Mec 24V/200Ah Series User manual
Mainland Energy Conversion Ltd.
Tel: +852 2366 9610
E-mail: [email protected]
www.mec-powersolutions.com
Instruction Manual
LiFePO4 Battery Packs
24V/200Ah Series:
Safety Rules and General Warnings
•Persons, who are not able to use the battery pack in a safe way, because of their physical, sensory or mental incompetence, or because of
their lack of experience, should not use without the control or instruction from a skilled or qualified person.
•The battery pack is not suitable for children – Danger of Life. And beware of risk of electric shock at all time.
•Avoid flammable gases, solvents or vapours all the time. Ensure sufficient air and prevent open flame or sparks. Never incinerate the battery
pack. Explosion RISK!
•Follow strictly the charging and discharging instructions and use only chargers of appropriate specificaitons / charge profiles to charge the
battery pack.
•Make sure the screws at the charge / discharge terminals are always tightened. Screw drivers used for tightening the screws must be well
electrically insulated.
•DO NOT OPEN or DISMANTLE the battery pack. Repair work or cell replacement must only be processed by authorized technical staff.
•Disassembling the battery pack may cause short circuit within the cells, which may further lead to fire, release of harmful gases, electrolyte
leakage or even explosion.
•In case of any obvious damages such as deformed enclosure, electrolyte leakage or the presence of any unpleasant smell, the battery pack
must not be used. Disconnect from the charger or application immediately.
•DO NOT TOUCH the electrolyte. It is harmful. If the electrolyte splashes into your eyes or on your skin, flush your eyes or skin with cold water
immediately and consult the doctor.
•The battery pack should be protected against direct sun light, solar radiation or temperatures over 40°C.
•Keep the battery pack in dry room (rel. humidity <80%). Clean with dry cloth only. Avoid fluid of any kind to get into the battery pack.
Special Features
•Passive cooling and galvanized iron sheet enclosure
•Auto heating mechanism at low temperature (at certain pre-set temperature)
•Specially designed protective circuit to prevent the battery pack from over-charge or over-discharge
•Automatic shut-off at unsafe temperatures
•LED indicators or buzzer giving alarm at certain pre-set state of charge
Product Configuration
1. BMS on/off Switch
2. Generator Charge Terminal
3. Charger Charge Terminal
4. Communication Port
5. Discharge Terminal
6. Handle
IP50 battery pack equipped with a smart battery management system
(BMS) to ensure stable and highly efficient charge and discharge
performance. It can be charged by a lithium-based battery charger.
LiFePO4 is one of the safest Li-ions, recognized with the outstanding
electrochemical performance and endurability.
Instruction Manual 24V/200Ah LiFePO4 Trailer Battery Packs
Version: Sept 2020 - 2 -Mainland Energy Conversion Ltd.
Tel: +852 2366 9610
E-mail: [email protected]
www.mec-powersolutions.com
Preparation –Before Charging or Discharging
General Checking
•Check thoroughly including all the cables for showing no damages
•
Polarity Checking
WARNING: Check the polarity before connecting to the charger or the load
DC Mains Supply Checking
•Make sure the DC cable must not be cut, shortened or extended under any circumstances
•Make sure the mains supply complies with the technical specification requirements of the charger and the battery pack
Charging the Battery Pack
Connecting the Charger to the Battery Pack
•Make sure the mains supply and the charge profiles of the charger comply with the specifications of the battery pack
•Switch off the charger and connect it to the battery pack
•If this is the first charging of the battery pack, please switch the BMS to “ON” mode and wait for 10 seconds. The BMS collects the system
data and makes the battery pack ready for charge. Immediate charging of battery pack after switching on may damage the circuit.
•Connect the charger to mains supply and switch on the charger
Charging the Battery Pack
•Low temperature Charge Method: 0.1C (i.e. 20A) Constant Current Charging @0 oC to 10oC
•Standard Charge Method: 0.2C (i.e. 40A) Constant Current Charging
•Maximum Charge Current: 0.5C (i.e. 100A)
Charging Advice
The working environment of the battery pack may affect the charging performance. The optimum charging condition is from 0°C to 45°C and 60±25%
relative humidity. You are advised to ensure a suitable working environment for the battery pack. Otherwise, the charging efficiency, battery capacity
and battery lifetime may be affected.
Discharging the Battery Pack
Before Discharging
•Make sure that load / device is switched off
•Connect the battery pack to load / device
•If this is the first discharging of the battery pack, please switch the BMS to “ON” mode and wait for 10 seconds. The BMS collects the system
data and makes the battery pack ready for discharge. Immediate discharging of battery pack after switching on may damage the circuit.
•Switch on the load / device
Discharging the Battery Pack
•Standard Discharge Method: 0.5C (i.e. 100A) Constant Current Discharging
•Maximum Discharge Current: 1C (i.e. 200A)
Discharging Advice
The working environment of the battery pack may affect the charging performance. The optimum charging condition is from 0°C to 60°C and 60±25%
relative humidity. You are advised to ensure a suitable working environment for the battery pack. Otherwise, the charging efficiency, battery capacity
and battery lifetime may be affected.
Storage and Caring of the Battery Pack
Battery Storage:
As there are chemical reactions within the cells, the battery performance deteriorates over time and this is absolutely normal. If storage is required,
the battery pack should be charged to 50% state of charge (SOC) for storage. Under different storage conditions, the recommended charging period
is varied:
•The battery pack should be charged and discharged fully once every 3-month for maintenance.
•Under -20°C to 25°C: Charge to 50% SOC and the battery pack can be kept for 3 months
•Under -20°C to 45°C: Charge to 50% SOC and the battery pack can be kept for 1 month
Storing the battery pack under extreme conditions speeds up the degradation of the cells within. In long run, this would greatly reduce the battery
capacity and lifetime.
Battery Care:
•Never expose the battery to high temperatures, as this causes permanent battery capacity loss.
•Never deep-discharge or overcharge the battery, cells can be damaged irreversibly.
•If possible, always disconnect the battery from the load when being stored over long period of time.
•Store battery in a dry and cool place at about 40-60% of its rated capacity.
Instruction Manual 24V/200Ah LiFePO4 Trailer Battery Packs
Version: Sept 2020 - 3 -Mainland Energy Conversion Ltd.
Tel: +852 2366 9610
E-mail: [email protected]
www.mec-powersolutions.com
In casethe BMS goes into protection mode dueto over-charge, over-discharge or unsafe operating temperatures, please switch offthe battery and wait
for 2 seconds. Then, switch the BMS to “ON” mode and wait for 10 seconds. Please make sure the unsafe conditions are cleared, then the procedure
of restarting the BMS would make the battery pack ready for charging / discharging.
Advice for Disposal
It is strictly prohibited to dispose the battery as mixed municipal waste according to the Battery Directive 2002/96/EC. It must
be disposed at the local collection points. To protect the environment, please contact the communal administrative agency
regarding the nearest collection point. The battery pack follows the RoHS-directive EU 2015/863 for the restriction of the use
of certain hazardous substances in electrical and electronic equipment.
Disclaimer of Warranty
The warranty period (see our General Terms and Conditions) starts with the battery pack being dispatched by the manufacturer. The Company accepts
liability by guaranteeing to working hours and spare parts only.
For damages caused by non-observance of the operating instructions, inappropriate start up or handling as well as dismantling, reconstructions or
modifications of the battery pack, the warranty claim expires and the Company assumes no liability for consequential damages to any properties or
persons in connection with or arising from the purchase and use of the battery pack.
We reserves the rights to configure the battery pack as per actual needs and the manual may not reflect the most updated conditions of the product
at all times. Please contact us should you need any technological support.
Technical Specifications
Specifications
Model
24V/200Ah LiFePO4 Battery
Cell Chemistry
3.2V/100Ah LiFePO4 Cells
Cell Configuration
8S2P
Rated Capacity (Ah)
200Ah @0.2C Discharge Rate
Nominal Voltage (V)
25.6V
Rated Energy (kWh)
5.12kWh
Voltage Range (V)
20.0V –28.8V
Ladezyklen | Cycle Life
>2000 cycles with 80% discharge depth at 25oC
Remaining Capacity (%) after 2,000 Charge / Discharge Cycles
≥80% of initial capacity
Charging
Low Temperature Charge Current (A)
0.1C/20A @0oC to 10oC (Constant Current Charging)
Standard Charge Current (A)
0.2C/40A (Constant Current Charging)
Maximum Charge Current (A)
0.5C/100A (Constant Current Charging)
Charge Condition
@0oC to 45oC
Discharging
Standard Discharge Current (A)
0.5C/100A (Constant Current Discharge)
Max. Discharge Current (A)
1C/200A (Constant Current Discharge)
Discharge Condition
@-10oC to 60oC
Battery Management & Communication
Battery Management
Battery Management System with cell balancing and CAN-Interface
Cell Monitoring
Data logging for cell performance, state of health or maintenance
Protection / Durability
Heat Dissipation
Passive Cooling
Cell Balancing
Automatic (Passive)
Safety
Overcharge, over-discharge, over-current and unsafe operating temp.
protection
Heating System (opt.)
Available upon request
Enclosure & Terminals
Enclosure
2.0mm iron sheet, electro-plated and powder coated
IP Code
IP50
Dimensions & Weight
520x420x246mm / 60kg
Charge- and Discharging Terminals
Opened-ended screw terminals
Maintenance & Storage
Maintenance
The battery pack should be charged and discharged fully once every 3-
month.
Storage Condition @ -20oC to 25oC
Can be kept for 3 months at 50% capacity
Storage Condition @ -20oC to 45oC
Can be kept for 1 month at 50% capacity
Warranty & Certificates
Warranty
3 Years
Troubleshooting
Instruction Manual 24V/200Ah LiFePO4 Trailer Battery Packs
Version: Sept 2020 - 4 -Mainland Energy Conversion Ltd.
Tel: +852 2366 9610
E-mail: [email protected]
www.mec-powersolutions.com
Battery Protection Parameters
Description
Value
Action
Single Cell Voltage Upper Limit Alarm
3.65V
Main relay open => Stop charging / discharging
Single Cell Voltage Lower Limit Alarm
2.5V
Single Cell Voltage Difference Alarm
0.5V
Total Voltage Upper Limit Alarm
29.2V
Total Voltage Lower Limit Alarm
20.0V
Charge / Discharge Temperature Upper Limit Alarm
60oC
Charge / Discharge Temperature Lower Limit Alarm
-30oC
Charge / Discharge Current Upper Limit Alarm
405A
Customer Supports
HONG KONG, CHINA
Asia Pacific Sales and Customer Service
Tel: + 852 2366 9610
Email: mec@mec-mainland.com
VILLACH, AUSTRIA
European Sales Arm
General Enquiry
Tel: +43 (0) 4242 55100
Email: office@mec-energietechnik.at
Technical Consultation
Wilfried Steger
Tel: +43 (0) 4242 55100-27
Email: w.steger@mec-energietechnik.at
Subject to technical modifications. We assume no liability for misprints.
