Control apparatus of electricity accumulation mechanism

• US 20050083017A1
• Filed: 10/12/2004
• Published: 04/21/2005
• Est. Priority Date: 10/20/2003
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Suzuki, Yusuke
• Granted Patent: US 7,482,779 B2
• Time in Patent Office: Days
• US Class Current: 320/128
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/0053 relating to fuel cells
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• 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 58/18 of two or more battery modules
• CPC Class Codes: B60L 58/24 for controlling the temperature of batteries
• 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 20/13 in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2510/246 Temperature
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/005 Detection of state of health [SOH]
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• 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 90/40 : Application of hydrogen technology to transportation, e.g. using fuel cells

Abstract

A hybrid ECU executes a program that includes the steps of: determining whether a deterioration degree of a battery is greater than a predetermined degree; when the deterioration degree of the battery is greater than the predetermined value, tightening the regulation of charging/discharging power to/from the battery; determining whether the deterioration degree of the battery is smaller than the predetermined value and; when the deterioration degree of the battery is smaller than the predetermined value, relaxing the regulation of charging/discharging power to/from the battery.

Claims

1. A control apparatus of an electricity accumulation mechanism mounted on a vehicle, comprising:

regulation means for regulating charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism;

detect means for detecting a value related to at least one of current values of charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism, temperature of said electricity accumulation mechanism and a rate of change in an acceleration pedal position;

storage means for storing a history related to said detected value;

determination means for determining a deterioration degree of said electricity accumulation mechanism based on said stored history; and

adjustment means for adjusting regulation by said regulation means based on said deterioration degree.

2. A control apparatus of an electricity accumulation mechanism mounted on a vehicle, comprising:

regulation means for regulating charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism;

detect means for detecting a value related to actuation of said electricity accumulation mechanism;

storage means for storing a history related to said detected value;

determination means for determining a deterioration degree of said electricity accumulation mechanism based on said stored history; and

relaxation means for relaxing regulation by said regulation means based on said deterioration degree.

3. The control apparatus of an electricity accumulation mechanism according to claim 2, wherein

said relaxation means includes means for relaxing said regulation when said deterioration degree is determined to be smaller than a predetermined degree.

4. The control apparatus of an electricity accumulation mechanism according to claim 2, further comprising

means for tightening said regulation when said deterioration degree is determined to be greater than a predetermined degree.

5. The control apparatus of an electricity accumulation mechanism according to claim 2, further comprising

calculation means for calculating a frequency of detecting a value in a predetermined range in relation to actuation of said electricity accumulation mechanism based on said stored history, wherein

said determination means includes means for determining that a deterioration degree of said electricity accumulation mechanism is smaller than a predetermined degree when said calculated frequency is less than a predetermined frequency.

6. The control apparatus of an electricity accumulation mechanism according to claim 2, further comprising

means for storing a map related to regulation of charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism, wherein

said regulation means includes means for regulating charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism based on said map, and

said relaxation means includes means for changing said map to relax said regulation.

7. The control apparatus of an electricity accumulation mechanism according to claim 2, wherein

the value related to actuation of said electricity accumulation mechanism is a value related to at least one of current values of charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism, temperature of said electricity accumulation mechanism and a rate of change in an acceleration pedal position.

8. A control apparatus of an electricity accumulation mechanism mounted on a vehicle, comprising:

a regulation unit regulating charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism;

a detect unit detecting a value related to at least one of current values of charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism, temperature of said electricity accumulation mechanism and a rate of change in an acceleration pedal position;

a storage unit storing a history related to said detected value;

a determination unit determining a deterioration degree of said electricity accumulation mechanism based on said stored history; and

an adjustment unit adjusting regulation by said regulation unit based on said deterioration degree.

9. A control apparatus of an electricity accumulation mechanism mounted on a vehicle, comprising:

a regulation unit regulating charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism;

a detect unit detecting a value related to actuation of said electricity accumulation mechanism;

a storage unit storing a history related to said detected value;

a determination unit determining a deterioration degree of said electricity accumulation mechanism based on said stored history; and

a relaxation unit relaxing regulation by said regulation unit based on said deterioration degree.

10. The control apparatus of an electricity accumulation mechanism according to claim 9, wherein

said relaxation unit relaxes said regulation when said deterioration degree is determined to be smaller than a predetermined degree.

11. The control apparatus of an electricity accumulation mechanism according to claim 9, further comprising

a tightening unit tightening said regulation when said deterioration degree is determined to be greater than a predetermined degree.

12. The control apparatus of an electricity accumulation mechanism according to claim 9, further comprising

a calculation unit calculating a frequency of detecting a value in a predetermined range in relation to actuation of said electricity accumulation mechanism, based on said stored history, wherein

said determination unit determines that a deterioration degree of said electricity accumulation mechanism is smaller than a predetermined degree when said calculated frequency is less than a predetermined frequency.

13. The control apparatus of an electricity accumulation mechanism according to claim 9, further comprising

a map storage unit storing a map related to regulation of charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism, wherein

said regulation unit regulates charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism based on said map, and

said relaxation unit changes said map to relax said regulation.

14. The control apparatus of an electricity accumulation mechanism according to claim 9, wherein

the value related to actuation of said electricity accumulation mechanism is a value related to at least one of current values of charging power to said electricity accumulation mechanism and discharging power from said electricity accumulation mechanism, temperature of said electricity accumulation mechanism and a rate of change in an acceleration pedal position.