Prioritized charging of an energy storage system of a vehicle

A vehicle comprising:

• an engine configured to drive a front-end accessory drive and a tractive element;
• an energy storage system comprising a battery and a controller configured to control a flow of electrical energy to and from the energy storage system;
• a first generator electrically coupled to the energy storage system and configured to be selectively driven by the front-end accessory drive to generate electrical energy and supply energy to the energy storage system to charge the battery;
• a second generator electrically coupled to the energy storage system and configured to be selectively driven by the engine to generate electrical energy and supply energy to the energy storage system to charge the battery, wherein the controller is configured to supply energy generated by the first generator to the energy storage system only when power generated by the second generator and supplied to the energy storage system exceeds a first amount;
• and
• a power takeoff, wherein the controller is configured to selectively couple the second generator to the front-end accessory drive via the power takeoff such that the second generator drives the front-end accessory drive.

A vehicle comprising:

• an engine configured to drive a front-end accessory drive and a tractive element;
• an energy storage system comprising a battery and a controller;
• a first motor/generator electrically coupled to the energy storage system and configured to selectively (a) be driven by the front-end accessory drive to generate electrical energy and supply energy to the energy storage system to charge the battery and (b) drive the front-end accessory drive using energy from the energy storage system;
• a second motor/generator electrically coupled to the energy storage system and configured to selectively (a) be driven by the engine to generate electrical energy and supply energy to the energy storage system to charge the battery and (b) drive the tractive element using energy from the energy storage system;
• a power takeoff, wherein the controller is configured to selectively couple the second motor/generator to the front-end accessory drive via the power takeoff such that the second motor/generator drives the front-end accessory drive;
• and
• a user interface communicatively coupled to the controller, the controller configured to receive a user input via the user interface and to control flow of energy to and from the energy storage system, the first motor/generator, and the second motor/generator based on the user input, wherein the user input comprises a selection of one of (i) the first motor/generator (ii) the second motor/generator, or (iii) both the first motor/generator and the second motor/generator, and the controller is configured to supply energy from the selected motor/generator or motor/generators to the energy storage system in response to receiving the user input.

A vehicle comprising:

• an engine configured to drive a front-end accessory drive and a tractive element;
• an energy storage system comprising a battery and a controller;
• a first motor/generator electrically coupled to the energy storage system and configured to selectively (a) be driven by the front-end accessory drive to generate electrical energy and supply energy to the energy storage system to charge the battery and (b) drive the front-end accessory drive using energy from the energy storage system;
• a second motor/generator electrically coupled to the energy storage system and configured to selectively (a) be driven by the engine to generate electrical energy and supply energy to the energy storage system to charge the battery and (b) drive the tractive element using energy from the energy storage system;
• a power takeoff, wherein the controller is configured to selectively couple the second motor/generator to the front-end accessory drive via the power takeoff such that the second motor/generator drives the front-end accessory drive;
• and
• a user interface communicatively coupled to the controller, the controller configured to receive a user input via the user interface and to control a flow of energy to and from the energy storage system, the first motor/generator, and the second motor/generator based on the user input, wherein:
• the user input comprises an indication of a preferred operating mode, the preferred operating mode selected from a list comprising a “standard charging mode” and a “rapid charging mode”;
• wherein in the “standard charging mode”, the controller is configured to cause only the second motor/generator to supply energy to the energy storage system;
• and
• in the “rapid charging mode”, the controller is configured to cause both the second motor/generator and the first motor/generator to supply energy to the energy storage system.

A charging system for a vehicle, the charging system comprising:

• an energy storage system comprising a battery pack and a controller configured to control a flow of electrical energy to and from the energy storage system;
• a first generator configured to be coupled to a front-end accessory drive of the vehicle;
• a second generator configured to be coupled to an engine of the vehicle;
• and
• a power takeoff, wherein the controller is configured to selectively couple the second generator to the front-end accessory drive via the power takeoff such that the second generator drives the front-end accessory drive, wherein the controller is configured to:
• selectively control the first generator to generate power to charge the battery pack when the front-end accessory drive is driven by the engine;
• selectively control the second generator to generate power to charge the battery pack when the second generator is driven by the engine;
• and
• supply power generated by the first generator to the energy storage system only when the power generated by the second generator and supplied to the energy storage system exceeds a first amount.

A charging system for a vehicle, the charging system comprising:

• an energy storage system comprising a battery pack and a controller configured to control a flow of electrical energy to and from the energy storage system;
• a first generator configured to be coupled to a front-end accessory drive of the vehicle;
• a second generator configured to be coupled to an engine of the vehicle;
• and
• a power takeoff, wherein the controller is configured to selectively couple the second generator to the front-end accessory drive via the power takeoff such that the second generator drives the front-end accessory drive, wherein the controller is configured to:
• selectively control the first generator to generate power to charge the battery pack when the front-end accessory drive is driven by the engine;
• selectively control the second generator to generate power to charge the battery pack when the second generator is driven by the engine;
• and
• control the first generator to generate power to charge the battery pack only when the second generator is generating a maximum amount of power.