METHOD AND DEVICE FOR MONITORING A HYBRID VEHICLE POWER STORAGE SYSTEM

• US 20110163724A1
• Filed: 09/22/2009
• Published: 07/07/2011
• Est. Priority Date: 09/23/2008
• Status: Abandoned Application

• Current Assignee: Peugeot Citroen Automobiles SA (Stellantis NV)
• Original Assignee: Peugeot Citroen Automobiles SA (Stellantis NV)
• Inventors: Dollinger, Nicolas, Mercier-Calvairac, Fabien, Migaud, Melaine, Robart, Nicolas
• Application Number:
  US13/119,085
• Publication Number:
  US 20110163724A1
• Time in Patent Office: Days
• US Class Current: 320/136
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/24 including control of energy storage means
• 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 20/19 for achieving enhanced acceleration
• CPC Class Codes: B60W 2510/244 Charge state

Abstract

In a hybrid vehicle system comprising an electric power storage system and an electric motor, the method includes a first step of allowing the electric power storage system to be discharged: upon detecting a condition of a charge of the electric power storage system that is greater than a first threshold to optimize power consumption; and upon detecting a condition of the charge of the electric power storage system that is greater than a second threshold to increase performance.

Claims

1-4. -4. (canceled)

5. A method for controlling an energy storage system for a hybrid vehicle that includes an electrical storage device and an electrical machine, said method comprising discharging the electrical storage device upon at least one of:

detection that a state of charge of the electrical storage device is greater than a first threshold for optimization of energy consumption of the vehicle; and

detection that the state of charge of the electrical storage device is greater than a second threshold for increasing performance of the vehicle, wherein the second threshold is fixed at a minimum energy value reserved for compensation of transitions.

6. The method according to claim 5, wherein the first threshold delimits an energy range of variable height above the second threshold.

7. A device for controlling an energy storage system for a hybrid vehicle that includes an electrical storage device (11) and an electrical machine (53), said device comprising:

a first threshold operable for authorizing optimization of energy consumption of the vehicle when a state of charge of the electrical storage device is greater than the first threshold; and

a second threshold operable for authorizing increased performance of the vehicle when the state of charge of the electrical storage device is greater than the second threshold, wherein the second threshold is fixed at a minimum energy value reserved for compensation of transitions.

8. The device according to claim 7, wherein the first threshold delimits an energy range of variable height above the second threshold.