battery management system - 101sunsautomation.com/bms/bms-101.pdf · 3 battery management system...
TRANSCRIPT
Battery Management System - 101
By: Robin Sun - SUNS Green Technology Inc.
Copyright© 2016 SUNS Green Technology Inc.
2
Agenda
● Battery Management System (BMS)● Battery Technology (High Energy)● Lead Acid Battery (LA)● Lithium-ion Battery (Li-ion)● Characteristics comparison● Charging/Discharging management● GEMS of SUNS Green Technology● Markets and Applications● Services● Q&A
3
Battery Management System (BMS)
● Monitors State of Charge (SOC)● Monitors Depth of Discharge (DOD)● Monitors internal temperature● Monitor and Control O/U charging● Balancing battery banks● Prolonging battery life● Rejuvenate old batteries● Green technology driven
4
Battery Technology (High Energy)
● Energy capacity of battery – Ah● Delivery of amps in an hour● 100Ah capacity = 100A in 1 hour
(LOAD of 50A will last 2 hours)● Watt = Volt x Amp
1200 Watt = 12 Volt x 100 Amp / hour● Applies to all batteries● All battery banks require cell balancing
5
Battery Technology (High Energy)
Lead Acid (Deep cycle)– Flooded Lead Acid (FLA)- Sealed Lead Acid (SLA) 1. Gel cell 2. Absorbed Glass Mat (AGM)
Lithium Ion rechargeables- Lithium Colbalt Oxide (LiCoO2)- Lithium Manganese Oxide (LiMn2O4)- Lithium Iron Phosphate (LiFePO4)- and many more...
6
Lead Acid (Deep Cycle FLA)
Flooded Lead Acid (FLA)- Inexpensive, most popular- Heavy, bulky- Short duty cycles (250 cycles)- Charge in well ventilated room only- Risk of acid spillage and burn- Minor risk of over-charged explosion- Battery losing charges after 50%- Battery consider dead at 11.5V
7
Lead Acid (Deep Cycle SLA)
Sealed Lead Acid (SLA)- Cost more than FLA, less popular- Heavy, bulky- Duty cycles (500 cycles)- Charge in well ventilated area only- Safe from acid spillage and burn- Lower risk of over-charged explosion- Charge/Discharge Efficiency 50-70% - Battery consider dead at 11.5V
8
Lithium Ion (Li-ion Prismatic)
● Higher cost, least popular● Light weight, compact (less space)● Duty cycles (rated 2000 life cycles)● Does not produce gas during charging● Does not spill (totally sealed)● Higher risk of over-charged explosion● Charge/Discharge Efficiency – 95-98%
9
LiFePO4 (LFP) Battery
● 5th generation battery
● Totally sealed; no PRV
● Safest Li-ion chemistry
● Lower voltage 3.2Vper cell
● Easily configurable (6/12/24)
● 2000 – 8000 cycles with BMS
● Rated 20, last up to 30 years
● Use by SONY, BOSCH
● Use by E-Vehicles
● Use for energy storage
10
Battery Characteristics
Lead Acid (AGM)● 250 to 1200 cycles
(20% to 50% DOD)
● Charge/Discharge efficiency(50% to 75%)
● Maintenance free
● Cost about the same as LFP
● Last up to 10 years with BMS
● Requires proper ventilation
● Larger Space requirement
● Heavier and larger than LFP
LiFePO4 (LFP)● 2000 – 8000 cycles
(70% to 100% DOD)
● Charge/Discharge efficiency(95% to 98%)
● Maintenance free
● With 2x capacity over SLA
● Last up to 30 years with BMS
● No ventilation required
● Less space required than SLA
● Light weight and smaller in size
11
Charging/Discharging Management
MONITOR● Over/Under Voltage
● Charge/Discharge OC
● Discharge Short Circuit
● Cells Voltages
● Charge/Discharge
● End of Charge
● Internal Over Temp.
CONTROL● OV/UV Lock out
● C/D Over Current
● Over charging <95%
● Cells Balancing
● Rate of C/D
● Shutdown procedures
● Over Temp. shutdown
12
Battery Charging Technologies
● PWM – Pulse Width ModulationFor smaller systems, old technology, least expensive, no monitoring, no integrated battery bank balancing
● MPPT – Max. Power Point TrackingTypically for PV arrays, better technology, higher cost, for Lead Acid batteries only
● BMS – Battery Management SystemSmart Green technology, monitor and control critical set points, active battery balancing Li-ion batteries, extends battery life, greener energy solution
13
GEMS of SUNS Green Technology
GEMS (Green Energy Management Systems)
● Diamond* – Industrial scale battery Network
● Ruby* – Commercial battery banks
● Sapphire* – Residential battery banks
● Emerald – Motive battery charger
● Jade – Portable chargers (small devices)
*Integrated inverter version are available
14
Markets and Applications
U/G Mining Battery powered Equipment
IndustrialForklifts TrolleysChargers
Mobile
Golf cartsScootersRV/Boats
E-Vehicles
E-Car/BikeE-TrampSegway
Green Energy
Off-GridGrid-tiedHybrid
Medical
Back upEmergency
15
Services
● Green Tech Turnkey solution providerU/G mining operators, PV integrators, equipment suppliers
● Globe master distributor (SUNS GT)for Zones, Regions, Areas, Locals
● Battery diagnostic and recoveryPartnership with recycling depots, retailers
● Resources for DIY enthusiast● Battery education and training
16
Q & A
Thank you for your time
Please call (306)202-8586 for● Battery Introductory training● Battery Management System Training● Green Energy Management training
Email: [email protected]