Method and regulating device for regulating a hybrid drive of a hybrid electric motor vehicle

• US 9,796,393 B2
• Filed: 02/08/2013
• Issued: 10/24/2017
• Est. Priority Date: 03/27/2012
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Roesch, Alexander, Kieser, Joerg, Maass, Alexander
• Primary Examiner(s): HEINLE, COURTNEY D
• Application Number:
  US14/388,835
• Publication Number:
  US 20150051774A1
• Time in Patent Office: 1,719 Days
• Field of Search: 701 22
• CPC Class Codes: B60K 6/448 Electrical distribution type
• CPC Class Codes: B60K 6/52 Driving a plurality of drive axles, e.g. four-wheel drive
• 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 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 2540/215 Selection or confirmation of options
• CPC Class Codes: B60W 2710/244 Charge state
• CPC Class Codes: B60W 50/082 Selecting or switching between different modes of propelling
• CPC Class Codes: B60W 50/085 Changing the parameters of the control units, e.g. changing limit values, working points by control input
• CPC Class Codes: Y02T 10/62 Hybrid vehicles

Abstract

The invention relates to a method for regulating a hybrid drive of a hybrid electric motor vehicle which has an electric energy store (HV), said method having the following steps: determining (S1) criteria for engaging the electric drive (EM1; EM1, EM2) and/or the internal combustion engine (VM) using an adjustable drive mode, wherein a part of a battery capacity of the electric energy store (HV) is reserved using a variable setting; and regulating (S2) the engagement of the electric drive (EM1; EM1, EM2) and/or the internal combustion engine (VM) of the hybrid electric motor vehicle using the determined criteria and the variable setting.

Claims

1. A method for regulating a hybrid drive of a hybrid electric motor vehicle which has an electric energy store (HV), having the steps:

defining (S1) criteria for actuating an electric drive (EM1;

EM1, EM2) and/or an internal combustion engine (VM) of the hybrid electric motor vehicle on the basis of an adjustable driving mode, wherein a portion of a battery capacity of the electric energy store (HV) is reserved by means of a variable setting; and

regulating (S2) actuation of the electric drive (EM1;

EM1, EM2) and/or of the internal combustion engine (VM) of the hybrid electric motor vehicle by means of the defined criteria and by means of the variable setting; and

wherein a demand, determined by a sensor device, for an increase in traction of the hybrid electric motor vehicle is used as one of the criteria for the actuation of the electric drive (EM1;

EM1, EM2) and/or of the internal combustion engine (VM), and

wherein availability of all-wheel drive is indicated on the basis of the reserved portion of the battery capacity of the electric energy store (HV).

2. The method as claimed in claim 1, wherein the electric drive (EM1;

EM1, EM2) of the hybrid electric motor vehicle is configured as an actuable electric drive which permits all-wheel drive of the hybrid electric motor vehicle.

3. The method as claimed in claim 1, wherein the adjustable driving mode is selected from a plurality of driving modes by the driver.

4. The method as claimed in claim 1, wherein between zero percent and 30 percent of the battery capacity of the electric energy store (HV) is used as the portion of the battery capacity of the electric energy store (HV) which is reserved for a motor mode of a first electric drive unit (EM1) and/or of a second electric drive unit (EM2).

5. The method as claimed in claim 1, wherein the adjustable driving mode forcibly brings about a motor mode of a first electric drive unit (EM1).

6. The method as claimed in claim 1, wherein the availability of all-wheel drive is displayed and an anticipated availability period of the all-wheel drive is also displayed.

7. The method as claimed in claim 1, wherein the electric drive (EM1;

EM1, EM2) has only one electric drive unit (EM1).

8. The method as claimed in claim 1, wherein the portion of the battery capacity of the electric energy store (HV) which is to be reserved is determined on the basis of sensor data.

10. The method as claimed in claim 1, wherein between zero percent and 70 percent of the battery capacity of the electric energy store (HV) is used as the portion of the battery capacity of the electric energy store (HV) which is reserved for a motor mode of a first electric drive unit (EM1) and/or of a second electric drive unit (EM2).

11. The method as claimed in claim 1, wherein between zero percent and 100 percent of the battery capacity of the electric energy store (HV) is used as the portion of the battery capacity of the electric energy store (HV) which is reserved for a motor mode of a first electric drive unit (EM1) and/or of a second electric drive unit (EM2).

9. A regulating device for regulating a hybrid drive of a hybrid electric motor vehicle which has an electric energy store (HV), wherein the regulating device is configured:

to define criteria for actuating an electric drive (EM1;

EM1, EM2) and/or an internal combustion engine (VM) of the hybrid electric motor vehicle on the basis of an adjustable driving mode, wherein a portion of a battery capacity of the electric energy store (HV) is reserved by means of a variable setting; and

to regulate actuation of the electric drive (EM1;

EM1, EM2) and/or of the internal combustion engine (VM) of the hybrid electric motor vehicle by means of the defined criteria and by means of the variable setting; and

wherein a demand, determined by a sensor device, for an increase in traction of the hybrid electric motor vehicle is used as one of the criteria for the actuation of the electric drive (EM1;

EM1, EM2) and/or of the internal combustion engine (VM)), and

wherein availability of all-wheel drive is indicated on the basis of the reserved portion of the battery capacity of the electric energy store (HV).