating cushion, and the thickness of the aerogel felt is 3.0mm.
[0017] The utility model discloses an insulating cushion, and the silica gel frame is silicone rubber material, and the two sides of the silica gel frame are respectively provided with PET sheet.
[0018] The thickness of the silica gel frame body is 3.2±0.2mm.
[0019] According to the heat insulation cushion provided by the embodiment of the present application, the upper fire-retardant layer and the lower fire-retardant layer are provided with release paper away from the side of the heat insulation cushion layer.
[0020] According to the heat insulation cushion provided by the embodiment of the present application, the thickness of the fire-retardant layer and the lower fire-retardant layer is 0.16mm.
[0021] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.
[0023] Figure 1 The structure diagram of the heat insulation cushion of the embodiment of the present application is shown in the figure.
[0024] Figure 2 The side view of the heat insulation cushion of the embodiment of the present application is shown in the figure.
[0025] Reference signs: 100-upper fire-retardant layer, 110-lower fire-retardant layer, 120-PET base material, 130-fire-retardant double-sided adhesive, 140-heat insulation cushion layer, 150-silica gel frame body, 160-aerogel felt, 170-release paper, 180-PET sheet. DETAILED DESCRIPTION
[0026] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0027] In the description of the utility model, it needs to understand that, the direction description such as the direction or positional relation indicated by up, down, front, back, left, right etc. for the direction or positional relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and is not to indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as a limitation on the utility model.
[0028] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than etc. are understood as not including the number, above, below, within etc. are understood as including the number.If there is a description to the first and second, this is only for the purpose of distinguishing technical features, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0029] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the term "installation, connection and connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0030] A kind of heat-insulating cushion according to the embodiment of the utility model is described below with reference to the drawings.
[0031] With reference to Figure 1 The utility model aims at providing a kind of heat-insulating cushion embodiment.
[0032] The heat-insulating cushion of the embodiment of the utility model, including upper fire-retardant layer 100, lower fire-retardant layer 110 and the heat-insulating buffer layer 140 between upper fire-retardant layer 100 and lower fire-retardant layer 110, upper fire-retardant layer 100, heat-insulating buffer layer 140 and lower fire-retardant layer 110 are formed by vacuumizing and adhering, upper fire-retardant layer 100 and lower fire-retardant layer 110 all include PET base material 120, fire-retardant double-sided adhesive tape 130 set on the two sides of PET base material 120, fire-retardant double-sided adhesive tape 130 is adhesive tape with fire retardant and acrylic adhesive, heat-insulating buffer layer 140 includes silica gel frame body 150 and aerogel felt 160, aerogel felt 160 is set in silica gel frame body 150.
[0033] It can be understood that the utility model discloses a upper fire -retardant layer 100, lower fire -retardant layer 110 and thermal -insulated buffer layer 140 are set up, utilize the fire -retardant double -sided adhesive tape 130 of upper fire -retardant layer 100, lower fire -retardant layer 110 and thermal -insulated buffer layer 140 two face adhesion, then adopt through vacuum cold pressing composite process edge sealing, under certain pressure, under the vacuum, make aerogel felt 160 be in the airtight space formed by silica gel frame body 150, upper fire -retardant layer 100 and lower fire -retardant layer 110, effectively prevent the fracture and powder leakage of aerogel felt 160, and, by making fire -retardant and acrylic adhesive coat in adhesive tape, can make fire -retardant double -sided adhesive tape 130 with PET base material 120 have good bonding effect, also can make fire -retardant double -sided adhesive tape 130 meet UL94-V0 fire -retardant requirement, avoid using traditional combustible acrylic double -sided adhesive tape, improve the fire -retardant property of upper fire -retardant layer 100, lower fire -retardant layer 110, make the thermal -insulated buffer pad of the utility model satisfy the design requirement of battery thermal runaway protection structure.
[0034] In some specific embodiments of the utility model, the fire retardant is halogen-free phosphorus-nitrogen type, the fire retardant and the acrylic adhesive are coated on the adhesive tape, and the fire -retardant double -sided adhesive tape 130 meeting the UL94-V0 fire -retardant requirement can be obtained, so that the entire thermal -insulated buffer pad meets the UL94-V0 fire -retardant requirement.
[0035] In some embodiments of the utility model, the aerogel felt 160 is a kind of thermal -insulated material composed of nano aerogel and inorganic fiber material.
[0036] It should be noted that the thermal -insulated material composed of nano aerogel and inorganic fiber material has a fire -retardant rating of UL94-V0 and can withstand 1000 DEG C high temperature.
[0037] In addition, aerogel is currently known as the solid material with the lowest thermal conductivity, and its special structure makes the high-temperature-resistant aerogel felt 160 have the superior properties of low thermal conductivity, waterproof and fireproof, electrical insulation, green environmental protection and good thermal insulation performance.
[0038] In some embodiments of the utility model, the base material used by the nano aerogel is one of ceramic fiber, glass fiber or pre-oxidized fiber.
[0039] Preferably, the base material used by the nano aerogel is ceramic fiber, which shows superior performance compared to glass fiber and pre-oxidized fiber. This is mainly because ceramic fiber has high temperature resistance and low thermal conductivity, making it have better heat preservation and insulation effect in high temperature environment.
[0040] In some specific embodiments of the utility model, the density of aerogel blanket 160 is 300-320kg / m3, the thickness of aerogel blanket 160 is 3.0mm, it needs to be explained that the density of aerogel blanket 160 can be set according to the need and the thickness of aerogel blanket 160 to meet the need of use.
[0041] In some embodiments of the utility model, refer to Figure 2 Silica gel frame body 150 is silica rubber material, and both sides of silica gel frame body 150 are provided with PET sheet 180.
[0042] It can be understood that silica gel frame body 150 is silica rubber material, and the resilience of silica rubber material is good.
[0043] It needs to be explained that before traditional acrylic double-sided adhesive and silica gel frame are bonded, special silica gel treating agent needs to be coated on the silica gel frame, and after the silica gel treating agent is dried, the drying time is more than 30 minutes, and then the acrylic double-sided adhesive and the silica gel frame can be well bonded, and the PET sheet 180 is set in the embodiment, the thickness of PET sheet 180 is 0.15 microns, and PET sheet 180 is pasted on both sides of silica gel frame body 150, which can be directly bonded with the flame-retardant double-sided adhesive 130 at room temperature, so that the silica gel frame body 150 is bonded with the upper flame-retardant layer 100 and the lower flame-retardant layer 110 through PET sheet 180, and the bonding strength between the silica gel frame body 150 and the flame-retardant double-sided adhesive 130 is tested many times, and the average value is 9.44N / CM.
[0044] In addition, the conventional process of heat setting film + silica gel frame high-temperature bonding process is omitted, and raw materials, heating electricity and processing time are saved.
[0045] In some embodiments of the utility model, the thickness of silica gel frame body 150 is 3.2±0.2mm, and it needs to be explained that the thickness of silica gel frame body 150 can be set according to the need to meet the need of use.
[0046] In some embodiments of the utility model, the upper flame-retardant layer 100 and the lower flame-retardant layer 110 are provided with release paper 170 away from the heat insulation buffer layer 140.
[0047] It can be understood that after the release paper 170 is torn, the heat insulation buffer pad can be attached to the internal structure of the battery.
[0048] In some embodiments of the utility model, the thickness of the upper flame-retardant layer 100 and the lower flame-retardant layer 110 is 0.16mm, and it needs to be explained that the thickness of the upper flame-retardant layer 100 and the lower flame-retardant layer 110 can be set according to the need to meet the need of use.
[0049] Therefore, the production process of the heat insulation cushion of the embodiment: the heat insulation cushion layer 140 is adhered on both sides by the flame-retardant double-sided adhesive tape 130 of the upper flame-retardant layer 100 and the lower flame-retardant layer 110, and then the edge is sealed by the vacuum cold pressing composite process, so that the heat insulation cushion layer 140 is in the closed space formed by the upper flame-retardant layer 100 and the lower flame-retardant layer 110 under a certain pressure, the vacuum time is 10-20s, the pressing time is 10-20s, and the pressure is 1-2.5MPA, so that the upper flame-retardant layer 100, the heat insulation cushion layer 140 and the lower flame-retardant layer 110 are best adhered, and the appearance and performance are best, so that the integrated structure heat insulation cushion is packaged.
[0050] After forming, the special cutter is used to cut and separate into single finished products, so that the consistency of product size and edge width is ensured, the process is simple, the automatic assembly line production can be used, the production process is reliable, and the product performance is stable.
[0051] By selecting different aerogel felt 160, PET flame-retardant double-sided adhesive tape 130, size, thickness and silicone rubber hardness, size, thickness combination, the requirements of different fireproof and heat insulation grades and different thickness heat insulation cushions can be met, and the industrial application is very suitable.
[0052] When the heat insulation cushion is assembled in the battery, the release paper 170 on both sides is torn off, and the heat insulation cushion is placed between the battery cells during the assembly process of the square shell type battery cell by the automatic equipment or manually, a suitable pre-tightening force is generated by the compression of the heat insulation cushion, and the heat insulation cushion structure is formed between the square shell type battery cells.
[0053] In the description of the specification, the description of the terms "one embodiment, some embodiments, illustrative embodiment, example, specific example or some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner without departing from the purpose of the utility model.
[0054] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge range of ordinary skilled persons in the art without departing from the purpose of the utility model.
Claims
1. An insulating cushion, characterized in that, The fire-retardant layer includes an upper fire-retardant layer (100), a lower fire-retardant layer (110), and a heat-insulating buffer layer (140) arranged between the upper fire-retardant layer (100) and the lower fire-retardant layer (110), the upper fire-retardant layer (100), the heat-insulating buffer layer (140), and the lower fire-retardant layer (110) are formed by vacuumizing and adhering, the upper fire-retardant layer (100) and the lower fire-retardant layer (110) each include a PET substrate (120) and a fire-retardant double-sided adhesive tape (130) arranged on both sides of the PET substrate (120), the fire-retardant double-sided adhesive tape (130) is an adhesive tape with a fire retardant and an acrylic adhesive, the heat-insulating buffer layer (140) includes a silica gel frame (150) and an aerogel felt (160), and the aerogel felt (160) is arranged in the silica gel frame (150).
2. A thermal insulating cushion according to claim 1, wherein The fire retardant is a halogen-free phosphorus-nitrogen type.
3. A thermal insulating cushion according to claim 1, wherein The aerogel felt (160) is a kind of heat-insulating material composed of nano-aerogel and inorganic fiber material.
4. A thermal insulating cushion according to claim 3, wherein The substrate used by the nano-aerogel is one of ceramic fiber, glass fiber, or pre-oxidized fiber.
5. The insulating cushioning mattress according to claim 1, wherein The density of the aerogel felt (160) is 300-320 kg / m3.
6. The insulating cushioning mattress according to claim 1, wherein The thickness of the aerogel felt (160) is 3.0 mm.
7. The insulating cushioning mattress according to claim 1, wherein The silica gel frame (150) is made of silicone rubber material, and the silica gel frame (150) is provided with a PET sheet (180) on each side.
8. The insulating cushioning mattress according to claim 1, wherein, The thickness of the silica gel frame (150) is 3.2±0.2 mm.
9. The insulating cushioning mattress according to claim 1, wherein, The upper fire-retardant layer (100) and the lower fire-retardant layer (110) are provided with release paper (170) on the side away from the heat-insulating buffer layer (140).
10. The insulating cushioning mattress according to claim 1, wherein, The thickness of the fire-retardant layer and the lower fire-retardant layer (110) is 0.16 mm.