Mar 24, 2026

US12583309 - Hybrid power system for a military vehicle

A military vehicle includes an engine, an energy storage system comprising a battery, and a motor/generator electrically coupled to the energy storage system and configured to draw power from the energy storage system to drive a tractive element of the military vehicle. The engine is configured to drive the tractive element cooperatively with the motor/generator, but is not configured to drive the tractive element without the motor/generator.

Assignee: OSHKOSH DEFENSE, LLC
Inventors: Chad Smith, Nader Nasr, Rachell Harsh, Mike J. Bolton, Bradon Zeitler, Ryan Crabtree
Filing date: 2022-08-12

This patent describes a military vehicle that utilizes a hybrid power system, combining an energy storage battery with a motor/generator to drive its tractive elements, while an auxiliary power unit with an engine generates additional electrical power. The design allows for the auxiliary power unit to be removable and installable, ensuring the vehicle operates without a traditional engine that mechanically drives the tractive elements.

Claim 1

1 . A military vehicle comprising: an energy storage system comprising a battery; a first motor/generator electrically coupled to the energy storage system and configured to draw power from the energy storage system to drive a tractive element of the military vehicle; an auxiliary power unit comprising: an engine; a generator configured to generate electrical power from rotational energy generated by the engine; and first electrical terminals configured to transmit the electrical power from the generator out of the auxiliary power unit; and an auxiliary power unit receiver comprising second electrical terminals electrically coupled to the energy storage system and configured to receive the electrical power from the first electrical terminals, wherein the auxiliary power unit is removable from and installable into the auxiliary power unit receiver; wherein the military vehicle does not include an engine operable to mechanically drive the tractive element. an energy storage system comprising a battery; a first motor/generator electrically coupled to the energy storage system and configured to draw power from the energy storage system to drive a tractive element of the military vehicle; an auxiliary power unit comprising: an engine; a generator configured to generate electrical power from rotational energy generated by the engine; and first electrical terminals configured to transmit the electrical power from the generator out of the auxiliary power unit; and an engine; a generator configured to generate electrical power from rotational energy generated by the engine; and first electrical terminals configured to transmit the electrical power from the generator out of the auxiliary power unit; and an auxiliary power unit receiver comprising second electrical terminals electrically coupled to the energy storage system and configured to receive the electrical power from the first electrical terminals, wherein the auxiliary power unit is removable from and installable into the auxiliary power unit receiver; wherein the military vehicle does not include an engine operable to mechanically drive the tractive element.

Google Patents

https://patents.google.com/patent/US12583309

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12583309