KR102634239B1 - Plate heater for vehicle - Google Patents

Abstract

The present invention relates to a planar heating heater for automobiles. Specifically, the present invention can provide a quick and uniform thermal sensation at low voltage and low power despite securing a large heating area, while minimizing manufacturing costs and easily and conveniently controlling on-off operation. It is about a surface heater for automobiles that can be used.

Description

Plate heater for vehicle}

The present invention relates to a planar heating heater for automobiles. Specifically, the present invention can provide a quick and uniform thermal sensation at low voltage and low power despite securing a large heating area, while minimizing manufacturing costs and easily and conveniently controlling on-off operation. It is about a surface heater for automobiles that can be used.

A planar heating heater is a compact heater with electrodes and heating elements printed on a planar support plate, and is used in electrical and electronic products that require miniaturization and weight reduction, such as printers, copiers, heaters, ovens, cookers, etc., mobile devices, etc. For example, it can be applied to various purposes such as automobiles, ships, and aircraft.

In particular, the surface heating heater for automobiles is a surface heating heater that provides a sense of warmth to the driver or passengers. The surface heater that provides a sense of warmth to the driver is provided in the curved area under the car steering wheel, and this complex installation area generates a wide range of heat. It is difficult to design to secure area or provide a quick and uniform thermal sensation with low voltage and low power, and there is also a problem of increased manufacturing costs due to complex design.

In addition, the planar heater for automobiles has a problem in that the design becomes complicated due to the need for a separate switch to allow the driver to directly control the operation, and the manufacturing cost further increases due to the complicated design.

Therefore, despite securing a large heating area, it is possible to provide a quick and uniform thermal sensation at low voltage and low power, while manufacturing costs can be minimized and the on-off operation can be easily and conveniently controlled. There is an urgent need for surface heaters for automobiles.

The purpose of the present invention is to provide a planar heater for automobiles that can provide a quick and uniform thermal sensation at low voltage and low power despite securing a large heating area, while minimizing manufacturing costs.

In addition, the purpose of the present invention is to provide a planar heating heater for automobiles whose on-off operation can be easily and conveniently controlled.

In order to solve the above problems, the present invention,

A planar heating heater for an automobile, comprising a base film, an electrode portion formed on one surface of the base film and including a pair of electrodes having different polarities, and one or more heating elements connected to each of the pair of electrodes. The base film includes a heating area in which the heating unit is formed and an electrode extension area where an end of each of the pair of electrodes extends, and one of the pair of electrodes extends from the electrode extension area. and a pair of split electrodes forming the other electrode of the pair of electrodes extend from both sides of the one electrode, respectively.

Here, each end of the pair of split electrodes is connected to each other in the electrode extension area, and a terminal portion is provided on the pair of split electrodes, where one electrode and the end of the pair of electrodes are connected to each other in the electrode extension area. Provides a planar heating heater for automobiles, which is characterized in that:

In addition, in the heating area, one of the pair of electrodes is formed by being divided from the center of the heating area to each of both side ends, and each of the pair of split electrodes in the heating area is formed at the center and both side ends. Provided is a planar heating heater for an automobile, characterized in that it is formed between the two surfaces.

Furthermore, the heating unit includes a plurality of heating elements whose both ends are connected to each of the pair of electrodes, and the plurality of heating elements are connected to each other in series or parallel.

In addition, the plurality of heating elements include a plurality of heating elements having a relatively short straight length, and the electrode unit further includes a connecting electrode connecting the plurality of heating elements having a short straight length to each other. , provides planar heating heaters for automobiles.

In addition, a planar heating heater for an automobile is provided, wherein a plurality of heating elements arranged in a row are connected to one heating element.

Meanwhile, it further includes a contact switch unit including a transfer electrode (Tx) and a receive electrode (Rx) as a pair of electrodes and an electrically conductive film separating the pair of electrodes, and the base film. includes a switch extension area extending from an end of each of the transfer electrode (Tx) and the receiving electrode (Rx), and a terminal portion to which a fine voltage is applied is provided at an end of the transfer electrode (Tx) in the switch extension area, A planar heating heater for an automobile is provided, characterized in that a terminal portion to which an ammeter is connected is provided at an end of the receiving electrode (Rx).

Here, a planar heating heater for an automobile is provided, characterized in that it further includes a cover part for protecting the electrode part, the heating part, and the contact switch part.

Additionally, the base film may be made of polyethylene terephthalate (PET), polyimide (PI), polyacrylonitrile (PAN), polyurethane (PU), silicone, or polycarbonate (polycarbonate). PC), tefron, liquid crystal polymer (LCP), poly ether ether ketone (PEEK), polyethersulphone (PES), polyacrylate (PAR), poly polyetherimide (PEI), polyethyelenen napthalate (PEN), polyphenylene sulfide (PPS), polyallylate, cellulose triacetate (CTA), and cellulose acetate pro A planar heating heater for an automobile is provided, which includes a plastic film made of at least one plastic material selected from the group consisting of cellulose acetate propinonate (CAP).

Meanwhile, the heating element is formed from a heating element composition containing a mixed binder and conductive particles, and the conductive particles include one or more carbon particles selected from the group consisting of carbon black, carbon nanotubes, graphite, and activated carbon. , provides planar heating heaters for automobiles.

The planar heating heater for automobiles according to the present invention is capable of providing a quick and uniform thermal sensation at low voltage and low power, despite securing a large heating area through a new electrode design, and has excellent effects in that manufacturing costs can be minimized.

In addition, the planar heating heater for an automobile according to the present invention has an excellent effect of easily and conveniently controlling the on-off operation by being provided with a contact switch.

Figure 1 schematically shows a planar heating heater for an automobile according to the present invention.
FIG. 2 schematically shows the base film in FIG. 1.
FIG. 3 schematically shows an electrode portion formed on the base film shown in FIG. 2.
Figure 4 schematically shows a heating portion formed on the electrode shown in Figure 3.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure will be thorough and complete, and so that the spirit of the invention can be sufficiently conveyed to those skilled in the art. Like reference numerals refer to like elements throughout the specification.

Figure 1 schematically shows a planar heating heater for an automobile according to the present invention, Figure 2 schematically shows the base film in Figure 1, and Figure 3 shows an electrode on the base film shown in Figure 2. It schematically shows how the part is formed, and Figure 4 schematically shows how the heating part is formed on the electrode part shown in Figure 3.

As shown in Figures 1 to 4, the planar heating heater for an automobile according to the present invention includes a base film 100, a pair of electrodes formed on one surface of the base film 100 and having different polarities. It may include a heating unit 300 including a unit 200 and one or more heating elements connected to each of a pair of electrodes of the electrode unit 200.

In addition, a contact switch unit 400 including a pair of electrodes may be additionally provided around the base film 100, and the electrode unit 200, the heating unit 300, and the contact switch unit 400 may be provided around the base film 100. A cover part (not shown) may be additionally formed to protect the switch part 400 from external shock or pressure, and the cover part may be made of the same or different material as the base film 100.

Specifically, as shown in FIG. 2, the base film 100 can be manufactured into a shape suitable for a planar heating heater for an automobile, for example, a shape that can be installed under the steering wheel of an automobile, and heat generation for each region. A heating area 110 in which the unit 300 is formed, an electrode extension area 120 extending so that the ends of each pair of electrodes included in the electrode unit 200 can be connected to the terminal unit, and the contact switch unit 400 ) may be divided into a switch extension area 130, etc., which extends so that the ends of each pair of electrodes included in can be connected to the terminal portion.

The base film 100 is an insulating film to prevent short circuit between a pair of electrodes included in the electrode unit 200 and is made of polyethylene terephthalate (PET), polyimide (PI), or polyacrylic. Poly acrylonitrile (PAN), polyurethane (PU), silicone, polycarbonate (PC), tefron, liquid crystal polymer (LCP), polyether ether ketone (poly ether ether) ketone (PEEK), polyethersulphone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethyelenen napthalate (PEN), polyphenylene sulfide (polyphenylene sulfide) It may include a plastic film made of one or more plastic materials selected from the group consisting of polyallylate (PPS), polyallylate, cellulose triacetate (CTA), cellulose acetate propinonate (CAP), etc. You can.

These plastic films generally have a far-infrared emissivity greater than 0.80 compared to a black body, for example, around 0.88, so they can provide a sense of warmth by irradiating far-infrared rays, which are beneficial to the human body, to the subject as radiant light. Additionally, because they do not irradiate visible light, Glare caused by visible light can be avoided, and furthermore, the heat capacity is low, so even when the heating portion 300 is formed on the lower surface of the base film 100, there is an advantage that there is almost no heat loss from the upper surface.

The base film 100 including the plastic film may have a thickness of more than 25 ㎛ and less than 75 ㎛, and preferably 45 to 55 ㎛. If the thickness of the base hill 110 is less than 25 ㎛, it is difficult to handle, while if it is more than 75 ㎛, there is a problem that the manufacturing cost increases unnecessarily and the heat capacity increases, resulting in increased heat generation loss.

As shown in FIG. 3, the electrode unit 200 has different polarities and is made of silver (Ag), copper (Cu), aluminum (Al), stainless steel (SUS), nickel (Ni), alloys thereof, etc. It includes a pair of electrodes 210 and 220 made of a metal material. For example, when one electrode 210 of the pair of electrodes has a positive electrode (+), the other electrode 220 has a negative electrode. (-) can be held, and both ends of each heating element included in the heating unit 300 are connected to each of the pair of electrodes 210 and 220, thereby supplying power to the heating element.

For example, one electrode 210 of the pair of electrodes extends from the electrode extension area 120 of the base film 100, and the other electrode is on each side of the one electrode 210 ( A pair of split electrodes 220a and 220b forming 220) are each extended to provide a total of three electrode strands.

In addition, by forming a pattern in which the ends of each of the pair of split electrodes 220a and 220b are connected to each other, the terminal portion to which the power is connected is connected to the first terminal portion 211 connected to the one electrode 210 and to each other. A second terminal portion 221 connected to the connected pair of split electrodes 220a and 220b may be formed.

Accordingly, in the heating area 110 of the base film 100, the one electrode 210 is formed by being divided from the center of the heating area 110 to each end of both sides, and the pair of split electrodes 220a ,220b) Each can be formed between the center and both side ends, and through this electrode pattern, a large heating area is secured and a quick and uniform thermal sensation is provided at low voltage and low power, while the length of each electrode and the number of terminal parts are adjusted. Manufacturing costs can be reduced by minimizing.

Meanwhile, in the case of a conventional planar heating heater, a pair of electrodes with different polarities, that is, two strands of electrodes, are formed in an extending pattern in the electrode extension area of the base film, so the pair of electrodes do not overlap each other in the heating area. In order to prevent this, as the electrode pattern design becomes more complicated and the length of the electrode increases, the manufacturing cost increases. At the same time, as the electrode becomes longer and the distance from the terminal increases, the voltage drops, increasing the heating temperature in the plurality of heating elements connected to the electrode. may be different.

In addition, the electrode portion 200 further includes a connection electrode 230 connecting the heating element, which is inevitably formed to have a relatively short straight length depending on the shape of the base film 100, thereby forming the base film 100. The volume resistance and heating temperature of all heating elements formed in the heating area 110 can be uniformly adjusted to enable uniform heating.

The electrode unit 200 is formed by laminating metal foil on one side of the base film 100 and then patterning it using an etching method using photolithography, screen printing, gravure printing, roll-to-roll gravure printing, comma coating, roll-to-roll comma coating, It can be formed by printing a metal paste on one side of the base film 100 using a printing technique such as flexo, imprinting, or offset printing, followed by drying and curing at 100 to 180°C.

As shown in FIG. 4, the heating unit 300 may include one or more heating elements whose both ends are connected to a pair of electrodes 210 and 220 having different polarities, respectively, and the plurality of heating elements are connected to the base film. The heating area 110 of 100 may be connected to each other in series or parallel through the pair of electrodes 210 and 220, and a plurality of heating elements arranged in a row may be connected to form one heating element.

The heating element can be formed by printing and then drying a heating element composition containing a mixed binder and conductive particles, and the mixed binder is made of phenol-based resin, acetal-based resin, and isocyanate-based so that it can have heat resistance even at a temperature of about 300°C. It may contain two or more types selected from the group consisting of resin, epoxy resin, etc., and the conductive particles may include carbon particles and may further include metal powder.

The carbon particles may include carbon black, carbon nanotubes, graphite, activated carbon, etc., preferably carbon nanotubes and graphite. Since carbon nanotubes as the carbon particles have a large aspect ratio, a small amount of carbon nanotubes can form a sufficient heat transfer network. It not only makes it possible, but also has the effect of increasing the glass transition temperature and heat resistance of the heating element composition, and graphite makes it possible to achieve low resistance that cannot be achieved with carbon nanotubes alone.

As shown in FIG. 1, the contact switch unit 400 may include a contact switch using a capacitance sensor, and the contact switch unit 400 using the capacitance sensor may be connected to the heating unit 300. The on-off operation of the heating unit 300 can be controlled by controlling whether or not power is applied to.

Specifically, the contact switch unit 400 includes a transfer electrode (Tx) 410 and a receive electrode (Rx) 420 as a pair of electrodes spaced apart from each other, and the pair of electrodes is spaced apart from each other. The electrodes 410 and 420 may be formed on the upper surface of an electrically conductive film (not shown) laminated on one side of the base film 100 or may be embedded within the electrically conductive film with the upper surface exposed, and the base film ( 100), in the switch extension area 130, one electrode 410 of the pair of electrodes may be formed in a divided state on both sides with the other electrode 420 as the center, and each end thereof Silver terminal portions 411, 412, and 421 may be formed.

For example, a fine voltage is applied to the terminal portions 411 and 412 at the ends of the transfer electrode (Tx) 410 by a CMOS drive, etc., and thus between the transfer electrode (Tx) 410 and the receiving electrode (Rx) 420. A microcurrent flows through the electrically conductive film, and an ammeter capable of measuring the amount of the microcurrent may be connected to the terminal portion 421 connected to the end of the receiving electrode (Rx) 420.

Accordingly, when the user's fingers, etc. partially contact the electrically conductive film between the pair of electrodes 410 and 420, a portion of the current flowing through the electrically conductive film flows into the user's fingers, etc. and is measured by the ammeter, etc. The amount of minute current changes, and this is detected through a separate control unit to control whether or not to apply power to the heating unit 300, making it easy to turn on and off the heating unit 300. You can control it.

Although the present invention has been described above with reference to an embodiment, those skilled in the art may make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the claims described below. You can do it. Therefore, if the modified implementation basically includes the elements of the claims of the present invention, it should be considered to be included in the technical scope of the present invention.

100: Base film 200: Electrode portion
300: Heating part 400: Contact switch part

Claims (10)

As a surface heating heater for automobiles,
base film,
An electrode portion formed on one surface of the base film and including a pair of electrodes having different polarities, and
A heating unit including one or more heating elements connected to each of the pair of electrodes,
The base film has a heating area where the heating part is formed and an electrode extension area where the ends of each of the pair of electrodes extend,
In the electrode extension area, one electrode of the pair of electrodes extends, and a pair of split electrodes forming the other electrode of the pair of electrodes extend from each side of the one electrode, respectively,
In the heating area, one electrode of the pair of electrodes is formed by being divided from the center of the heating area to each of both side ends, and in the heating area, each of the pair of split electrodes is formed between the center and both side ends. A planar heating heater for an automobile, characterized in that it is formed. According to paragraph 1,
In the electrode extension area, ends of each of the pair of split electrodes are connected to each other,
A planar heating heater for an automobile, characterized in that a terminal portion is provided on one of the pair of electrodes and a pair of split electrodes whose ends are connected to each other in the electrode extension area. delete According to paragraph 1,
The heating unit includes a plurality of heating elements whose both ends are connected to each of the pair of electrodes,
A planar heating heater for an automobile, characterized in that the plurality of heating elements are connected to each other in series or parallel. According to paragraph 4,
The plurality of heating elements include a plurality of heating elements having a relatively short straight length,
The electrode unit is characterized in that it further comprises a connection electrode connecting the plurality of heating elements formed with a short straight length to each other, a planar heating heater for an automobile. According to paragraph 4,
A planar heating heater for an automobile, characterized in that a plurality of heating elements arranged in a row are connected to one heating element. According to claim 1 or 2,
It further includes a contact switch unit including a transfer electrode (Tx) and a receive electrode (Rx) as a pair of electrodes and an electrically conductive film separating the pair of electrodes,
The base film includes a switch extension region extending from an end of each of the transfer electrode (Tx) and the receive electrode (Rx),
Planar heating for automobiles, characterized in that a terminal to which a fine voltage is applied is provided at an end of the transfer electrode (Tx) in the switch extension area, and a terminal to which an ammeter is connected is provided at an end of the receive electrode (Rx). heater. In clause 7,
A planar heating heater for an automobile, characterized in that it further comprises a cover part for protecting the electrode part, the heating part, and the contact switch part. According to claim 1 or 2,
The base film is polyethylene terephthalate (PET), polyimide (PI), polyacrylonitrile (PAN), polyurethane (PU), silicone, and polycarbonate (PC). , Tefron, liquid crystal polymer (LCP), poly ether ether ketone (PEEK), polyethersulphone (PES), polyacrylate (PAR), polyetherimide (polyetherimide (PEI), polyethyelenen napthalate (PEN), polyphenylene sulfide (PPS), polyallylate, cellulose triacetate (CTA), and cellulose acetate propionate. A planar heating heater for an automobile, comprising a plastic film made of at least one plastic material selected from the group consisting of (cellulose acetate propinonate; CAP). According to paragraph 4,
The heating element is formed from a heating element composition containing a mixed binder and conductive particles,
A planar heating heater for an automobile, wherein the conductive particles include one or more carbon particles selected from the group consisting of carbon black, carbon nanotubes, graphite, and activated carbon.