Renewable energy storage devices

Shin–KOBE electric machinery co,. Ltd.

２０１１．３

2Business Activities

Storage Batteries

ElectricMachines

Three Business Domains Sales Turnover in 2009

Plasticproducts

ElectricEquipments

StorageBatteries

90B¥

AutomotiveBattery42%

PlasticProducts26%

IndustrialBattery,ElectricEquip.etc32%

We are “HITACHI” group company.

3

We have 3 Storage Devices.

RE storage Business Strategy

・Large storage・Low cost・Long life

・High density・Small storage・High cost

・High power・High rate charge・Long life

ＬＬ Battery

Lithium-ionbattery

Lithium-ioncapacitor

・Storage &Stabilization

・Storage &wave smooting

Hybrid storage

For example

4Compare of storage devices

Discharge time

10h １h 0.1h 36S

3.6S

0.36S

36ms

10

Output density（W/kg）

（Momentary power）

1000

100

10

1

0.1

0.01100 1K 10K 100K

Ni-MH

NaS

LL battery

Lithium-ionbattery

ＥＤＬＣ

L-cap

Energy density（

Wh/kg）

（Vi

tality）

Chemical capacitor

Each devices have unique characteristic.We propose “hybrid storage” system.

5

Li-ion capacitor

support area

Li-ion battery

support area

Lead acid battery

support area

Demand

Time

Image of “Hybrid storage”

Demand power carb

6Hybrid storage demonstration project

ＬＬ battery ＋NaS batteryＬＬ battery ＋NaS battery

ＬＬ battery ＋ CapacitorＬＬ battery ＋ Capacitor

ＬＬ battery ＋ Li-ion batteryＬＬ battery ＋ Li-ion battery

・Nishime (Akita, Japan)・Wind turbine stabilization・Now operation from Aug. 2007

・Los Alamos (NM, USA/by NEDO)・PV storage & Grid stabilization・Order （Set up at 2011）

・Yokohama city (Japan/by NEDO)・PV storage & EV charge・Order （Set up at 2011）

7How it works with LL type battery

Actual Data from Nishime Demo Project

Discharge from batteries kept output from dropping rapidly.

Batteries absorbed a fluctuation in wind turbine output.

Green line: Wind Turbine

Red line: Combined output

8

The smooth degree of the output wave pattern rises by a capacitor

Actual Data from Nishime Demo Project

How it works with LL battery & capacitor

１．ＬＬ Battery

２．Lithium ion Battery

３．Lithium ion Capacitor

10Structure of our battery (LL-W type)

Wind power model LL-W

Item LL1500W-8

Voltage 8V

Single Battery 10HR capacity 1,500Ah

Single Battery Energy capacity 12kWh

Installation Horizontal

Height 473

Dimension Width 799

(mm) Depth 500

Weight (kg) 485

Expected life

(Battery temperature 25 )

SOC range 30～ 90%

Per　SKE’s　instruction

Sealed　withRegulated　Valve

Accum total Discharge3,150CAh and 17 years

Charge Condition

Battery　Construction

11Battery assemble

3kWh battery

3kWh×4ｾﾙ=12kWh battery unit

insert

Backplacement

Two lines of12 rows placement

Series of 384 cells batteryTotal capacity＝1.1MWh

12

1.2m

2.0m12.0m

Weight

47,000kg

1.0m7.8m

Maintenance space

Weight

188,000kg

2.0m

Large scale product

Capacity:1.1MWhDC voltage rank:1,000V

Capacity：4.4MWhDC voltage rank:1,000V

12.0m

13Battery assemble in Container

More then 1.0m

APL 45ft type1.1MWh

14Single Battery Product Line-up

Battery type Wind Power

Battery Model LL1500W-8LL50 12

LL220 24

LL330 24

LL1000 12

LL1500 8

LL1000 S-12

LL1500 S-8

Voltage V 8 12 24 24 12 8 12 8

Ah 1,500 50 220 330 1,000 1,500 1,000 1,500

Wh 3,000 600 440 660 2,000 3,000 2,000 3,000

Output kWh 12.00 - 5.28 7.92 12.00 12.00 12.00 12.00

Volume Liter 193 10 144 188 199 193 218 211

Height mm 473 350 360 468 339 473 339 473

Width mm 799 166 799 799 1,145 799 1,257 871

Depth mm 512 175 502 502 512 512 512 512

Weinht kg 485 27 266 367 440 430 496 485

Expected Life(at　25 )

（*See　Notes　below）

3,150・C (Ah)(17 years)

Peak　Shift （Energy　Storege）

3,000 cycles (10 years)

0-40 Use Temperature

Range

Unit

4,500 Cycle(15 years)

Capacity

（*）　In　case　temperature　（charge/discharge/storage）in　out　of　specified　range．　　　Battery　life　and　performace　is　negatively　affected

　　　Charging　methods　such　as　equalifying　charge　as　per　SKE’s　instruction（*）　Expected　Life　for　LL-W　：　DOD30-90%　at　battery　tempeature=25

（*）　Expected　Life　for　LL　and　LL-S　：　DOD70%　at　battery　tempeature=25　　　Charging　methods　such　as　equalifying　charge　as　per　SKE’s　instruction

15System Schematics

Wind

Power before stabilization

dischargecharge

Wind Farm Power after stabilization

Charge／Discharge into/out of Battery

1 bank

LL Batteries

Converter

Cloud

Mega Solar

16Wind farm Demo

“Tapi Wind Farm” Demonstration Project under NEDO program 2001

＜Project Summary＞・ Purpose=Stabilization

・ WTG＝ 300kW

・ Battery capacity＝ 1320kWh

(LL1000×3×220 cells)・ Trial period=6 months

1715MW Wind farm in Shiura

＜System summary＞・ Purpose ＝ Stabilization・ WTG ＝ 15.2MW (1.9MW×8) ・ Battery capacity ＝ 10.4MWｈ

(LL1500W×3456cells)・ Battery Foot print＝ 30m×18m=540

・Weight ＝ 420ｔ

・ Site

Goshogawara Shiura, Aomori

・ Operator

Kuroshio Power ・In operation

Mar 2010

Goshogawara Shiura Large Scale Wind Farm Mar. 2010

1815MW Wind farm in Yusa

＜System summary＞・ Purpose ＝ Stabilization・ WTG ＝ 15.4MW (2.2MW×7) ・ Battery capacity ＝ 10.4MWｈ

(LL1500W×3456cells)・ Battery Foot print＝ 30m×13m=390

・Weight ＝ 420ｔ

・ Site

Yusa, Yamagata

・ Operator

Shounai Power ・Setting completion

Sep 2010・In operation

Mar 2011

Yusa Large Scale Wind Farm Mar. 2010

19

Gansu Prov. China (J-Power NEDO) Sept. 2004

＜Project summary＞・Application＝Micro grid（Stabilization）・WTG ＝ 99kW(11kW×9set)

・Solar＝ 100kW(10kW×10set)・LL-battery＝ 576kWh(LL2000×144)

Wind & Solar hybrid with DEG

Micro Grid

20

ＰＶ＝１００ＫＷ

960kWh Batteries

Malaysia (Tokyo Power Co.～ NEDO) / Aug.2009

Solar Storage On Grid

21

Oota City Japan (NEDO Demo Project) / 2004～2007（550 houses）

9.6kWh Batteries

Home Solar Storage On Grid

22

Toyota City hall Mar.2010

Electric Vehicular Charge Station

9.6kWh BatterySet up on 29 sites

23

ＰＶ

ＰＣＳ

CellerRadio Machine

LL Battery

NTT-DoCoMo Moville Phone Base Station With PV

Solar Storage Off Grid

24

ＰＶ＝８２５Ｗ

10.6kWh Batteries

Developing country (PV for School Facilities)

Solar Storage Off Grid

１．ＬＬ Battery

２．Lithium ion Battery

３．Lithium ion Capacitor

26Hybrid Train （JR East）

The world’s first hybrid train（Li-Ion battery x Diesel engine）already in service from July 2007,a JR East line, Nagano, Japan.Furthermore, ten railroad car begina run in December, 2010

Principle of Energy Saving

①Engine in operation with constantspeed and high efficiency. Ignition fordeparture is not necessary (No gasemission).②Lithium battery for power assistand power regeneration depending onrunning condition.

27Electric Excavator

・Exhaust gas-free・Low noise・Fuel costs saving・Suitable for work in theclosedown space

We substituted Excavator of the diesel engine drive for battery drive.

Produced by Hitachi Construction Machinery Co., Ltd.

ＺＸ３５Ｂ（Jun.2010 release）

28

Switch Board

Battery

ＰＣＳ

Kobe City Metro /System Product by Hitachi（NEDO Project）

Lithium-ion Battery

Out Put：２ＭＷBattery：Lithium-ion BatteryCapacity：６８ｋＷｈ（680V100Ah）

Regeneration System for Train in Substation

29Operation of Regeneration System for Train

Data of Operation

30

210Ah Cell 40kWh Battery System

BCU＋CC＋Switch

Feature:①Safety: Flame retardant electrolytic solution

+ electrode②Long-life: 10 years = Conventional LiB x 3③High-capacity: 210Ah=Conventional LiB x 4

(Targeting additional scale up) ④Weight: 1/3 of lead battery⑤Volume: 1/3 of lead battery

High Voltage DC Lithium-ion Battery System

Application:①Data center in urban area②Base station for cell-phone※Advantage in lightweight and compact

31Module for Lithium-ion Battery

Battery model：ＫＬ９０－８ Module

Battery Configuration 8 cells in line

Dimension（mm） L440 W290 H186

Weight（） 30

Nominal capacity（Ah） 90

Nominal voltage（Ｖ） 30

Weight energy density（Wh/kg） 90

Volume energy density（Wh/L） 114

Output density（W/Kg） 270(DOD=50%)

32Module for Lithium-ion Battery

Battery model：ＭＡ２ Module

Battery Configuration 48 cells in line

Dimension（mm） L611 W318 H103

Weight（） 23

Nominal capacity（Ah） 5.5

Nominal voltage（Ｖ） 170

Weight energy density（Wh/kg） 41

Volume energy density（Wh/L） 47

Output density（W/Kg） 1,900(DOD=50%)

33

For EmergencyFloat Type LiB

For High PowerSupply Type LiB

For Energy StorageType LiB

LiB Controller

Combination of Stationary Type Li-ion Battery

Battery Cubicle

34

1,800mm

800mm

750mm

Storage Capacity：32kWh（DC360V）Output Capacity：100kW

Storage Capacity ：12kWh（DC340V）Output Capacity ：200kW

Storage Capacity ：38kWh（DC190V）Output Capacity ：20A10hr

Energy Storage

High Power Supply

Emergency

（Ventilation）

Specification for Use of Li-ion Battery

35

１．ＬＬ Battery

２．Lithium ion Battery

３．Lithium ion Capacitor

36Property of L-Cap

items design of L-CapRated Voltage 3.8 – 2.2V

Mass 270g

Size φ40ｘ110L（136cc）

InitialProperty

Output Power >5000W/L(2.5mΩ)Capacity >1000F(0.45Ah)・・*)

Energy Density >10Wh/L

HighTemp.Property

Capacity Change

0.5～2%60,3.8V,1000h

Temp. Range -15～80

Voltage Retention 98% (60､1000h)

L-CapSLC-1000B

＊） 1000F L-Cap discharges 1.8 to 2.4 timeslarger energy than 1000F EDLC.

<Characteristics>high voltage, high I/Olong life, heat-stable

good voltage retentioneasy to control

37

cell with bus bar

72 straight 8 straight

12 straight

Example of modules

38

8

9

10

11

12

13

14

15

16

0 5 10 15 20 25 30

10A50A100A200A300A

time (s)

volta

ge (V

, 4 st

raig

ht)

Property of L-Cap Discharge

Discharge is easy to control.Fig. Voltage vs. discharge time

39

0 5 10 15 20 25 308

9

10

11

12

13

14

15

16vo

ltage

(V, 4

stra

ight

)

10A50A100A200A300A

time (s)

Charge is also easy to control.

Property of L-Cap Charge

Fig. Voltage vs. charge time.

40

Fig. Comparison of output energy vs. output powerOutput Power Density (W/L)

Out

put E

nerg

y D

ensi

ty (W

h/L) 40Φ x 110L

DCR(25)2.3mΩ

Capacity 1012F

EDLC（2.5V-1.5V）

25L-Cap

3.8V－2.2V

Property of L-Cap Power Density

7 times larger

4 times larger

40φx135LDCR(25)

2.1mΩCapacity 850F

EDLC

L-Cap

0

2

4

6

8

10

12

0 1000 2000 3000 4000

high power, high energy

41

【Test Method】Cell was maintained 3.8V at 60 for a certain period of time. Afterwardsthe Capacity was measured at 25.

Time (h)

Cap

acity

Cha

nge

(%)

-10

-8

-6

-4

-2

0

0 1000 2000 3000 4000 5000

EDLC2.5V

Property of L-Cap Durability

(200 days)

L-Cap3.8V

Fig. Comparison of capacity change vs. time

long float charge life

42

2MW Voltage Sag Mitigation Device 2350mm

4800mm 2400mm

Lead Acid battery typecompensation : 10seconds

life : 7～9 years

EDLC

2400mm 2400mm

EDLC type1 secondlife : 15

yearscost : 1/2

2350mm

2350mm

600mm2400mm

L-Cap type1 secondlife : 15

years

[size]1/4 of

EDLC type

Application Test Voltage Sag Mitigation Device

43Installation to automatic fork lift

16S x 12P (192cells) 60kg

charger

[note]Lead Acid battery was 500kg

replacement forLead Acid battery

Contact WithKazuhiro Adachi

Shin-KOBE Electric Machinery Co,. Ltd.St. Lucas building,8-1,AkashiCho, Chuuo-Ku, Tokyo JapanE-Mail: k.adachi@shinkobe-denki.co.jpTel:+81 3 6811 2270Fax:+81 3 5565 5772