Thermoplastic rubber automobile accessory

Abstract

The utility model belongs to the technical field of automobile parts, and particularly relates to a thermoplastic rubber automobile part which comprises a rubber chassis and a rubber partition plate, the rubber partition plate comprises an outer rubber plate and an inner rubber plate, a first slope is arranged on the upper surface of the rubber chassis, and a trapezoidal sliding groove is formed in the rubber chassis. A through groove is formed in the rubber base plate, a containing cavity is formed in the rubber base plate, and a second slope corresponding to the first slope is arranged at the bottom of the outer rubber plate. The inner rubber plate is softened and deformed after being burned and then can flow into the containing cavity through the through groove, and after the outer rubber plate is separated from the inner rubber plate, the second slope at the bottom can slide down through the first slope, so that the symmetrical outer rubber plates can be attached, the ceramic silicon rubber can be ceramized after being burned, and a ceramized sintered body is hard and not prone to deformation after being burned. Therefore, the thermal runaway protection effect is achieved, and compared with solid ceramic silicone rubber, the symmetrically-attached outer rubber plates are lower in heat transfer effect.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, specifically relating to a thermoplastic rubber automotive part. Background Technology

[0002] A new energy battery pack is a battery assembly composed of multiple battery cells. Unlike the lead-acid batteries used in traditional gasoline vehicles, new energy battery packs are manufactured using high-efficiency and lightweight materials such as lithium-ion batteries, sodium-ion batteries, and hydrogen fuel cells, better meeting the needs of new energy vehicles and energy storage systems. The battery pack mainly consists of a structural system, battery cells, modules, a thermal management system, a casing, and a battery management system (BMS). The structural system, primarily composed of the battery pack cover, tray, various metal supports, end plates, and bolts, can be considered the "skeleton" of the battery pack, providing support, resistance to mechanical shock and vibration, and environmental protection (waterproofing and dustproofing). Existing battery packs still primarily use various metals as materials, and the large proportion of metals can lead to failure to meet lightweight requirements. Furthermore, metals are more expensive than non-metals. Ceramicized silicone rubber, as a relatively ideal rubber component, can replace some metals in new energy battery packs, primarily serving a function of thermal runaway protection.

[0003] Existing ceramicized silicone rubber used in new energy battery packs is usually a single piece that can protect the battery cell. However, assembling this single piece of ceramicized silicone rubber is difficult and has a high processing cost. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a thermoplastic rubber automotive part that solves the problems of difficulty in assembling integral ceramicized silicone rubber and high processing costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thermoplastic rubber automotive part, including a rubber chassis and a rubber partition, wherein the rubber partition includes an outer rubber plate and an inner rubber plate, the upper surface of the rubber chassis is provided with a first slope, the interior of the rubber chassis is provided with a trapezoidal groove, the interior of the rubber chassis is provided with a through groove, the interior of the rubber chassis is provided with a receiving cavity, and the bottom of the outer rubber plate is provided with a second slope corresponding to the first slope.

[0006] Preferably, the outer rubber sheet and the inner rubber sheet are integrally pressed and formed.

[0007] Preferably, the rubber chassis and the outer rubber plate are both made of ceramicized silicone rubber, and the inner rubber plate is made of EPDM rubber.

[0008] Preferably, the outer rubber sheet is located on both sides of the inner rubber sheet and is arranged symmetrically.

[0009] Preferably, the bottom of the inner rubber plate is adapted to the shape of the trapezoidal groove, and both are trapezoidal.

[0010] Preferably, the rubber partition is divided into horizontal and vertical plates, with the length of the horizontal plate being two-thirds of the length of the vertical plate, and the horizontal and vertical plates intersecting to form independent chambers.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This thermoplastic rubber automotive part consists of an outer rubber sheet and an inner rubber sheet. The inner rubber sheet, made of EPDM rubber, is less expensive than the outer rubber sheet, made of ceramicized silicone rubber. Therefore, the overall cost of the rubber sheet is relatively low. EPDM rubber has lower heat resistance than ceramicized silicone rubber, thus exhibiting thermoplasticity. After being exposed to fire, the inner rubber sheet softens and deforms, allowing it to flow into the receiving cavity through the channel. After the inner rubber sheet detaches, the outer rubber sheet slides down the bottom slope through the first slope, allowing the symmetrical outer rubber sheets to fit together.

[0013] 2. The outer rubber sheet of this thermoplastic rubber automotive part, made of ceramicized silicone rubber, can be ceramicized when burned. The sintered body after ceramicization is relatively hard, thus providing thermal runaway protection. The symmetrically bonded outer rubber sheet has a lower thermal conductivity than solid ceramicized silicone rubber, thereby further improving the heat resistance of the outer rubber sheet. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model, used together with the embodiments of this utility model to explain this utility model, and do not constitute a limitation on this utility model. In the drawings:

[0015] Figure 1 This is a complete structural schematic diagram of the present invention;

[0016] Figure 2 This is a front view of the present invention;

[0017] Figure 3 This is a structural diagram of the rubber partition of this utility model;

[0018] Figure 4 This utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 5 This is another structural schematic diagram of the present invention.

[0020] In the diagram: 1. Rubber chassis; 2. Rubber partition; 2-1. Outer rubber plate; 2-2. Inner rubber plate; 3. Slope 1; 4. Trapezoidal chute; 5. Through groove; 6. Receiving cavity; 7. Slope 2. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 The present invention provides the following technical solution: a thermoplastic rubber automotive part, including a rubber chassis 1 and a rubber partition 2. The rubber partition 2 includes an outer rubber plate 2-1 and an inner rubber plate 2-2. A ramp 3 is formed on the upper surface of the rubber chassis 1. A trapezoidal groove 4 is formed inside the rubber chassis 1. A through groove 5 is formed inside the rubber chassis 1. A receiving cavity 6 is formed inside the rubber chassis 1. A ramp 7 corresponding to the ramp 3 is formed at the bottom of the outer rubber plate 2-1.

[0023] In this embodiment, the rubber partition 2 is composed of an outer rubber plate 2-1 and an inner rubber plate 2-2. The inner rubber plate 2-2, made of EPDM rubber, is less expensive than the outer rubber plate 2-1, made of ceramicized silicone rubber. Therefore, the overall cost of the rubber partition 2 is relatively low. EPDM rubber has lower heat resistance than ceramicized silicone rubber, thus exhibiting thermoplasticity. After being burned, the inner rubber plate 2-2 softens and deforms, and can then flow into the receiving cavity 6 through the channel 5. After the inner rubber plate 2-2 detaches, the outer rubber plate 2-1 can slide down the bottom slope 7 through the slope 3, thus allowing the symmetrical outer rubber plates 2-1 to fit together. The ceramicized silicone rubber outer rubber plate 2-1 can be ceramicized when burned. The sintered body after ceramicization is relatively hard, thus providing thermal runaway protection. The symmetrically fitted outer rubber plate 2-1 has a lower thermal conductivity than solid ceramicized silicone rubber, thereby further improving the heat resistance of the outer rubber plate 2-1.

[0024] Specifically, the outer rubber sheet 2-1 and the inner rubber sheet 2-2 are integrally pressed and formed. The overall cost of the integrally pressed outer rubber sheet 2-1 and inner rubber sheet 2-2 is lower than that of the ceramicized silicone rubber used in new energy battery PACKs. Moreover, the rubber separator 2 formed by the outer rubber sheet 2-1 and the inner rubber sheet 2-2 is lighter than that of ceramicized silicone rubber. Furthermore, the rubber separator 2 can be slidably installed, making it easier to assemble with new energy battery PACKs.

[0025] Specifically, both the rubber chassis 1 and the outer rubber plate 2-1 are made of ceramicized silicone rubber. Ceramicized silicone rubber is a fire-resistant composite material made by vulcanizing silicone rubber with the addition of inorganic fillers such as ceramic fillers, fluxes, and reinforcing agents. It has good elasticity and heat resistance and can maintain structural integrity for a long time at high temperatures of 600℃-1000℃. The inner rubber plate 2-2 is made of ethylene propylene diene monomer (EPDM) rubber. EPDM rubber is a synthetic rubber copolymerized from ethylene, propylene, and a small amount of non-conjugated diene. It has excellent weather resistance, chemical corrosion resistance, and electrical insulation properties. EPDM rubber has a lower melting point than ceramicized silicone rubber, so it will soften and deform first when exposed to fire, and then flow through the channel 5 into the receiving cavity 6.

[0026] The capacity of cavity 6 is sufficient to hold softened and deformed EPDM rubber.

[0027] Specifically, the outer rubber sheet 2-1 is located on both sides of the inner rubber sheet 2-2 and is arranged symmetrically. Therefore, when the inner rubber sheet 2-2 is burned and enters the receiving cavity 6, the slope 7 at the bottom of the outer rubber sheet 2-1 will slide down the slope 3, allowing them to fit together. Please refer to [reference needed]. Figure 5 ;

[0028] The outer rubber sheet 2-1 has a lower thermal conductivity than the ceramicized silicone rubber as a whole, and saves on the amount of ceramicized silicone rubber used, thus ensuring the heat insulation capability of the outer rubber sheet 2-1.

[0029] Specifically, the bottom of the inner rubber plate 2-2 is adapted to the shape of the trapezoidal slide groove 4, both being trapezoidal. Thus, the bottom of the inner rubber plate 2-2 can slide inside the trapezoidal slide groove 4, which is beneficial for the assembly and disassembly of the rubber partition 2. The trapezoidal slide groove 4 can support the rubber partition 2 to stand upright, thus protecting the battery cell.

[0030] Specifically, the rubber partition 2 is divided into horizontal and vertical plates. The length of the horizontal plate is two-thirds of the length of the vertical plate. The horizontal and vertical plates intersect to form independent chambers. These independent chambers are rectangular and are adapted to the shape of the battery cells, thus facilitating the loading of individual battery cells. The loaded independent battery cells are separated by the interspersed rubber partitions 2.

[0031] The working principle or usage process of this utility model is as follows: In use, the rubber partitions 2 of the horizontal and vertical plates can be slidably installed inside the trapezoidal groove 4, thereby completing the combination of the rubber partitions and the rubber base 1, forming... Figure 1The entire assembly consists of a crisscrossing network of components, which is then installed within a new energy battery pack frame. A pre-installed fixing device within the battery pack frame secures the rubber chassis 1. The battery cells are then installed within the independent chambers formed by the horizontal and vertical plates. Finally, the battery pack cover is sealed to form a complete new energy battery pack for use in new energy vehicles. In the event of a fire in a new energy vehicle, the outer rubber sheet 2-1, made of ceramicized silicone rubber, will become ceramicized due to the increased temperature. The resulting sintered ceramicized body is relatively hard, thus providing thermal runaway protection. In contrast, the inner rubber sheet 2-2, made of EPDM rubber, has lower heat resistance compared to the outer rubber sheet 2-1 made of ceramicized silicone rubber. This results in thermoplasticity. The inner rubber sheet 2-2 softens and deforms after being burned, and can then flow into the receiving cavity 6 through the channel 5. After the inner rubber sheet 2-2 detaches, the outer rubber sheet 2-1 can slide down the bottom slope 2 7 through the slope 1 3, so that the symmetrical outer rubber sheets 2-1 can fit together. The symmetrically fitted outer rubber sheets 2-1 have a lower thermal conductivity than solid ceramicized silicone rubber, which further improves the heat resistance of the outer rubber sheets 2-1 and protects the battery cell. The rubber separator 2 is composed of the outer rubber sheet 2-1 and the inner rubber sheet 2-2. The inner rubber sheet 2-2 made of EPDM rubber is cheaper than the outer rubber sheet 2-1 made of ceramicized silicone rubber. Therefore, the overall cost of the rubber separator 2 is relatively low.

[0032] Finally, it should be noted that the above descriptions are merely preferred embodiments of this utility model and are not intended to limit the utility model. The selection and detailed description of these embodiments in this specification are for the purpose of better explaining the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A thermoplastic rubber automotive part comprising a rubber chassis (1) and a rubber bulkhead (2), characterized in that: The rubber partition plate (2) comprises an outer rubber plate (2-1) and an inner rubber plate (2-2), the upper surface of the rubber base plate (1) is provided with a slope one (3), the inner part of the rubber base plate (1) is provided with a trapezoidal sliding groove (4), the inner part of the rubber base plate (1) is provided with a through groove (5), the inner part of the rubber base plate (1) is provided with a containing cavity (6), and the bottom of the outer rubber plate (2-1) is provided with a slope two (7) corresponding to the slope one (3).

2. A thermoplastic rubber automotive component according to claim 1, wherein: The outer rubber plate (2-1) and the inner rubber plate (2-2) are integrally formed by pressing.

3. A thermoplastic rubber automotive component according to claim 1, wherein: The material of the rubber base plate (1) and the outer rubber plate (2-1) is ceramic silicon rubber, and the material of the inner rubber plate (2-2) is ethylene-propylene-diene rubber.

4. A thermoplastic elastomer automotive part according to claim 1, wherein: The outer rubber plate (2-1) is located on both sides of the inner rubber plate (2-2) and is symmetrically arranged.

5. A thermoplastic elastomer automotive part according to claim 1, wherein: The bottom of the inner rubber plate (2-2) is adapted to the shape of the trapezoidal sliding groove (4) and is trapezoidal.

6. A thermoplastic elastomer automotive component according to claim 1, wherein: The rubber partition plate (2) is divided into a horizontal plate and a vertical plate, the length of the horizontal plate is two-thirds of the length of the vertical plate, and the horizontal plate and the vertical plate are crosswise arranged to form independent cavities.

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