What prevents high-voltage batteries in a hybrid vehicle from overheating?

In hybrid vehicles, the prevention of high-voltage battery overheating is primarily managed by a specialized cooling system that includes components such as a blower motor. The blower motor is responsible for directing air over the battery to help dissipate heat generated during charging and discharging cycles. This active cooling helps maintain an optimal operating temperature for the battery, ensuring its efficiency and longevity.

While the other options—exhaust systems, radiator fans, and turbos—are critical in managing temperatures in various vehicle systems, they do not directly contribute to the cooling of high-voltage batteries. The exhaust system focuses on expelling combustion gases, the radiator fan aids in cooling the engine's coolant, and the turbocharger enhances engine performance by forcing more air into the combustion process. Therefore, these components are not involved in managing the battery's temperature and efficiency in the same way that the blower motor is.