Traction battery thermal management method and system

Abstract

An exemplary method includes circulating a fluid along a fluid circuit that extends through a heat exchanger and a battery pack, and, during the circulating, heating the fluid with a flow of exhaust gas and using the fluid to heat the battery pack. An exemplary vehicle system includes a battery pack, a heat exchanger, a fluid circuit configured to circulate a fluid between the battery pack and the heat exchanger, and a valve moveable back and forth between a heating position and a cooling position. The valve in the heating position permits more flow along an exhaust circuit to heat the fluid in the fluid circuit than the valve in the cooling position.

Dependencies are inferred from the claim text.