maritime battery safety and rules updates - dnv battery...•electric energy storage (ees)...

DNV GL © 2014 26 March 2019 SAFER, SMARTER, GREENERDNV GL © 2014

26 March 2019

Sverre Eriksen

MARITIME

Maritime Battery Safety and Rules updates

1

Electrical Energy Storage

DNV GL © 2014 26 March 20192

DNV GL © 2014 26 March 20193

DNV GL © 2014 26 March 2019

Battery System Certification

- BMS requirements

- Thermal runaway protection

- Testing

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DNV GL © 2014 26 March 20195

Battery(Safety)

A notation that cover requirements for the safety of the

battery installation covering vessel arrangement,

environmental control including ventilation and fire

safety.

Battery (power)The notation you need when the battery is used as a main source of power (propulsion power).

DNV GL © 2014 26 March 20196

▪ Vessel arrangement

▪ Battery space arrangement (ventilation, fire protection)

▪ Safe electrical installation

▪ Testing

DNV GL © 2014 26 March 2019

Energy Management System (EMS)

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▪ State of Charge, SOC

▪ State of Health, SOH

▪ Available Energy

▪ Available Power

DNV GL © 2014 26 March 2019

DNVGL Class rules for battery powered vessels

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2012 2015 2018 2019

DNV GL © 2014 26 March 20199

• Electric energy storage (EES)

installation able to absorb electrical energy, to store it for a certain amount of

time and to release electrical energy during which energy conversion processes

may be included

• EES systems covered by the class rules:

• Li-ion battery system

• Electrochemical capacitor

electric double layer capacitor that stores electrical

energy in an electrochemical cell, covering also

supercapacitors, ultracapacitors,

asymmetric capacitors and Li-ion capacitors.

DNV GL © 2014 26 March 2019

Energy and power density

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Source: Elcap

DNV GL © 2014 26 March 201911

Proposed requirements for installation of electrochemical capacitors:

• Certification requirements.

• Installation principles are similar to a Li-ion battery system

• Design principles of the electrochemical capacitor similar to Li-ion battery system.

• Testing of electrochemical capacitors according to UL 810A

DNV GL © 2014 26 March 201912

Proposed main changes for installation of battery systems:

• Certification requirements.

• Clarification of ventilation and gas detection requirements

• Inaccuracy in measurement and calculation of SOC and SOH.

• Additional requirements for liquid cooled battery systems

• Independent overcharge protection of battery modules.

DNV GL © 2014 26 March 2019

SAFER, SMARTER, GREENER

www.dnvgl.com

Maritime Battery Safety and Rules updates

13

DNV GL Maritime Classification

MCANO381@dnvgl.com