Lithium-Ion

based

Energy Storage System

for EVs to Telecom Towers

Manish Kasliwal Director - Regional Business Planning, Strategy, M&A and Marketing

NEC APAC Pte. Ltd.

5th July, 2012

NEC Confidential

Agenda

▐ Energy Storage System

e-Storage market size and forecast

e-storage demand outlook

▐ ESS Technology

Key technologies in ESS

NEC’s LiB based e-Storage solutions for • Electric Vehicles

• Telecom Towers

• Home

NEC’s e-storage technology

NEC’s achievements in Smart energy Business

▐ NEC Group and Vision

Page 2

NEC Confidential Page 3

Smart Grid and Energy Storage System

ＢＥＭＳ

Grid Power Grid Information

ＨＥＭＳ ＳＥＭＳ

ＥＶ Charger

Station

Telco Tower

BTS

Data

Center

Renewal Energy T&D

Substation

ＣＥＭＳ

ESS(LIB) roles;

① RE Stabilization ② Ancillary for demand fluctuation

③ Peak Cut/Shift ④ Back-up

Heat,

Nuclear

Hydro

Supply Side

Demand Side

①

②

③ ④

③ ④ ③ ④

③ ④

④

④ ③

④ ③

③

ESS (LIB)

Ｓｍａｒｔ

Ｍｅｔｅｒ

NEC Confidential

e-Storage - Market size (APAC region)

Page 4

▐ Telecom application is the largest segment in 2011 because of the vast number of

telecom towers being installed in the region.

eStorage Market Size (2011- 2017), APAC

Source: Frost & Sullivan Report, 2012

27%

▐ Li-ion battery market to grow to 41.4 billion USD in 2020

▐ Automotive Li-ion market to grow 37% a year, vs. annual growth of only 3% for consumer electronics batteries

NEC Confidential

Energy Storage System [ESS] Market Forecast

Page 5

Why Energy Storage?

▐ Supply & Demand

▐ Mobility & Portability for consumer goods

▐ Reduces carbon foot print

▐ Renewable energy

▐ Increases utilization of existing assets

Applications & Technology

▐ Renewable: EMS & Power Conditioning

▐ Automotive

▐ Mobility

NEC Confidential Page 6

Lithium-ion battery demand outlook (capacity basis)

HEVs/EVs

NEC Confidential

Key Technologies in ESS and Benefits of LiB

Li-ion Battery

NaS

Battery

Lead acid Battery

Nickel-Hydrogen Battery

Energy Density (Wh / kg) 120 110 35 60

Energy Efficiency (%) 95 90 87 90

Life (Number of Cycle)

4000 4500 200-2000 1000

Advantages

- High energy density - High energy efficiency - Rapid charge and discharge

- Long life - Low price - Resourceful (Na, S)

-Long life - Proven technology - Confirmed method of Recycling of the battery

- Rapid charge and discharge - Resistance to overcharge and over discharge

Disadvantages - Danger of Organic electrolyte

- Exothermic danger - Low energy density -High price of hydrogen storing alloy -Exothermic danger

Source: Japanese Agency for Natural Resources and Energy, 2009 & NEC’s research

Rechargeable batteries which can be used for energy storage are mainly Li-ion, NaS, Lead, Nickel-Hydrogen Batteries.

NEC Confidential Page 8

NEC’s e-Storage Solutions

NEC Confidential Page 9

Trials continue with partners.

Supply Side Demand Side

Generation Distribution Business facilities Apt.

Buildings Houses - Stores

Application Power

Stabilization Ancillary

Peak shave Load shift

Peak shave

BEMS

Peak shave HEMS

System Scale 3～100MWh 30～150MWh 100KWh～10MWh 50～300KWh 3～15KWh

Client, Partner Power company Utility Biz. Facility Apartments Contractors Convenience

store

Initial Business

METI trials Micro grid in Indonesia

Joint trials EPRI in US ENEL in Italy

NEDO trials

at Yokohama (Japan)

Biz.Dev/Search Residential

storage system

Distribution,

substation Housing,

Retail

Apartment Bldg. Commercial bldg,

factory, data center

ＩＣＴ

Battery Storage System

Heat, hydro, nuclear power

Renewable energy

Renewable energy

NEDO:

New Energy

and Industrial

Technology

Development

Organization

NEC’s Li-Ion based Energy Storage Solutions

NEC Confidential Page 10

NEC Energy Devices

Electrode Production

(Factory:

Sagamihara) Automotive Battery

Production

ＡＥＳＣ

(Automotive Energy Supply.)

(Factory: Zama)

For Electric Vehicles

Electric Vehicles

49%

Investment 51%

Investment

Module Cell Electrode Pack

Electrode

Mass prod. started

7/23/2010

Launch and Ramp Business through Nissan Partnership

Battery

NEC Confidential Page 11

For Telecom Towers

Utility Grids

ＡＣ Line

ＤＣ Line

Signaling Line

System Controller

PV

BMU

Unit

Unit

Pack

・・

DC/DC C O N T RO L L E R

ＥＭＳ Server

BTS

Air Conditioner

ＡＣ

Diesel Generator

ＡＣ

LIB

DC/DC

AC/DC

Energy Management Server

NEC Confidential

For Home

▐ NEC’s support centre can monitor Li-ion battery remotely

5.6 kWh

System Controller

Li-ion battery for home

Power conditioner

Router Internet

Communication line

NEC’s cloud

NEC’s support centre

Solar panel

Grid

Power-supply line ( for important home appliances)

(Already sold in Japan)

Power-supply line ( for general home appliances)

General home appliances Important home appliances

Monitoring service

Operation Panel

Distribution board

for general home

appliances

Distribution board

for important

home appliances

NEC Confidential Page 13

Key Features of NEC’s Li-Ion Technology

▐ Manganese Spinel Cathode Material

Greater resistance to overcharge

and high thermal stability

Abundant material deposit

compared with Co and Ni

▐ Laminated Cell Structure

Low internal resistance and high

heat dissipation allows less heat

generation than a cylindrical cell

▐ Proven Reliability as a Large- Capacity Auto Batteries

Safety& Long Life of more than 100,000 km has been proven by Nissan’s HEV Test

Mass Production Quality has been achieved with Subaru Plug-in STELLA

NEC Confidential

Table. Comparison of cathode electrode materials

Manganese Spinel Cathode Material

Page 14

▐ NEC realized lifespan of Manganese Spinel Cathode Material longer.

▐ It’s possible to reduce cost involved in procuring materials due to Manganese’s abundant material deposit

NEC Confidential

Laminated Cell Structure

Page 15

Fig. Laminated cell structure

External view of the 32Ah cell for the energy storage

application

▐ NEC’s laminated cell realizes;

• Low internal resistance

• High heat dissipation

• Lighter battery

• Flexibility of the shape of the design

NEC Confidential

Lifetime Extension Technology for Li-Ion Secondary

Batteries

Page 16

Fig. Result of cycle test

Table. Specification of the developed Li-ion battery External view of the of the developed LiB

NEC Confidential Page 17

Key Components of ESS

System Controller

Power Grid or PV

Home

Power Conditioning System

Battery Management Unit

Pack Pack Pack

Cell

System Controller Observation, Control,

Record, Monitor

Package of Energy storage system

High density package, Heat-resistance, Environment of

outdoor-resistance

Pack High density package,,

Heat-resistance

Power Conditioning System Transform AC and DC

Battery Management Unit Keeping safety of battery,

Controlling balance of electricity

Cell High level of security, Long-life, High density

of energy

AC

DC

NEC Confidential

NEC’s Measures and Achievements in Smart Energy

Business

Page 18

EV Charging

Infrastructure Smart House Electric Vehicle Store BEMS(*)

Power Supply

Side

Survey the deployment of energy

management technologies for

mobile phone base stations in India

Strategic partnership

with Enel Distribuzione

on the development of

Next-Generation Smart

Grid system

Launched cloud supported home energy storage system

Development and field trials of distributed energy management and control

system technology using storage batteries with ORIX Corporation

Began demonstration project for Battery and Charger Integration Systems for

next generation service stations as part of Yokohama City’s “Yokohama Smart

City Project”

Developed new technology which doubles life of manganese Li-ion

rechargeable battery

BEMS (*) : Building Energy Management System

NEC Confidential Page 19

NEC Group Overview

Sales: Over 38.2 billion US dollars (ending March 2012)

Employees: Over 133,070 worldwide

Platform

12%

IT Services

26%

Electric

Devices,

Others

8%Personal

Solution

25%

Social

Infrastruct

ure

10%

Carrier

Network

19%

Sales By Segment

7.3%

21.7%

10.8% 20.8%

12.2%

26.9%

NEC Confidential

NEC Group Vision 2017

To be a leading global company leveraging the power of innovation to realize an information society friendly to human and the earth