Lesson 1Thermal management strategies: passive air, forced-air, liquid cooling, and PCM options for urban duty cyclesThis part reviews heat handling choices for city EV packs, including passive and forced air, liquid cooling, and phase change stuff, and explains how drive cycles, weather, and quick charging needs shape the last heat system design.
Heat limits for safety and wear controlPassive and forced-air cooling setupsLiquid cooling plates and pipesPhase change stuff for peak cuttingControl plans for urban drive cyclesLesson 2Nominal pack voltage selection and implications for inverter/motor design and charging powerThis part explains how to choose normal pack voltage, its effect on inverter and motor design, current levels, cable sizing, and DC quick charging power, while handling insulation, safety spaces, and rules for city EV setups.
Voltage ranges used in modern city EVsEffect of voltage on inverter and motor designCurrent, wire sizing, and lossesCharging power, connectors, and rulesInsulation, creepage, and space rulesLesson 3End-of-life and second-life strategies: reuse for stationary storage, recycling pathways and design-for-recycling principlesThis part covers end-of-life paths for EV packs, including health check for second-life use, turning into fixed storage, recycling steps for key stuff, and design-for-recycling rules that cut cost and nature harm.
Health state limits for second-life useFixed storage uses for used packsMechanical and electrical turning stepsRecycling steps for Li, Ni, Co, and CuDesign-for-take-apart and marking waysLesson 4Selecting cell chemistry for city EVs: LFP, NMC variants, pros/cons (energy density, safety, cycle life, supply chain)This part compares LFP and NMC chemistries for city EVs, focusing on energy and power density, safety ways, cycle and calendar life, raw stuff supply risks, cost trends, and how duty cycle and weather guide the last chemistry pick.
Key performance marks for EV cell chemistriesLFP traits for urban duty cyclesNMC types and performance trade-offsSafety and harm tolerance of LFP vs NMCSupply chain, cost, and area availabilityLesson 5Lifetime and cycle-life modelling: calendar vs cycle aging, depth-of-discharge policies, warranty framingThis part explains life and cycle-life modelling, telling calendar and cycle wear apart, the role of discharge depth and heat, and how to turn models into warranties, upkeep plans, and leftover value guesses for city EV groups.
Calendar wear ways and modelsCycle wear vs discharge depth effectsHeat effect on wear ratesSimple life guess workflowsWarranty, leftover value, and group planningLesson 6Battery capacity sizing: methods to choose pack kWh for target range and reserve factorThis part details ways to size battery size, using drive cycle energy models, work guesses, reserve parts, and wear allowances, to meet target range while balancing cost, mass, charging time, and group use needs.
Drive cycle energy use modellingUsable vs normal size meaningsReserve parts and wear edgesEffect of size on cost and massSizing for groups and shared movingLesson 7Battery pack mass estimation: energy density-based calculations and vehicle-level impact on rangeThis part gives ways to guess pack mass from cell and pack-level energy density, including structure and cooling extras, and checks how battery mass affects vehicle range, performance, load, and rule weight classes for city EVs.
Weight and volume energy densityBottom-up pack mass work stepsCounting structure and cooling hardwareEffect of pack mass on range and workLoad, axle load, and class limitsLesson 8Cell format and mechanical layout: pouch, prismatic, cylindrical trade-offs for manufacturability and repairabilityThis part checks pouch, prismatic, and cylindrical cell types, comparing packing work, cooling choices, structure mixing, making ease, and fix ease, and shows how module and pack setups affect cost, safety, and service steps.
Traits of pouch, prismatic, cylindricalModule setups and busbar ideasMechanical fixing and shake strengthCooling plate and air flow path mixingService ease and field fix plansLesson 9Battery management system (BMS) essentials: state-of-charge (SoC), state-of-health (SoH), cell balancing, safety cutoffsThis part brings in BMS jobs, including SoC and SoH guessing, cell voltage and heat watching, balancing plans, safety stops, and talking with vehicle controls, stressing trust and working safety for city EVs.
Core BMS hardware and sense partsSoC guess ways and errorsSoH tracking and wear signsPassive vs active cell balancing waysFault finding, limits, and shut logic
