Level 1 - Basics
High Voltage Safety and Hybrid Vehicle Systems (CESD-110)
Pre-requisite for all courses
- Explain and define the dangers of high voltage
- Review safe working practices and personal protective equipment
- Perform safe high voltage system disabling and re-enabling
- Introduction to hybrid/electric vehicle technology
- Overview of commonly used OEM vehicle systems and high voltage components
Hybrid and Electric Vehicle Introductory Overview (CESD-109)
- Define and compare hybrid, electric and traditional combustion engine vehicle technology
- Explore driver interfaces with operational and charging systems
- Discuss range concerns and charging options
- Explore main components of hybrid vehicles including low and high power systems
- Discuss the blending of power and electrical energy flows in hybrid and electric vehicles
- Investigate high voltage safety systems including high voltage interlock (HVIL), isolation resistance, high voltage system charging/discharging (passive and active) and associated diagnostic tools
- Analyze battery and transmission technologies used in hybrid and electric vehicles
- Review and demonstrate safe high voltage system disabling and re-enabling procedures
Level 2 - Intermediate
High Voltage Supporting Systems (CESD-112)
- Discuss technological and servicing differences of cabin heating and cooling systems found in hybrid/electric vehicles versus traditional internal combustion engine (ICE) vehicles
- Investigate thermal management systems and service
- Explore the operation and service of electric power steering and braking systems
- Analyze the power conversion process (DC to DC) for use in low voltage systems
- Review driver interfaces and experience options
- Examine isolation resistance and high voltage interlock (HVIL) diagnostic procedures
with supporting systems
Batteries and Charging Systems (CESD-111)
- Discuss battery technology and types commonly used across the automotive industry including nickel metal hydride (Ni-MH) and lithium ion (Li-ion)
- Compare energy storage and battery operation in Ni-MH, Li-ion and others
- Explore high voltage on-board and off-board charging systems
- Examine battery management systems and operation including charging systems, thermal management, and energy management
- Discuss battery service, cell balancing, state of charge (SOC) and common faults
- Explore HV battery isolation monitoring and diagnostics
Inverters and Regenerative Braking (CESD-113)
- Introduction to electric machines (traction motor and generator)
- Examine battery power inversion process for use in traction motors
- Investigate motor/generator use and reclamation of power during regenerative braking operations
- Explore power inversion for use in AC compressors, power steering assist and other supporting systems
- Examine fault diagnostics and service procedures to promote longer component in-service life
- Explore isolation faults related to inverters
Motor Operation and Diagnostics (CESD-114)
- Examine commonly used OEM electric machine (traction motor and generator) technology and operation
- Discuss traction motor and generator controls through the use of 3 phase alternating current and resolvers
- Explore auto stop/start systems and hybrid transmission technology
- Investigate hybrid vehicle transmission power flows and operation
- Discuss motor diagnostics including the various special tools and methods used in fault tracing of rotor/stator issues such as loss of isolation
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