EG4 EG4-LL Manuel utilisateur
EG4-LL Rack Mounted
48V 100Ah/24V 200Ah
User Manual
1.0.0
Table of Contents
EG4-LL Battery Diagram……………………………………………………….2
About This Manual……………………………………………………………...4
Introduction………………………………………………………………………5
Overview………………………………………………………………………….6
Installation………………………………………………………………………..6
EG4 Battery Rack Interface……………………………………………………6
Charging………………………………………………………………………….8
Introduction to the BMS……………………………………………………….9
Battery Communications…………………………………………………….10
LCD Screen and PC Software……………………………………………….11
Battery Storage………………………………………………………………..16
Battery End of Life…………………………………………………………….17
Troubleshooting……………………………………………………………….17
Warranty…………………………………………………………………………19
1
EG4-LL Battery Diagram
No.
Item
Function Description
Remarks
1
Grounding
screw
Provides a safe route for grounding
2
Positive
terminal
Positive battery connection
M6 bolt (x2)
3
Display
Shows battery information
4
Breaker
Power output switch
5
ID
Assigns unique address to each module
DIP switch
2
6
CAN
CAN communication interface
Inverter communication
7
Reset
Emergency restart button
8
RS485
RS485 communication interface
Inverter communication
9
ALM
Alarm indication LED
10
Battery-Comm
Inter battery communication when paralleled
11
RUN
Operation indication LED
Always on when the system is
running
12
SOC
The state of charge
4 green lights mean fully
charged
13
Negative
terminal
Negative battery connection
M6 bolt (x2)
14
ON/OFF
BMS control
BMS On/Off switch
15
Handle
For carrying and handling the battery
3
About This Manual
Purpose
This manual describes installation, commissioning, operation, and troubleshooting. Please read the
manual fully and carefully before installing and operating. Keep this manual for future use.
Scope
This manual provides basic installation guidelines as well as information on tools and wiring.
Safety Notice
Attention: The following contains important safety and operating instructions. Read and
keep this manual for future reference.
1. Before installing or using the unit read all instructions and cautionary markings on the unit and all
appropriate sections of the manual.
2. CAUTION - Do not disassemble the unit. Take it to a qualified service center when service or
repair is required. Incorrect re-assembly may result in a risk of electric shock or fire.
3. To reduce the risk of electric shock, shutdown and disconnect all wiring before attempting any
maintenance or cleaning. Turning off the unit alone will not reduce the risk of shock or injury.
4. CAUTION - Only qualified personnel can install this equipment.
5. NEVER charge a battery below the specified minimum temperature; refer to the battery data
sheet.
6. Wire size is critical for safe operation, and optimal performance of the equipment. Refer to an
accredited sizing resource or cable manufacturer specifications to meet charge/discharge
requirements.
7. Use caution when working with metal tools on or around all systems and batteries. Risk of
electrical arcs and/or short circuiting of equipment can lead to severe injury and damage.
8. Strictly follow installation procedure when connecting/disconnecting DC terminals. Refer to the
Installation section of this manual for details.
9. The included breaker is not a guarantee of battery protection. Size and install the correct
overcurrent protection for conductors and battery if not included with the product.
10. Grounding - The grounding system must meet the Authority Having Jurisdiction (AHJ)
requirements for your area.
11. NEVER short DC inputs. Do NOT connect the system to the grid with a shorted DC input.
12. WARNING - Only qualified service personnel are able to service this equipment. If errors persist
after following the troubleshooting table, please contact your retailer for further assistance.
4
Introduction
Product Description
EG4-LL Rack-Mounted lithium battery products are suitable for low-voltage small and medium-sized
energy storage system applications. These products adopt the highest safety performance lithium iron
phosphate cells, with a high-precision battery management system (BMS), which can monitor and collect
voltage, current and temperature of each cell in the module in real time. The BMS also has a passive
balance function, advanced battery control strategy, which can improve the performance of the battery
pack further.
In order to improve the system safety performance of the product, we put two aerosol fire-fighting
modules inside each battery module, which can be used as the last safety barrier of the system in
extreme cases to ensure the safety of your property and life to the greatest extent.
The battery module consists of 16 “AAA” Grade cells , BMS, housing, breaker, and wire. The module can
be placed in a standard 19-inch cabinet and establish communication with the outside devices through
CAN/RS485, and communicate with other modules through RS485. The modules can be connected in
parallel to meet the expansion needs. Maximum inter battery communications support 16 modules.
5
Overview
Included Equipment
When you purchase an EG4-LL battery, you will receive multiple items. These items will be included in the
battery box, or separate packaging within your shipment.
1. (1) EG4-LL battery module
2. Inter-battery communication cable
3. Positive and Negative color coded connection cables
Installation
Needed Tools For Installation
The tools required may vary depending on how you choose to mount your battery. In general, you will
need the following items to install your battery into an EG4 racking solution.
1. 10mm socket and ratchet
2. Phillips head screwdriver
3. Torque wrench of proper size
How to Connect Cables to the Battery Terminals
1. Identify the positive and negative terminals on your battery. These are labeled and color coded.
(Red for Positive, Black for Negative)
2. Verify you have all hardware to attach the cable properly. Check to ensure the bolt insert for the
terminal fully seats and can be tightened to the proper torque.
3. Connect the cables to your battery terminals by removing the terminal bolts, inserting them
through the eyelet of the proper cable, and reseating the bolt into the terminal block to the correct
torque.
4. DO NOT finger tighten the terminal bolts. They require a specific torque (60 in-lb/7nm) to ensure
they do not loosen during operation. Failure to properly tighten the terminal bolts can result in
serious damage and will void your warranty.
EG4-LL and EG4 Battery Rack Interface
1. Grounding - One end of the grounding cable is screwed to the grounding hole at the end of the
chassis, and the other end is connected to a grounding lug on the rack (or cabinet) to ensure a solid
connection.
2. Power cable installation - During single battery operation, the battery terminals can directly connect
to the equipment. When there are multiple batteries used in parallel; first use the power cable to connect
each battery in parallel, and then connect to the equipment or switch terminals.
3. Connect the equipment - Clearly identify the location of the positive and negative terminals of the
system, red to the positive terminal, black to the negative terminal, to ensure no connection errors.
6
4. Communication cable installation - (When a single module is used, please ignore this step) When
multiple batteries are connected in parallel, please set the address code of the battery according to the
DIP Table (make sure there is no duplicate address code). Then connect the Battery-Comm interface of
the battery to each other, finally RS485/CAN interface of the No.1 address battery connects to the inverter
by communication cable.
7
In the above figure, there are 6 EG4-LL 48V 100Ah batteries wired in parallel. This battery bank still
maintains the appropriate 48V needed for most Inverter/Charger systems. However, the Amp hour rating
of this bank has increased to 600Ah.
WARNING: Do NOT parallel batteries by using jumper wires on the double terminals. This will
cause high amperage in the final jumpers and potentially excessive amperage on the battery
terminals.
WARNING: When adding or removing a battery from the rack/cabinet,
turn off ALL batteries and remove all cables from the batteries. This
will ensure that you do not accidentally make contact with live
(powered) busbars. This can cause serious injury and/or death.
Connecting Your Batteries to a Busbar
EG4 recommends that you only use a properly sized (amp rated) busbar to parallel batteries together.
1. Connect the battery cables to your positive busbar by removing the bus bolts, inserting them
through the eyelets of the proper cable, and reseating the bolt into the busbar to 60 in-lbs/7nm.
Repeat with all positive cables.
2. Connect the battery cables to your negative busbar by removing the bus bolts, inserting them
through the eyelets of the proper cable, and reseating the bolt into the busbar to the correct
torque. Repeat with all negative cables.
Battery Charging
Once you are ready to charge your batteries, you must ensure that you use the proper settings. This will
ensure that you don't over-charge or damage your batteries.
1. Bulk/Absorption: 55.5V (+/- 2%)
2. Float: 54V (+/- 2%)
3. Battery Charge Temperature Range: 32°F - 113°F
4. Battery Discharge Temperature Range: -4°F - 131°F
5. Cell Charge Temperature Range: >32°F or <158°F
6. Cell Discharge Temperature Range: >32°F or <158°F
8
What To Expect During a Charge Cycle
It is normal for LFP batteries that have their own internal BMS and that are wired in parallel to
demonstrate a fairly wide variety of SOC readings during any given charge or discharge cycle. Variations
of up to 10% are common. This is not cause for concern or indication you are getting anything less than
the full capacity of your pack. This is caused by even slight variations in wiring resistance to each battery,
internal resistance, temperature differences and variations in cell manufacture. Even a slight variation
causes one battery to take more of the load or charge for a while. Over the duration of the discharge or
charge cycle, this will balance out with the lagging battery then taking the load or charge at the other end
of the cycle resulting in recovering the full listed KWH capacity of the pack. The voltage differences
created as batteries diverge in SOC will eventually cause them to converge at some point in the cycle.
Introduction to the BMS
The BMS (Battery Management System) is designed to protect your battery and battery cells from a
number of situations that may damage or destroy your system. This protection also helps keep your
battery and the battery cells operable for a larger number of life cycles. Each EG4-LL battery is
specifically configured to ensure the optimal performance and operation of your equipment.
PCB Temperature Protection
The BMS will ensure that the PCB (Printed Circuit Board) does not overheat. This is the part that houses
most of the “brains” of the battery. This feature will turn off the battery if it begins to overheat.
Cell Balance Protection
Cell balance ensures that each cell is within a specific voltage range of each other. Cell balance is crucial
for ensuring that your battery is operating properly for its lifespan. This is done automatically at all times.
Environmental Temperature Protection
In periods of extreme heat or cold, it may be dangerous for your battery to operate. Continued operation
in these conditions can cause permanent damage to your battery, and electrical system. To ensure this
does not happen, the BMS is designed to measure the temperature while it is charging/discharging, and
will shut down the battery to prevent damage.
Voltage Protection
The BMS is designed to constantly monitor the voltage of each individual cell and ensure that they do not
become over/undercharged.
Current Protection
The BMS is designed to constantly monitor the charge/discharge amperage, and has built in protections
against exceeding specific parameters. These include built in timers that shut off quickly in the event of
9
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