CN115339413A - Heating defrosting module for automobile - Google Patents

Abstract

The invention provides a heating and defrosting module for automobiles, comprising: a bottom plate; a heating coil arranged on the bottom plate; a temperature control module connected with the heating coil; and a connector metal sheet connected with the heating coil, the connector metal The sheet has an L-shaped structure. The metal sheet of the connector is injection molded by inserting one arm and the plane where the bottom plate is kept horizontal, and the other arm protrudes vertically outwards relative to the bottom plate. Adhesive, welding or insert injection molding fixed on the B side of the automotive exterior parts to achieve heating and defrosting of the millimeter wave radar area. The invention installs the heating and defrosting module on the surface B of the millimeter-wave radar area of the exterior decoration of the automobile, and achieves the purpose of heating and defrosting the surface A of the exterior decoration through heat transfer, and overcomes the severe weather environment in future automatic driving. It has a good application prospect because of the influence of wave radar penetration performance.

Description

A heating and defrosting module for automobiles

technical field

The invention relates to the field of automobiles, in particular to a heating and defrosting module for automobiles.

Background technique

The existing heating and defrosting technology is mainly aimed at ACC wave-transparent signs, and most of them are A-side heating solutions. The A-side heating solution uses the method of heating diaphragm and product insert injection molding, which causes the problem that additional parts are required to remove Cover the connector on the A side of the product. In addition, with the development of autonomous driving technology and the needs of OEM customers, the wave-transmitting area in the future will not only be limited to the signage area in the center of the car body, but may also be other areas. For example, there are currently OEMs The customer defines an area on one side of the upper trim as the wave-transparent area. For this area, the traditional heating diaphragm insert injection molding technology has many limitations in its implementation.

Contents of the invention

The purpose of the present invention is to provide a heating and defrosting module for automobiles, so as to solve the problem of the influence of severe weather environment on the wave penetration performance of millimeter-wave radar in future automatic driving.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A heating and defrosting module for automobiles is provided, comprising: a base plate; a heating coil arranged on the base plate; a temperature control module connected to the heating coil; and a connector metal sheet connected to the heating coil, The metal sheet of the connector has an L-shaped structure, and the metal sheet of the connector is formed by insert molding by keeping one arm horizontal to the plane where the bottom plate is located, and the other arm protrudes vertically outward relative to the bottom plate. Constitute the PIN pin socket part; wherein, the bottom plate is fixed on the B side of the automobile exterior decoration by bonding, welding or insert injection molding, so as to realize the heating and defrosting of the millimeter-wave radar-permeable area.

According to a preferred solution of the present invention, the base plate is provided with a circumferentially extending glue groove, and by applying glue to the glue groove, the heating and defrosting module is fixed on the automobile exterior trim.

Preferably, the temperature control module is connected to the heating coil by welding.

Preferably, the heating coil is a copper wire.

Preferably, the metal sheet of the connector is made of hard copper, and the surface is tin-plated.

Preferably, each of the heating and defrosting modules includes a plurality of connector metal sheets.

Preferably, a through positioning hole is provided on the arm where the plane of the connector metal sheet and the bottom plate are kept horizontal for insert injection molding, so as to facilitate insert injection molding.

Preferably, a welding pad is provided on the top surface of the insert-molded arm of the metal sheet of the connector and the plane where the bottom plate is kept horizontal, so as to facilitate welding with the heating coil.

For the first time, the present invention creatively proposes a heating and defrosting module that can be installed on the B side of the millimeter-wave radar area of the automobile exterior decoration, which solves the additional shielding problem caused by the existing technology arranged on the A surface of the automobile exterior decoration, and solves the problem of Many limitations of the traditional heating diaphragm insert injection molding technology are solved.

According to the heating and defrosting module for automobiles provided by the present invention, by installing the heating and defrosting module on the surface B of the millimeter-wave radar area of the automobile exterior decoration, the heating and defrosting of the surface A of the exterior decoration can be achieved through heat transfer. For the purpose of frosting, since the temperature control module is built in the heating defrosting module, it can also effectively control the heating temperature within a certain range to avoid excessive surface temperature of the product.

To sum up, according to the present invention, a heating and defrosting module for the millimeter-wave radar area of the automobile exterior is provided, which realizes the purpose of heating and defrosting the area in rainy and snowy weather, and overcomes the harshness of future automatic driving. The influence of weather environment on the wave penetration performance of millimeter wave radar has a good application prospect.

Description of drawings

Fig. 1 is a top view of a heating and defrosting module provided according to a preferred embodiment of the present invention;

Fig. 2 is a side view of the heating and defrosting module shown in Fig. 1;

Fig. 3 is a side view of the metal sheet of the connector;

Fig. 4 is the top view of connector sheet metal;

Fig. 5 is a schematic diagram of the state when the heating and defrosting module is bonded to the surface B of the automobile exterior trim.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments. It should be understood that the following examples are only used to illustrate the present invention but not to limit the scope of the present invention.

As shown in Fig. 1 and Fig. 2, a heating and defrosting module for automobiles is provided according to a preferred embodiment of the present invention, which mainly includes: a bottom plate 1, a glue tank 2, a heating coil 3, a temperature control module 4 and Connector sheet metal 5. The heating and defrosting module can be integrally installed on the B side of the exterior trim of the car to realize the heating and defrosting of the millimeter-wave radar-permeable area and meet the needs of the car for autonomous driving in harsh weather environments.

Wherein, the bottom plate 1 has a substantially planar structure and is formed by injection molding; the glue groove 2 extends circumferentially on the bottom plate 1 for coating glue; To achieve the purpose of heating and defrosting; the temperature control module 4 and the connector metal sheet 5 are connected to the heating coil 3, and the temperature control module 4 can control the heating temperature within a certain range to avoid excessive surface temperature of the product and the connector metal sheet 5 is used to connect with the body wiring harness.

As shown in Fig. 3 and Fig. 4, the metal sheet 5 of the connector has an L-shaped structure. Stretching out, the free end of the arm constitutes a PIN pin socket part 51, which is used as a power socket to connect with the vehicle body wiring harness.

According to this preferred embodiment, as shown in FIG. 2 , the upper surface of the bottom plate 1 is pre-set with a recessed area 1 a for accommodating the temperature control module 4 , which is convenient for placing the temperature control module 4 . Similarly, the glue groove 2 is also a groove opened on the upper surface of the bottom plate 1, so as to facilitate the coating of glue.

According to this preferred embodiment, the temperature control module 4 is connected to the heating coil 3 by welding.

According to this preferred embodiment, the temperature control module 4 selects a patch type resettable fuse (SMD ResettableFUSE), and the resettable fuse is integrated on the FPC soft board, and the FPC soft board is pasted with double-sided adhesive tape on the back, so as to be pasted on the bottom plate 1 as a whole.

According to this preferred embodiment, the heating coil 3 is preferably a copper wire, which can be one strand or multiple strands. It should be understood that the arrangement of the heating coils 3 is not limited to the one shown in FIG. 1 , and the connection form can be connected in series or in parallel, which is designed according to the heating requirements of the product.

According to this preferred embodiment, the glue is polyurethane two-component glue, for example, the glue whose model is LJF6021.

According to this preferred embodiment, the metal sheet 5 of the connector is made of hard copper, and the surface is tin-plated.

According to this preferred embodiment, as shown in Fig. 3 and Fig. 4, the plane where the connector metal sheet 5 and the bottom plate 1 are located is kept horizontal and the arm of the insert injection molding is also provided with a through positioning hole 52, so as to facilitate insert injection molding. More precisely, the top surface of the arm is also provided with a welding pad 53 to facilitate welding with the heating coil 3 , and the formed welding point 54 is shown in FIG. 1 .

According to this preferred embodiment, each heating and defrosting module includes two connector metal sheets 5, thereby forming two PIN pin connector parts 51 at the free ends. But it should be understood that each heating and defrosting module is not limited to two connector metal sheets 5, if the circuit is complex or has other control logic, each heating and defrosting module may have four connector metal sheets 5, Thus, four PIN pin socket parts 51 are formed. The PIN pin socket part 51 is used as a male head, and is connected with the female head of the vehicle body, and the male and female connectors are paired and conducted.

As shown in Figure 5, by applying glue to the glue tank 2, the bottom plate 1 can be bonded to the B side of the automobile exterior trim 100 together with the heating coil 3, the temperature control module 4, and the connector metal sheet 5 arranged thereon. 101, the heating coil 3 is energized and heated, and the heat is transferred from the B side 101 of the automobile exterior trim 100 to the A side 102 through heat transfer, so as to achieve the effect of heating and defrosting the product surface, and solve the problem of harsh weather conditions in future automatic driving. Influence of radar wave penetration performance.

Although the heating and defrosting module in the preferred embodiment described above is bonded to the exterior trim of the vehicle by glue, it should be understood that the connection can be made in other ways than bonding, such as welding, or base plate and front plate inserts Injection molded.

What is described above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Various changes can also be made to the above embodiments of the present invention. All simple and equivalent changes and modifications made according to the claims and description of the application for the present invention fall within the protection scope of the claims of the patent of the present invention. What is not described in detail in the present invention is conventional technical contents.

Claims (8)

1. A heating and defrosting module for automobile, characterized in that, comprising: floor; a heating coil arranged on the base plate; a temperature control module connected to the heating coil; and The connector metal sheet connected with the heating coil, the connector metal sheet has an L-shaped structure, and the connector metal sheet is formed by insert injection molding by keeping one arm horizontal to the plane where the bottom plate is located, and the other arm is opposite The bottom plate protrudes vertically outwards, and the arm forms a PIN pin socket; Wherein, the bottom plate is fixed on the B side of the automobile exterior trim by bonding, welding or insert injection molding, so as to realize the heating and defrosting of the millimeter-wave radar-permeable area. 2. The heating and defrosting module according to claim 1, wherein the base plate is provided with a circumferentially extending glue groove, and by applying glue to the glue groove, the heating and defrosting module can be installed outside the vehicle. Fixing on trim. 3. The heating and defrosting module according to claim 1, wherein the temperature control module is connected to the heating coil by welding. 4. The heating and defrosting module according to claim 1, wherein the heating coil is a copper wire. 5. The heating and defrosting module according to claim 1, characterized in that, the metal sheet of the connector is made of hard copper, and the surface is tin-plated. 6 . The heating and defrosting module according to claim 1 , wherein each of the heating and defrosting modules comprises a plurality of connector metal sheets. 7. The heating and defrosting module according to claim 1, characterized in that, the plane where the connector metal sheet and the bottom plate are located is kept horizontal . 8. The heating and defrosting module according to claim 1, characterized in that, the plane where the metal sheet of the connector is located and the base plate are kept horizontal welding.

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