Granted Patent B2

US 12,679,326 · App. 18/549,390 · Granted Jul 14, 2026

Inventors: Abdelkrim Moujib (Guyancourt, FR); Frederic Roudeau (Guyancourt, FR)

Assignee: AMPERE S.A.S.

B60W20/11B60W10/26B60W20/13B60W20/19B60W40/1005B60W40/13B60W2520/105B60W2552/15

Abstract

Claims (25)

1 . A method for detecting a state of excessive weight of a motor vehicle equipped with a power train comprising a traction battery, the method comprising:

selecting a determined number of phases of longitudinal acceleration of the vehicle, for each of which the longitudinal acceleration is greater than a longitudinal acceleration threshold value; and

for each selected longitudinal acceleration phase:

calculating an average value of a differential force which is equal to a value of traction efforts of the power train from which are subtracted a value of a resultant longitudinal acceleration force of the vehicle and a value of a sum of resisting efforts to which the vehicle is subjected while rolling,

calculating a statistical value from the calculated average values of the differential force, and

comparing the calculated statistical value with a threshold value of excessive weight of the vehicle,

wherein the vehicle is in a state of excessive weight when the statistical value is greater than the threshold value of excessive weight of the vehicle.

2 . The detection method as claimed in claim 1 , wherein the statistical value is an average of all the calculated average values of the differential force.

3 . The detection method as claimed in claim 1 , wherein the threshold value of longitudinal acceleration is greater than or equal to 0.5 m/s 2 .

4 . The detection method as claimed in claim 1 , wherein the selecting the longitudinal acceleration phases is disabled when a speed of the vehicle is greater than a speed threshold value.

5 . The detection method as claimed in claim 1 , wherein the number of longitudinal acceleration phases selected is a value associated with the motor vehicle.

6 . The detection method as claimed in claim 1 , wherein the resultant longitudinal acceleration force is defined by a product of a value of a constant value of a reference weight of the vehicle by the value of the longitudinal acceleration of the vehicle.

7 . The detection method as claimed in claim 1 , wherein the resisting efforts are defined by a sum of aerodynamic drag forces of the vehicle, of rolling resistance forces of the vehicle, and of forces linked to a gradient of a terrain.

8 . A method for managing a charge of a traction battery of a motor vehicle, comprising:

detecting a possible state of excessive weight of the vehicle; and

increasing, when the state of excessive weight is detected, an energy level stored in the traction battery to a charge threshold to respond to temporary vehicle rolling situations,

wherein the detecting includes

selecting a determined number of phases of longitudinal acceleration of the vehicle, for each of which the longitudinal acceleration is greater than a longitudinal acceleration threshold value; and

for each selected longitudinal acceleration phase:

calculating an average value of a differential force which is equal to a value of traction efforts of a power train from which are subtracted a value of a resultant longitudinal acceleration force of the vehicle and a value of a sum of resisting efforts to which the vehicle is subjected while rolling,

calculating a statistical value from the calculated average values of the differential force, and

comparing the calculated statistical value with a threshold value of excessive weight of the vehicle,

wherein the vehicle is in a state of excessive weight when the statistical value is greater than the threshold value of excessive weight of the vehicle.

9 . A power train comprising:

a heat engine and an electric motor associated with a traction battery, wherein the charge of the traction battery is controlled by the management method as claimed in claim 8 .

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (26)