PD291811: Nickel Metal Hydride (NiMH) Hybrid Battery Systems

Abstract

Content: This course from SAE International training partner, FutureTech*, is a MUST for everyone servicing hybrid vehicles. Nickel metal hydride (NiMH) battery systems continue primary battery technology in hybrid vehicles and have been since the 2000 model year. If a technical professional doesn't know the fundamentals of NiMH operation it is impossible for them to perform a solid diagnosis or repair. This course will concentrate on the NiMH technology, how it performs as it ages, how it can effect vehicle performance and fuel economy, and how to test it by using a scan tool. NiMH battery systems continue to be used in Hybrid Electric Vehicle (HEV) applications and provide an excellent foundation in high voltage battery pack systems. This course will include NiMH battery cell operation, cell/module failure modes, diagnostic testing methods, battery hardware components, battery stress testing techniques, and how some of these areas differ from Lithium systems.
At the conclusion of this five-part series, participants will be able to identify the condition of a battery pack, servicing instead of replacing it, and using specific testing methods outlined in this course. Ford, GM, Honda, Lexus, Toyota hybrid electric vehicle products are featured in this course.

Learning Objectives

Content

By participating in this eLearning course, you'll be able to:

List the different formats of a NiMH cell or module and explain the advantages and limitations of NiMH technology
Explain the functions of battery power andbattery energy
Explain what major sensing and component control systems operate in conjunction with the battery controller system
Using the NiMH Module Voltage Sensing Circuit, describe how this circuit functions to communicate battery module/cell voltages to the battery controller
Describe the operation of a battery module/cell temperature sensing circuit
Describe the purpose and operation of battery pack contactors, the battery pack Pre-Charge circuit and the battery pack current sensor
Describe NiMH cell aging and the Apparent Capacity Loss function
Elaborate on how geographical area, terrain, and drive cycle can affect the operation of a NiMH battery pack (cell)
Visually identify battery module or cell electrolyte leaks and bus bar corrosion
Explain how a battery pack controller aging can affect how voltages can be skewed
Describe how a battery pack cooling system can effect battery module/cell longevity, premature module/cell failure, and overall performance
Explain the battery pack stress test process and how the results can help determine what actions need to be taken

Who Should Attend

Content: This course provides engineers with limited or some experiences in high voltage battery pack systems an excellent foundation to learn these battery pack systems and use this information as platform to learn high voltage Lithium battery pack systems. There are also areas within the course that could benefit more seasoned battery pack professionals.

*FutureTech develops and delivers comprehensive Vehicle Electrification solutions that include technical training, specialty diagnostic equipment and, professional support services to automotive service professionals. Its highly qualified network of suppliers, affiliations and, partners encompasses over 32 years of commercial experience focused in Vehicle Electrification education and technology development.

Meta Tags

Topics: Failure modes and effects analysis (FMEA)
Hybrid electric vehicles
Battery packs
Nickel-metal hydride batteries
Batteries
Vehicle performance
High voltage systems
Fuel economy
Test procedures

Details

Additional Details