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The views expressed in this paper/presentation are the views of the author and do not necessarily reflect the views or policies of the Asian Development Bank (ADB), or its Board of Governors, or the governments they represent. ADB does not guarantee the accuracy of the data included in this paper and accepts no responsibility for any consequence of their use. Terminology used may not necessarily be consistent with ADB official terms.
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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
