G-LIEV Electric, Long Range and Hybrid Vehicles Part 1

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is an Extended Range EV primarily powered by?

An internal combustion engine and a small electric motor

Only an internal combustion engine

An electric motor and a small internal combustion engine (correct)

Only an electric motor

What is the primary risk related to Lithium-Ion Batteries (LIBs)?

Short circuit

Thermal runaway (correct)

Overcharging

Electrical shock

What is the purpose of regenerative braking in a Plug-in Hybrid Vehicle?

To generate additional power for the internal combustion engine

To capture energy during deceleration and store it in the batteries (correct)

To improve the vehicle's acceleration

To reduce the vehicle's fuel efficiency

What is the definition of an Electric Vehicle (EV)?

A vehicle powered by an electric motor that draws electricity from a battery Signup and view all the answers

What is an Energy Storage System (ESS)?

A battery or group of batteries assembled to store energy Signup and view all the answers

What type of vehicle is a Plug-in Hybrid Vehicle?

A vehicle that is powered by both an electric motor and an internal combustion engine Signup and view all the answers

How many types of Energy Storage Systems (ESS) are there?

4 Signup and view all the answers

What is the trend of the use of LIBs as a source of power for consumer vehicles and/or large fleet vehicles?

Growing exponentially Signup and view all the answers

What is one of the hazards associated with damaged batteries?

Thermal runaway Signup and view all the answers

What is a potential risk when responding to electric vehicle fires?

Electrical shock Signup and view all the answers

Why should responders wear full PPE when working in a controlled area?

To protect against toxic gases Signup and view all the answers

What can occur when a Lithium-Ion Battery (LIB) ruptures?

It disperses toxic flammable gases Signup and view all the answers

What should responders do when arriving at an electric vehicle fire?

Chock the wheels and turn off the vehicle Signup and view all the answers

What is a characteristic of electric vehicle fires?

They produce toxic fumes Signup and view all the answers

What is a common issue with electric vehicle fires?

They can re-ignite unexpectedly Signup and view all the answers

Why should responders not touch the service plug?

It may be connected to the EV battery Signup and view all the answers

What type of fires can occur in electric vehicles?

Multiple classes of fires Signup and view all the answers

What is the purpose of an emergency cut loop in electric vehicles?

To disconnect the battery from the vehicle Signup and view all the answers

Study Notes

Electric Vehicles (EVs)

Defined as vehicles powered by an electric motor that draws electricity from a battery, which can be charged from an external source
Includes both all-electric vehicles and plug-in hybrid vehicles

Types of Electric Vehicles

Extended Range EV: has a small internal combustion engine to generate additional electric power
Plug-in Hybrid Vehicle: battery is recharged by regenerative braking or a plug-in charging station

Thermal Runaway

A phenomenon in which a lithium-ion cell enters an uncontrollable, self-heating state
Can result in dispersion of gases, ejection of shrapnel and particulates, fire, and deflagration

Energy Storage Systems (ESS)

A battery or group of batteries assembled to store energy to supply electrical energy at a later time
Four types: walk-in container systems, outdoor cabinet, indoor facility, and large and small vehicle batteries

Hazards of Lithium-Ion Batteries (LIBs)

May rupture and disperse toxic flammable gases and explode violently when ignited
Hazards include thermal conditions, physical damage, and electrical issues
Produce flammable and toxic gases, including hydrogen fluoride and phosphorus pentafluoride
Can re-ignite unexpectedly, even after all visible fire has been extinguished

Safety Considerations for Responders

Always wear full PPE, including SCBA, when working in a controlled area
Ensure vehicle is in park and turned off, and chock the wheels
Avoid touching the service plug, which poses a high risk of electrocution
Be aware of multiple classes of fires, including Class A, B, C, and D
Risks for responders include electrical shock, high temperatures, toxic fumes, lithium burns, toxic runoff, and re-ignition