Redox Flow BatterySmart Energy InnovatorSumitomo Electric

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Product Lineup

Container Type of Redox Flow Battery

Example of System Layout

Concept

Feature 1: Accurate Monitoring of SOC

Feature 3: Long-life operation

System Configuration

Feature 2: Fire Safety

Feature 4: No operational constraint on cycle life

Principle of Redox Flow Battery (RFB) System- Key Features -

Product Lineup & Layout

» Cost Reduction The containerization of the flow battery reduces the cost of transportation and local commissioning.

» Lifetime & Cycle-basis Economic ValuesBenefits stacking from multiple battery services by unlimited number of cycles over its long lifetime

» Flexible Combination of Output & CapacityPower intensive mode: Up to 200% Design flexibility: Easy expansion of capacity

» Reduction in Installation AreaThe two-storey design and increase in battery output reduce the installation area of our flow battery system.

Example: 500 kW × 3h (1,500 kWh) Model

» The state of charge (SOC) can be monitored on a real time basis. It is directly measured during operation by electromotive force (voltage) at the monitoring cell.

» No significant deposition of solution through chemi-cal reactions in the Vanadium redox flow battery

» Our redox flow battery consists of non-flammable materials and electrolyte.

» No constraint of system operation on depth of discharge (DoD) and number of cycles

　— Depth of Discharge: 100% 　— Unlimited number of cycles over lifetime

» Electrolyte: Vanadium sulphate aqueous solution 　— Non-flammable liquid 　— The mixing of positive and negative 　 electrolyte does not result in ignition.

» Cell stacks and pipes: Polyvinyl chloride (PVC) 　— Non-explosive (Ignition point: 455°C) 　— High self-extinguishing capability

Easy monitoring & management of the available capacity even in a complex operation

Redox: Reduction & Oxidation reactionsFlow: Electrolyte flows through electrochemical cells

Long design lifetime of 20 years&

Semi-permanent use of electrolyte

Extremely low possibility of fire resulting from the flow battery materials and electrolyte

Highly capable of longlife multiple-cycle operations

Basic Specification per Module Output Capacity Dimensions

3 hours model AC250kW AC750kWh 6.1m×4.9m×6m

4.5 hours model AC250kW AC1,125kWh 9.1m×4.9m×6m

6 hours model AC250kW AC1,500kWh 12.2m×4.9m×6m

System Size & Installation Area

Output Capacity Installation Area

1MW 3MWh 15m×17m

1MW 4.5MWh 21m×17m

1MW 6MWh 27m×17m

10MW 30MWk 85m×27m

10MW 45MWh 103m×27m

10MW 60MWh 131m×27m

8m17m17m 8m

Positive flow Negative flow

Cell stackAC

DC

PCS

Heat exchangerGrid

Electrolytetank

Configuration of a single cell

PumpFrame

ElectrodeMembrane

ElectrodeBi-polar plate

ElectrolyteTank

Electrode Membrane

ElectrolyteTank

PCSCell

Charge Discharge

Charge Discharge

Positive Negative

LoadGeneration

V5+

H+

V4+

V2+

V3+

e- e-V5+ ／ V4+ V2+ ／ V3+

Pump Pump

V PCS

Monitoring Cell

Positive Electrode Negative Electrode

V4+ V +5 + e-

Charge

DischargeV3++ e- V2+

Charge

Discharge

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Vanadium Flow Battery

CPVTotal Output

Vanadium Flow Battery

CPV

Load

Micro-grid

CPV

Vanadium Flow Battery CPV Load

ConsumptionCharge Discharge Generation

Grid Smoothing

Generation

Charge Discharge

Vanadium Flow Battery

806040200

-20-40-60

15：0014：3014：0013：3013：0012：3012：00

13：00

80

60

40

20

-20

-40

-6013：30 14：00 14：30 15：00

0

[kW

][k

W]

UNIDO Morocco ProjectWorld largest operational flow battery system in Hokkaido, Japan

RFB System Integration in Transmission and Distribution Networks in California, USA

John Cockerill (JC) Project

Installed case of Redox Flow Battery (RFB) System ①

Installed case of Redox Flow Battery (RFB) System ②

» Partner Hokkaido Electric Power Co., Inc.

» System Output and Capacity 15 MW × 4 h (60 MWh)

» Applications (1) Short term frequency fluctuation controls

— Free-governor control mode — Load frequency control — Renewable generation smoothing

(2) Long term frequency fluctuation control (3) Excess renewable power management

» Project term 2013~2018

» Location Minamihayakita Substation, Hokkaido (Japan)

» Partner UNIDO/MASEN

» System Output and Capacity Output: 125kW Capacity: 500kWh

» Application Micro grid Demonstration Renawable generation smoothing

» Start of Operation July, 2019

» Location Ouarzazate, Morocco

» Partner John Cockerill (JC)

» System Output and Capacity Output: 500kW Capacity: 1700kWh

» Application Micro Grid/Smoothing/Peak cut/Demand Response

» Start of Operation September, 2019

» Location Seraing, Belgium

» Partner Utility in California

» System Output and Capacity 2 MW × 4 h (8 MWh)

» Applications — Frequency control — Voltage control — Excess renewable power management — Ancillary services — Microgrid

» Project term 2015~2020

» Location San Diego, California (USA)

» UL Safety Certification

» Panticipate in CAISO Energy and Ancillary Service

Cell stacks, Heat exchangers (2nd Floor)

Tanks, Pumps, PCS (1st Floor)

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Virtual power plant System

Utilization of EV/PHV as Adjustment of Power Supply and Demand Balance (VPP)

Project with Obayashi Corporation

Project with Taiwan Power Research Institute

Installed case of Redox Flow Battery (RFB) System ③

Virtual power plant (VPP)

» Partner Obayashi Corporation

» System Output and Capacity 500 kW×6 h (3 MWh)

» Applications (1) Grid-connected Mode

— Peak reduction — Excess renewable power management

(2) Island Mode — Primary voltage source (Black start)

» Start of Operation January, 2015

» Project Location Tokyo, Japan

» A virtual Power Plant, operated by an aggregator which directly controls group of energy resources of consumers for effective demand control to adjust the power system, is expected to be an alternation of conventional power plants.

» It is expected that incentives will be obtained by using the charging of the EV/PHV as the adjustment of the electricity supply and demand balance.

» By linking with the telematics server to check the SoC of EV/PHV, it is possible to select the best car for charging.

» It remotely controls charging based on the driving plan entered at the smartphone, so there is no worry about insufficient of charge on driving.

» Partner Taiwan Power Research Institute

» System Output and Capacity 125 kW×6 h (750 kWh)

» Applications — Microgrid Demonstration

» Start of Operation February, 2017

» Project Location Taipei, Taiwan

Lab 1

Main Office Open Lab 1

Open Lab 2

Redox Flow Battery (500 kW×6 h)

Combined Gas Generators (200 kW×2 & 57 kW×1)

PV(30kW)

PV(300kW)

PV(250kW)

PV(150kW)

PV(30kW & 50kW)

PV(10kW)

Grid

Switch Board

R&D buildings

DemoSystem

Communication & Control Network

M EMS MM

MMMMMM

Power Flow

Micro Power Grid

G

EMSTPRI Internal Grid Demonstration Room

PV (150 kW) Load (150 kW)

Generator (50 kW)

Redox Flow Battery125 kW×6 h (750 kWh)

Wind Turbine (10 kW)

Switch Board

Micro Power GridCommunication & Control Network

POWERDEPO®

Driving control of the domestic equipment

Charge, electric discharge of the electric car

EV Quick Charge

Aggregator (Company to watch a resource to be dotted with collectively,

and to control)

Thermal power generation

Nuclear power generation

Hydraulic power generation

CPVElectricVehicle DR Server

Wind-generation electricity

Photovoltaicpower generation

Power transmission and distribution network

Power transmission and distribution networkCharge and discharge of the

battery of the setting by a building, a factory

sEMSA

Redox Flow Battery

Virtual power plant (Consumers facilities)

Large-scale generationOur Products

EV Switch EV Switch EV Switch EV Switch

EV/PHV EV/PHV

EV/PHV 102 cars (2018)

NissanSumitomo ElectricEV/PHV

user

Recycle Energy powergeneration Company

Request for participation

by Smartphone

Cooperation

VPP order

RetailersGrid operator

Demand and Supply adjustment request

KEPCO

Vehicle informationSignal of charge/discharge

EV server

VPP server

Nissan EV Nissan EV

Contact: Business Development Department, Energy System Division

Tel: +81 3 6406 2648 (Tokyo) +81 6 6466 5590 (Osaka)Address: 1-1-3, Shimaya, Konohana-ku, Osaka, JapanURL: https://global-sei.com/

Sumitomo Electric Industries, Ltd.

2020.02