METHOD FOR MANAGING A STATE OF CHARGE OF A BATTERY

• US 20160332531A1
• Filed: 01/15/2015
• Published: 11/17/2016
• Est. Priority Date: 01/20/2014
• Status: Abandoned Application

• Current Assignee: Renault Sas (Renault)
• Original Assignee: Renault Sas (Renault)
• Inventors: CHAZAL, Yann, TRINH, Do-Hieu, TOUSAINT, Philippe, UMLAWSKI, Mathieu
• Application Number:
  US15/111,404
• Publication Number:
  US 20160332531A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2260/50 by future state prediction
• CPC Class Codes: B60L 58/13 Maintaining the SoC within a determined range
• 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 58/24 for controlling the temperature of batteries
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 2010/4271 Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• 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: 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 managing a state of charge of a battery connected for supplying a power distribution network includes estimating a range of values of the state of charge of the battery minimizing a state of aging of the battery, charging or discharging the battery so as to reach an optimum value of state of charge included within the range of values, and prior to the estimating, detecting a state of non-use of the battery during which the battery is neither charged nor discharged.

Claims

1-12. -12. (canceled)

13. A method for managing a state of charge of a battery connected for supplying a power distribution network, the method comprising:

estimating a range of values of said state of charge of the battery minimizing a state of aging of the battery;

charging or discharging the battery so as to reach an optimum value of state of charge included within said range of values; and

prior to the estimating, detecting a state of non-use of the battery during which the battery is neither charged nor discharged.

14. The method for managing a state of charge of a battery as claimed in claim 13, wherein, during the detecting, an expiration of a predetermined period during which the battery is in the state of non-use is detected.

15. The method for managing a state of charge of a battery as claimed in claim 13, wherein said range of values minimizing the state of aging of the battery comprises a first minimum value and a second maximum value which vary as a function of a temperature associated with the battery.

16. The method for managing a state of charge of a battery as claimed in claim 15, wherein the temperature associated with the battery is an operating temperature of the battery.

17. The method for managing a state of charge of a battery as claimed in claim 15, wherein the temperature associated with the battery is an ambient temperature of a housing in which the battery is installed.

18. The method for managing a state of charge of a battery as claimed in claim 17, wherein further comprising:

estimating the temperature associated with the battery based on said ambient temperature and on information relating to an operation of the battery.

19. The method for managing a state of charge of a battery as claimed in claim 16, wherein, for a range of operating temperature of the battery between 10°

C. and 25°

C.;

the first minimum value is equal to 10%, and,

the second maximum value is equal to 70%.

20. The method for managing a state of charge of a battery as claimed in claim 16, wherein, for an operating temperature of the battery substantially equal to 45°

C.;

the first minimum value is equal to 50%, and,

the second maximum value is equal to 70%.

21. The method for managing a state of charge of a battery as claimed in claim 16, wherein, for an operating temperature of the battery substantially equal to 55°

C.;

the first minimum value is equal to 50%, and,

the second maximum value is equal to 70%.

22. The method for managing a state of charge of a battery as claimed in claim 13, further comprising prior to the detecting:

measuring the state of charge of a plurality of batteries; and

selecting said battery from said plurality of batteries.

23. The method for managing a state of charge of a battery as claimed in claim 13, further comprising:

determining the state of aging of the battery by collecting information relating to physical quantities of the battery.

24. A system for managing a state of charge of a battery, comprising:

means for estimating a range of values of said state of charge of the battery minimizing a state of aging of the battery;

means for charging or discharging the battery so as to reach an optimum value of state of charge included within said range of values; and

means for detecting, prior to the estimating, a state of non-use of the battery during which the battery is neither charged nor discharged.