METHOD AND DEVICE FOR DETERMINING AN OPERATING STRATEGY FOR A RANGE EXTENDER OF AN ELECTRIC VEHICLE

• US 20150298554A1
• Filed: 10/21/2013
• Published: 10/22/2015
• Est. Priority Date: 11/28/2012
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Kesch, Bernd
• Granted Patent: US 9,579,981 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60L 15/2045 for optimising the use of energy
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2260/52 drive range estimation, e.g. of estimation of available travel distance
• CPC Class Codes: B60L 2260/54 Energy consumption estimation
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 50/62 charged by low-power generators primarily intended to support the batteries, e.g. range extenders
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 20/10 Controlling the power contribution of each of the prime movers to meet required power demand
• CPC Class Codes: B60W 20/40 Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers power-up or power-down of the driveline B60W30/192
• CPC Class Codes: B60W 2050/005 Sampling
• CPC Class Codes: B60W 2050/0075 Automatic parameter input, automatic initialising or calibrating means
• CPC Class Codes: B60W 2050/146 Display means
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2556/10 Historical data
• CPC Class Codes: B60W 2710/086 Power
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility

Abstract

The present invention relates to a method for determining an operating strategy for a range extender (10) of an electric vehicle (100) having an electric motor (20) and an electrical energy store (30), with the following method steps: detecting (S1) at least one operating parameter of a first type associated with the range extender (10) and at least one operating parameter of a second type associated with the electric motor (20) and/or the electrical energy store (30); and determining (S2) the operating strategy for the range extender (10) by restricting a usage level of the range extender (10), wherein the restriction of the usage level is determined on the basis of the at least one detected operating parameter of the first type and/or the at least one detected operating parameter of the second type.

Claims

1. A method for determining an operating strategy for a range extender (10) of an electric vehicle (100) having an electric motor (20) and an electrical energy store (30), with the following method steps:

detecting (S1) at least one operating parameter of a first type associated with the range extender (10) and at least one operating parameter of a second type associated with the electric motor (20) and/or the electrical energy store (30); and

determining (S2) the operating strategy for the range extender (10) by restricting a usage level of the range extender (10), wherein the restriction of the usage level is determined on the basis of the at least one detected operating parameter of the first type and/or the at least one detected operating parameter of the second type.

2. The method according to claim 1, characterized in that the restriction of the usage level of the range extender (10) includes a limiting of a maximum power output of the range extender (10).

3. The method according to claim 1, characterized in that a histogram of a load distribution of the range extender (10) is used as the at least one operating parameter of the first type.

4. The method according to claim 1, characterized in that a histogram of a duty cycle of the electric motor (20) is used as the at least one operating parameter of the second type.

5. The method according to claim 1, characterized in that a charging state of the electrical energy store (30) is used as the at least one operating parameter of the second type.

6. The method according to claim 1, characterized in that the determined operating strategy is displayed via a human-machine-interface (55).

7. The method according to claim 6, characterized in that at least one control parameter is transmitted via the human-machine-interface (55) and the restriction of the usage level of the range extender (10) is determined on the basis of the at least one control parameter.

8. A device (50) for determining an operating strategy for a range extender (10) of an electric vehicle (100) having an electric motor (20) and an electrical energy store (30), comprising:

a detector (51) which is designed to detect at least one operating parameter of a first type associated with the range extender (10) and at least one operating parameter of a second type associated with the electric motor (20) and/or the electrical energy store (30); and

a controller (52) which is designed to determine an operating strategy for the range extender (10) by restricting a usage level of the range extender (10) on the basis of the at least one detected operating parameter of the first type and/or the at least one detected operating parameter of the second type.

9. The device (50) according to claim 8, characterized in that the restriction of the usage level of the range extender (10) includes a limiting of a maximum power output of the range extender (10).

10. The device according to claim 8, further comprising a human-machine-interface (55) which is designed to display the determined operating strategy.

11. The device (50) according to claim 10, characterized in that the human-machine-interface (55) is designed to transmit at least one control parameter to the controller (52).