Method for electrically regenerating an energy store

• US 20150061550A1
• Filed: 08/27/2014
• Published: 03/05/2015
• Est. Priority Date: 08/30/2013
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: SCHULZ, Udo, Pflueger, Jochen, Kniep, Stefan Andreas
• Application Number:
  US14/469,797
• Publication Number:
  US 20150061550A1
• Time in Patent Office: Days
• US Class Current: 318/376
• CPC Class Codes: B60L 2240/62 Vehicle position
• CPC Class Codes: B60L 50/10 using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
• CPC Class Codes: B60L 58/24 for controlling the temperature of batteries
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/0069 Charging or discharging for charge maintenance, battery initiation or rejuvenation
• CPC Class Codes: H02P 3/14 by regenerative braking
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• 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
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A method for electrically regenerating an electrical energy store in a motor vehicle which includes a recuperation device and/or other energy-saving devices, including the following: based on information concerning an upcoming travel route, it is ascertained whether a suitable opportunity exists for an electrical regeneration on the upcoming travel route, and when this is the case: a first energy loss is determined which occurs during the electrical regeneration; a second energy loss is determined which results on a plurality of previously determined and defined routes due to aging effects of the energy store which are reversible with the aid of regeneration; the first energy loss and the second energy loss are compared, and a regeneration is carried out only when the second energy loss is greater than the first energy loss.

Claims

1. A method for electrically regenerating an electrical energy store in a motor vehicle which includes at least one of a recuperation device and at least one other energy-saving device, the method comprising:

ascertaining, based on information concerning an upcoming travel route, whether a suitable opportunity exists for an electrical regeneration on the upcoming travel route; and

when this is the case, performing the following;

determining a first energy loss which occurs during the electrical regeneration;

determining a second energy loss which results on a plurality of previously determined and defined routes due to aging effects of the energy store which are reversible with the aid of regeneration;

comparing the first energy loss and the second energy loss; and

performing a regeneration only when the second energy loss is greater than the first energy loss.

2. The method of claim 1, wherein the information concerning an upcoming travel route includes the following:

predictive data, adaptive data, and/or speculative data.

3. The method of claim 1, wherein the previously determined and defined routes are taken from a memory which contains the navigation data and/or vehicle data and/or external data.

4. The method of claim 1, wherein the energy store is a lead-acid battery.

5. The method of claim 4, wherein the method is started only when the capacity of the lead-acid battery is below a predefinable threshold value.

6. The method of claim 1, wherein the method is started as a function of at least one of the ambient temperature and the temperature at the energy store.

7. The method of claim 1, wherein the method is started as a function of at least one of predicted changes in the ambient temperature, predicted weather conditions, and the predicted temperature at the energy store.

8. The method of claim 1, wherein the assumptions necessary for comparing the first energy loss to the second energy loss are automatically modified during operation when deviations from assumptions are identified.

12. The method of claim 1, wherein the information concerning an upcoming travel route includes the following:

predictive data, in particular of a planned route, and/or adaptive data, in particular the recognition of previously traveled routes, and/or speculative data, in particular likely traveled routes based on roadway types and driver behavior.

13. The method of claim 1, wherein the previously determined and defined routes are taken from a memory which contains the navigation data and/or vehicle data and/or external data, in particular concerning the traffic volume, stopping operations which have occurred, speeds driven, and accelerations which have occurred during previous driving operations.

9. A computer readable medium having a computer program, which is executable by a processor, comprising:

a program code arrangement having program code for electrically regenerating an electrical energy store in a motor vehicle which includes at least one of a recuperation device and at least one other energy-saving device, by performing the following;

ascertaining, based on information concerning an upcoming travel route, whether a suitable opportunity exists for an electrical regeneration on the upcoming travel route; and

when this is the case, performing the following;

determining a first energy loss which occurs during the electrical regeneration;

determining a second energy loss which results on a plurality of previously determined and defined routes due to aging effects of the energy store which are reversible with the aid of regeneration;

comparing the first energy loss and the second energy loss; and

performing a regeneration only when the second energy loss is greater than the first energy loss.

10. A data carrier having a computer program, which is executable by a processor, comprising:

a program code arrangement having program code for electrically regenerating an electrical energy store in a motor vehicle which includes at least one of a recuperation device and at least one other energy-saving device, by performing the following;

ascertaining, based on information concerning an upcoming travel route, whether a suitable opportunity exists for an electrical regeneration on the upcoming travel route; and

when this is the case, performing the following;

determining a first energy loss which occurs during the electrical regeneration;

determining a second energy loss which results on a plurality of previously determined and defined routes due to aging effects of the energy store which are reversible with the aid of regeneration;

comparing the first energy loss and the second energy loss; and

performing a regeneration only when the second energy loss is greater than the first energy loss.

11. A control unit to control an electrical regeneration of an electrical energy store, comprising:

a regenerating arrangement for electrically regenerating an electrical energy store in a motor vehicle which includes at least one of a recuperation device and at least one other energy-saving device, which performs the following;

ascertaining, based on information concerning an upcoming travel route, whether a suitable opportunity exists for an electrical regeneration on the upcoming travel route; and

when this is the case, performing the following;

determining a first energy loss which occurs during the electrical regeneration;

determining a second energy loss which results on a plurality of previously determined and defined routes due to aging effects of the energy store which are reversible with the aid of regeneration;

comparing the first energy loss and the second energy loss; and

performing a regeneration only when the second energy loss is greater than the first energy loss.