Narada + Partners Solution

Lithium Battery LiFeP04 Solution Proposal

2

3

Advantage of LiFePO4 Li-Ion

More safe More cabinet space for equipment Less weight for rooftop or pole-

mounted sites No active cooling system required Easier site planning and installation Simplified power systems High operational reliability Long serving life

Dev

elop

Cell performance

Module performance

Size

Layout

Connection

Thermal management

Etc.

BMS function

Lithium Battery Module LifePo4 - 48V Series

• Focus Capacity 48 V 50Ah to 48V70Ah

• Customised Solution to market needs

• BMS Monitoring

• RoSH standard complied

• RS 485 and 232 communication

interface included

• Operation safety

• Fast charge and long cycle life

• Light for rack mount

• Force cooling is optional

• Steady service performance

Lithium Ion Battery Module

Inside layout of battery module

Lithium Ion Battery Module

Inside layout

Battery Cell Layout

Battery Module Composition Cell

There are 15 cells connected in series combination. Each cell is of 3.3V(OCV) and 75AH Normal charge voltage 3.6V/cell Cell voltage range is 2.5V to 3.85V

Battery monitoring System ‘BMS’• Measurement

• Cell voltage• Cell temperature• Battery Module Current

• Cell balancing • Calculations

• Battery capacity• Alarms• RS485 communication

BMS – Battery Monitoring System

48V Smart LiFePO4 Battery

Key Features• Smart Battery Management System• Integrated Data logging system• Embedded web server• SNMP Interface• Rs485 communication• Integrated Circuit Breaker

Battery Specification

Rate Voltage 48V

Rated Capacity 40Ah/50Ah/80Ah/100Ah

Discharge Current Up to 1.0C

Charge Current Up to 0.5C

Charge Voltage 54+/- 0.5V

Communication Port RS485 / RJ45

LCD Full Color LCD touch screen Display

Data logger Up to 4GB of data

Breaker MCB (default) / remotely activated Relay (optional)

Temperature Range Discharge -20degC to 60degCCharge 0 to 60degCStorage 0 to 40degC

Telco Lithium Battery 48V 300AH Application

Material: LiFePO4/Aluminium case Fast charge: 2.5hrs Save space : 48NPFC50(3U) x 6 or 48NPFC70(3U) x 4 Standard size: fit to standard 19' cabinet Characteries: Can work under temperature -20C to 60C degree

(3U) X 6 or x 4

~ 48V300Ah

BMS Monitoring

LI-ION vs VRLA BATTERY

View of 48NPFC50 Module

No. Name Functions Remark

1 SOC Indicators for capacity

There are four green LED lights in front panel indicating SOC. SOC is short for state of charge. Each SOC LED light represents 25% of rated capacity.

2 ALM Indicator for alarms There is one red LED light in front panel indicating alarms.

3 RUN Indicator for running status

There is one green LED light in front panel indicating running status.

4 ADDSystem communication address

ADD is applicable to modules connected in parallel. ADD consists of four binary bits

5 RS-232Up-link communicationport

Upload data. Contents of data transmit include BMS parameters, battery running status, alarms, etc. Generally, speed rate of RS-232 is 1200bps. RS232 up-link communication can be available for the battery module with a binary communication address of0000 (Master PACK).

View of 48NPFC50 Module

No. Name Functions Remark

6 RS-485Software communicationport

It is adopting RS485 series port communication pattern to upload data. Communication of modules connected in parallel (Slave PACKs) is available through RS 485. Data of slave PACKs will be transmitted to Master PACK.

7 RESET Reset button Press RESET button when abnormity occurs to assure stability of battery performance.

8 Dry contact Indicator for running status Used for battery protection

9 Switch ON/OFF switch When turn-off, battery get into sleep mode, and cut-offoutput, the alarm output also will be stopped.

10 Battery Output Nominal 48V output Using terminals with four cores. Polarities are +, -, +, -

from left to right. The two ‘+’ and ‘-’ are equal relatively.

Executive Summary

Site Type: OutdoorSite Conditions:1. Roadside /Outdoor Cabinet2. Bad Grid3. Limited area

Technical AnalysisA. LITHIUM ION BATTERY4. Longer life of existence due to more number of cycles.

Approximately 10-year life span5. Faster charging time6. Outdoor installation is more ideal because of its high thermal

capacity7. Less space consumption (typical size is twice smaller than a 1-

bank VRLA battery)8. Smarter. It can be monitored individually through its own BMS9. Safety. Does not contain toxic materials and no gas emission10.Higher energy transfer efficiency

B. VRLA BATTERY11.Less cost at same capacity12.Availability in higher Ampere-Hour capacities

Remote Energy Monitoring Unit

Hybrid System-Grid/Battery/D.G230VdcAC & -48Vdc6KW- 1 Phase14KWhr Energy StorageLi-Ion Battery

48V Smart LiFePO4 Battery

Customised Lithium Battery Solution

Lithium Battery Solution

Customised Lithium Battery Application for Telecom

48V/80Ah 2000VA system

19

Solution for Saving Opex Cost

20

Reliance 48V300Ah Outdoor

China Telecom48V10Ah Outdoor

China Mobile48V200Ah Outdoor

State GridEnergy Storage

Lithium Battery Market Reference

Thank You