METHOD AND CHARGE CONTROL FOR PROLONGING THE USEFUL LIFE OF BATTERIES

• US 20120262125A1
• Filed: 08/26/2010
• Published: 10/18/2012
• Est. Priority Date: 10/19/2009
• Status: Abandoned Application

• Current Assignee: Gerard A. Messina
• Original Assignee: Gerard A. Messina
• Inventors: Fassnacht, Jochen, Norden, Roland
• Application Number:
  US13/500,124
• Publication Number:
  US 20120262125A1
• Time in Patent Office: Days
• US Class Current: 320/162
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B60L 58/16 responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
• CPC Class Codes: B60L 58/27 by heating
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H02J 7/0069 Charging or discharging for charge maintenance, battery initiation or rejuvenation
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A method for prolonging the service life of a traction battery of an electric-powered or hybrid vehicle. The method includes recording at least one driving phase selection that encompasses a travel duration, a start of driving, or both; and recording an instantaneous state of charge of the traction battery. At least one aging parameter is minimized that encompasses the time interval between a charging process and the start of driving or the charging energy used to charge the traction battery in accordance with at least one driving phase selection; and the charging process is executed in accordance with the minimized aging parameter. Also, a charge control for implementing the method.

Claims

1-10. -10. (canceled)

11. A method for prolonging service life of a traction battery of an electric-powered or hybrid vehicle, comprising:

recording at least one driving phase selection that encompasses at least one of a travel duration and a start of driving;

recording an instantaneous state of charge of the traction battery;

minimizing at least one aging parameter that encompasses one of;

i) a time interval between a charging process and the start of driving, or ii) a charging energy used to charge the traction battery in accordance with at least one driving phase selection; and

executing the charging process in accordance with the minimized aging parameter.

12. The method as recited in claim 11, wherein the travel duration is recorded as the start of driving, the recording of the travel duration being provided by one of inputting an intended travel range or by retrieving at least one travel range of past drives;

and the minimizating being provided by minimizing the charging energy on the basis of the travel range, the charging energy being estimated as a function of the travel range by a logic operation that is provided by one of an approximation formula, a ratio of state-of-charge reduction to the distance traveled in a past drive, an interpolation, or by a look-up table, and the executing of the charging process encompassing;

charging the traction battery one of using the minimized charging energy or using the minimized charging energy that is increased by an availability safety margin.

13. The method as recited in claim 11, wherein the start of driving is recorded as the driving phase selection, the recording of the start of driving being provided one of by inputting an intended start of driving or by retrieving at least one start of driving of past drives;

and the minimizating being provided in that a time interval until a beginning of the charging process is minimized on the basis of the start of driving and an estimated charging duration that is estimated as a function of a charge deficit and an available charging power, the charge deficit corresponding to a difference between a specified minimum state of charge and an instantaneous state of charge.

14. The method as recited in claim 13, wherein the minimum state of charge is estimated as a function of a travel range by a logic operation between the minimum state of charge and the travel range that is provided by one of an approximation formula, a ratio of state-of-charge reduction to a distance traveled in a past drive, an interpolation, or a look-up table.

19. The charge control as recited in claim 12, further comprising:

a memory adapted to store values of one of past recorded travel durations or start-of-driving points in time, to transmit them in interpolated or averaged form to one of the input interface or to the minimization device in order to consider at least one of past travel durations and start-of-driving points in time in the minimization in accordance with the driving phase selection.

20. The charge control as recited in claim 19, further comprising:

a clock adapted to transmit a current clock time to the minimization device.

18. A charge control for a traction battery of an electric-powered or hybrid vehicle, comprising:

an input interface adapted for inputting a driving phase selection that encompasses at least one of a travel duration and a start of driving;

a state-of-charge detection device adapted to record an instantaneous state of charge of the traction battery;

a minimization device adapted to minimize an aging parameter that encompasses one of a time interval between a charging process and the start of driving, or the charging energy which is to be used to charge the traction battery in accordance with the driving phase selection and the state of charge, the minimization device adapted to optimize the time interval until at least one of a charging process in accordance with the travel duration and the start of driving, for optimizing the charging energy in accordance with the travel duration; and

an output adapted to output one of a charging signal or a charging current in accordance with the optimized aging parameter.