DIAGNOSIS APPARATUS FOR VEHICLE BATTERY

• US 20130317690A1
• Filed: 10/17/2011
• Published: 11/28/2013
• Est. Priority Date: 11/10/2010
• Status: Abandoned Application

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Fujita, Takeshi, Hirose, Hideaki, Hidaka, Masanobu, Goto, Hironao, Sakurai, Toshimine, Shimayama, Takashi
• Application Number:
  US13/881,529
• Publication Number:
  US 20130317690A1
• Time in Patent Office: Days
• US Class Current: 701/29.2
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 1/04 fed by the power supply line
• CPC Class Codes: B60L 15/2009 for braking
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/34 Cabin temperature
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2240/662 Temperature
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 3/12 Recording operating variables ; Monitoring of operating variables
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• 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 58/20 : having different nominal voltages
• CPC Class Codes: B60L 58/26 : by cooling
• CPC Class Codes: B60L 7/14 : for vehicles propelled by ac motors
• CPC Class Codes: G01R 31/3648 : comprising digital calculation means, e.g. for performing an algorithm
• CPC Class Codes: G01R 31/392 : Determining battery ageing or deterioration, e.g. state of health
• 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 10/4285 : Testing apparatus
• CPC Class Codes: H01M 10/44 : Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 10/443 : in response to temperature
• 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 10/486 : for measuring temperature
• CPC Class Codes: H01M 2220/20 : Batteries in motive systems, e.g. vehicle, ship, plane
• 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
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles

Abstract

A vehicle battery diagnosis apparatus is provided that diagnoses a history of a usage state of a secondary battery of a vehicle and that presents a suppression measure against battery degradation. The vehicle battery diagnosis apparatus includes a storage unit and a diagnosis unit. The storage unit stores an alternative suppression measure for a factor responsible for degradation of the secondary battery. The diagnosis unit prohibits presentation of the alternative suppression measure as a suppression measure upon determining the alternative suppression measure fails to satisfy a prescribed presentation criterion.

Claims

1. A vehicle battery diagnosis apparatus that diagnoses a secondary batter mounted, a history of usage state of a secondary battery of a vehicle, and that presents a suppression measure against battery degradation, the vehicle battery diagnosis apparatus comprising:

a storage unit that stores an alternative suppression measure for a factor responsible for degradation of the secondary battery; and

a diagnosis unit that prohibits presentation of the alternative suppression measure as the suppression measure upon determining the alternative suppression measure fails to satisfy a prescribed presentation criterion.

2. The vehicle battery diagnosis apparatus according to claim 1, further comprising:

a degradation degree calculation unit that receives history data about a usage state related to a factor responsible for degradation of the secondary battery and that calculates degrees of battery degradation by using the history data about the usage state; and

an extraction unit that extracts the alternative suppression measure from the storage unit for a factor which exceeds a prescribed allowable value among the calculated degrees of degradation.

3. The vehicle battery diagnosis apparatus according to claim 1, wherein

the factor responsible for degradation of the secondary battery includes a battery temperature, an SOC at the time of charging, and the number of times charging has been performed,

the battery temperature includes a battery temperature at the start of charging, a quick charging frequency, an outside air temperature, a battery temperature at the start of driving, and an output limitation frequency of the battery,

the SOC at the time of charging includes an SOC at the start of charging and an SOC when the battery is not being used, and

the number of times charging has been performed includes the number of times normal charging or quick charging has been performed.

4. The vehicle battery diagnosis apparatus according to claim 1, wherein

the diagnosis unit sets, as the prescribed presentation criterion, whether or not a function of the vehicle is impaired, and

the diagnosis unit prohibits presentation of the alternative suppression measure if the alternative suppression measure impairs a function of the vehicle, and permits presentation of the alternative suppression measure if the alternative suppression measure impairs a performance of the vehicle but does not impair a function of the vehicle.

5. The vehicle battery diagnosis apparatus according to claim 4, wherein

the diagnosis unit prohibits presentation of an alternative suppression measure which prohibits use or parking of the vehicle, an alternative suppression measure which prohibits charging of the battery, and an alternative suppression measure related to a natural environment, because the alternative suppression measures impair a function of the vehicle.

6. The vehicle battery diagnosis apparatus according to claim 2, wherein

the prescribed allowable value is arbitrarily set.

7. The vehicle battery diagnosis apparatus according to claim 2, wherein

the degradation degree calculation unit calculates, as the degree of battery degradation, a quick charging frequency which is defined by (Nq/N)×

100, where Nq represents the number of times quick charging has been performed, and N represents a total number of times charging has been performed.

8. The vehicle battery diagnosis apparatus according to claim 2, wherein

the degradation degree calculation unit calculates, as the degree of battery degradation, a charge level frequency at a time of start of charging which is defined by ∫

(Fn×

α

n)dSOC, where Fn represents a charging frequency in each SOC at the start of charging, and α

n represents a weight coefficient of each SOC.

9. The vehicle battery diagnosis apparatus according to claim 2, wherein

the degradation degree calculation unit calculates, as the degree of battery degradation, a power consumption frequency which is defined by W×

β

, where W represents average output power of the battery during certain driving, and β

represents a weight coefficient.

10. The vehicle battery diagnosis apparatus according to claim 2, wherein

the degradation degree calculation unit calculates, as the degree of battery degradation, a left-at-high-charge-level duration rate which is defined by t/t0, where t represents a time period over which the battery is left unused in a state of a certain SOC or more, and t0 represents an elapsed time from a manufacture date of the battery to the present.

11. The vehicle battery diagnosis apparatus according to claim 10, further comprising:

total degradation degree presentation unit for presenting a total degradation degree which is defined by A×

a+B×

b+C×

c+D×

d in a case where the quick charging frequency A and the coefficient thereof a, the charge level frequency at the start of charging B and the coefficient thereof b, the power consumption frequency C and the coefficient thereof c, the left-at-high-charge-level duration rate D and the coefficient thereof d, and a+b+c+d=1.

12. The vehicle battery diagnosis apparatus according to claim 1, further comprising:

an update unit that externally receives and updates the alternative suppression measure stored in the storage unit, the prescribed allowable value for the extraction unit, and the prescribed presentation criterion for the diagnosis unit.

13. A vehicle including the vehicle battery diagnosis apparatus according to claim 1 mounted therein.

14. An external information center including the vehicle battery diagnosis apparatus according to claim 1 installed therein.

15. The vehicle battery diagnosis apparatus according to claim 2, wherein

the factor responsible for degradation of the secondary battery includes a battery temperature, an SOC at the time of charging, and the number of times charging has been performed,

the battery temperature includes a battery temperature at the start of charging, a quick charging frequency, an outside air temperature, a battery temperature at the start of driving, and an output limitation frequency of the battery,

the SOC at the time of charging includes an SOC at the start of charging and an SOC when the battery is not being used, and

the number of times charging has been performed includes the number of times normal charging or quick charging has been performed.

16. The vehicle battery diagnosis apparatus according to claim 2, wherein

the diagnosis unit sets, as the prescribed presentation criterion, whether or not a function of the vehicle is impaired, and

the diagnosis unit prohibits presentation of the alternative suppression measure if the alternative suppression measure impairs a function of the vehicle, and permits presentation of the alternative suppression measure if the alternative suppression measure impairs a performance of the vehicle but does not impair a function of the vehicle.

17. The vehicle battery diagnosis apparatus according to claim 16, wherein

the diagnosis unit prohibits presentation of an alternative suppression measure which prohibits use or parking of the vehicle, an alternative suppression measure which prohibits charging of the battery, and an alternative suppression measure related to a natural environment, because the alternative suppression measures impair a function of the vehicle.

18. The vehicle battery diagnosis apparatus according to claim 3, wherein

the diagnosis unit sets, as the prescribed presentation criterion, whether or not a function of the vehicle is impaired, and

the diagnosis unit prohibits presentation of the alternative suppression measure if the alternative suppression measure impairs a function of the vehicle, and permits presentation of the alternative suppression measure if the alternative suppression measure impairs a performance of the vehicle but does not impair a function of the vehicle.

19. The vehicle battery diagnosis apparatus according to claim 18, wherein

the diagnosis unit prohibits presentation of an alternative suppression measure which prohibits use or parking of the vehicle, an alternative suppression measure which prohibits charging of the battery, and an alternative suppression measure related to a natural environment, because the alternative suppression measures impair a function of the vehicle.

20. The vehicle battery diagnosis apparatus according to claim 1, further comprising:

an output unit connected to the diagnosis unit, the output unit selectively outputting the alternative suppression measure.