Novel heatable carpet for vehicle

Abstract

The utility model provides a novel heatable carpet for a vehicle. The novel heatable carpet for the vehicle comprises a fabric layer, a heating cushion layer, a back coating layer and a filling layer which are sequentially arranged from top to bottom, the heating cushion layer is heated by adopting a graphene heating film, an electric heating wire or other heating modes; the graphene heating film or the electric heating wire is electrically connected with a heating circuit; the heating circuits are led out to a whole vehicle body wire harness, and the heating circuit connected with the graphene heating film is connected to a controller for adjusting the temperature; and a heating circuit connected with the electric heating wire is connected to a controller for driving heating and collecting heating signals. The electric heating device is simple and reasonable in structure and high in integrity, the electric heating function is added for heating the feet and legs of a driver and passengers, a traditional air conditioner heating mode is replaced with seat heating and steering wheel heating, energy is saved, and the cruising ability of the electric automobile is improved; the carpet for the vehicle is good in structural stability and convenient to produce and maintain, makes up the blank of matched equipment in the market, and effectively improves the use efficiency of the carpet for the vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories; in particular, to the technical field of automotive carpets; specifically, to a novel heatable automotive carpet. Background Art

[0002] Regarding low-temperature heating during electric vehicle journeys in cold winter, considering the range anxiety caused by the high energy consumption of air conditioning, drivers and passengers usually prefer to wear thick clothes and choose not to turn on the air conditioner or choose to turn it on less.

[0003] In recent years, with the diversification and humanization of electric vehicle functions, many models are equipped with seat heating and steering wheel heating functions. Currently, many car owners choose seat heating and steering wheel heating instead of air conditioning heating.

[0004] Seat heating can ensure that the buttocks and back of the human body are warm, and steering wheel heating can ensure the comfort of the driver's hands. However, the legs and feet still do not get any warmth.

[0005] At present, automotive carpets are mainly used to cover the uncovered visible areas such as the body floor sheet metal, side door sill sheet metal, front lower sheet metal, and wiring harnesses, beautifying the interior environment and providing safe foot support for the passenger compartment; at the same time, automotive carpets are also important acoustic treatment parts that can absorb and isolate noise inside and outside the car, block road noise during driving, and provide a comfortable riding environment for passengers. The fiber layer of automotive carpets can effectively isolate heat conduction from the bottom of the car and reduce the temperature rise inside the car.

[0006] However, the existing automotive carpets lack the heating function for the legs and feet of the driver and passengers, and still cannot meet the heating needs of the legs and feet of the driver and passengers. Utility Model Content

[0007] In view of this, the purpose of the utility model is to design a new type of heated carpet for vehicles, improve the existing vehicle carpet structure, and add an electric heating function. When driving an electric vehicle in low temperatures in winter, the carpet can be used to heat the feet and legs of the driver and passengers. In combination with seat heating and steering wheel heating, it can replace the traditional air conditioning heating method, thereby saving energy, improving the endurance of electric vehicles, filling the gap in supporting equipment in the market, and effectively improving the use efficiency of vehicle carpets.

[0008] The utility model provides a novel heated carpet for a vehicle, comprising:

[0009] A fabric layer, a heating pad layer, a back coating layer and a filling layer are arranged in sequence from top to bottom; the fabric layer, the heating pad layer, the back coating layer and the filling layer are respectively abutted and fixedly connected with each other;

[0010] Wherein, the heating pad layer is heated by a graphene heating film, an electric heating wire or any other heating method;

[0011] The graphene heating film or the electric heating wire is electrically connected to a heating circuit; the heating circuit is led out from the heating pad to the wiring harness of the vehicle body, and the heating circuit connected to the graphene heating film is electrically connected to a controller for adjusting the temperature;

[0012] The heating circuit connected to the electric heating wire is electrically connected to a controller for driving heating and collecting heating signals.

[0013] The graphene heating film uses a single layer of carbon atoms grown by chemical vapor deposition to make the conductive material and the film substrate form a whole, and then cover it with an insulating protective layer. While ensuring insulation, it is fixed on the non-woven fabric by shaping glue;

[0014] The surface of the graphene heating film is made of polymer resin, which is soft, safe, practical, foldable, non-toxic and harmless, and green and environmentally friendly. It is resistant to high temperatures of 210°C, acid and alkali, IPX7 waterproof, V2 flame retardant, and a silent product.

[0015] Graphene heating film has the characteristics of ultra-thinness, softness, and strong conductivity. Compared with traditional electric heaters, graphene heating film has higher efficiency and lower energy consumption. The power consumption of graphene heating film is relatively low, which is mainly due to its unique conductive properties. Graphene is a material with high conductivity, and its conductivity can reach several thousand S / m, which is more than 200 times that of copper. Graphene heating film can achieve the same heating effect at a lower voltage, thereby reducing energy consumption. The ultra-thin design of graphene heating film can transfer heat to the heated object more quickly, improve heating efficiency and reduce energy consumption.

[0016] Graphene heating film has low heat loss. Graphene heating film has good thermal conductivity and low heat loss. It can convert electrical energy into thermal energy more effectively, reducing energy consumption.

[0017] Graphene heating film has high safety. It can adjust the temperature by controlling the current and voltage, avoiding the safety problems caused by excessive current.

[0018] The power supply voltage of the electric heating wire heating method of the utility model is 9-16V, and the maximum power is 300W. Multiple gears can be set, for example, 3 gears are set, namely 300W, 200W, and 100W. This power supply power is a better power, but it is not the only embodiment.

[0019] With the target temperature of 80°C or other set temperature as an indicator, full power 300W is used for heating before reaching the target temperature of 80°C; after reaching the target temperature of 80°C, a temperature maintenance strategy of a cyclic heating method of full power, 300W heating for 200ms and stopping heating for 800ms is used. This strategy is a recommended temperature control strategy, not the only implementation example.

[0020] Furthermore, the graphene heating film includes: a film-like substrate, a conductive material, an insulating protective layer, and a non-woven fabric arranged in sequence from the inside to the outside; the conductive material is attached to the film-like substrate, and the insulating protective layer covers the outer surface of the film-like substrate; the non-woven fabric is fixedly connected to the outside of the insulating protective layer.

[0021] Furthermore, the fabric layer is made of heat-conductive nylon material that is flame-retardant, antistatic, wear-resistant, and high-temperature resistant (preferably capable of withstanding temperatures of 80 to 120° C.).

[0022] Furthermore, the back coating layer is made of EPDM material with heat insulation, sound insulation and high temperature resistance.

[0023] EPDM material has excellent aging resistance, weather resistance, ozone resistance, sunlight resistance, heat resistance, water resistance, water vapor resistance, UV resistance, radiation resistance and other aging properties, excellent chemical resistance, acid, alkali, detergent, animal and vegetable oils, alcohol, ketone, etc.; outstanding water resistance, superheated water resistance, water vapor resistance; polar oil resistance; excellent insulation performance; wide applicable temperature range, the lowest operating temperature is -40 to -60℃, and it can be used for a long time at 130℃; it can maintain the shape of the carpet well.

[0024] Furthermore, the filling layer is made of PU foam material with shock-absorbing NVH effect performance and thermal insulation performance.

[0025] PU foam material has the advantages of good physical properties, resistance to bending, good softness, high tensile strength and good air permeability.

[0026] Furthermore, the outer layer of the heating circuit is made of flame-retardant ABS material to ensure the high temperature and fire safety of the power supply circuit.

[0027] Furthermore, the heating circuit uses twisted-pair copper conductors.

[0028] Twisted pair cables are made up of two copper wires with an insulating protective layer. The two insulated copper wires are twisted together at a certain density. The radio waves radiated by each wire during transmission will be offset by the radio waves emitted by the other wire, effectively reducing the degree of signal interference.

[0029] Furthermore, the insulating protection layer adopts a high dielectric strength insulator.

[0030] A preferred application example of the new type of heated carpet for vehicles of the utility model is:

[0031] The electric vehicle cabin is laid out in the layout of driver's seat carpet, co-driver's seat carpet, second row left carpet and second row right carpet.

[0032] For models with 3 or more rows, the layout is based on the same layout principle.

[0033] Compared with the prior art, the beneficial effects of the utility model are:

[0034] The new heated carpet for vehicle provided by the utility model has a simple and reasonable structure and strong integrity. By improving the existing vehicle carpet structure and adding an electric heating function, it can be used to heat the feet and legs of drivers and passengers when driving an electric car at low temperatures in winter, and cooperate with seat heating and steering wheel heating to replace the traditional air-conditioning heating method, thereby saving energy and improving the endurance of the electric car. The new heated carpet for vehicle has good structural stability, is easy to produce and maintain, fills the gap in supporting equipment in the market, and effectively improves the use efficiency of the vehicle carpet. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those skilled in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0036] In the attached picture:

[0037] Figure 1 This is a schematic diagram of the structure of a new type of heated carpet for vehicles according to the utility model;

[0038] Figure 2 The electrical schematic diagram of the novel heated carpet for vehicle according to the embodiment of the utility model;

[0039] Figure 3 This is a heating logic diagram of a new type of heated carpet for a vehicle according to an embodiment of the utility model.

[0040] The symbols in the accompanying drawings are:

[0041] 1-Fabric layer; 2-Heating pad layer; 3-Back coating layer; 4-Filling layer. DETAILED DESCRIPTION

[0042] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0043] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0044] It should be understood that although the terms first, second, and third may be used in the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0045] The utility model embodiment provides a new type of car heating carpet, see Figure 1 As shown, including:

[0046] A fabric layer 1, a heating pad layer 2, a back coating layer 3 and a filling layer 4 are arranged in sequence from top to bottom; the fabric layer 1, the heating pad layer 2, the back coating layer 3 and the filling layer 4 are respectively abutted and fixedly connected;

[0047] Wherein, the heating pad layer 2 is heated by a graphene heating film or an electric heating wire;

[0048] The graphene heating film or the electric heating wire is electrically connected to a heating circuit; the heating circuit is led out from the heating pad layer 2 to the wiring harness of the vehicle body, and the heating circuit connected to the graphene heating film is electrically connected to a controller for adjusting the temperature;

[0049] The heating circuit connected to the electric heating wire is electrically connected to a controller for driving heating and collecting heating signals.

[0050] The graphene heating film is made by using a single layer of carbon atoms grown by chemical vapor deposition to integrate the conductive material with the film substrate, and then covered with an insulating protective layer. While ensuring insulation, it is fixed on the non-woven fabric by a shaping glue.

[0051] The surface of the graphene heating film is made of polymer resin, which is soft, safe, practical, foldable, non-toxic and harmless, and green and environmentally friendly. It is resistant to high temperatures of 210°C, acid and alkali, IPX7 waterproof, V2 flame retardant, and a silent product.

[0052] The present embodiment adopts the electric heating wire heating mode with a power supply voltage of 9-16V and a maximum power of 300 W. Multiple gears can be set, for example, 3 gears are set, namely 300W, 200W, and 100W.

[0053] With the target temperature of 80°C or other set temperature as an indicator, full power 300W is used for heating before the target temperature of 80°C is reached; after the target temperature of 80°C is reached, a temperature maintenance strategy is adopted with a cyclic heating method of full power, 300W heating for 200ms and stopping heating for 800ms.

[0054] The graphene heating film includes: a film substrate, a conductive material, an insulating protective layer, and a non-woven fabric arranged in sequence from the inside to the outside; the conductive material is attached to the film substrate, and the insulating protective layer covers the outer surface of the film substrate; the non-woven fabric is fixedly connected to the outside of the insulating protective layer.

[0055] The insulating protection layer is made of an insulator with high dielectric strength.

[0056] The fabric layer 1 is made of heat-conductive nylon material that is flame-retardant, antistatic, wear-resistant, and resistant to high temperatures of 80 to 120°C.

[0057] The back coating layer 3 is made of EPDM material with heat insulation, sound insulation and high temperature resistance.

[0058] EPDM material has excellent aging resistance, weather resistance, ozone resistance, sunlight resistance, heat resistance, water resistance, water vapor resistance, UV resistance, radiation resistance and other aging properties, excellent chemical resistance, acid, alkali, detergent, animal and vegetable oils, alcohol, ketone, etc.; outstanding water resistance, superheated water resistance, water vapor resistance; polar oil resistance; excellent insulation performance; wide applicable temperature range, the lowest operating temperature is -40 to -60℃, and it can be used for a long time at 130℃; it can maintain the shape of the carpet well.

[0059] The filling layer 4 is made of PU foam material with NVH shock absorption performance and heat insulation performance. PU foam material has the advantages of good physical properties, bending resistance, good softness, high tensile strength, good air permeability, etc.

[0060] In this embodiment, the heating circuit uses a twisted pair of copper wires. A twisted pair is composed of two copper wires with an insulating protective layer. The two insulated copper wires are twisted together at a certain density. The radio waves radiated by each wire during transmission will be offset by the radio waves emitted by the other wire, effectively reducing the degree of signal interference.

[0061] In this embodiment, the outer layer of the heating circuit is made of flame-retardant ABS material to ensure the high temperature and fire safety of the power supply circuit.

[0062] Application Examples

[0063] The utility model embodiment is laid out in the electric vehicle cabin in accordance with the layout of the main driver's carpet, the co-driver's carpet, the second row left carpet, and the second row right carpet. Figure 2 As shown, the connectors are connected to each carpet and are respectively incorporated into the power supply drive circuit and NTC signal line of the corresponding carpet in the body bus; the connector at the other end of the body bus is connected to the terminal of the domain controller or other controller.

[0064] Use any of the following four button methods to turn on the automatic mode:

[0065] 1. Virtual AUTO button on the central control screen;

[0066] 2. Physical AUTO button on the operation panel;

[0067] 3. AUTO button in the mobile phone APP;

[0068] 4. Press the AUTO button to turn on the language input.

[0069] The heating control logic of this application example is as follows (see Figure 3 shown):

[0070] The domain controller collects the temperature inside the car, the temperature outside the car, the rain and light sensors, and the AUTO command from above in the body domain, and determines the existence of heating demand based on the algorithm.

[0071] When the pressure sensor signal under each seat is received as a valid input of "1" and maintained at "1" for more than 3 seconds, the heating of the corresponding electrical components as shown in the above figure is started;

[0072] When it is detected that the pressure sensor signal under each seat jumps from "1" to "0" and remains at "0" for more than 3 seconds, the heating of all electrical components in the corresponding position will be automatically turned off.

[0073] If AUTO is not turned on, the user can turn on or off the heating element in any position according to needs in the central control screen operation interface or through language.

[0074] Control logic description (see Figure 3 As shown): In winter, under low-temperature driving conditions, the domain controller receives a command (central control screen command, language command, AUTO command or any one of remote commands), and sends a drive power supply signal according to the seat pressure sensor signal or other personnel detection signal, and intelligently and automatically turns on the heating carpet in the corresponding area, providing precise point-to-point heating to provide heat for the legs and feet of the driver and passengers. In conjunction with the seat heating in this area, if it is determined that there is someone in the main driver's seat, the steering wheel heating will also be turned on, replacing the existing model's heating method through air conditioning, to achieve the purpose of saving energy and improving battery life.

[0075] The new heated carpet for vehicle provided by the embodiment of the utility model has a simple and reasonable structure and strong integrity. By improving the existing vehicle carpet structure and adding an electric heating function, it can be used to heat the feet and legs of drivers and passengers when driving an electric car at low temperatures in winter. In combination with seat heating and steering wheel heating, it replaces the traditional air-conditioning heating method, thereby saving energy and improving the endurance of the electric car. The new heated carpet for vehicle has good structural stability, is easy to produce and maintain, fills the gap in supporting equipment in the market, and effectively improves the use efficiency of vehicle carpets.

[0076] So far, the technical solution of the utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the utility model.

[0077] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, replacement, and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A new type of heated carpet for a vehicle, characterized in that: include: A fabric layer, a heating pad layer, a back coating layer and a filling layer are arranged in sequence from top to bottom; the fabric layer, the heating pad layer, the back coating layer and the filling layer are respectively abutted and fixedly connected with each other; Wherein, the heating pad layer is heated by any one of a graphene heating film and an electric heating wire; The graphene heating film or the electric heating wire is electrically connected to a heating circuit; the heating circuit is led out from the heating pad to the wiring harness of the vehicle body, and the heating circuit connected to the graphene heating film is electrically connected to a controller for adjusting the temperature; The heating circuit connected to the electric heating wire is electrically connected to a controller for driving heating and collecting heating signals.

2. The novel heated carpet for vehicle according to claim 1, characterized in that: The graphene heating film includes: a film substrate, a conductive material, an insulating protective layer, and a non-woven fabric arranged in sequence from the inside to the outside; the conductive material is attached to the film substrate, and the insulating protective layer covers the outer surface of the film substrate; the non-woven fabric is fixedly connected to the outside of the insulating protective layer.

3. The novel heatable carpet for vehicle according to claim 1 or 2, characterized in that: The fabric layer is made of heat-conductive nylon material that is flame-retardant, antistatic, wear-resistant and high-temperature resistant.

4. The novel heatable carpet for vehicle according to claim 1 or 2, characterized in that: The back coating layer is made of EPDM material with heat insulation, sound insulation and high temperature resistance.

5. The novel heatable carpet for vehicle according to claim 1 or 2, characterized in that: The filling layer is made of PU foam material with shock-absorbing NVH effect performance and thermal insulation performance.

6. The novel heated carpet for vehicle according to claim 1, characterized in that: The outer layers of the heating circuits are made of flame-retardant ABS material.

7. The novel heatable carpet for vehicle according to claim 1, characterized in that: The heating circuit adopts twisted-pair copper conductors.

8. The novel heated carpet for vehicle according to claim 2, characterized in that: The insulating protection layer is made of an insulator with high dielectric strength.

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