Multifuel adaptable series hybrid vehicle
A system and method for managing a series hybrid powertrain in an electric vehicle platform includes a battery, at least one traction electric motor, an internal combustion engine/motor generator combination and a vehicle supervisory controller. The battery is configured to supply power to the electric motor, and the electric motor is configured to drive the wheels of the electric vehicle. The internal combustion engine/motor generator is configured to generate electricity to recharge the battery pack and optionally provide additional power to the electric motor when necessary. The vehicle supervisory controller is configured to manage the operation of the series hybrid powertrain. The controller is programmed with a set of algorithms that determine the optimal use of the battery, electric motor, and internal combustion engine/motor generator based on various factors, including but not limited to the current state of the battery pack charge, driving conditions, and electric motor power requirements.
1 . A series hybrid electric vehicle, comprising:
an energy storage system;
a motor generator comprising an internal combustion engine (ICE); and
a vehicle supervisor controller configured to control activation of the ICE to recharge the energy storage system based on whether a silent mode of operation is set, the vehicle supervisor controller, when in the silent mode of operation, permitting the motor generator to propel the series hybrid electric vehicle without activation of the ICE unless necessary to propel the series hybrid electric vehicle to take evasive action.
2 . The series hybrid electric vehicle according to claim 1 , wherein, in multiple modes of operation, the vehicle supervisor controller is configured to control activation of the ICE to recharge the energy storage system based on a charge state of the energy storage system reaching a predetermined level.
3 . The series hybrid electric vehicle according to claim 2 , wherein, in the silent mode of operation, the predetermined level is a state of charge inhibiting evasive action by the series hybrid electric vehicle.
4 . The series hybrid electric vehicle according to claim 2 , wherein, in at least one mode of operation other than the silent mode of operation, the predetermined level is based on at least a speed of the series hybrid electric vehicle.
5 . The series hybrid electric vehicle according to claim 4 , wherein, in the at least one mode of operation other than the silent mode of operation, the predetermined level is based on a driver request signal.
6 . The series hybrid electric vehicle according to claim 4 , wherein, in the at least one mode of operation other than the silent mode of operation, the predetermined level is based on weather conditions.
7 . The series hybrid electric vehicle according to claim 4 , wherein the at least one mode of operation other than the silent mode of operation includes a normal mode of operation.
8 . The series hybrid electric vehicle according to claim 1 , wherein the energy storage system includes a battery pack.
9 . The series hybrid electric vehicle according to claim 1 , further comprising a user interface configured to adjust settings of the vehicle supervisor controller.
10 . The series hybrid electric vehicle according to claim 9 , wherein the user interface is configured to override the vehicle supervisor controller.
11 . A method of operating a series hybrid electric vehicle including an energy storage system and a motor generator comprising an internal combustion engine (ICE), the method comprising:
operating a vehicle supervisor controller to control activation of the ICE to recharge the energy storage system based on whether a silent mode of operation is set, the vehicle supervisor controller, when in the silent mode of operation, permitting the motor generator to propel the series hybrid electric vehicle without activation of the ICE unless necessary to propel the series hybrid electric vehicle to take evasive action.
12 . The method according to claim 11 , further comprising:
operating the vehicle supervisory controller in multiple modes of operation to control activation of the motor generator to recharge the energy storage system based on a charge state of the energy storage system reaching a predetermined level.
13 . The method according to claim 12 , wherein, in the silent mode of operation, the predetermined level is a state of charge inhibiting evasive action by the series hybrid electric vehicle.
14 . The method according to claim 12 , wherein, in at least one mode of operation other than the silent mode of operation, the predetermined level is based on at least a speed of the series hybrid electric vehicle.
15 . The method according to claim 14 , wherein, in the at least one mode of operation other than the silent mode of operation, the predetermined level is based on a driver request signal.
16 . The method according to claim 14 , wherein, in the at least one mode of operation other than the silent mode of operation, the predetermined level is based on weather conditions.
17 . The method according to claim 14 , wherein the at least one mode of operation other than the silent mode of operation includes a normal mode of operation.
18 . The method according to claim 11 , wherein the energy storage system includes a battery pack.
19 . The method according to claim 11 , further comprising:
using a user interface to adjust settings of the vehicle supervisor controller to control activation of the motor generator to recharge the energy storage system.
20 . The method according to claim 19 , further comprising using the user interface to override the vehicle supervisor controller.