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Analyze various energy storage systems
Assessment Strategies
Written Product (Research Paper)
Criteria
Describe energy storage technologies, including pumped hydro, compressed air, flywheels, hydrogen, ultracapacitors, and various types of electrochemical batteries
Paper includes content related to a specific energy storage technology
Paper includes at least three outside references
Paper is organized logically
Paper identifies areas of future research and innovations for the chosen energy storage technology
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Summarize the chemistry inside a battery and describe how circuits work
Assessment Strategies
Hands-on Skill Demonstration in Lab, Written Lab Worksheet
Criteria
Describe a redox reaction
Identify the function of various battery components, including anode, cathode, separator, electrolyte, and current collector
Measure and calculate electric potential and current for batteries wired in series and parallel
Measure and calculate power, energy, electric potential, and current for energy storage circuits
Explain the relationship between charge controller, BMS, battery, and solar and how these elements work together as a system
Series and parallel battery lab performance meets expectations as identified by the instructor
Battery and charge controller lab performance meets expectations as identified by the instructor
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Compare and contrast various battery chemistries
Assessment Strategies
Hands-on Skill Demonstration in Lab, Written Lab Worksheet
Criteria
Describe the difference between lead-acid, NiMH, and Lithium-Ion batteries
Differentiate Electric Potential vs. Time graph for the discharge of various battery chemistries at different C-rates and different temperatures
Differentiate Capacity/State of Charge vs. time graph for the discharge of various battery chemistries at different C- rates and different temperatures
Explain the effects of discharge rate and temperature on discharge capacity and battery life
Battery analyzer lab performance meets expectations as identified by the instructor
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Calculate the size of a battery bank based on energy use needs
Assessment Strategies
Presentation
Criteria
Determine the purpose of the energy storage system (night-time usage and/or days of autonomy)
Explain how factors such as temperature and peak power demand affect the sizing of the battery bank
Describe the function of the BMS and the DC/AC inverter
Presentation includes a recommended battery bank size and is logically organized
Presentation tone, volume, and language are appropriate to the audience
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Predict the operation of a specified energy storage system
Assessment Strategies
Written Product (Paper), Presentation
Criteria
Specify an energy storage system
Describe the intended application of the energy storage system
Calculate the required specifications/parameters for the energy storage system
Describe the chosen energy storage system components and the rationale for their selection
Predict the basic operation of the specified energy storage system, including parameters such as peak power, depth of discharge, max/min and average operating temperature, efficiency, expected cycle lifetime, and anticipated cost of operation ($/kWh stored)
Model the basic operation of the system
Presentation tone, volume, and language are appropriate to the audience
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Install a residential size battery energy storage system
Assessment Strategies
Skill Demonstration
Criteria
Demonstrate safe practices for working with energy storage equipment
Use voltage rated tools and personal protective equipment
Apply wiring and installation practices to conform with relevant electrical and fire codes
Apply proper protocols for safe commissioning of an energy storage system
Use electrical meters to measure and verify electric potentials and current