lifetime considerations for energy storage subsea schive
TRANSCRIPT
Hans Henrik Schive
etablerer Hans H. Schive.
Etablert som AS
Gerhard Magnus Schive
Tok over som DL
Etablert egen
batterimontasje i NorgeBle medlem i
Spesialistnettverket OMNI
50-års jubileum.
Sven André Aarseth blir ny DL
Rendyrker batterispesialisten.
Avvikler komponent.
1946
1963
1976
1980
1998
2010
2012
2013
Første batteriagentur Batteripakker største
forretningsområde
2014
2015-17
Etablert vakuum støpelinje
for batterier
2017-
Et komplettert
spesialistnettverk
THE SCHIVE STORY
THE COMPANY TODAY
• Quality and safety
o ISO9001:2015 Certifiedo J-STD-001 Certifiedo Safe Transport of Dangerous Goods by Air
WHAT DO WE DO
LITHIUM BATTERY EXPERT FOR ALMOST 30 YEARS
• Primary & secondary Lithium cells and batteries
• Custom design & engineering
• Battery assembly (in-house & external)
• Battery testing and analysis
• Dangerous goods handling & shipping
• Lithium battery emergency and safety products
• Consulting, courses and seminars
LIFETIME CONSIDERATIONS
What do you need your battery to do?
• Li-metal or Rechargeable battery?
Capacity Voltage Energy Wh/kg Wh/l C-rate
PrimaryBobbin (D)
19 3,6 68,4 684 1307 0,005
Primary spiral (D)
14 3,6 50,4 494 963 0,13
Rechargeable18650
3,3 3,6 11,9 245 698 2,42
Parameters for subsea / offshore lifetime
Very different requirements for different applications
• Down-hole: Li-primary batteries
• Manifold equipment (control unit / actuator / high power ups): Li-Ion batteries
• Manifolds back-up / long-life ups: Li-primary batteries
• Subsea AUV charging: Li-Ion batteries
• Subsea power distribution grid: Li-Ion batteries
• AUV / ROV: Li-Ion batteries
• Instrumentation subsea and offshore: Li-primary
Down-hole and PIG batteries, Primary
• Measurement While Drilling (MWD) and Logging While Drilling (LWD) batteries have been on the market for 30
years.
• High shock and vibration application (1000 G shock / 40 G vibration)
• Temperature range up to 225°C, typical ranges are -40 to 150/165°C, +40 to 180°C, +70 to 200°C, +150 to 225°C.
• Cell capacity range as high as 42 Ah
• Common problem with HT cells is cell passivation, cure is special Gallium based electrolyte and dual anodes
• Primary design criteria are temperature range, consumption profile, space and run-time
• Extreme rugged and mechanically solid encapsulations required
• Battery moulding can extend life of cells and increase safety, but if choosing wrong moulding agent, then the
opposite is true. Resonance at vibration and explosions worst scenarios.
Depassivation• Passivation can be avoided by drawing a small continuous current during storage.
• Passivation can be avoided or removed by drawing a pulse / high current at regular intervals or before the cell / battery should go into operation.
• Battery is no longer passive when open circuit voltage is normal and closed circuitvoltage of the cells responds as expected.
• OCV and CCV of a passivated cell is lower than what is expected of a data sheet.
Primary battery design• Low rate - Bobbin cell construction
Lithium metallic anode cylinder pressed to cell housing, catholyte (cathode electrolyte), carbon powder and metallic central current collector.; Low current
Medium rate - Dual anode construction
Modified bobbin design with second layer of anode, relatively simple and rugged design; Medium current
Extensive use in downhole applications for 25 years
• High rate – Spiral cell construction
Rolled layers of anode, separator and cathode with central current collector; Highest current
Manifold Equipment, Rechargeable
• Batteries to power Subsea Control Modules, Actuators, Manipulators, UPS high power, etc
• Cold temperature operation challenge (some areas with sub-zero charging, can lead to cell failure)
• Lifetime requirements up to 25 years
• Only highly accelerated and partial test data exists supported by simulation
• Only highly specialized cell designs and certain chemistry variants will likely survive
• Battery internal resistance increase at low temperature and long life can create power restriction
• Battery management electronics and charger shall be produced according to highest workmanship
standard, IPC-610-a class 3 (not common for most commercial battery electronics)
• Qualification regime (shock / vibration) more severe than land-based standards
Manifold Back-up, Primary
• Back-up batteries with very high energy density
• Almost 2x energy density compared to Li-Ion (Bobbin)
• Self-discharge as low as 1% per year
• Passivation may be a problem if the battery is inactive for a longer period. Leads to initial voltage
dip once activated. Avoided by introducing a small bleeding current.
• Primary spiral cells can be used for moderate power, lower passivation but lower energy density
Subsea AUV charging / power grid support
• Energy density most important factor (packing envelope)
• Power density
• Charging rate (faster charge; more customers served)
• Batteries could either be in 1 atm nitrogen or pressurized in oil, no standard exists
• Lifetime requirement is not settled
• Interface is not settled, inductive could be good candidate due to several mating / de-mating
• Electronics requirement not determined, should API 17F be used or is that too strict?
• What safety level is required? UN 38.3 / DNV-GL / other?
AUV / ROV batteries
• Energy density most important factor
• Very price sensitive market
• AUV low-medium power / ROV medium-high power; thus not the same cells or battery design
• No standards exist for these applications
• Batteries could either be in 1 atm nitrogen or pressurized in oil
• Lifetime requirement is not settled
• What safety level is required? Customer set their own safety requirements; market will choose
what safety level is ‘good enough’
Instrumentation
• Energy density most important factor
• Typically very low discharge rate (up to a year or more)
• Safety design is extremely important, rough handling topside
• No standards exist for these applications
• Do not forget sufficient pressure release mechanism. Worst case/likely failure mechanisms must
be determined and countermeasures integrated into the design. Both flow rate and release
pressure of pressure release solution are critical.
SCHIVE REPRESENTING
ENERGY STORAGE
➢ Modular Li-Ion modules
➢ Scalable from 12-1000V
➢ For Marine and energy storage industries
IN-HOUSE BATTERY & CELL TESTING
Battery tester (LBT-60V-15A) Cell tester (LBT-5V-5A)
Voltage range 0 – 60 VDC 0 – 5 VDC
Charge / Discharge 15 Amp / 15 Amp 5 Amp / 5 Amp
Max channel power 900 W 25 W
Channels 8 16
Measurement Precision < 100ppm < 100ppm
Measurement Resolution (Voltage) < 8μV (24-bit) < 10μV
Measurement Resolution (Current) 0.0003% (18-bit) 0.0003% (as low as 6nA)
Current Rise Time ~1mS ~200μS
Control Accuracy (Current) < ± 0.02% 0.02% FSR (as low as 0.4μA)
With high precision Battery testing and Research Solutions from ARBIN Instruments, SCHIVE can provide battery testing and analysis services to our professional customers.