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DE-102024132618-A1 - Heating device and motor vehicle

DE102024132618A1DE 102024132618 A1DE102024132618 A1DE 102024132618A1DE-102024132618-A1

Abstract

The present invention relates to a heating device (10) for a sensor device (110) for a motor vehicle (100). The heating device (10) comprises a heating element (20) for heating a surface area of a viewing device (112) of the sensor device (110) which is at least partially transparent to the sensor device (110), and an energy interface (30) for supplying the heating element (20) with electrical energy. The energy interface (30) has a first connection device (32) for connecting the heating device (10) to an operating circuit (120) of the motor vehicle (100) and a second connection device (34) for connecting the heating device (10) to a pre-operation circuit (122) of the motor vehicle (100). Furthermore, the invention relates to a motor vehicle (100) comprising a sensor device (110) with a vision device (112) that is at least partially transparent to the sensor device (110) and a heating device (10) for heating the vision device (112) over a surface.

Inventors

  • Fabian Pfitz
  • Dominik Schwarz

Assignees

  • DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT

Dates

Publication Date
20260513
Application Date
20241108

Claims (10)

  1. Heating device (10) for a sensor device (110) for a motor vehicle (100), the heating device (10) comprising a heating element (20) for heating a surface area of a sighting device (112) of the sensor device (110) which is at least partially transparent to the sensor device (110) and an energy interface (30) for supplying the heating element (20) with electrical energy, characterized in that the energy interface (30) has a first connection device (32) for connecting the heating device (10) to an operating circuit (120) of the motor vehicle (100) and a second connection device (34) for connecting the heating device (10) to a pre-operation circuit (122) of the motor vehicle (100).
  2. Heating device (10) according Claim 1 , characterized in that the first connecting device (32) and/or the second connecting device (34) are designed as energy and/or control signal lines.
  3. Heating device (10) according to one of the preceding claims, characterized in that the first connecting device (32) and/or the second connecting device (34) comprise a blocking diode (36) and/or a series resistor (38).
  4. Heating device (10) according Claim 3 , characterized in that the series resistor (38) is designed as a heating wire to support the heating element (20) for the area heating of the viewing device (112).
  5. Heating device (10) according to one of the preceding claims, characterized in that the first connecting device (32) and the second connecting device (34) are connected as a common input of the heating element (20) and/or that the first connecting device (32) and the second connecting device (34) are designed as a common plug device.
  6. Heating device (10) according to one of the preceding claims, characterized in that the heating element (20) is designed as a heating film, heating mat, heating wire, heating radiant and/or as a heating coil.
  7. Heating device (10) according to one of the preceding claims, characterized in that the second connecting device (34) for connecting the heating device (10) to a pre-operation circuit (122) in the form of a rear window heating device, a pre-conditioning is designed as a circuit and/or a parking heater circuit.
  8. Heating device (10) according to one of the preceding claims, characterized in that the heating device (10) comprises a base body (40), in particular a housing, wherein the heating element (20), the first connecting device (32) and/or the second connecting device (34) are arranged in the base body (40) and/or that the base body (40) is designed to receive the sensor device (110) and/or the sighting device (112).
  9. Heating device (10) according to one of the preceding claims, characterized in that the heating device (10) comprises a detection device (50) for detecting a variable of the heating device (10), the sensor device (110) and/or the environment, wherein the heating element (20) is controllable by the detection device (50) depending on the detected variable.
  10. Motor vehicle (100) comprising a sensor device (110) with a vision device (112) that is at least partially permeable to the sensor device (110) and a heating device (10) for heating the vision device (112) over a surface, wherein the heating device (10) is configured according to one of the preceding claims.

Description

The present invention relates to a heating device for a sensor device for a motor vehicle. Furthermore, the invention relates to a motor vehicle comprising a sensor device with a viewing device that is at least partially permeable to the sensor device and a heating device for heating the viewing device over its entire surface. Currently known driver assistance systems comprise a multitude of sensors. To prevent malfunctions and system failures, heating devices are used to defrost and/or reduce interior or exterior condensation caused by moisture. Furthermore, preconditioning procedures are known for electric vehicles. In practice, when preconditioning is activated, condensation has formed on the interior surfaces of sensors, such as camera-viewing windows, due to the activated ventilation. This condensation leads to the failure of the corresponding driver assistance systems shortly after starting the vehicle. Additionally, with known defrosting methods, such as windshield defrosting, activated preconditioning results in little to no defrosting in the sensor area, such as the camera-viewing window, which also leads to the failure of the driver assistance systems. Known heating devices are mostly controllable by and/or depending on the corresponding sensor device, so that operation of the heating device only starts with the operation of the corresponding sensor device and thus with operation usually in the form of a switching-on process of the motor vehicle. It is therefore an object of the present invention to overcome, or at least partially overcome, the disadvantages described above in the prior art. In particular, it is an object of the invention to provide a heating device for a sensor device for a motor vehicle, which makes the reliable operation of the sensor device of the motor vehicle particularly easy. In particular, it is further an object of the invention to provide a motor vehicle with a sensor device and a heating device. The aforementioned problem is solved by the claims. In particular, the problem is solved by a heating device for a sensor device for a motor vehicle having the features of independent claim 1. Furthermore, the problem is solved by a motor vehicle having the features of independent claim 10. Further advantages and details of the invention will become apparent from the dependent claims, the description, and the drawings. Features described in connection with the heating device according to the invention naturally also apply in connection with the motor vehicle according to the invention, and vice versa, so that the disclosure of the individual aspects of the invention always makes, or can make, reciprocal references. According to a first aspect of the invention, the problem is solved by a heating device for a sensor device for a motor vehicle. The heating device comprises a heating element for heating a surface area of a viewing device of the sensor device which is at least partially transparent to the sensor device, and an energy interface for supplying the heating element with electrical energy. According to the invention, the energy interface has a first connection device for connecting the heating device to an operating circuit of the motor vehicle and a second connection device for connecting the heating device to a pre-operation circuit of the motor vehicle. Within the scope of the invention, the viewing device is preferably understood as a device that protects and/or limits the sensor device, through which the sensor device can detect objects. By way of example, the viewing device can be understood as a transparent cover, a light shield, and/or a pane of glass. The sensor device is preferably configured as an optical sensor device, in particular as a camera device, radar device, lidar device, infrared device, and/or other sensor device. By way of example, the sensor device is configured as a front camera behind the windshield of the motor vehicle. The heating of the viewing device by the heating element is preferably understood as heating a sufficiently large area of the viewing device to ensure reliable operation of the sensor device. This heating is preferably understood as distinct from point heating. The heating of the viewing device by the heating element is preferably understood as heating by direct heat or by radiant heat. The energy interface according to the invention enables the heating device to be supplied with energy from the motor vehicle. The energy interface is preferably designed as a 12V interface and preferably comprises at least one positive terminal and one negative terminal. Preferably, the positive terminal is connected to the operating circuit via the first connection device and the second connection device. connected or connectable to the pre-operation circuit. The first connecting device and the operating circuit preferably enable the supply and/or control of the heating device during operation of the motor vehicle, particularly after the vehicle