A heating pad of an automobile seat and an automobile seat and an automobile

Abstract

This application provides a heating pad for a car seat, a car seat, and a car. The heating pad includes an insulating flexible substrate, on which a first conductive electrode, a second conductive electrode, and at least one heating area are arranged. The heating area is disposed between the first and second conductive electrodes and has a heating coating and a thin-film temperature sensor. The heating area includes multiple first and second heating electrodes arranged in parallel and spaced apart. The heating power density of the heating coating within the interval between the first and second heating electrodes is the same. The thin-film temperature sensor includes a first flexible film and two metal wires located on the first flexible film. One end of the metal wires is connected to an NTC thermistor, and the other end of the metal wires is connected to a signal conversion terminal. The heating pad of this application provides uniform heating, and the thin-film temperature sensor in the heating area ensures that passengers will not experience any foreign body sensation when applied to a car seat cushion.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seat technology, and particularly relates to a heating pad for a seat with massage function, as well as an automotive seat and an automobile. Background Technology

[0002] Existing car seats are generally equipped with heating functions. The heating principle is that the seat heating module controls the current of the heating pad, which generates heat and raises the seat temperature, making passengers feel warmer and more comfortable in cold weather. However, the current heating pads do not heat evenly, and the temperature sensors that monitor the heating pad temperature can make passengers feel uncomfortable or have a foreign object in their body. Therefore, there is a need for a heating pad with a non-intrusive temperature sensor that heats evenly, providing both comfort and safety for passengers. Utility Model Content

[0003] To address the above technical problems, this utility model provides a heating pad for a car seat, as well as a car seat and a car. In this heating pad, the heating coating between each first heating electrode and the second heating electrode in the heating area has the same heating power density, which can ensure uniform heating of the heating pad. A thin film temperature sensor is set in the heating area. After being applied to a car seat cushion, passengers will not feel any foreign object sensation.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] The first aspect of this utility model provides a heating pad for a car seat, including an insulating flexible substrate, on which a first conductive electrode, a second conductive electrode and at least one heating area are arranged. The first conductive electrode and the second conductive electrode are spaced apart from each other, and the heating area is disposed between the first conductive electrode and the second conductive electrode. The heating area has a heat-generating coating and a thin-film temperature sensor.

[0006] The heating area includes a plurality of first heating electrodes and a plurality of second heating electrodes, the first heating electrodes and the second heating electrodes being arranged in parallel and spaced apart, and the heating power density of the heating coating within each interval between the first heating electrode and the second heating electrode being the same;

[0007] The first conductive electrode is electrically connected to the first heating electrode, and the second conductive electrode is electrically connected to the second heating electrode;

[0008] The thin-film temperature sensor includes a first flexible film and two conductive metal lines located on the first flexible film. The conductive metal lines are formed by printing or inkjet printing on the first flexible film. One end of the conductive metal line is connected to an NTC thermistor, and the other end of the conductive metal line is connected to a signal conversion terminal.

[0009] In a preferred embodiment of the present invention, the thin-film temperature sensor further includes a second flexible film, the first flexible film and the second flexible film are hot-pressed together, and a conductive metal wire is located between the first flexible film and the second flexible film.

[0010] In a preferred embodiment of this utility model, the first flexible film and the second flexible film are made of polyimide, PET plastic, aramid or aromatic polyamide, polyetheretherketone, polytetrafluoroethylene, polycarbonate, polyethylene, thermoplastic polyester or polystyrene, respectively.

[0011] In a preferred embodiment of this utility model, the distance between the first heating electrode and the second heating electrode is inversely related to the distance from the power input terminal.

[0012] In a preferred embodiment of this utility model, the insulating flexible substrate has a groove in the middle, a first conductive electrode is arranged around the outer contour of the insulating flexible substrate, and a second conductive electrode is arranged around the outer contour of the groove; at least two heating areas are arranged on the insulating flexible substrate, and the two heating areas are distributed on both sides of the groove.

[0013] In a preferred embodiment of this utility model, the heating coating is formed by coating the insulating flexible substrate with a conductive paste.

[0014] In a preferred embodiment of this utility model, the conductive paste is one of heating carbon paste, graphite paste, or graphene paste.

[0015] In a preferred embodiment of this utility model, the first conductive electrode, the second conductive electrode, the first heating electrode, and the second heating electrode are all silver paste electrodes.

[0016] In a preferred embodiment of this utility model, the car seat heating pad is a seat heating pad or a backrest heating pad.

[0017] Based on the same inventive concept, the second aspect of this utility model also provides a car seat, including the aforementioned car seat heating pad.

[0018] Based on the same inventive concept, a third aspect of this utility model also provides an automobile, including the aforementioned automobile seat.

[0019] Because of the adoption of the above technical solution, this utility model has the following advantages and positive effects compared with the prior art:

[0020] The heating pad provided by this utility model has at least one heating area, which includes multiple first heating electrodes and multiple second heating electrodes. The first and second heating electrodes are arranged in parallel and spaced apart. The heating area has a heating coating, and the heating power density of the heating coating in the interval between each first and second heating electrode is the same. By setting the heating area between the first and second conductive electrodes, connecting the first heating electrode to the first conductive electrode, connecting the second heating electrode to the second conductive electrode, and connecting the first and second conductive electrodes to a power supply module, the heating area can be heated. Moreover, since the first and second heating electrodes are set in the heating area, and the heating power density of the heating coating in the interval between each first and second heating electrode is the same, the heating in the heating area is also uniform.

[0021] Simultaneously, a thin-film temperature sensor is installed within the heating area. This sensor includes a first flexible film and two wires located on the first flexible film. The wires are formed on the first flexible film by inkjet printing or printing. A test terminal is connected to one end of the wire, and a signal conversion terminal is connected to the other end. The signal conversion terminal is placed outside the heating pad, and the first flexible film and the test terminal are partially located on the heating pad. The test terminal is located within the heating area. This allows for real-time monitoring of the temperature of the heating area. Passengers sitting or leaning against the heating pad of this application will not feel the foreign object sensation of commonly used metal wires, ensuring passenger comfort. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a car seat heating pad according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 Enlarged view of section A;

[0024] Figure 3 This is a front view of a thin-film temperature sensor on a heating pad for a car seat according to an embodiment of the present invention.

[0025] Figure 4 This is a top view of a thin-film temperature sensor on a heating pad for a car seat according to an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures: 1-Heating area; 101-First heating electrode; 102-Second heating electrode; 103-Gap; 2-First conductive electrode; 3-Second conductive electrode; 4-Trench; 5-Insulating flexible substrate; 6-Thin film temperature sensor; 601-First flexible thin film; 602-Second flexible thin film; 603-Conductive metal wire; 604-NTC thermistor; 605-Signal conversion terminal. Detailed Implementation

[0027] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a heating pad for a seat with massage function, as well as a car seat and a car, based on the present invention. The advantages and features of the present invention will become clearer from the following description.

[0028] Example 1

[0029] See Figure 1-2 A heating pad for a car seat, which can be placed on the seat cushion or backrest of the car seat, without limitation, includes an insulating flexible substrate 5, on which a first conductive electrode 2 and a second conductive electrode 3 and at least one heating region 1 are arranged. The first conductive electrode 2 and the second conductive electrode 3 are spaced apart from each other by 103. The heating region 1 is disposed between the first conductive electrode 2 and the second conductive electrode 3. The heating region 1 has a conductive coating and a thin film temperature sensor 6 is disposed in the heating region 1.

[0030] Both the first conductive electrode 2 and the second conductive electrode 3 can be either positive or negative electrodes. When the first conductive electrode 2 is a positive electrode, the second conductive electrode 3 is a negative electrode; when the first conductive electrode 2 is a negative electrode, the second conductive electrode 3 is a positive electrode. After the first conductive electrode 2 and the second conductive electrode 3 are connected to the power module, the heating coating heats up, the heating pad heats up, and the thin-film temperature sensor 6 measures the temperature of the heating area 1 in real time.

[0031] The heating region 1 includes a plurality of first heating electrodes 101 and a plurality of second heating electrodes 102. The first heating electrodes 101 and the second heating electrodes 102 are arranged in parallel and spaced apart. The first conductive electrode 2 is electrically connected to the first heating electrode 101, and the second conductive electrode 3 is electrically connected to the second heating electrode 102. The heating power density of the heating coating within the interval 103 between each first heating electrode 101 and the second heating electrode 102 is the same.

[0032] The first heating electrode 101 has the same electrical polarity as the first conductive electrode 2, and the second heating electrode 102 has the same electrical polarity as the second conductive electrode 3. That is, when the first conductive electrode 2 is a positive electrode and the second conductive electrode 3 is a negative electrode, the first heating electrode 101 is a positive heating electrode and the second heating electrode 102 is a negative heating electrode. Multiple spaced-apart first heating electrodes 101 and second heating electrodes 102 are arranged in the heating region 1. By controlling the distance 103 between the first heating electrodes 101 and the second heating electrodes 102, the heating power density of the heating coating within the distance 103 between the first heating electrodes 101 and the second heating electrodes 102 can be ensured to be the same, thereby achieving uniform heating of the heating region 1.

[0033] Furthermore, the distance 103 between the first heating electrode 101 and the second heating electrode 102 is inversely related to the distance between the distance 103 between the first heating electrode 101 and the second heating electrode 102 and the power input terminal; the longer the distance between the distance 103 and the power input terminal, the smaller the distance 103 between the first heating electrode 101 and the second heating electrode 102. Here, the distance 103 between the first heating electrode 101 and the second heating electrode 102 and the power input terminal is the distance between the center point of the distance 103 between the first heating electrode 101 and the second heating electrode 102 and the power input terminal.

[0034] Preferably, the first conductive electrode 2, the second conductive electrode 3, the first heating electrode 101, and the second heating electrode 102 are all silver paste electrodes. Using silver paste electrodes can increase user comfort and prevent users from experiencing foreign body sensations when using car seats. It can also ensure the stability of electrode heating.

[0035] The first heating electrode 101 and the second heating electrode 102 may be formed on an insulating flexible substrate 5, and then a heating coating may be prepared in the gap between the first heating electrode 101 and the second heating electrode 102; or a heating coating may be prepared on the insulating flexible substrate 5 first, and then the first heating electrode 101 and the second heating electrode 102 may be formed on the heating coating.

[0036] In a preferred embodiment, the heating coating may be formed by coating a conductive paste onto an insulating flexible substrate 5. The conductive paste may be any one of a heating carbon paste, a graphite paste, or a graphene paste. Considering the heating power, a graphene paste is preferred as it has a higher power density.

[0037] Alternatively, the heating coating can be formed by preparing conductive materials on the insulating flexible substrate 5 using other processes, such as physical vapor deposition or chemical vapor deposition processes to prepare metal films, graphene films, carbon films, carbon nanotube films, etc. on the insulating flexible substrate 5. Alternatively, a pre-made conductive film (such as graphene) can be transferred onto an insulating cloth and fixed with an adhesive.

[0038] The first heating electrode 101 and the second heating electrode 102 can be formed on the heating coating; or they can be set on the insulating flexible substrate 5, and then the heating coating is prepared only in the interval between the first heating electrode 101 and the second heating electrode 102 using a thin film deposition process or a coating process, etc., without any limitation.

[0039] In a preferred embodiment, the insulating flexible substrate 5 has a groove 4 in its center. A first conductive electrode 2 is disposed around the outer contour of the insulating flexible substrate 5, and a second conductive electrode 3 is disposed around the outer contour of the groove 4. At least two heating regions 1 are arranged on the insulating flexible substrate 5, and the two heating regions 1 are distributed on both sides of the groove 4. See details. Figure 3-4 The thin-film temperature sensor 6 includes a first flexible film 601 and two conductive metal lines 603 located on the first flexible film 601. The conductive metal lines 603 are formed by printing or inkjet printing on the first flexible film 601. One end of the conductive metal line 603 is connected to an NTC thermistor 604, and the other end is connected to a signal conversion terminal 605.

[0040] Since the thin-film temperature sensor 6 includes a first flexible thin film 601 and two conductive metal lines 603 located on the first flexible thin film 601, and these conductive metal lines 603 are formed by printing or inkjet printing on the first flexible thin film 601, the conductive metal lines 603 can be integrated with the first flexible thin film 601, and are almost imperceptible on the first flexible thin film 601. The first flexible thin film 601 and the conductive metal lines 603 form a flexible wire. At one end of the wire, an NTC thermistor 604 is connected between the two conductive metal lines 603, such as by connecting the NTC via a patch. At the other end of the wire, a signal conversion terminal 605 is connected. Therefore, the length of the sensor wire can be arbitrarily set. The signal conversion terminal 605 is placed outside the heating pad, the wire is placed on the heating pad, and the NTC thermistor 604 is located in the heating area 1. When the heating pad with this sensor is used in a car seat, passengers will not feel any foreign object, increasing passenger comfort.

[0041] To protect the sensor wires, the thin-film temperature sensor also includes a second flexible film 602. The first flexible film 601 and the second flexible film 602 are bonded in parallel, and a conductive metal wire 603 is located between the first flexible film 601 and the second flexible film 602. Both the first flexible film 601 and the second flexible film 602 have high-temperature insulation properties. Placing the conductive metal wire 603 between the first flexible film 601 and the second flexible film 602 protects the conductive metal wire 603. The thickness of both the first flexible film 601 and the second flexible film 602 is less than 1 mm.

[0042] In a preferred embodiment, the first flexible film 601 and the second flexible film 602 are made of polyimide, PET plastic, aramid or aromatic polyamide, polyetheretherketone, polytetrafluoroethylene, polycarbonate, polyethylene, thermoplastic polyester or polystyrene, respectively.

[0043] Example 2

[0044] A car seat, including the car seat heating pad of embodiment 1.

[0045] Example 3

[0046] An automobile, including the automobile seat of embodiment 2.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A heating pad for a car seat, characterized in that, The invention includes an insulating flexible substrate on which a first conductive electrode, a second conductive electrode, and at least one heating region are arranged. The first and second conductive electrodes are spaced apart from each other, and the heating region is disposed between the first and second conductive electrodes. The heating region has a heat-generating coating and a thin-film temperature sensor. The heating area includes a plurality of first heating electrodes and a plurality of second heating electrodes, the first heating electrodes and the second heating electrodes being arranged in parallel and spaced apart, and the heating power density of the heating coating within each interval between the first heating electrode and the second heating electrode is the same; The first conductive electrode is electrically connected to the first heating electrode, and the second conductive electrode is electrically connected to the second heating electrode; The thin-film temperature sensor includes a first flexible film and two conductive metal lines located on the first flexible film. One end of the conductive metal lines is connected to an NTC thermistor, and the other end of the conductive metal lines is connected to a signal conversion terminal.

2. The heating pad for a car seat according to claim 1, characterized in that, The thin-film temperature sensor also includes a second flexible film, the first flexible film and the second flexible film are thermally pressed together, and the conductive metal wire is located between the first flexible film and the second flexible film.

3. The heating pad for a car seat according to claim 2, characterized in that, The first flexible film and the second flexible film are made of polyimide, PET plastic, aramid or aromatic polyamide, polyether ether ketone, polytetrafluoroethylene, polycarbonate, polyethylene, thermoplastic polyester or polystyrene, respectively.

4. The heating pad for a car seat according to claim 1, characterized in that, The distance between the first heating electrode and the second heating electrode is inversely related to the distance from the power input terminal.

5. The heating pad for a car seat according to claim 1, characterized in that, The insulating flexible substrate has a groove in the middle, a first conductive electrode is arranged around the outer contour of the insulating flexible substrate, and a second conductive electrode is arranged around the outer contour of the groove. At least two heating areas are arranged on the insulating flexible substrate, and the two heating areas are distributed on both sides of the trench.

6. The heating pad for a car seat according to claim 1, characterized in that, The heating coating is formed by coating the insulating flexible substrate with a conductive paste.

7. The heating pad for a car seat according to claim 6, characterized in that, The conductive paste is one of the following: heating carbon paste, graphite paste, or graphene paste.

8. The heating pad for a car seat according to claim 1, characterized in that, The first conductive electrode, the second conductive electrode, the first heating electrode, and the second heating electrode are all silver paste electrodes.

9. A car seat, characterized in that, Including the heating pad for automobile seats as described in any one of claims 1-8.

10. A car, characterized in that, Including the car seat as described in claim 9.

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