Electrically-driven automobile sound insulation pad and electrically-driven automobile

Abstract

The utility model provides an electrically-driven automobile sound insulation pad and an electrically-driven automobile. The electrically-driven automobile sound insulation pad comprises an EPDM skin, an adhesive film and two-component sound absorption cotton which are sequentially arranged. By means of the multi-layer structural design, especially the EPDM skin and the two-component sound absorption cotton are matched, the high rigidity and the excellent sound insulation effect are achieved, meanwhile, the obtained electrically-driven automobile sound insulation pad further has the advantage of being low in gram weight, the requirement for light weight of an electrically-driven automobile can be met, meanwhile, excess materials of the electrically-driven automobile sound insulation pad can be recycled, and the cost is low. And the paint has the advantage of being very environment-friendly.

Description

Technical Field

[0001] The utility model belongs to the technical field of sound insulation pads, and particularly relates to a sound insulation pad for an electric drive vehicle and an electric drive vehicle. Background Technique

[0002] With the rapid development of the economy and the continuous improvement of people's living standards, the development of the automotive industry is very rapid. People's requirements for automobiles are no longer just for a beautiful appearance, but also for high requirements for low carbon, environmental protection and noise resistance of automobiles. During the driving process of automobiles, especially during the driving process of front-wheel drive vehicles, various noises will be transmitted into the car compartment, causing noise pollution to the passengers. Therefore, it is very necessary to install a sound insulation pad in the car compartment for sound insulation.

[0003] There are many reports and studies on existing automotive sound insulation pads. For example, CN205573834U discloses an environment-friendly automotive sound insulation pad, which includes a cotton felt and a rigid cotton bonded to the cotton felt, and at least one magic tape is also provided at the connecting edge of the rigid cotton and the cotton felt; a edge wrapping structure is provided at the connecting edge of the rigid cotton and the cotton felt; the cotton felt is a recycled flame-retardant fiber cotton felt, and the constituent materials include polypropylene fibers and textile waste. To control the manufacturing cost, most of the rigid cotton is made of clothing scraps and ordinary cotton fibers blended together. Another example is CN104723983A, which discloses an automotive sound insulation pad and a preparation method thereof. The sound insulation pad includes a decorative layer, a first sound insulation layer, a mixed fiber felt, a second sound insulation layer and a honeycomb bottom layer arranged in sequence from bottom to top. The decorative layer is made of a PC / ABS alloy material, the first sound insulation layer and the second sound insulation layer are both made of PP / PET composite short fibers, an inorganic fiber spray coating is applied on the inner wall of the honeycomb bottom layer, the inorganic fiber spray coating is a plant fiber spray coating, and the thickness of the plant fiber spray coating is 20-35 mm.

[0004] However, the material grammage of the automotive sound insulation pads provided in the prior art is generally high, and the recycling of product scraps is difficult, and the preparation process is very complicated, which cannot meet the requirements of vehicle lightweight and environmental protection of electric drive vehicles.

[0005] Therefore, in order to solve the above problems, it is of great significance to develop a sound insulation pad for an electric drive vehicle that is environmentally friendly, lightweight and has excellent sound insulation effect. Summary of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a sound insulation pad for an electric drive vehicle and an electric drive vehicle. The sound insulation pad for an electric drive vehicle includes an EPDM skin, a glue film and a two-component sound-absorbing cotton arranged in sequence. Through the matching of the above multi-layer structure, the obtained sound insulation pad for an electric drive vehicle not only meets the requirements of rigidity and sound insulation effect, but also has the characteristics of small odor, environmental protection and lightweight, meeting the requirements of vehicle lightweight of electric drive vehicles.

[0007] To achieve the purpose of this utility model, the following technical solutions are adopted in this utility model:

[0008] In a first aspect, this utility model provides a sound insulation pad for an electric drive vehicle. The sound insulation pad for an electric drive vehicle includes an EPDM skin, an adhesive film, and a two-component sound-absorbing cotton arranged in sequence.

[0009] The sound insulation pad for an electric drive vehicle provided by this utility model includes an EPDM skin, an adhesive film, and a two-component sound-absorbing cotton arranged in sequence. By using the adhesive film to bond the EPDM skin and the two-component sound-absorbing cotton, replacing the original PU foaming process, while meeting the requirements of high rigidity and excellent sound insulation effect of the sound insulation pad, the obtained sound insulation pad for an electric drive vehicle also has the advantage of low gram weight and can meet the lightweight requirements of electric drive vehicles; in addition, since the two-component sound-absorbing cotton belongs to recyclable materials, the obtained sound insulation pad for an electric drive vehicle also has the characteristics of recyclable leftovers, small odor, and being very environmentally friendly.

[0010] During use, the sound insulation pad for an electric drive vehicle provided by this utility model needs to be wrapped outside the motor of the electric drive vehicle, and one side of the two-component sound-absorbing cotton is in contact with the motor.

[0011] This utility model does not impose special restrictions on the preparation method of the provided sound insulation pad for an electric drive vehicle, and it can be prepared according to the conventional methods in the art. Exemplarily, the EPDM skin can be heated first, and after being pressed into shape, it is bonded with the adhesive film and the two-component sound-absorbing cotton, and then through water jet cutting, accessory assembly, and product final inspection, the sound insulation pad for an electric drive vehicle is obtained.

[0012] In a preferred embodiment of this utility model, the gram weight of the EPDM skin is 3000 - 4000 g / m 2 , such as 3000 g / m 2 , 3100 g / m 2 , 3200 g / m 2 , 3300 g / m 2 , 3400 g / m 2 , 3500 g / m 2 , 3600 g / m 2 , 3700 g / m 2 , 3800 g / m 2 , 3900 g / m 2 or 4000 g / m 2 etc.

[0013] In a preferred embodiment of the present utility model, the thickness of the EPDM skin is 1.5 to 3.5 mm, such as 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm or 3.5 mm, etc.

[0014] In a preferred embodiment of the present utility model, the adhesive film is a hot melt adhesive film. Exemplarily, Bostik hot melt adhesive TEP60T can be specifically selected.

[0015] In a preferred embodiment of the present utility model, the grammage of the adhesive film is 15 to 25 g / m 2 , such as 15 g / m 2 , 16 g / m 2 , 17 g / m 2 , 18 g / m 2 , 19 g / m 2 , 20 g / m 2 , 21 g / m 2 , 22 g / m 2 , 23 g / m 2 , 24 g / m 2 , 25 g / m 2 etc.

[0016] In a preferred embodiment of the present utility model, the thickness of the adhesive film is 1 to 15 mm, such as 1 mm, 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm or 15 mm, etc.

[0017] In a preferred embodiment of the present utility model, the grammage of the two-component sound-absorbing cotton is 350 to 450 g / m 2 , such as 350 g / m 2 , 360 g / m 2 , 370 g / m 2 , 380 g / m 2 , 390 g / m 2 , 400 g / m 2 , 410 g / m 2 , 420 g / m 2 , 430 g / m 2 , 440 g / m 2 , 450 g / m 2 etc.

[0018] In a preferred embodiment of the present utility model, the thickness of the two-component sound-absorbing cotton is 18 - 26 mm, such as 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 24.5 mm or 26 mm, etc.

[0019] In a preferred embodiment of the present utility model, the grammage of the sound insulation pad for the electric drive vehicle is 3600 - 4400 g / m 2 , such as 3600 g / m 2 , 3700 g / m 2 , 3800 g / m 2 , 3900 g / m 2 , 4000 g / m 2 , 4100 g / m 2 , 4200 g / m 2 , 4300 g / m 2 or 4400 g / m 2 etc.

[0020] In a second aspect, the present utility model provides an electric drive vehicle, and the electric drive vehicle includes the sound insulation pad for the electric drive vehicle as described in the first aspect.

[0021] Compared with the prior art, the present utility model has the following beneficial effects:

[0022] The sound insulation pad for the electric drive vehicle provided by the present utility model includes an EPDM skin, an adhesive film, and a two-component sound-absorbing cotton arranged in sequence; through the above multi-layer structure design, especially by using the adhesive film to connect the EPDM skin and the two-component sound-absorbing cotton, replacing the original PU foaming process, while meeting the rigidity and sound insulation effect, the obtained sound insulation pad for the electric drive vehicle has the advantage of low grammage, can meet the lightweight requirement of the electric drive vehicle. In addition, the two-component sound-absorbing cotton also belongs to recyclable materials, so that the leftovers of the obtained sound insulation pad for the electric drive vehicle can be recycled, which is very environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic cross-sectional structure diagram of the sound insulation pad for the electric drive vehicle provided by the present utility model;

[0024] Wherein, 1 - EPDM skin, 2 - adhesive film, 3 - two-component sound-absorbing cotton. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The technical solution provided by the present utility model will be clearly and completely described below in conjunction with the drawings and embodiments. Obviously, the specific embodiments described are only a part of the embodiments of the present utility model, rather than all the embodiments, and the materials involved in the specific embodiments described are all existing materials and can be obtained through commercially available products.

[0027] Embodiment 1

[0028] An electric drive vehicle sound insulation pad, the cross-sectional structure schematic diagram of which is as Figure 1 shown, including an EPDM skin 1, an adhesive film 2 and a two-component sound-absorbing cotton 3 arranged in sequence;

[0029] Among them, the gram weight of the EPDM skin 1 is 3500 g / m 2 , the thickness is 3 mm, and the material is purchased from Celuta;

[0030] The gram weight of the adhesive film 2 is 20 g / m 2 , the thickness is 1.5 mm, and the material is purchased from Bostik hot melt adhesive TEP60T;

[0031] The gram weight of the two-component sound-absorbing cotton 3 is 400 g / m 2 , the thickness is 20 mm, and the material is purchased from Jiangsu Zhenyuan.

[0032] Embodiment 2

[0033] An electric drive vehicle sound insulation pad, the cross-sectional structure of which is the same as that of Embodiment 1, including an EPDM skin, an adhesive film and a two-component sound-absorbing cotton arranged in sequence;

[0034] Among them, the gram weight of the EPDM skin is 4000 g / m2 , with a thickness of 2.8 mm, and the material is purchased from Celotex;

[0035] The gram weight of the adhesive film is 20 g / m 2 , with a thickness of 1.5 mm, and the material is purchased from Bostik hot melt adhesive TEP60T;

[0036] The gram weight of the two-component sound-absorbing cotton is 450 g / m 2 , with a thickness of 22 mm, and the material is purchased from Jiangsu Zhenyuan.

[0037] Example 3

[0038] An electric drive vehicle sound insulation pad, whose cross-sectional structure is the same as that of Example 1, includes an EPDM skin, an adhesive film, and a two-component sound-absorbing cotton arranged in sequence;

[0039] Among them, the gram weight of the EPDM skin is 3000 g / m 2 , with a thickness of 3.5 mm, and the material is purchased from Celotex;

[0040] The gram weight of the adhesive film is 20 g / m 2 , with a thickness of 1.5 mm, and the material is purchased from Bostik hot melt adhesive TEP60T;

[0041] The gram weight of the two-component sound-absorbing cotton is 350 g / m 2 , with a thickness of 18 mm, and the material is purchased from Jiangsu Zhenyuan.

[0042] Comparative Example 1

[0043] An electric drive vehicle sound insulation pad, which includes an EPDM layer, a PE film layer, and a thermoplastic recycled cotton layer arranged in sequence;

[0044] Among them, the gram weight of the EPDM layer is 4500 g / m 2 , with a thickness of 3 mm;

[0045] The gram weight of the PE adhesive film is 20 g / m 2 , with a thickness of 0.8 mm;

[0046] The gram weight of the thermoplastic recycled cotton layer is 5000 g / m 2 , with a thickness of 70 mm.

[0047] Performance test:

[0048] (1) Gram weight: Test is carried out according to the test method provided by EQCT-961;

[0049] (2) Sound insulation quantity: Test is carried out according to the test methods provided by EQCT-1064, EQCD-714, and the test condition is 1000 Hz;

[0050] (3) Odor level: The test was carried out with reference to the test method provided by EQCL-4009. The test conditions were: 2000L bag, 65°C, 2h.

[0051] The sound insulation pads for electric-driven vehicles provided in Examples 1 to 3 and Comparative Example 1 were tested according to the above test method, and the test results are shown in Table 1:

[0052] Table 1

[0053]

[0054]

[0055] It can be seen from the data in Table 1 that:

[0056] Compared with Comparative Example 1, the sound insulation pads for electric drive provided in Examples 1 to 3 still have better sound insulation performance and better environmental protection performance under the advantage of low gram weight.

[0057] The applicant declares that the present utility model illustrates a sound insulation pad for electric-driven vehicles and an electric-driven vehicle through the above embodiments, but the present utility model is not limited to the above process steps, that is, it does not mean that the present utility model must rely on the above process steps to be implemented. Those skilled in the art should understand that any improvement to the present utility model, the equivalent substitution of the raw materials selected for the present utility model, the addition of auxiliary components, the selection of specific methods, etc. all fall within the protection scope and the disclosure scope of the present utility model.

Claims

1. An acoustic insulation pad for an electric vehicle, characterized in that, The sound insulation pad for the electric vehicle includes an EPDM skin, an adhesive film, and a two-component sound-absorbing cotton, which are arranged in sequence; The grammage of the EPDM skin is 3000 - 4000 g / m 2 , and the thickness is 1.5 - 3.5 mm; The grammage of the adhesive film is 15-25 g / m 2 , and the thickness is 1-15 mm; The grammage of the two-component sound-absorbing cotton is 350-450 g / m 2 , and the thickness is 18-26 mm.

2. The sound insulation pad for an electric vehicle according to claim 1, wherein The adhesive film is a hot-melt adhesive film.

3. The sound insulation pad for an electric vehicle according to claim 1, characterized in that, The grammage of the sound insulation pad for the electric vehicle is 3600 - 4400 g / m 2 .

4. An electric vehicle, characterized in that, The electric vehicle includes the sound insulation pad for the electric vehicle according to any one of claims 1 to 3.

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