Granted Patent B2

US 12,305,811 · App. 18/552,539 · Granted May 20, 2025

Inventors: Philip Wette (Bueckeburg, DE); Thomas Keller (Rottweil, DE)

Assignee: Robert Bosch GmbH

F17C13/025F17C5/007F17C13/023F17C2205/058F17C2221/012F17C2250/034F17C2250/0434F17C2265/065

Abstract

Claims (18)

1. A method for a communication between a fueling device ( 2 ) and a vehicle ( 4 ), having the steps of:

coupling ( 28 ) the fueling device ( 2 ) to a tank ( 6 ) of the vehicle ( 4 ) by means of a fuel hose ( 10 ),

providing ( 30 ) pressurized fuel to the fuel hose ( 10 ),

varying ( 32 ) the pressure on the fuel hose ( 10 ) by superimposing a specified base pressure ( 22 ) with a pressure sequence in order to modulate a first signal to be transmitted, and

detecting ( 34 ) the pressure being applied to the fuel hose ( 10 ) by means of the vehicle ( 4 ), and extracting ( 36 ) the first signal to be transmitted from the detected pressure.

2. The method according to claim 1 , further comprising:

varying ( 38 ) a mass flow through the vehicle ( 4 ) tapped from the vehicle ( 4 ) by superimposing a specified base mass flow with a mass flow sequence in order to modulate a second signal to be transmitted, and

detecting ( 40 ) the mass flow passing through the fuel hose ( 10 ) through the fueling device ( 2 ) and extracting the second signal to be transmitted from the detected mass flow.

3. The method according to claim 1 , further comprising:

replacing identification features of the fueling device ( 2 ) and the vehicle ( 4 ) or a cryptographic key, and

establishing a radio connection of the fueling device ( 2 ) and the vehicle ( 4 ) using the identification features or the cryptographic key.

4. The method according to claim 1 , wherein the base pressure ( 22 ) increases or decreases over time.

5. The method according to claim 1 , wherein the pressure sequence ( 24 ) is based on a rectangular, sinusoidal, or sawtooth signal, wherein an amplitude of the rectangular, sinusoidal, or sawtooth signal falls below the base pressure ( 22 ).

6. The method according to claim 1 , further comprising the initiation of a fueling operation at a specified secure minimum pressure as the base pressure ( 22 ), after which the varying ( 32 ) of the pressure occurs.

7. The method according to claim 2 , further comprising a control of the pressure at the fueling device ( 2 ) for accelerated fueling based on a pressure request transmitted by the vehicle ( 4 ) by means of the second signal.

8. A system ( 5 ) for a communication between a fueling device ( 2 ) and a vehicle ( 4 ), wherein the fueling device ( 2 ) comprises a fuel hose configured to be coupled to a tank ( 6 ) of the vehicle ( 4 ), wherein the fueling device ( 2 ) is configured to provide a fuel that has been subjected to variable pressure through the fuel hose ( 10 ), wherein the fueling device ( 2 ) comprises a first control unit ( 12 ), which is configured to cause ( 32 ) the pressure to vary on the fuel hose ( 10 ) by superimposing a specified base pressure ( 22 ) with a pressure sequence ( 24 ) in order to modulate a first signal to be transmitted, wherein the vehicle ( 4 ) comprises a second control unit ( 14 ), which is configured to detect the pressure being applied to the fuel hose ( 10 ) via a tank pressure sensor ( 16 ) and to extract the first signal to be transmitted from the detected pressure.

9. The system ( 5 ) according to claim 8 , wherein the second control unit ( 14 ) is configured to vary, by means of a tank valve ( 18 ), a mass flow by superimposing a specified base mass flow with a mass flow sequence in order to modulate a second signal to be transmitted, and wherein the first control unit ( 12 ) is configured to detect via a mass flow sensor ( 20 ) the mass flow passing through the fuel hose ( 10 ) and to extract the second signal to be transmitted from the detected mass flow.

10. A system ( 5 ) according to claim 8 wherein the fueling device ( 2 ) is a hydrogen fueling device.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (24)