Presentation by LG Chem, December 13, 2011

13 Dec, 2011

ADB - LG Chem Meeting

Contents

1. Introduction

- LG Chem, Ltd.

- TFT organization

2. Li-B Battery Pack

- Overview of LG Chem Li-B

- Electrical Design

- Mechanical Design

- Reliability Test

3. Charger, BMS

- Introduction of ETH, Ltd and Charger

- Introduction of PowerLogics (BMS)

1. Overview of Li-B

1 8 6 5 0

Diameter : Φ18 mm Height : 65 mm

LixC6 LixCoO2

Li + Conducting Electrolyte Cu Current Collector

Al Current Collector

Separator

Li +

e-

e-

e-

e-

e-

e-

e- A

C6 + LiCoO2 LixC6 + Li1-xCoO2

Charging

Discharging (Anode) (Anode) (Cathode) (Cathode)

Charging/Discharging Principle Structure (Cylindrical cell)

Anode (-) Cathode (+)

Li-B is a rechargeable battery in which Li ions move from the anode(-) to

the cathode(+) during discharge, and back in charging.

2. Manufacturing Process

•Active material •Current Collector •Binder

Coating / Drying Roll Press Slitting Vac. Dry

DRY ROOM

Formation & QC

Winding & Assembly Washing & Dry Shipment

•Solvent

mixer

mixing

•Anode (Cu-foil) •Cathode (Al-foil)

•Pancakes

•Cathode

•Anode

•winding

•J/R insertion

•EL feeding

Contents

1. Introduction

- LG Chem, Ltd.

- TFT organization

2. Li-B Battery Pack

- Overview of LG Chem Li-B

- Electrical Design

- Mechanical Design

- Reliability Test

3. Charger, BMS

- Introduction of ETH, Ltd and Charger

- Introduction of PowerLogics (BMS)

We LGC designed Li-B pack based on the system information given by ADB

through several conference calls

Items Value

Atmosphere temp. 22℃ ~ 34℃

Max target speed 50 km/h

Wheel inch 18.7"

Max load 500kg

Target gradeability 15deg

Pack capacity 3kWh

<E-Trike information> <Motor Spec.>

1. System Information

Item ADB Requirement Li-B Pack remarks

Capacity (discharging) 3kWh Min. 3kWh

Test result 80% Charging time 100min. 80% : 91min.

Weight ≤ 50kg Max. 42kg

Warning Low battery warning LED indicator Optional feature

Voltage control must done

Fully controlled by BMS

Current control must done

Temp. control must done

Cell balancing must done Safe

ty

Perf

orm

an

ce

2. Design Concept - Performance Summary

From test data, LGC Li-B pack shows fulfilling customer request

<30A Discharge & Charge Test result> <Li-B pack feature>

2.4kWh

3kWh

Item ADB

Requirement Li-B Pack

Capacity

(discharging) 3kWh Min. 3kWh

80% Charging

time 100min. Max. 95min.

Weight ≤ 50kg Max. 42kg

Warning Low battery

warning LED indicator

2. Design Concept - Performance Capacity, Charging Time

LED Display

51.5V↓ 51.5V↑ 54V↑ 57V↑

1 LED

ON

2 LED

ON

3 LED

ON

4 LED

ON

Use LED Display in order to warn low battery status (Option item)

<Voltage Vs. LED> <LED indicator>

Warning time is adjustable value

→ Need to discuss about optimized warning time for E-trike

Warning

time

Current Voltage

0 3

0

6

0

9

0

110

Time [min]

Vo

lta

ge

[V

] 2. Design Concept - Performance Low battery warning

3. Design Concept - Safety

Item ADB Requirement Li-B Pack remarks

Capacity (discharging) 3kWh Min. 3kWh

Test result 80% Charging time 100min. 80% : 91min.

Weight ≤ 50kg Max. 42kg

Warning Low battery warning LED indicator Optional feature

Voltage control must done

Current control must done

Temp. control must done

Cell balancing must done Safe

ty

Perf

orm

an

ce

Summary

<BMS Top Side>

<BMS Schematic>

.

<BMS Bottom Side>

Voltage

Protection

Circuit

Temp.

Protection

Circuit

Cell balancing

Circuit

Current

Protection

Circuit

3. Design Concept - Safety BMS

Billing Err. Detection

Status

Repair

4. Further Suggestion Diagnosis System

Contents

1. Introduction

- LG Chem, Ltd.

- TFT organization

2. Li-B Battery Pack

- Overview of LG Chem Li-B

- Electrical Design

- Mechanical Design

- Reliability Test

3. Charger, BMS

- Introduction of ETH, Ltd and Charger

- Introduction of PowerLogics (BMS)

1. Design Concept

Pack Specification

Pack Concept

Basic Pack Etrike Inner Pack

Item Requirement Li-B Pack

Capacity 3 kWh Min. 3 kWh

Size Trunk size 457 x 353 x 348 mm

(L x W x H)

Weight Max. 50 kg Max. 42 Kg

Configuration - 1 kWh pack × 3 ea

Voltage Range - 49.5 ~ 63 V

(nominal 54 V)

427.2 mm

255 mm

323.5 mm

- Capacity: 1 kWh

X 3 373 mm

85 mm

290 mm

348 mm

353 mm

457 mm

- Capacity: 3 kWh - Capacity: 3 kWh

LGC can meet Customer Mechanical Requirements with Basic Pack 3 set

Etrike Pack

2. Pack Assembly

Contents

1. Introduction

- LG Chem, Ltd.

- TFT organization

2. Li-B Battery Pack

- Overview of LG Chem Li-B

- Electrical Design

- Mechanical Design

- Reliability Test

3. Charger, BMS

- Introduction of ETH, Ltd and Charger

- Introduction of PowerLogics (BMS)

/ Test Item

Test Method

Criteria Result

Condition SOC

1 Short Circuit 5mΩ register No Fire, No Explosion Under test

2 Short Circuit 5mΩ register No Fire, No Explosion Under test

3 Over Charge charging until 200% SOC No Fire, No Explosion Under test

4 Over Discharge discharging pack during 1 hr with 1C current No Fire, No Explosion Under test

Electrical Reliability Test (EV)

1. Reliability Test Items Electrical

2. Vibration / Shock

Vertical (Z) Horizontal (X, Y)

Z

X / Y

3. HALT (Highly Accelerated Life Test)

X

Y

Z

4. Drop

1.2 M