MPP Solar II-4810E Lithium-Iron Phosphate Battery Module User Manual

Wall-mounted
Lithium-Iron Phosphate
Battery module
User Manual

Overview

Thank you for purchasing Lithium battery module. This manual describes the installation and product parameter settings etc. Please read this manual before you install the battery. Follow the instruction carefully during the installation process and keep this manual in safety for further information.

Readers
This document provides technical details regarding the tools and infrastructure used by the following users:

• Sales engineer
• Technical support engineer
• Installation engineer
• Application engineer
• Maintenance engineer

Conventions and used symbols
The following symbols may appear in this article, and they are represented as follows:

indeath or serious personal injury
• Warning| • Used as a warning of a middle or low potential hazards, if notavoided, it may cause minor or normal injury.
• CAUTION| • Used as a warning of potential dangers, if ignore this information,it may result in equipment broken, data lost, equipment performance decrease and other unpredictable result.
• INTRO| •  Represents the supplement information of main text to emphasizeor replenish

Introduction

LIO II-4810E lithium iron phosphate battery is one of new energy storage products. It can be used to support reliable power for various types of equipment and systems. LIO II-4810E is especially suitable for application scene of high power, limited installation space, restricted load-bearing and long cycle life.
LIO II-4810E has built-in BMS battery management system, which can manage and monitor cells information including voltage, current and temperature. What’s more, BMS can balance cells charging and discharging to extend cycle life. Multiple batteries can connected in parallel to expand capacity and power in parallel for larger capacity and longer power supporting duration requirements. Certification: UL 1642, UN38.3.

2.1 Product Overlook

1. Power on/off button: Power on, wake up or shut off the battery module.
   • If battery module is in sleep-mode, press and hold the button for approximately 3~6 seconds to wake up the module and the all indicators will light up in sequent for 0.5 seconds.
   • If battery module is working, press and hold the button for approximately 3~6 seconds to enter sleep mode.

2. LCD display

3. Operation buttons

4. Battery connectors (including 2 positive poles and 2 negative poles): Using 4-pin terminals, from left to right is defined as battery+, battery+, battery-, battery-, which is connected with the power transmission line for charging and discharging.

5. On/Off indicator

6. RUN LED: During charging, the “RUN” light will be flashing.

7. ALM LED: When the battery is at fault, “ALM” LED is lighting red.

8. SOC LEDs: Six LEDs indicating battery capacity.
   Condition| Charging| Discharging
   ---|---|---
   Capacity indicator| L6| L5| L4| L3| L2| L1| L6| L5| L4| L3| L2| L1
   Capacity %| 0-17%| Off| Off| Off| Off| Off| Flash 2| Off| Off| Off| Off| Off| On
   18-33%| Off| Off| Off| Off| Flash 2| On| Off| Off| Off| Off| On| On
   34-50%| Off| Off| Off| Flash 2| On| On| Off| Off| Off| On| On| On
   51-66%| Off| Off| Flash 2| On| On| On| Off| Off| On| On| On| On
   67-83%| Off| Flash 2| On| On| On| On| Off| On| On| On| On| On
   84-100%| Flash2| On| On| On| On| On| On| On| On| On| On| On
   RUN LED| On| flash 3

Note: Flash1- light 0.25s/off 3.75 seconds; Flash 2-0.5 slight /0.5s off; Flash 3 -0.5 slight/1.5s off.
RUN, ALM and SOC LEDs will display battery status as below table.

Condition| Normal/ Alarm/ Protection| RUN| ALM| Capacity LED| Description
---|---|---|---|---|---
| | L6| L5| L4| L3| L2| L1
Shutdown| Sleep mode| Off| Off| Off| Off| Off| Off| Off| Off| All off
Standby| Normal| Flash 1| Off| According to the battery indicator| Standby mode
Alarm| Flash 1| Flash 3| Low battery
Charging| Normal| On| Off| According to the battery capacity (Check SOC indicator table)| If overcharge occurs, ALM does not flash.
Alarm| On| Flash 3
Overcharge protection| On| Off| On| On| On| On| On| On| If there is no utility power, the indicator is in standby state.
Over temperature over current, and failure protection| Off| On| Off| Off| Off| Off| Off| Off| Stop charging.
Discharging| Normal| Flash 3| Off| According to the battery capacity|
Alarm| Flash 3| Flash 3
Under voltage protection| Off| Off| Off| Off| Off| Off| Off| Off| Stop discharging.
Temperature overcurrent short circuit and reverse connection, failure protection| Off| On| Off| Off| Off| Off| Off| Off| Stop discharging.
Failure| | Off| On| Off| Off| Off| Off| Off| Off| Stop charging and discharging.

Note: Flash 1- light 0.25s/off 3.75 seconds; Flash 2-0.5 slight /0.5s off; Flash 3 -0.5 slight/1.5s off.

9. CAN & RS485: CAN Communication Terminal:(RJ45port) follow CAN protocol, for output battery information.
   CAN
   Using 8P8C vertical RJ45 socket| RS485
   Using 8P8C vertical RJ45 socket|
   ---|---|---
   RJ45 Pin| Definition description| RJ45 Pin| Definition description
   1, 3, 6, 7, 8| NC| 9, 16| RS485-B1
   4| CAN-H| 10, 15| RS485-A1
   5| CAN-L| 11, 14| GND
   2| GND| 12, 13| NC
10. RS232 port: (RJ11 port) follow RS232 protocol, for manufacturer or professional engineer to debug or service.
    | RS232
    Use 6P6C vertical R11 socket
    ---|---
    RJ11 pin| Definition description
    2| NC
    3| TX
    4| RX
    5| GND
11. Grounding screw
12. Extension ports: BMS signal transmission for battery modules and for battery capacity extension in parallel.
13. Dry contact: Dry Contact Terminal: provided 2 ways input and 2 ways output dry contact signal.
14. ADD: It indicates the unique ADD code for each battery module. It’s required to assign a unique ID to each battery module for parallel operation. Maximum 15 battery modules can be operated in parallel. The explanation of its dial switch as shown in below table.
    Address Code| ADD| PACK Definition| Address Code| ADD| PACK Definitio n
    ---|---|---|---|---|---
    1| 2| 3| 4| 1| 2| 3| 4
    ON| OFF| OFF| OFF| 1| PACK1| ON| OFF| OFF| ON| 9| PACK9
    OFF| ON| OFF| OFF| 2| PACK2| OFF| ON| OFF| ON| 10| PACK10
    ON| ON| OFF| OFF| 3| PACK3| ON| ON| OFF| ON| 11| PACK11
    OFF| OFF| ON| OFF| 4| PACK4| OFF| OFF| ON| ON| 12| PACK12
    ON| OFF| ON| OFF| 5| PACK5| ON| OFF| ON| ON| 13| PACK13
    OFF| ON| ON| OFF| 6| PACK6| OFF| ON| ON| ON| 14| PACK14
    ON| ON| ON| OFF| 7| PACK7| ON| ON| ON| ON| 15| PACK15
    OFF| OFF| OFF| ON| 8| PACK8|
15. Reset: Press RESET key for 5 seconds, then start the device, press the RESET key for 5 seconds again, then shut down the device. When the system is running, should there be an exception, use this button to reset the system (press / release) to ensure the stability of the system.

2.2 Menu Operation Instruction
The LCD display interface is user-friendly, as shown in below figure. It provides 320 x 240 dot matrix graphic display.
The LCD is able to display the alarm information in real time, and provides the historical warning records for the user to query, and provide a reliable basis for fault diagnosis.Users can easily browse the battery parameters through the LCD interface, and obtain timely access to information on the current state of the battery. The interface displays a total of 4 menu keys, the functions described as follows.
The commonly used button function

| Main menu
---|---

| Confirm, enter

| Page down

| Return, launch

Operation Procedure

1. Press once, the LCD display screen light up, then the welcome interface will be shown.
2. Followed by the prompt and then click once to enter the main menu bar.
3. Scroll page up, Enter the Menu screen, when the points to the corresponding bar, press Enter to confirm.
4. Go back on the menu bar, click button.

2-3. The Working Principle
Lithium battery pack is equipped with charging and discharging management module and monitoring module. Charge and discharge management module protects battery charge and discharge functioning, prevents overcharging, discharge over-current, the charging process by the adapter charger to the DC input form, the discharge process is completed by connecting the load discharge.
The monitoring module has the balance function and power, temperature and SOC. The monitoring module transmits the real-time information collected in the operation of the product through the Telecom protocol network to the monitoring platform, and the user can observe the operation status of the battery in each group through the display screen.
A single module has a 51.2V 100Ah, with a large capacity, can be used in accordance with user requirements arbitrary combination as shown in below figure.

2-4. Product Features
Integrated lithium battery pack for Wall-Mounted has the following remarkable characteristics:

• The whole module is non-toxic, non-polluting and environmentally friendly;
• The system can automatically manage charge and discharge state and balance current and voltage of each cell;
• Flexible configuration, multiple battery modules can be in parallel for expanding capacity and power
• Adopted self-cooling mode rapidly reduced system entire noise;
• The module has less self-discharge, up to 3 months without charging on shelf ; no memory effect, excellent performance of shallow charge and discharge;
• Working temperature range is from -20℃ to 60℃, (Charging 0~60℃; discharging -20~60℃) with excellent discharge performance and cycle life;

INTRO:

1. Telemetry: voltage, current, temperature, SOC, SOH (optional), etc.
2. Tel-signalling state of charge and discharge, overcharge / over-current, under voltage over-current alarm / alarm, environment / battery /PCBA/ battery temperature alarm, low environmental temperature alarm, battery capacity is too low, the battery temperature /voltage / current sensor failure alarm, battery failure alarm (just not cut off the monomer pressure high limit alarm) (optional), battery failure alarm (optional).
3. Remote control: charge / discharge (optional), alarm sound off, intelligent intermittent charging mode, current limiting charging mode.
4. Optional: Battery charge / discharge management parameters and the output parameters of the switching power supply system.

2-5. Multiple Batteries in Parallel
To extend backup time, this battery module is allowed to connect up to 15 pieces in parallel. The recommended minimum battery module number is listed as below.

Parallel connection wiring

1. Wiring diagram for small power rated inverters (≦5KW)
2. Wiring diagram for big power rated inverters (>5KW)

2-6. Battery Active Equalization
Because the battery capacity, internal resistance, voltage and other parameter values are not completely consistent, this difference causes the battery with the smallest capacity to be easily overcharged and discharged during charging, and the smallest battery capacity becomes smaller after damage, entering a vicious cycle. The performance of single battery directly affects the charge and discharge characteristics of the whole battery system and the reduction of battery capacity. BMS without balance function is just a data collector, which is hardly a management system. BMS active equalization function can realize the maximum continuous 1A equalization current, transferring the high-energy single battery to the low-energy single battery, or using the whole group of energy to supplement the lowest single battery. During the implementation process, the energy is redistributed through the energy storage link, so as to ensure the battery consistency to the greatest extent, improve the battery lifecycle and delay the battery aging.

Installation Guide

3-1. Installation Precaution Notes
Comply with local laws and regulations
When operating the equipment, make certain to comply with local laws and regulations. Personnel requirements

• Technicians who are responsible for installation and maintenance are required to undertake strict training at first. Master the correct methods for operation and safety, only then the installation, operation and maintenance can be carried out.
• In order to maximize the efficiency of the equipment, to obtain best possible operating results, and ensure maximum lifespan, please pay careful attention to the correct installation and usage requirements. Personal safety
• Insulated tools and gloves should be used and worn at all times – During the installation process, watches, bracelets, rings and other metal products should be removed.
• Avoid any fall or collision during the installation process.
• Do not remove the battery components. The maintenance of the battery should be carried out by a professional engineer.
• Should be operated and supervised by engineer who have experience and can take preventive measures for potential hazards of battery.
  Field and environment Site requirements

1. Cleanliness
   Lithium battery packs cannot be placed in or near garbage disposals, or accidentally dropped or placed in smaller disposal units, as their interaction with metals is likely to cause short circuits and endanger the system and personal safety.

2. Fire protection
   The room is prohibited to store flammable, explosive and other dangerous goods, and it should be equipped with effective fire equipment (such as CO2 fire extinguishers).

3. Ventilation and heat dissipation
   In order to facilitate the operation and maintenance of equipment for the heat, the equipment should be left around (50~30) cm around at least, left about 50cm for the upper space. The space should be equipped with exhaust fan, to maintain good indoor ventilation.

4. Installation requirements
   Installation should be carried out as shown in figure 3-1 in order to avoid possible risks.
   Put the lithium battery on the ground (to avoid tilt, uneven ground).
   Avoid placing in the sunlight, rain or wet surfaces.

5. Environmental requirements
   Ambient temperature: ( -10~+40) ℃.
   Relative humidity level: 0%RH~95%RH, no condensation.
   Cooling method: air cooler.
   Height above sea level: match to the standard requirement of GB3859.2-93.
   Verticality: no vibration and the vertical inclination does not exceed 5º.
   Pollution level: Levelⅱ

Recommended operating temperature (20~25) ℃, humidity level control within 50%.

CAUTION

• Do not install in the working environment with metal conduction type dust. Do not put anything containing corrosive gases.
• Do not put anything in the dust concentrated areas.
• Do not place any items on the top of lithium-ion battery pack. People could not sit on the battery.

Power Check
Before installation, please confirm that the load capability of inlet wire meets the requirements of the new equipment. Check to see if the power supply corresponds to the equipment nameplate of the voltage and frequency and if the current capacity has decreased due to the aging of the wire.
If in doubt, please check with your local power supply Consultation Department.
Ground wire
Earthing terminal is ready; zero voltage required in the room cannot exceed 5V. DC output voltage and load capacity
Lithium-ion battery pack of rated DC output 51.2V.
DC output power
CAUTION
When installing the lithium-ion battery pack, the user should check the lithium- ion battery pack in advance to make sure that the contacts and connectors are safely in place to avoid an open circuit or short circuit fault.
During installation, do not connect the lithium batteries polarity in reverse or in any way incorrectly, to avoid causing a short circuit.
Please do not connect the terminals with no security or insulation protection, so as to avoid the risk of electric shock.

3-2. Installation Procedure
3-2-1. Unpacking and inspection
Lithium batteries and accessories use packaging of cardboard boxes or wooden boxes. When unpacking, be careful when dismantling. Inspect the device and accessories according to the package list, to ensure it’s complete and make certain nothing was damaged during shipping.
Before clearing the packaging, make sure that all parts are included. If equipment or accessories are damaged in transit, or incomplete or incompatible, the equipment, accessories and order contracts should be recorded and local dealer should be contacted immediately.
The site needs to be tidied and inspected once again to make sure the audit documents are in order for the audit. Before inspection, the site should be clean.
3-2-2. Installation Tools
Potential commonly used tools as shown in below tables the field technician will increase or decrease the amount according to the construction.
Table 1: General purpose tools

The appearance of the tools, parameters, and names

Adjustablewrenches| Phillips screwdriver| Slotted screwdriver| Socket wrench
| | |
Torque wrench| Open-endwrenches| Double offset ring spanner| Diagonal cutting pliers
| | |
Wire cutters| Needlenosed pliers| Marking pen| Working gloves
| | |
Ladder (2m)| Flashlight| Tape measure| Impact drill
| | |

Table 2: Tools for delivery and unpacking

The appearance of the tools, parameters, and names

Manual forklifts| Electric forklift| Sling

(weight≥ 400kg)

| Leverage (weight≥400kg)
| | |

Table 3: Electrical installation tools

The appearance of the tools, parameters, and names

Insulated gloves| Power cable crimping plier| Wire stripping pliers| Electrical tape
| | |

Table 4: Measuring Tools

The appearance of the tools, parameters, and names

Clamp the flow table

3-3. Installation Method

1. Use expansion screws to fix the accessory bracket shown below on the wall.
2. Hang the battery box on the stan
3. Use M6 screws to secure the case from both sides.

Maintenance

In order to ensure the lithium-ion battery pack achieves the longest life cycle, the maintenance technician should carry out regular inspections and maintenance care. The maintenance records should be complete and routine, so that subsequent verifi cation of management parameters of the battery pack can be tracked.
4-1. Electrical Maintenance
Maintenance of the electrical parts may refer to table.

Items| The checking Points| Methods| Repair conditions| Repair solution
---|---|---|---|---
Electrical| Check if the output voltage is normal.| Multimeter| Battery voltage out of range set.| See the following troubleshooting

section

Fault inspection| Check if lights are normal.| Visual inspection| Alarm|
Cable| Insulation, Terminal| Visual inspection| Insulation cracks, aging| Replace the cable.
Exfoliated, corrosion of the terminals.| Replace the terminal block.

4-2. Battery Maintenance

sunlight.
Visual inspection| If there is any breakage, leakage or deformation, isolate the problematic battery pack, take a photograph and replace the battery
Quarterly| Visual inspection| Use cotton cloth to clean the appearance. Be careful during cleaning because the voltage is high.
Connection status| • Check each terminal and bolt. If it’s loose, tighten it again.
• Check the cause if the cable temperature exceeds 40°C.
Every 6 months| Measure and record the voltage| • At the final stage of charging, record the voltage; make sure the positive and negative voltage of the battery are the same. Otherwise, check and repair the corresponding connection cable.
• Connect the discharge data at least once every six months for the first year.
• In the second year, capacity is determined by every three months. Review history through the RS232, which shows frequent overcharge of a battery in the alarm message, indicating that the batteries have reached the charging and discharging protection point. This may result in time for preparing electricity is not enough and suggest changing the battery immediately.

4-3. Trouble Shooting Steps
① Problem determination based on:

1. Whether the battery can turn on or not;
2. If battery is turned on, check the red light is off, flashing or lighting;
3. If the red light is off, check whether the battery can charge/discharge or not.

②Preliminary determination steps

1. Battery cannot turn on, switch on the lights are all no lighting or flashing.
   If the battery external switch is ON, the RUN light is flashing, and the external power supply voltage is 51.2V or more, the battery still unable to turn on, please contact local dealer or installer.

2. The battery can be turned on, but red light is lighting, and cannot charge or discharge. If the red light is lighting, that means system is abnormal, please check values as following:
   a. Temperature: Above 50℃ or under -10℃, the battery could not work.
   Solution: to move battery to the normal operating temperature range between -10℃and 50℃
   b. Current: If current is greater than 100A, battery protection will turn on.
   Solution: Check whether current is too large or not, if it is, to change the settings on power supply side.
   c. High Voltage: If charging voltage above 58.4V, battery protection will turn on.
   Solution: Check whether voltage is too high or not, if it is, to change the settings on power supply side.
   d. Low Voltage: When the battery discharges to 43.2V or less, battery protection will turn on.
   Solution: Charge the battery for some time, the red light turn off
   Excluding the four points above, if the faulty is still cannot be located, turn off battery and repair.

3. The battery cannot be charged or discharged
   a Cannot be charged:
   Solution: Disconnect the power cables, measure voltage on power side, if the voltage is 53~54V, restart the battery, connect the power cable and try again, if still not work, turn off battery and contact local dealer or installer.
   b. Unable to discharge
   Solution: Disconnect the power cables and measure voltage on battery side, if it is under 43.2V, please charge the battery; if voltage is above 51.2V and still cannot discharge, turn off battery and contact local dealer or installer.

Specification

5-1. Technical Specification
The main physical dimensions for a single module is shown below and refer to below specification table for r a single battery module. Outline of the unit Specification of one single module

Storage: -20 to +60°C

5-2. Main performance index of the battery
The electrical performance is listed below table.

600min
0.5C discharge performance| Standard battery pack within 1h with 0.5C discharge current to 43.2V and record the discharge time.| Discharge time≥ 115min
High temperature performance| After the battery pack is charged in the standard (60 ± 2) ℃ high temperature box for 4 hours and the discharged to 43.2V at 0.1C, record the discharge time.| Discharge time≥ 600min
Low temperature performance (-10°C)| After charging, the battery pack is put in the low temperature box of (-10± 2) ℃ for 6 hours, then discharged to 43.2V at 0.2C at this temperature, record the discharge time.| Discharge time≥ 180min
Low temperature performance (-20°C)| After charging, the battery pack is put in the low temperature box of (-20± 2) ℃ for 6 hours, then discharged to 43.2V at 0.2C at this temperature, record the discharge time.| Discharge time≥ 120min

5-3. Battery Characteristics
Charging and discharging graph is listed below.
Charge Curves

Environment Protection

6-1. Environmental Label
The product described in this manual does not contain toxic and hazardous substances or elements. It is a green product. It can be recycled after being discarded and should not be discarded at will. The environmental label is shown below.

6-2. Recycle
This mark indicates that the product can not be classified with other waste. In order to prevent potentially hazardous substances from hazardous waste disposal hazards to the environment and human health, please refer to the classification of waste recycling in order to promote the sustainable use of material resources.
In order to recycle the used equipment, please use the recycling system or contact the manufacturer or seller of the product or the local authority to manage the product.

APPENDIX

7-1. Connection Cable
If groups (4~10) of parallel sets of lithium batteries are not supplied by battery supplier, you can choose the customized wiring cables to replace. Relevant technical requirements are the feeder cable number and the number of parallel battery pack is consistent, and the specifications of each extension cable (length, diameter, and material) are the same.
For example, a customized six parallel wiring cable diagram as shown below. According to the customer requirements, selecting the appropriate connector, cables, extension cable specifications, refer to relevant cable specifications given in below table.
Corresponds to AWG line number table

AWG| Diameter| cross- sectional area (mm2 ）| Resistance （Ω/km）| Rated current （A）| Maximum current (A）
---|---|---|---|---|---
mm| inches
0000| 11.68| 0.4600| 107.22| 0.17| 423.2| 482.6
000| 10.40| 0.4096| 85.01| 0.21| 335.5| 382.6
00| 9.27| 0.3648| 67.43| 0.26| 266.2| 303.5
0| 8.25| 0.3249| 53.49| 0.33| 211.1| 240.7
1| 7.35| 0.2893| 42.41| 0.42| 167.4| 190.9
2| 6.54| 0.2576| 33.62| 0.53| 132.7| 151.3
3| 5.83| 0.2294| 26.67| 0.66| 105.2| 120.0
4| 5.19| 0.2043| 21.15| 0.84| 83.5| 95.2
5| 4.62| 0.1819| 16.77| 1.06| 66.2| 75.5
6| 4.11| 0.1620| 13.30| 1.33| 52.5| 59.9
7| 3.67| 0.1443| 10.55| 1.68| 41.6| 47.5
8| 3.26| 0.1285| 8.37| 2.11| 33.0| 37.7
9| 2.91| 0.1144| 6.63| 2.67| 26.2| 29.8
10| 2.59| 0.1019| 5.26| 3.36| 20.8| 23.7
11| 2.30| 0.0907| 4.17| 4.24| 16.5| 18.8
12| 2.05| 0.0808| 3.332| 5.31| 13.1| 14.9
13| 1.82| 0.0720| 2.627| 6.69| 10.4| 11.8
14| 1.63| 0.0641| 2.075| 8.45| 8.2| 9.4

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