LiTech POWER LPPW48V50AH16S1PF001 PowerWall Energy Storage System Instruction Manual

LPPW48V50AH16S1PF001 PowerWall Energy Storage System
Instruction Manual

General

• Power Wall Energy Storage System – LPPW48V50AH16S1PF001 is a PowerWall type designed 48V Lithium-Ion Phosphate (LiFePo4) rechargeable battery pack with Battery Management System integrated, nominal voltage at 48V, rated capacity at 50Ah, with ModBus/RS485 & CANBus & UART communication protocols.
• Compatible with most major PV inverters, Such as Growatt, SRNE, MUST, Deye, GOODWE, SOFAR, Victron Energy…
• With LiTech advanced technology, when paralleling up multi batteries, the system automatically assigns parallel slaves addresses, unlike others need manually dial the DIP Switch for the address assigning.
• Supports parallel connection up to 15x modules, easy to install on a wall or a rack.

Battery Pack basic characteristics

lifespan, cell is at rated 0.5C charge)
2.8 Max. Continuous Discharge Current| 50A
2.9 Max. Discharge Peak Current| 60A for 5-10 seconds
2.10 Cycle Life| 3000 @ 90% DOD
4500 @ 80% DOD
5000 @ 70% DOD
7000 @ 50% DOD| ≥ 3000 cycles
After 3000 cycles in 90% DOD charge and discharge at rated current with 25±3°C and within 45%-50% humanity enviroment, the residual discharge capacity is above 80% of nominal capacity
2.11 Protections| All protections adopted, please check Specs. of the BMS as below
2.12 Weight| 26kg ± 1kg
2.13 Max. Dimension (exclude handle and terminals)| 400 x 350 x 130 mm (LXWXT)
2.14 Operating Temperature (recommended)| Charge| 0℃ ~ 45℃
Discharge| -20℃ ~ 60℃
2.15 Storage Temperature (recommended)| Within 1 month| -5℃ ~ 35℃
Within 6 months| 0℃ ~ 35℃

BMS Parameters

OCC:60-65A
8| over discharge protection delay time| 40ms -100ms
9| short-circuit protection delay time| 10ms – 20ms
10| static self-consumption current| I < 6.0uA
11| BMS Self-Consumption| working mode≤ 1W | sleep mode≤ 120μA
12| passive balancing| 50mA ± 15mA @ 3.55V ± 0.025V
13| temperature switch with NTC Probe (±3°C)| Charge: 0~45°C | Discharge: -20~75°C
14| communication protocols| CANBus 2.0 and RS485

BMS Topology

• BMS supports online firmware updating.

Battery Pack Functions

5.1 LED Status Definition Description

Status| Normal/Warning/Protection| RUN| ALM| SOC LED| Notes
---|---|---|---|---|---
| | | | |
Power OFF| Sleep| OFF| OFF| OFF| OFF| OFF| OFF| ALL OFF

Standby

| Normal| Flash1| OFF|

According to actual SOC

| Stand by Mode
Warning| Flash1| Flash3| Low Voltage Mode

Charge

| Normal| ON| OFF| According to actual SOC (Max SOC Flash2)| Warnings except Overcharge Warning Flash 3
Warning| ON| Flash3
Charge Over Current Protection| OFF| ON| OFF| OFF| OFF| OFF| Stop Charging
Discharge| Normal| Flash3| OFF| According to actual SOC|
Warning| Flash3| Flash3
Under Voltage Protection| OFF| Flash3| OFF| OFF| OFF| OFF| Stop Discharge
Discharge Over Current, Short Circuit, Reverse Connection| OFF| ON| OFF| OFF| OFF| OFF| Stop Discharge
Temperature| Protection| OFF| ON| OFF| OFF| OFF| OFF| Stop Charging and Discharge
Failure| Cell Failure, Voltage Detector Failure, Current Sensor Failure, NTC Failure, MOSFET Failure| OFF| ON| OFF| OFF| OFF| OFF| Stop Charging and Discharge

• LED Flash Patterns:
  Flash Pattern| ON| OFF
  ---|---|---
  Flash 1| 0.25s| 3.75s
  Flash 2| 0.5s| 0.5s
  Flash 3| 0.5s| 1.5s

5.2 LCD Display

• LCD is 128X64mm designed with blue background, it communicates with BMS via UART protocol,
• Mainly for monitoring and displaying battery parameters,
• Can program OEM customers’ LOGO/Brand or other customized contents

5.3 Reset

• LPPW48V50AH16S1PF001 integrates one non-latching switch for reset,
• Keep pressing the reset switch for 3s and release it, ALM red LED will flash, battery enters sleep mode,
• Press once (1s) the switch, battery will be activated to normal working mode, RUN green LED will flash,
• Keep pressing the rest switch for 7s till all 7 LEDs ON (solid) and release it, battery will be rebooted, all settings back to factory default settings and SOC will be reset too.
• Battery can be wakeup/activated from sleep mode by charging

5.4 Battery Basic Voltage, Current, Temperature protections settings

• LPPW48V50AH16S1PF001 is designed with all the comprehensive protections on voltage, current, temperature.
• System not only monitors and protects the on total voltage but also on each cell.
• System firstly gives alarm when voltage, current, temp. reached the warning threshold, afterward protections will be triggered.
• Alarm before protection can give customers safe buffer time to take any actions if needed.

5.5 Short Circuit Protection

• Trigger conditions: When a short circuit occurs between the discharge outputs P+ and P-, and the short circuit current is greater than 150A, the short circuit protection is triggered, the discharge is turned off, and the system alarms short circuit protection and reports & record’s the fault.
• Release conditions: automatically release after 30S, but more than 3 consecutive short circuits, system will be locked and no automatic recovery, need to charge or reset the battery to release. When releasing the short-circuit protection by pressing the reset button, the short-circuit load must first be disconnected.

5.6 Temperature Protections

• LPPW48V50AH16S1PF001 is integrated with 4 temperature sensors,
• System firstly gives alarm when temp. reaches at the warning point on high or low temp. condition,
• System will cut off the charge and discharge if reaches at the temp. protections threshold,

5.7 Charging Passive Balance

• In the charging state, when the cell voltage is greater than the equalization turn-on voltage, and the voltage difference with the lowest single cell is greater than the equalization turn-on voltage difference, the equalization function is turned on.
  When the voltage difference between the cell voltage and the lowest cell cell is less than the equalization closing voltage difference, the equalization is stopped.

5.8 Active Balance Module (from pack to pack for parallel connections – active energy transfer module)

• With LiTech high-advanced active energy-transfer technology, multi LPPW48V50AH16S1PF001 batteries can be connected in parallel without any risks, no limitations to increase the capacity and current, according to the formulas. 1/R=1/R1+1/R2+1/R3+ … +1/Rn, I=U/R, we can see when more packs are paralleled up, the resistance is becoming less and less, so if the battery packs’ voltages are slightly different from each others, the current in loop can be up to thousands amperes or even higher, if without active energy-transfer module, all cells and electronics are on high risks to be burnt from the high current.
• When LPPW48V50AH16S1PF001 are connected in parallel, the voltage of the system does not change, but the current are additive.
• Taking example of 6 packs in parallel connection below, to understand why we must implement the Active Energy Transfer Module
• We can clearly see the total resistance is getting lower and lower when more batteries are paralled up, the inner loop current will be also getting higher and higher, so without the Energy-Transfer Module, it is very dangerous for all electronics and cells to carry HIGH CURRENT in the loop, DO PAY ATTENTION on the ones without Energy-Transfer Module.
• Please do pay attention when do parallel connections, all cables and connections MUST be able to accommodate the high currents that can be delivered by the battery. Appropriate fuses and circuit breakers are also highly recommended to protect downstream components from current spikes and short circuits.
• Our active-energy-transfer module is implemented on LPPW48V50AH16S1PF001 together with our BMS, the module is triggered only when the voltages are detected differently on paralleled packs, it moves the energy safely from the higher-voltage packs’ to the lower ones to keep all the packs at the same voltage level, safely prevent the electronics/cell burning from high loop current.
• Multi batteries are in parallel connection (communication wiring as below)
• When parallel up batteries, please firstly make sure all batteries are OFF, then connect all batteries’ positive terminals with busbars (contact our support),
• Then connect all batteries’ negative terminals with busbars (contact our support),
• Use ethernet standard cables to wire up the communication protocols.
• Connect battery mainly output wires to the inverter or your application, then turn on the battery,
• If you install the batteries into a wall or a rack, please make the wall or the rack is level and stable.
• LiTech Battery is with advanced technology of aromatic assigning parallel slave address, no need to swith the complicated DIP address unlike the competitors in the market.
• Our DIP Switch is still built there for engineering use.

5.9 Communication

• RJ45 PIN Definition for communication protocols
  RJ45 PINS| Definition| Notes
  ---|---|---
  1| RS485-B|
  2| RS485-A|
  3| NC| not connected
  4| CAN-H|
  5| CAN-L|
  6| GND| optional
  7| RS485-A|
  8| RS485-B|
• The battery is integrated with isolated UART (for LCD internal use), isolated CANBus (for inverter), isolated RS485 (for inverter and our LiTech host-computer API),
• To read and write new premasters or flash new firmware’s on PC, need use RS485 bus to go with LiTech programming tool, please contact our support,
• Please use standard Ethernet network cable.

5.9 Precharge function

• Our BMS has a pre-charging function for special adaptation to high-power inverters. It can start the inverter with an input capacitance of less than 20000uF. The starting resistance is 10 ohms, and the starting time is 800mS.
• The Precharge function is only valid 800mS before the BMS output is turned on, and the Precharge function is turned off after the output is turned on. The inverter must be connected to the inverter when the BMS is turned off, and then wake up and turn on the BMS output before the inverter can be successfully powered on using the Precharge function. Because there are many types of inverters, and the power and capacity are uncertain, this function must be confirmed and verified by the customer several times.

5.10 History storage function

• Our BMS has the function of historical storage. When the BMS appears or clears the alarms, protections and failures and abnormality, the BMS automatically saves the battery parameters at that time. It can store up to 500 pieces of information.
• When the information is full, it will cover the oldest information one by one. Through the host computer, the corresponding historical records can be read and converted into Excel tables to protect the data.

5.11 Interface

• ① Battery Positive Terminal (can be used for parallel connection)
• ② Battery Positive Terminal (can be used for parallel connection)
• ③ Battery Negative Terminal (can be used for parallel connection)
• ④ Battery Negative Terminal (can be used for parallel connection)
• ⑤ ON/OFF Switch
• ⑥ LCD Display
• ⑦ Push Keys for LCD Display
• ⑧ Reset non-Latching Switch| • ⑨ RS485 & CANBus Protocol (can be used for parallel connection)
• ⑩ RS485 & CANBus Protocol (can be used for parallel connection)
• ⑪ DIP Switch for Parallel Connection (slave address assigning)
• ⑫ RUN status LED Indicator
• ⑬ Alarm status LED Indicator
• ⑭ SOC LED Indicators
• ⑮ Casing Handle
• ⑯ E-Switch For ON/OFF Control
---|---

5.12 Products Dimension 2D Drawing

5.13 System Installation

• It is recommended to install on a wall or a rack, please make sure the wall or the rack is level and stable;

• Single unit battery comes with only one cable set (1.5M 6AWG black + red),

• For multi batteries system, the battery to battery connected by adequate gauge wires for lower resistance and better performance, the output wires to the load or inverter will be customized acridly, please contact our support for more details,

• This battery system is typically design for indoor use, Make sure that the installation location meets the following conditions:
  ♦ The area is completely water proof.
  ♦ There are no flammable or explosive materials.
  ♦ The temperature and humidity is maintained at a constant level.
  ♦ The distance from heat source is mo. re than 2 meters
  ♦ Do not cover or wrap the battery case.
  ♦ The floor is flat and level.
  ♦ The ambient temperature is within the range from 0°C to 50°C.
  ♦ There is minimal dust and dirt in the area.
  ♦ The distance from air outlet of inverter is more than 0.5 meters.
  ♦ The installation area shall avoid of direct sunlight.
  ♦ There is no mandatory ventilation requirements for battery system, but please avoid of installation in confined area. The aeration shall avoid of high salinity, humidity or temperature.

• After all is installed and batteries are correctly wired up, please turn on the batteries and your inverter/load, generally, batteries come as in sleep mode,

• During storage and transportation, or after 24 hours without external power supply and load, the battery system will be in sleep mode. After adding the allowable charging voltage, the battery system will be activated and enters a normal operating state, which can be charged, discharged, or entering standby state. It is important to be noted that when the battery system is in sleep, the DC switching power supply used with the battery system must have its anti-reverse protection, so that the voltage of 48V can be used to activate the battery system after the AC is restored.

• After the system is activated, if the external power supply and load are removed, the battery system will automatically enter the standby state. In this state, the power loss is extremely low, and the flashing RUN light on the panel indicates that the battery system is in standby. After 24 hours, the battery system will automatically switch to sleep. In this state, the power loss will be even lower, and the indicator light on the panel is completely off.

Transportation

The rated energy of the accumulator is Hazardous/Dangerous Goods for shipping, therefore you need strictly transport them (by road, by railway, by sea and by air) with special handling procedures, restrictions on shipping procedures are always needed. BUT Violent shaking, bumping, rain and flaring sun shall be forbidden during the transportation. Keep the battery less than 30% charged for shipping, according to IATA shipping regulations.
Transport classification:
UN Class: 9 Class
UN number: UN3480

Storage

Please keep the pack in the cool and dry environment: Within 1 month -5°C~35°C or Within 6 months 0°C~35°C, relative humidity ≤75%, please charge the battery pack regularly (every 30-45 days) to keep its chemistry active and longer lifespan.

Warranty

All LiTech Power products are covered by a one year limited warranty. The warranty covers premature failure due to defects in materials and/or workmanship. Any breakage caused by accidental damage or as a result of abuse or misuse is not covered. The warranty is limited to the original purchaser and is not transferable.
The warranty is void if the warranty sticker or soak-water-sticker is removed from the product or if the battery has been modified in any way. Please charge your battery directly after each use. Leaving your battery in discharged state will seriously and permanently damage its performance. Please note we cannot upheld warranty claims in these circumstances. Your battery will degrade over time and with use, such degradation is not covered by warranty.

Notice

The information in this specification subject to change without prior notice. The information contained in this document is for reference only and should not be used as a basis for product guarantee or warranty. For applications other than those described here, please consult LiTech Power directly.

Caution

• Please read the specification carefully before testing or using the battery, as improper handling of Lithium-ion battery may result in loss of efficiency, heating ignition, electrolyte leakage or even explosion.
• While testing the battery of charging and discharging, please use the testing equipment special for Li-ion battery. Do NOT use the ordinary source of constant current and constant voltage, which fails to restrict charge and discharge to battery in order to prevent the battery from being overcharged and over-discharged, triggering battery malfunction or explosion.
• When charging and discharging to the battery or packing it into the equipment, do NOT reverse the terminals of cathode and anode or it will make the battery overcharging and over-discharging, causing the battery to lose efficiency seriously and even explode.
• Do NOT weld the battery directly, do not disassembly the battery.
• Do NOT put the battery together with metal products such as necklace, hairpin, coin or screw in the pocket or in the bag; neither store them together. Do NOT connect the positive and negative electrode directly with such conductive materials as metal, or it may make the battery short-circuit.
• Do NOT beat, throw or trample the battery. Do NOT put the battery into the washing machine or the high-pressure container.
• Do NOT put the battery close to heat source, for instance, fire, heater etc. Do NOT use the battery under the circumstance of burning sun or the temperature exceeding 60°C, or it may cause the battery to generate heat, heating ignition and loss of efficiency.
• Do NOT get the battery wet or throw the battery into water. When not use, it should be placed in the dry and low temperature environment.
• While using, testing or preserving the battery, if you find the battery become hot, distribute smell , change color, deform or any other abnormality, please stop using or testing immediately, and attempt to isolate and keep away from the battery.
• If the battery leaks, the electrolyte gets into the eyes, do not rub eyes, instead, rinse the eyes with plenty of water, and seek medical service. If the electrolyte gets onto the skin or clothe, wash it with plenty of water immediately.

LiTech Power Co., Ltd
Factory Dongguan: 4F, Bldg B, RuiXin HengYe Industrial Park, TaiXing Rd # 18A, ShiGu District, TangXia Town, DongGuan, China
Factory Shenzhen: 3F, Bldg 3, Fulian Industrial Park, Heping Industrial area, Jianhui Rd, Longhua, ShenZhen, China
Tel: +86 769 8203 3052
Fax: +86 769 82033050
www.LiTechPower.com
E-mail: info@LiTechPower.com

References

• LiTechPower.com | Lithium Technology for All Power Solutions-LiTech Power Co.,Ltd

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