Sony’s Energy Storage System

The Sony Lithium Ion Iron Phosphate (LFP) advantage

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Sony Overview & highlights

40.5%

21.0%

5.6%

7.1%

11.6%

0.8%

3.6%

9.8%

Consumer

Network

B2B

Movie

Music

Finance

Other

Electronics

34%

23%

17%

10%

16% Component

Semiconductor

Audio / Video

Camcorder /Cybershot

TV

Founded May 7, 1946Headquarters Tokyo, JapanChairman, CEO and President Kazuo HiraiHeadcount 167,900 (as of March 31, 2010)Consolidated Revenue \7,214 billion (FY ended March 31, 2010)

Founded February, 1975Headquarters Koriyama, JapanPresident Shinichi TanemoHeadcount 3,208 (as of July 31, 2011)Revenue \182 billion (FY ended March 31, 2010)

Sony Energy Devices CorporationSony Corporation

Joint venture with Union Carbide Corp. dissolved and name changed to Sony Energytec1986

Released of the world first commercial lithium-ion battery1991

Released of Lithium Coin batteries1986

Sony Energytec merged with Sony Motomiya to form Sony Fukushima2000

Sony Fukushima merged with Sony Tochigi to form Sony Energy Devices Corp.2004

Sony-Eveready established as joint venture between Sony Corp. and Union Carbide Corp. of USA1975

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Sony has 21 years experience with Lithium-Ion batteries and has almost 4 billion batteries delivered

0

1,000

2,000

3,000

4,000

1991

1993

1995

1997

1999

2001

2003

2005

2007

2009

201119

91

●1991「World first Lithium-Ion battery」

1999

●1999「Lithium-Ion polymer battery」

2003

● Jul.2004「1.0 bil pcs」

●2003「High power Lithium-Ion battery」

● Jul.2007「2.0 bil pcs」

2009

●2009「Olivine type phosphate battery」

● Feb.2010「3.0 bil pcs」

●2011「Olivine type phosphate battery module」

2011

● Est.2012「4.0 bil pcs」

1,000

2,000

3,000

4,000

Million of pieces (accumulated)

Year

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Sony offers a wide range of cells developed for specific applications

Pow

er (c

ontin

uous

cur

rent

)

Capacity (energy density)

V-Series

Fortelion

Power Tools

Energy StorageE-Bikes

UPS

High output

High capacity

CamcorderDSC

Nexelion

LaptopG-Series

CellularLaptop

A-Series

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Due to its inherent safety, eco-friendly materials, longer lifespan, and higher discharge power Sony selected Iron Phosphate cell for its Energy Storage System

V-Series Cylindrical

Format

Cylindrical

Cylindrical / Prismatic

Nexelion

G-Series

Nickel Manganese

Cathode

Cobalt

Cobalt

Graphite Carbon

Anode

Tin Based Amorphous

Graphite Carbon

Organic Electrolyte

Electrolyte

Organic Electrolyte

Organic Electrolyte

High Power

Benefit

High Capacity

High Capacity

Materials

A-Series Laminated

CylindricalFortelion

Cobalt

Iron Phosphate

Graphite Carbon

Graphite Carbon

Gel Polymer

Organic Electrolyte

Flexible Size, Light and Small

High Power, Inherent Safety

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Features of Lithium Ion Iron Phosphate batteries

Feature

1 Inherent safety

2 Long cycle-life

3 Long calendar life

4 High discharge power

Benefit

5Outstanding performance at high temperatures

6 Deep discharge capability

7 Iron used as cathode

8 Quick charge

Feature Benefit

Ideal for residential and commercial use

Best for PV applications

No replacements during project duration

Best suited for back-up and hybrid applications

Increased reliability under severe whether

No system over-dimensioning needed

Environmental friendly, no rare metal disposal

Adaptability to fast changing energy sources

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Inherent safety of Lithium Iron Phosphate comes from its robust chemical structure and high thermal stability

LiFePO4

LiCoO2

LiFe

P

O

Crystal structure of Lithium Iron Phosphate

BenefitLithium Iron Phosphate in the nature

Triphylite: LiFePO4

(discharged condition)Heterosite: FePO4

(charged condition)

Lithium Iron Phosphate is a stable mineral since it exists in nature in both discharged and charged forms.

The oxygen and the phosphorus in the phosphate are strongly fixed by covalent bonds.

No release of oxygen when heated: temperature run-away reaction is not a concern for batteries based on Lithium Iron Phosphate

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Long cycle life and deep discharge capabilities considerably improve the system’s Total Cost of Ownership and greatly reduce the environmental impact

Cell specifications Benefits

1 Sony LFP battery = 1,2 kWh (100% DoD, >8000 cycles)

is approximately equivalent to

2 kWh any other Li-Ion chemestry (60% DoD, <6000 cycles)

4 kWh Lead Acid battery (30% DoD, <3000 cycles)

No replacement needed for Sony LFP battery

Probably 1 replacement needed for other Li-Ion batteries

At least 2 replacements needed for Lead Acid batteries

is approximately equivalent to

In 20 years you willCharge: 23

oC, 3.60V, 3.0A (CCCV), 100mA cut

Discharge: 23oC, 3A, 2.00V cut off

74% @ 8000 cycles w/100% DoD

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Sony is worldwide one of the few experts in LFP material technology as well as a pioneer designing and building advanced Lithium-Ion batteries.

State of the art Li-Ion battery design

World-class own advanced LFP material technology

High quality Li-Ion battery mass production

Advantages Customer’s benefits

Best in class, environmental friendlybattery designed for maximum

performance and safety in renewable energy and back-up applications

Energy Storage Module

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Sony’s Energy Storage System is world’s first system to obtain the safety standard accreditation “UL Subject 1973” from the Underwriters Laboratories

Energy Storage Module

Energy Storage Controller

Device Component Recognition Mark Test passed

Electrical tests:• Overcharge• Short Circuit• Forced Discharge• Temperature• Dielectric Withstand• Insulation Resistance• Abnormal Operations• Strain Relief• Push-Back Relief• Electrical Tests on Mains

Supplied Controls

Mechanical tests:• Vibration• Shock • Crush • Impact• Mold Stress• Pressure Release• Start-to-Discharge

Environmental tests:• Resistance to Moisture• Thermal Cycling• Fire Exposure

Material tests:• 20-mm end product flame

test• Parts in contact with

electrolyte

Benefits

• End customer trust• Component recognition greatly facilitates to get UL accreditation to system

using Sony’s Energy Storage components• Insurance acceptance• Allow participation in many international RFPs

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The Sony’s Energy Storage System offers a wide operating temperature range and is modular scalable

Module/System specifications

● One 1.2kWh unit contains of 16S8P US26650FTC cells (16 cell clusters are connected in series, 1 cell-cluster contains 8 cells connected in parallel. Each cell in the cluster has a 3Ah capacity)

Energy Storage Module description

Module System (module + controller)

51.2V / 2.5kW / 50ANominal voltage / Maximum output / Maximum discharge current

51.2V / 5kW / 100A

1.2 kWh (24 Ah)Capacity

1.2 to 19.2 kWh (24 to 384 Ah)

57.6 VCharge voltage

-40 deg. C to +65 deg. CStorage temperature

Discharge: -20 deg. C to +60 deg. CCharge: 0 deg. C to +45 deg. COperating temperature

Up to 20 yearsExpected life

Approx. 17 kgWeight Approx. 25 kg to 280 kg

● The controller can monitor the internal cell status (voltage, current, temperature, etc) of up to 16 Energy Storage Modules

Controller description

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Connection diagram for a On-site consumption application in Germany

System cabling (example) System characteristics

● Controller supervision up to 16 Modules

● Energy modules connection Parallel or serial

● Capacity upgrade after commissioning Yes

● Nominal voltage (avg.) 51.2V

● Energy capacity (approx.) 4.8 to 19.2 kWh

● Weight (approx.) 25 to 280 kg

● Max. power output 5 kW

● Room ventilation Not needed

System architecture (example)

DC

AC

Intelligent Switch

AC

DC

Sony ESS

PV meter

Public gridMeter

Load

1 to 16 modules

End terminal connecter

I/F(U)

I/F(U)Module 16

I/F(U)

I/F(U)Module 3

I/F(U)

I/F(U)Module 2

I/F(U)

I/F(U)Module 1

I/F(U)

I/F(U) EB+ B+ EB- B-

CAN RS232

Controller

SMA Sunny Backup M or other(Please contact Sony for list of compatibles products)

CAN Communication

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Sony’s LFP Energy Storage System is the ideal solution for renewable energy applications

With fewer batteries

Without rare metals

The Sony’Energy Storage Solutions delivers superior performance for renewable energy applications

With longer lifespan

With the safest technology in the market

The Sony advantage

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Summary of features

1. Safest Li-Ion battery on the market

2. Environmental friendly due to use of iron based compound (no rare metals)

3. Lowest ecological impact due to maximum capacity usage (100%DoD) and long life (up to 20 years)

4. System capacity upgrade after commissioning possible

5. World’s first Lithium Ion battery system with “UL subject 1973” accreditation

6. No special room ventilation needed

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Thank you for your kind attention!