V-TAC 11377-vtac 48100E ESS Series LFP Battery Pack User Manual

V-TAC 11377-vtac 48100E ESS Series LFP Battery Pack

Overview

This user manual provides an introduction to the 48100E ESS series product, including its application description, installation instructions, power-on instructions, maintenance instructions, and technical support information for engineers and users.

Reader

This document is mainly applicable to the following engineers:

• Technical Support Engineer
• Installation Personnel
• Maintenance Engineer

Signs

The following signs may appear in this article, and their meanings are as follows:

Explanation is not safety warning information, and does not involve
personal, equipment and environmental damage information.

Safety Precautions

Before carrying out any battery work, read the safety precautions carefully and learn the correct installation and connection methods of the battery.

Abuse Operation

The battery pack needs to avoid abuse operations under the following (including but not limited to) conditions:

• Reverse connection of positive and negative poles
• External short circuit
• Series connection application

Protection Description

• If the positive and negative poles are connected reversely, the battery will be directly damaged.
• If the battery pack is short-circuited externally, the battery will be directly damaged.
• The battery pack does not support the application of battery packs in series. If the battery packs are forced to be connected in series, the batteries may be directly damaged, and may even cause fire, explosion, and other dangers.

Product Description

The 48100E ESS series products use lithium iron phosphate (LFP) as the positive electrode material. They can be widely used in energy storage systems such as residential energy storage, backup power, and PV self-consumption optimization.
The battery pack is composed of 15 cells/16 cells of LFP batteries in series connection, with low self-discharge, high energy density, and no memory effect. This type of battery also has excellent performance in high rate, long cycle life, wide temperature range, and high safety.

Features

When charging, the battery working temperature can reach 0-60°C (recommended using temperature: +15-35°C). When discharging, the battery working temperature can reach -20-60°C (recommended using temperature: +15-35°C).

Product Usage Instructions

Before using the 48100E ESS Series LFP Battery Pack, please read the safety precautions carefully to ensure proper installation and connection methods.
When using the battery pack, please avoid the following abuse operations:

• Reverse connection of positive and negative poles
• External short circuit
• Series connection application

If any of the above abuse operations occur, the battery may be directly damaged and may even cause fire, explosion, and other dangers.
The 48100E ESS series products are suitable for use in energy storage systems such as residential energy storage, backup power, and PV self-consumption optimization. When charging, the battery working temperature can reach 0-60°C (recommended using temperature: +15-35°C). When discharging, the battery working temperature can reach -20-60°C (recommended using temperature: +15-35°C).
Please note that the battery pack does not support the application of battery packs in series. Attempting to connect battery packs in series may directly damage the batteries and may cause fire, explosion, and other dangers.
For any technical support or maintenance issues, please refer to the user manual or contact a technical support engineer or maintenance engineer.

Notice

The products, services or features you purchase shall be bound by the commercial contract and terms. All or part of the products, services or features described in this document may not be in your purchase or within the scope of use. Unless otherwise agreed in the contract, we makes no express or implied statement or guarantee for the content of this document.
Due to product version upgrades or other reasons, the content of this document will be updated from time to time. Unless otherwise agreed, this document is only used as a guide, and all statements, information, and suggestions in this document do not constitute any express or implied warranty.

Foreword

Overview
This user manual mainly introduces the 48100E ESS series product introduction, application description, installation instructions, power-on instructions, maintenance instructions and provides instructions for technical support engineers, maintenance engineers and users.

Reader

This document is mainly applicable to the following engineers

• Technical Support Engineer
• Installation Personnel
• Maintenance Engineer

Signs

The following signs may appear in this article, and their meanings are as follows.

Danger

| Indicates a hazard with a high level of risk that will cause death or serious injury if not avoided
WARNING|

Warning

| Indicates a hazard with a moderate risk that may cause death or serious injury if not avoided
ATTENTION|

Notice

| Indicates a hazard with a low level of risk that may cause minor or moderate harm if not avoided

NOTE

|

Explanation

| Supplementary explanation of key information in the main text.”Explanation” is not safety warning information, and does not involve personal, equipment and

environmental damage information.

Safety

Safety Precautions

• Before carrying out battery work, you must read carefully the safety precautions and master the correct installation and connection methods of the battery.
  • Prohibit to turn it upside down, tilt, or collide.
  • Prohibit to short-circuit the positive and negative poles of the battery, otherwise it will cause the battery to be damaged.
  • Prohibit to throw the battery pack into a fire source.
  • Prohibit to modify the battery, and it is strictly prohibited to immerse the battery in water or other liquids.
  • DO NOT place installation tools on the battery during battery installation. DO NOT disassemble, squeeze, bend, deform, puncture, or shred the battery without the authorization of authorized dealers.
  • DO NOT exceed the temperature range, otherwise it will affect the battery performance and safety.
  • The battery circuit must be kept disconnecting status during installation and maintenance operations.
  • Check the battery connection end bolts regularly to confirm that the bolts are tight.

Abuse Operation

The battery pack needs to avoid abuse operations under the following (includ- ing but not limited to) conditions:

negative poles are connected reversely, the battery will be directly damaged.
External short circuit| If the battery pack is short circuited externally, the battery will be directly damaged.

Series connection application

| The battery pack does not support the application of battery packs in series. If the battery packs are forcedto be connected in series, the batteries may be directly damaged, and may even cause fire, explosion and other dangers.

Overview

Product Description

The 48100E ESS series products use lithium iron phosphate (LFP) as the positive electrode material. It can be widely used in energy storage systems such as residen-tial energy storage, back-up power, and PV self-consumption optimization.
The battery pack is composed of 15 cells/16 cells of LFP batteries in series connection, with low self-discharge, high energy density, and no memory effect. This type of battery also has excellent performanc e in high rate, long cycle life, wide temperature range, and high safety.

Features

• High energy density
  Higher volume ratio energy and weight ratio energy.

• Maintenance-free
  The battery pack is maintenance-free in the process of using, which can save customers’ battery operation, maintenance testing costs and reduce the frequency of on-site replacement.

• Long cycle life
  The battery pack life is 3 times long than the ordinary lead-acid batteries.

• Excellent temperature characteristics When charging, the battery working temperature can reach 0℃～＋60℃(recommended using temperature: +15～＋35℃). When discharging, the battery working temperature can reach -20℃～＋60℃(recommended using temperature: +15～＋35℃).

Basic Functions

• Monitor
  The battery system uses a high-performance BMS, it has protection functions such as current, voltage.

• Alarm
  Support abnormal alarms such as overvoltage, under-voltage, overcurrent, short circuit, high and low temperature, battery failure, hardware failure, etc.

• Communication
  Provide dual RS485 interfaces, upload alarming and status data through the RS485/CAN communication protocol.

• Parallel connection application
  Support multiple battery packs in parallel, RS485/CAN communication supports up to 6 groups without control unit（or max supports 15 groups with control unit）.

• Balance function
  Support the cells balance function.

• Extended function
  Extended SNMP V2, SNMP V3, LCD, anti-theft and the mixed use of lithium battery and lead-acid battery

Application Scenario

The battery pack is used to provide backup power, load shifting, peaking shaving and can be used for residential energy storage, solar energy storage and other application scenarios.
The normal working operation diagram of the battery pack can be as shown in the figure below

Application Description

Parallel Connection Application

• The battery packs support parallel connection, and synchronously increases the backup time or backup power.
• Confirm the consistency between the battery packs, check the SOC and voltage and turn off the batteries before connecting them in parallel.
• Multiple battery packs of parallel connection need to use RS485/CAN to communicate, pay attention to the DIP switch settings

Low-temperature Application

Parallel Connection Application

• Low-temperature Charging
  The battery pack does not support direct charging of the battery below 0°C.
  When the minimum temperature of the battery is below 0°C, the BMS will cut-off the charging circuit and cannot be charged.

• Low-temperature Discharging
  The battery pack does not support discharge below -20°C. When the minimum temperature of battery is below -20°C, the BMS will cut-off the discharge circuit and cannot discharge.

Low battery-capacity Storage (SOC≤5%)

• After the battery pack is power off, there will be BMS static power consumption and self-discharge loss. In actual scenarios, it is necessary to avoid low-battery-power state（SOC≤5%）storage. If it is unavoidable, the longest storage period is 30 days@25°C, 15 days@45°C. The battery needs to be recharged in time after storage, otherwise the battery may be damaged due to over-discharge, and the entire battery pack needs to be replaced.
• The following conditions may cause the battery pack to be stored in a discharged state:
• After the utility power failure, the line/fault cannot be eliminated in time, and the power supply cannot be restored for a long time.
• After the installation and commissioning work is completed, the utility power is turned off directly, but the battery pack is not powered off, which will cause the battery to enter the low power consumption mode.
• Other reasons cause the battery pack to fail to enter low power consumption normally.

Application of Nearing the Ocean

• The atmospheric corrosion environment is defined and classified according to the natural environment state, and the A/B environment is defined as follows:
• A: environment refers to the ocean or the land near the pollution source, or the environment with simple shelter (such as awning). “Near the ocean” refers to the area 0.5～3.7km away from the ocean; “Near the pollution source” refers to the area within the following radius: 3.7km from the saltwater lake, 3km from heavy pollution sources such as smelters, coal mines, and thermal power plants, chemical industry, rubber, electroplating, etc. 2km from medium pollution sources such as chemical industry, rubber and electroplating, etc. And 1km from light pollution sources such as food, leather and heating boilers, etc.
• B: environment. Refers to the environment on land or outside with simple shelter (such as awning) within 500m from the coast, or the environment on the sea.

NOTE

The battery pack can be used under other environmental conditions and cannot be used alone under A/B environment. If it is to be used in the A/B environment, it needs to be equipped with a high-protection air-conditioning cabinet, which is recommended to be IP55 or higher.

Product Introduction

Module Specification Parameter Introduction

Dimension are defined as follows:

Model

|

Cell Qty

| Nominal Voltage(V)| Nominal Capacity

(Ah)

| Reference Weight(kg)| Dimension(mm)| Charge Current(A)
---|---|---|---|---|---|---
W| D| H| Recommend| Max
48100E| 15| 48| 100| 42| 445| 450| 132.5| 20| 100
16| 51.2| 100| 45| 445| 450| 132.5| 20| 100

NOTE

• The battery packs show in the table are standard modules. Other non-standard products of us are not shown in this document.
• With process improvements and product upgrades, the product characteristics and parameters described are subject to change without notice.
• Terminal Torque: 7 N•m.
• For the above parameters of specific products, please refer to the corresponding product datasheet.
• The width size doesn’t contain hangers and the depth size doesn’t contain handles.

Product Introduction

Panel Introduction

Panel Function

NOTE

48100E ESS series panel functions take 48100E as an example.

The interface definition as below table

5

|

RJ-11

| RJ-11 interface for firmware update|

Used for debugging

6~7

|

RJ-45

|

2*RJ-45 interface for RS485/CAN communication

|

Details shows in table 5-7

8| RESET| Reset switch| –

9

|

Dry Contact

|

NC. / NO. dry contact

| Default NC. dry contact;

Dry contact definition shows in tableB5-8

10| Switch| Power switch| –
11| Battery Output| Power terminal| –
12| GND| Module ground connection| –
13| LCD （ Optional ）| LCD display screen| –

Product Introduction

NOTE
The position of terminal block of the above-mentioned panel interfaces is different for different 48100E ESS series products. Please refer to the corresponding product datasheet

Indicator Description

• There are 6 Indicators on the operation panel, divided into three categories: 4 green SOC Indicators, 1 red alarm Indicator and 1 green run indicator.
  Flash Mode| ON| OFF| Common Name
  ---|---|---|---
  Flash 1| 0.25 s| 3.75 s| /
  Flash 2| 0.5 s| 0.5 s| Slow Flash
  Flash 3| 0.5 s| 1.5 s| /
  Flash 4| 0.25 s| 0.25 s| Strobe
• The power indicator is used to identify the current capacity status of the battery. The number of flashing indicators corresponds to different remaining capacity. The specific meaning is shown in the following table.
  Number of Indicator| Remaining Capacity Range
  ---|---
  1 indicator on| 0%＜SOC≤25%
  2 indicators on| 25%＜SOC≤50%
  3 indicators on| 50%＜SOC≤75%
  4 indicators on| 75%＜SOC≤100%
• The corresponding relationship between battery operation status and indicator operation status is shown in the following table.
  Battery status| Normal/ Abnormal| RUN| ALM| SOC Indicators| Description
  ---|---|---|---|---|---
  –| –| Green| Red| Green| Green| Green| Green| –
  Power off/ Sleep|

–

|

OFF

|

OFF

|

OFF

|

OFF

|

OFF

|

OFF

|

–

Standby

|

Normal

|

Flash 1

|

OFF

|

According to SOC

| Flash mode shown in Table 2

Charge

|

Normal

|

Flash 2

|

OFF

|

According to SOC

|

–

Discharge| Normal| ON| OFF| According to SOC| –

Alarm

|

Abnormal

| According to the state of charge and discharge|

Flash 2

|

According to SOC

|

Recoverable

Error| Abnormal| OFF| ON| OFF| –

DIP Address

To communicate with the battery, you need to assign an address to the battery BMS through the DIP switch.
The relationship between DIP address and BMS address as below：

Communication Port Definition3

RJ 45 definition as below：

| 1/2/3| NC
4| RS485_A
5| CAN _L
6| CAN_H
7| RS485_B
8| GND

NOTE
The above is the definition of conventional communication，if you have special needs，please contact the authorized dealer.

Dry Contact Alarm Definition
The module uses the default NC. dry contact to provide alarm signals. The alarm definition of the dry contact is defined as follows.

Dry Contact 1

| Single cell voltage is lower than 1V;

Voltage difference between cells is more than 800mV.

Dry Contact 2

| 940 fault;

NTC disconnection; Charging and discharging MOS fault.

Installation

Use insulated tools to avoid electric shock. If you use tools without insulation protection, you need to wrap the exposed metal parts with insulation tape for insulation treatment.
The following table describes the tools and meters that may be used before installation.

Unpacking and Inspection

• Study this manual carefully before any installation of the batteries.
• The batteries must only be installed and operated by trained personnel.
• Check the quantity of battery and accessories with delivery list.
• Check the appearance whether there is damaged or leakage, if any damage is detected, please do not proceed to the next installation.

Preparing for Installation

• Make sure to disconnect and isolate the battery from any electrical source, and then turn on the MCB (switch). Verify that the red ALM LED does not stay on for more than 30 seconds.
• Turn off the switch and continue with the installation.

Installation

1. Make sure the battery is in off status.
2. Put the battery into cabinet or rack.
3. Use 4 M6 bolts to fix the battery pack on the cabinet.
4. Take out the grounding wires and connect one end to the ground point of the battery pack and other end to the ground point of the cabinet.

ATTENTION

• The battery pack should be installed by professionally trained personnel， and it is strictly forbidden to install it without permission.
• Use insulated tools to avoid electric shock. If you use tools without insulation protection, you need to wrap the exposed metal parts with insulation tape for insulation treatment.
• The battery pack is heavy， and at least 4 manpower must be prepared during the transportation and installation process. If possible， please use tools to assist in handling.

Cable Connection

Use the negative power cable to connect the negative bus bar with the battery negative (‘-’) terminal, and use the positive power cable to connect the positive bus bar with the battery positive (‘+’) terminal.

• A. The last power cable connected to the charger or inverter needs to be configured according to the actual current that may exceed 100A.
• B. If the battery total input/output current more than 100A in parallel, the wiring method should configure bus-bars to connect the power cables.

Communication Cable Connection

• A. Use the communication cable to connect the battery packs in series through the RS485/CAN communication port, and connect the battery packs at the end to the user’s RS485/CAN communication port.
• B. Assign addresses to battery packs by dialing the dialing keys of the dialing switch. Please refer to the corresponding relationship between the DIP switch and the battery pack address.

ATTENTION

• Wear safety protection equipment to prevent electric shock from causing electric shock injuries.
  • Use insulated tools to avoid electric shock.
  • Communication cables and power cables must be laid separately.
  • Before connecting cables, make sure that the bus-bars at the user end are in disconnected state.
• Pay attention to the polarity of the battery pack.

NOTE

• Please assign the battery pack with CAN communication protocol directly connected to the user’s CAN port to 0, or with RS485 communication protocol directly connected to the user’s RS485 port to 1. The addresses of the remaining battery packs increase sequentially.
• The battery communication cable pins refer to “Table 5-7 RJ 45 Definition”.

Power-on Operation

1. Power on the charger at the user terminal.
2. Set the lithium battery MCB/Switch to ON (if available).
3. Observe Run/Alarm indicator and judge the battery operating status. If the RUN indicator of the battery is on and the ALARM indicator is off, indicating that the battery is working normally. Otherwise indicating the battery is not work, you need to reconfirm whether the cable is connected well.

Power System Parameter Setting

No.

|

Parameters

|

Units

| Standard Value
---|---|---|---
15S| 16S
1| Rated voltage| V| 48.0| 51.2
2| Float charge voltage| V| 54.0| 56.4
3| Standard charge current| A| 0.2C| 0.2C
4| Charge current limitation| A| 0.5C| 0.5C
5| Max charge/discharge current| A| 1C| 1C
6| Condition to float charge| A| 0.05C| 0.05C
7| Charging operation temp| ℃| 0~60℃| 0~60℃
8| Discharging operation temp| ℃| -20~60℃| -20~60℃
9| RH| /| 10~95%| 10~95%

NOTE

• The content in the table is just our suggestion, and actually need to refer to the customer’s design requirements.
• The setting items of different chargers will be different.
• Follow strictly the power-on procedure to power on the battery pack, otherwise, it will cause damage to the device or human body.
• Make sure the charger is powered on before turning on the Battery MCB/Switch.
• Must not change the parameters optionally in the site.
• Batteries will continue charge/discharge until BMS protection if there is a communication failure or Lead-acid mode between the battery and charger / Inverter.
• After the 48100E ESS series batteries go into the sleeping status, please turn on the Battery MCB/Switch against or press the reset button.

Shipment & Maintenance & Storage

Shipment

It is suitable for the transportation of vehicles, ships, and airplanes. During transportation, shading, sun protection, and civilized loading and unloading should be performed. The box containing the product is allowed to be transported by any means of transportation. In the process of loading and unloading, the battery should be handled with care to prevent falling, rolling, and heavy pressure. Avoid direct rain and snow and mechanical impact during transportation.
And here is the suggestion for the initial SOC before shipment by different transportation:

• Airplane:30%
• Sea:50%
• Vehicle:50%

NOTE
Whether the loading SOC status of the battery is allowed, you need to consult the relevant government transportation department.

Maintenance

Battery Maintenance Considerations
When maintaining the battery, it is required to use insulated tools or wrap the tools in insulation.

• DO NOT place any debris on the top of the battery.
• DO NOT use any organic solvents to clean the battery.
• DO NOT smoke or use naked flames near the battery.
• After the battery is discharged, the battery should be charged in time to avoid affecting the battery life.
• When not using the battery for a long time, please charge the battery to a 40%~50% charged state. Long-term storage with low battery may damage the battery.
• All maintenance work must be carried out by professionals.

Routine Maintenance
The staff should perform a visual inspection on the 48100E ESS series battery according to the inspection plan, please refer to the following table for maintenance.
Table 8-1 Routine Maintenance（Every three-month）

clea n the appearance of the battery pack with a cotton cloth.

The battery pack terminal is damaged,

replace the cable.

If the appearance is damaged, leaking or deformed, take a photo and replace the defective battery pack

Please contact Vestwoods in time for other abnormal situations.

 | The terminals are in

good condition.

Battery Appearance

| The battery pack shell is intact, and there is no bumps, breaks, or leakage.
 | The appearance of the battery pack does not leak.
 | No deformation or swelling of the shell
Alarm| No Alarm.| Find the solution as per alarm information.

NOTE

Suggested routine maintenance for every three-month.

（Suggested） Complete Cycle

|

Have a complete charge & discharge cycleunder the equipment no

lack of power.

| Check whether happens alarm action, and please check with the alarm list.

Please contact with Vestwoods if the alarm still exists.

Cables

| There is no aging of the connecting wire and no cracking of the insulation layer.

The bolts at the cable connection are not loose.

|

Replace the faulty connection. Fastening bolts.

Battery Storage

• The recommended storage temperature is 15℃~35℃.
• Battery performance degradation after long-term storage, please shorten shelf time as possible as you can.
• Recharge charge before using to recover capacity loss of self-discharge during storage and transport.
• Storage battery should be at 40%-50% SOC when the battery is not used for a long time.
• Storage battery over 40°C or under 0°C will reduce battery life. Storage battery in a dry and low-temperature, well-ventilated place.

If the battery is not used for a long time, the battery must be charged at regular intervals. The charging requirements are as follows：

SOC

3.Charge by 0.2C to 40%~50% SOC

0℃~20℃ or 30℃~40℃

|

Each 3 months

Trouble Shooting

Please refer to the table below to deal with common faults：

The indicator

does not flash

| The power cable of the battery pack is not

properly connected.

|

Reconnect the power cable of the battery pack

The power switch is off.| Turn on the power switch.
The BMS is in a sleep state.| Charge the battery pack
BMS is damaged.| Replace BMS.

Unable to discharge

| The terminal of the battery pack is

damaged.

|

Replace the battery pack wiring terminals.

BMS communication failure.

| Reconnect the communication line between the BMS and the battery pack. If the communication cable is

damaged, replace the communication cable.

The power switch is off.| Turn on the power switch.

Unable to charge

| The charger is malfunctioning.| Replace the charger.
The terminal of the battery pack is

damaged.

|

Replace the battery pack wiring terminals.

BMS communication failure.

| Reconnect the communication line between the BMS and the battery pack. If the communication cable is

damaged, replace the communication cable.

The power switch is off.| Turn on the power switch.

Communication fail

| The power switch is off.| Turn on the power switch.
The BMS is in a sleep status.| Charge the battery pack
The communication cable is damage.| Replace the network cable.
Inaccurate voltage display| The voltage sampling line is damaged.| Replace the voltage sampling cable.
BMS is damaged.| Replace BMS.

Low capacity

| The battery pack has not been maintained

for a long time.

|

Use an equalizer to maintain the battery pack.

The single battery is damaged.| Replace the damaged single battery.

Inaccurate voltage sampling.

|

Replace the electrical sampling line or replace the BMS.

Low cell voltage

| The battery pack has not been maintained

for a long time.

|

Use an equalizer to maintain the battery pack

The single battery is damaged.|

Replace the damaged single battery.

Replace the electrical sampling line or replace the BMS.

Inaccurate voltage sampling.

Warranty

Except for the following and the conditions specified in the contract, you can go to the authorized dealers for reasonable warranty and maintenance.

1. Failure of equipment caused by unauthorized disassembly and maintenance operations without the authorization of authorized dealers is not within the scope of the warranty.
2. Equipment damage caused by negligence during storage and transportation is not covered by the warranty.
3. The damage to the equipment caused by continuous overload work outside the electrical parameters of the equipment is not covered by the warranty.
4. Unauthorized testing of the equipment without the authorization of authorized dealers will not be covered by the warranty.
5. Non-equipment problems, adverse consequences caused by operation and matching problems are not covered by the warranty.
6. Equipment damage caused by natural forces, force majeure, and uncontrollable factors, such as earthquakes, typhoons, tornadoes, volcanic eruptions, floods, lightning, heavy snow, and wars, is not covered by the warranty.
7. If the product serial number is changed, blurred, or torn, it is not covered by the warranty.

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