Compressed-air providing system, in particular for providing air for tires of a motor vehicle

Abstract

The invention relates to a compressed-air providing system (10), in particular for providing air for tires (14) of a motor vehicle, comprising a compressor (16) having an electric motor (18), in particular for driving a compressing unit of the compressor (16), the compressed-air providing system (10) having means (22) for connecting the compressed-air providing system (10), in particular the electric motor (18), to an energy supply source (24) for the purpose of supplying the electric motor (18) with electrical energy. According to the invention, the means (22) comprises means for wireless transmission of energy.

Claims

1. A compressed-air providing system for providing air for tires of a motor vehicle, wherein the compressed-air providing system can be connected to a pneumatic tire to be sealed and/or pumped up, the system comprising a compressor having an electric motor for driving a compressing unit of the compressor, wherein the compressed-air providing system is provided with means for connecting the electric motor, to an energy supply source for supplying the electric motor with electrical energy, wherein the electrical energy is transmitted directly to the electric motor by the means, wherein the means comprises means for wireless transmission of energy, characterized in that the means is arranged outside of a housing of the compressed-air providing system, the housing receives the compressor and the electric motor, wherein the means can be connected or is connected via an energy supply line, in particular a cable to the electric motor, wherein the means includes at least one resonant circuit.

2. The compressed-air providing system according to claim 1, characterized in that the means comprises a receiver coil.

3. The compressed-air providing system according to claim 2, characterized in that the means comprises at least one electrical circuit for coupling the electric motor to the receiver coil.

4. The compressed-air providing system according to claim 3, characterized in that the electrical circuit comprises a converter.

5. The compressed-air providing system according to claim 1, characterized in that the means is integrated into a supply plate.

6. The compressed-air providing system according to claim 1, characterized in that the compressed-air providing system comprises a compressed-air outlet opening, wherein the compressed-air outlet opening can be connected directly or via a sealing liquid container to a pneumatic tire to be sealed and/or pumped up.

7. The compressed-air providing system according to claim 1 characterized in that the means is integrated into a supply pad.

8. The compressed-air providing system according to claim 1 characterized in that the means is integrated into a supply plate and a supply pad.

9. The compressed-air providing system according to claim 1 characterized in that the means includes a supply plate.

10. The compressed-air providing system according to claim 1 characterized in that the means includes a supply pad.

11. The compressed-air providing system according to claim 1 characterized in that the means includes a supply plate and a supply pad.

12. The compressed-air providing system according to claim 3, characterized in that the electrical circuit comprises a rectifier.

Description

(1) The invention is explained in more detail below with reference to the drawings. In the drawings:

(2) FIG. 1 shows a schematic representation of a compressed-air providing system with a sealing liquid container and a tire;

(3) FIG. 2 shows a schematic representation of a compressed-air providing system according to the invention;

(4) FIG. 3 shows a schematic representation of a compressed-air providing system according to the invention according to a further embodiment, and

(5) FIG. 4 shows a schematic representation of a compressed-air providing system according to the invention according to a further embodiment.

(6) FIG. 1 shows a schematic representation of a compressed-air providing system 10, which is connected via a sealing liquid container 12 to a pneumatic tire 14 to be sealed or pumped up. According to the representation, the sealing liquid container 12 is directly coupled to the compressed-air providing system 10. Alternatively, the sealing liquid container 12 can also be connected to the compressed-air providing system 10 via a further connecting element (not shown). In systems according to the embodiment shown, compressed air for introducing sealing liquid, along with additional compressed air for distributing the sealing liquid in the pneumatic tire, is provided by the compressed-air providing system 10, wherein the compressed air is conducted through the sealing liquid container 12.

(7) Alternatively, the compressed-air providing system 10 can also be connected directly to the pneumatic tire 14 to be pumped up.

(8) The compressed-air providing system 10 is explained below with reference to FIGS. 2 to 4.

(9) The compressed-air providing system 10 comprises a compressor 16 and an electric motor 18, in particular for driving a compressing unit of the compressor 16. According to the embodiment shown, the compressor 16 and the electric motor 18 are received in a housing 20 of the compressed-air providing system 10.

(10) Furthermore, the compressed-air providing system 10 comprises a means 22 for connecting the compressed-air providing system 10, in particular the electric motor 18, to an energy supply source 24 for supplying the compressed-air providing system 10, in particular the electric motor 18, with electrical energy.

(11) The means 22 of the compressed-air providing system 10 is designed as a means 22 for wireless transmission of energy.

(12) The energy supply source 24 accordingly likewise comprises means for wireless transmission of energy. Such interfaces are usually installed in motor vehicles for the purpose of charging smartphones.

(13) The means 22 for wireless transmission of energy comprises a supply plate 28 or a supply pad. A supply plate 28 or supply pad is understood to mean the part 28 of the compressed-air providing system 10 remote from the housing, which part can be connected or is connected via an energy supply line, in particular via a cable 26, to the compressor, in particular to the electric motor.

(14) The means 22 for wireless transmission of energy comprises a receiver coil 30, see FIG. 3. A transmitter coil 32 is accordingly provided on the motor vehicle side. For inductive energy transmission, a magnetic alternating field is generated on the transmitter side, in particular by means of an oscillator 34. The transmission is effected by means of the mutual induction between the transmitter and receiver coil 30, 32. An alternating voltage is induced in the receiver coil 30. The distance between the two coils 30, 32 represents the wireless transmission path and should be as small as possibletypically a few centimeters to a few tens of cm distance.

(15) In order to increase the range of the inductive coupling, according to a further advantageous embodiment it can be provided that the means for wireless transmission of energy comprises at least one resonant circuit 36. According to the embodiment shown, a resonant circuit is provided on both the transmitter side and receiver side. An oscillating circuit consists of a capacitor and a coil whose resonant frequency is matched to the transmission frequency. The resonance between the oscillating circuits 36 leads to improved magnetic coupling between the transmitter and receiver coil 30, 32 at the transmission frequency.

(16) On the receiver side, an electrical circuit 38 for coupling the electric motor 18 to the receiver coil 30 is also provided.

(17) The electrical circuit 38 comprises, for example, a converter or a rectifier. For example, the induced alternating voltage can thus advantageously be adapted to an operating voltage of the electric motor 18.