DYNESS BX51100 5.12kWh Lithium Batteries

Statement of Law

Copyright of this document belongs to Daqin New Energy Tech (Taizhou) Co., Ltd. No part of this documentation maybe excerpted, reproduced, translated, annotated or duplicated in any form or by any means without the prior written permission of Daqin New Energy Tech (Taizhou) Co., Ltd. All Rights Reserved. This product complies with the design requirements of environmental protection and personal safety. The storage, use and disposal of the products shall be carried out in accordance with the product manual, relevant contract or relevant laws and regulations. Customer can check the related information on the website of Daqin New Energy Tech (Taizhou) Co., Ltd when the product or technology is updated. Web URLhttp://www.dyness-tech.com.cn Please note that the product can be modified without prior notice. Revision History

1.1

|

2021.09.06

| 1.      Power cable overcurrent capacity is changed to 120A

2.      Update the Max.charge voltage to 56.5V

3.      Update the Max,discharge current to 75A

4.      Update DIP switch description.

5.      Update charge current limit value to 1A in protection mode.

6.      Update some recommended parameters in page 20

7.      Update some voltage value in table 4-2,page 22.

Safety Precautions

Warning

• Please do not put the battery into water or fire, in case of explosion or any other situation that might endanger your life.
• Please connect wires properly while installation, do not reverse connect.
• To avoid short circuit, please do not connect positive and negative poles with conductor on the same device.
• Please avoid any form of damage to battery, especially stab, hit, trample or strike.
• Please shut off the power completely when removing the device or reconnecting wires during the daily use or it could cause the danger of electric shock.
• Please use dry powder extinguisher to put out the flame when encountering a fire hazard, liquid extinguisher could result in the risk of explosion.
• For your safety, please do not arbitrarily dismantle any component in any circumstances. The maintenance must be implemented by authorized technical personnel or our company’s technical support. Device breakdown due to unauthorized operation will not be covered under warranty.

Caution

• Our products have been strictly inspected before shipment. Please contact us if you find any abnormal phenomena such as device outer case bulging.
• The product shall be grounded properly before use in order to ensure your safety.
• To assure the proper use please make sure parameters among the relevant device are compatible and matched.
• Please do not mixed-use batteries from different manufacturers, different types and models, as well as old and new together.
• Ambient and storage method could impact the product life span, please comply with the operation environment instruction to ensure device works in proper condition.
• For long-term storage, the battery should be recharged once every 6 months, and the amount of electric charge shall exceed 80% of the rated capacity.
• Please charge the battery in 18 hours after it fully discharged or over-discharging protection mode is activated.
• Formula of theoretical standby time: T=C/I (T is standby time, C is battery capacity, I is total current of all loads).

Preface

Manual declaration
BX51100 lithium iron phosphate battery energy storage system can provide energy storage for photovoltaic power generation users through parallel combination. Our product can store extra electricity into battery from photovoltaic power generation system in daytime and supply stable power to user’s equipment as power backup at nighttime or any time when needed. It can improve the efficiency of photovoltaic power generation and increase the electric power efficiency by peak load shifting. This user manual details the basic structure, parameters, basic procedures and methods of installation and operation and maintenance of the equipment.

Introduction

Brief Introduction
BX51100 lithium iron phosphate battery system is a standard battery system unit, customers can choose a certain number of BX51100 according to their needs, by connecting parallel to form a larger capacity battery pack, to meet the user’s long-term power supply needs. The product is especially suitable for energy storage applications with high operating temperatures, limited installation space, long power backup time and long service life.

Product Properties
BX51100 energy storage product’s positive electrode materials are lithium iron phosphate, battery cells are managed effectively by BMS with better performance, the system’s features as below:

• Comply with European ROHS, Certified SGS, employ non-toxic, non-pollution environment-friendly battery.
• Anode materials are lithium iron phosphate (LiFePO4), safer with longer life span.
• Carries battery management system with better performance, possesses protection function like over-discharge, over-charge, over-current, abnormal temperature.
• Self-management on charging and discharging, Single core balancing function.
• Intelligent design configures integrated inspection module.
• Flexible configurations allow parallel of multi battery for longer standby time.
• Self-ventilation with lower system noise.
• Less battery self-discharge, then recharging period can be up to 10 months during the storage.
• No memory effect so that battery can be charged and discharged shallowly.
• With wide range of temperature for working environment, -20℃ ~ +55℃, circulation span and discharging performance are well under high temperature.
• Less volume, lighter weight.

Product identity definition

Product Specification

Size and Weight
Table 2-1 BX51100 Device size

Product| Nominal Voltage| Nominal Capacity| Dimension| Weight
---|---|---|---|---
BX51100| DC51.2V| 100Ah| 558×545×150mm| ≈50kg

Performance Parameter
Table 2-2 BX51100 performance parameter

Interface Definition
This section elaborates the interface functions of the front interface of the device.

must be in the “ON” state when in use

2| Positive socket| Battery output positive or parallel positive line
3| ADD| DIP switch

4

| SW (battery wake/sleep

switch)

| When the “OFF/ON” switch button is in the ON state, press and hold this button for 3 seconds to put the battery into the

power-on or off state.

5| SOC| The number of green lights shows the remaining power. Table

2-3 for details.

6

|

ALM

| Red light flashing when an alarm occurs, red light always on during protection status. After the condition of trigger

protection is relieved, it can be automatically closed.

7| RUN| Green light flashing during standby and charging mode.

Green light always on when discharging.

8| COM| Communication cascade port, support RS232
9| CAN/485| Communication cascade port, support CAN/ RS485 communication (factory default CAN communication)
10| DRY CONTACT| /
11| Negative socket| Battery output negative or parallel negative line
12| Grounding| Shell ground connection

DIP switch definition and description

DIP switch position (master communication protocol and baud rate selection)

1| #2| #3| #4

Define different protocols； Distinguish between master and slave

| Baud rate selection
OFF：CAN: 500K,485: 9600
ON：CAN: 250K,485: 115200

DIP switch description:
When the batteries are connected in parallel, the host communicates with the slaves through the CAN interface. The host summarizes the information of the entire battery system and communicates with the inverter through CAN or 485.

If the master is the latest BX51100 battery with DIP switch:

1. The communication cable from the master CAN IN to the inverter comm port should be the correct one.
2. When the battery works with GOODWE、Solis、LUX、Sofar、DEYE、VICTRON IMEON、Sungrow、SMA、RENAC、DELIOS、SAJ(CAN Comm) ,before starting the battery,you need put the master DIP switch “# 3” to the “ON” position (to the top), then turn on the batteries.
3. if the battery communicates with the Axpert-king/VMIII/MAX,Infinisolar,Growatt SPH/SPA(CAN comm)、GMDE, turn the master DIP switch “#2” to “ON” position.
4. If the battery communicates with the Growatt SPF HVM-P/ES/WPV by RS485 communication, turn the master DIP switch “#2” and “#3” to “ON”.
5. If the battery communicates with the Schneider Conext Series, turn the master DIP switch “#1” and “#3” to “ON
6. When you setup the master DIP as setting 1~4,all the slaves keep the DIP 0000,no need change.
7. If the energy storage system has only one BX51100, it is the master itself, and still follow the above steps.

Note: For more information of matching inverter brands, please subject to the latest document

Table 2-5 Pin Definition

Tips: Please pay attention of the communication com definition of inverter, in order to avoid voltage in the port to affect communication.

Battery

Status

| SOC| LED1| LED2| LED3| LED4| LED5| ALM| RUN
---|---|---|---|---|---|---|---|---
Shutdown| /| off| off| off| off| off| off| off

Standby

| 80%＜SOC≤100%| ●| ●| ●| ●| ●| off| Flashing
60%＜SOC≤80%| ●| ●| ●| ●| off| off| Flashing
40%＜SOC≤60%| ●| ●| ●| off| off| off| Flashing
20%＜SOC≤40%| ●| ●| off| off| off| off| Flashing
0%＜SOC≤20%| ●| off| off| off| off| Flashing| Flashing
SOC=0| off| off| off| off| off| Flashing

/●

| Flashing

Charging

| SOC=100%| ●| ●| ●| ●| ●| off| Flashing
80%＜SOC＜100%| ●| ●| ●| ●| Flashing| off| Flashing
60%＜SOC≤80%| ●| ●| ●| Flashing| off| off| Flashing
40%＜SOC≤60%| ●| ●| Flashing| off| off| off| Flashing
20%＜SOC≤40%| ●| Flashing| off| off| off| off| Flashing
0%≤SOC≤20%| Flashing| off| off| off| off| off| Flashing

Discharging

| 80%＜SOC≤100%| ●| ●| ●| ●| ●| off| ●
60%＜SOC≤80%| ●| ●| ●| ●| off| off| ●
40%＜SOC≤60%| ●| ●| ●| off| off| off| ●
20%＜SOC≤40%| ●| ●| off| off| off| off| ●
0%＜SOC≤20%| ●| off| off| off| off| Flashing| ●
SOC=0| off| off| off| off| off| Flashing

/●

| Flashing/●

A special ALM light flashing state: when the communication between batteries is lost or abnormal,all the lights from SOC to RUN of the master battery will flash together.

Battery Management System(BMS)

Low Voltage Protection in Discharging
When any battery cell voltage or total voltage is lower than the rated protection value during discharging, the over-discharging protection is activated, and the battery buzzer makes an alarm sound. Then battery system stops supplying power to the outside. When the voltage of each cell back to rated return range, the protection is over.

Over Voltage Protection in Charging
Battery will stops charging when total voltage or any battery cell voltage reaches the rated protection value during charging stage. When total voltage or all cell back to rated range, the protection is over.

Over Current Protection
When the charge current ＞90A, current limit protection mode is activated, current will be limited to 1A，protection is removed after rated time delaying 10S. Circulate like this until the current is lower than 90A.

Over Current Protection in Discharging
When the discharge current is higher than 100A, the battery buzzer alarms and the system stops discharging after 15s. After protection, the discharging will restore in 60s delay or immediately when there is charging current.

Caution:
The buzzer sound alarm setting can be manually turned off on the background software, and the factory default is on

Low/Over temperature protection in charging
When battery’s temperature is beyond range of -5 ℃ ~+55 ℃ during charging, temperature protection is activated, device stops charging. The protection is over when temperature back to rated working range.

Low/Over temperature protection in discharging
When battery’s temperature is beyond range of -20℃~+55℃ during discharging, temperature protection is activated, device stops supplying power to the outside. The protection is over when temperature back to rated working range.

Other Protection

Short Circuit Protection
When the battery is activated from the shutdown state, if a short circuit occurs, the system starts short-circuit protection for 60 seconds.

Self-Shutdown：
When device connects no external loads and power supply and no external communication for over 72 hours, device will dormant standby automatically

Caution
Battery’s maximum discharging current should be more than load’s maximum working current.

Installation and Configuration

Safety Requirement
This system can only be installed by personnel who have been trained in the power supply system and have sufficient knowledge of the power system. The safety regulations and local safety regulations listed below should always be followed during the installation.

• All circuits connected to this power system with an external voltage of less than 51.2V must meet the SELV requirements defined in the IEC60950 standard.
• If operating within the power system cabinet, make sure the power system is not charged. Battery devices should also be switched off.
• Distribution cable wiring should be reasonable and has the protective measures to avoid touching these cables while operating power equipment.
• when installing the battery system, must wear the protective items below:

Environmental requirements

• Working temperature: -20℃ ~ +55℃
• Charging temperature range is 0℃~+55℃,
• Discharging temperature range is -20℃ ~+55℃
• Storage temperature: -10℃~ +35℃
• Relative humidity: 5% ~ 85%RH
• Elevation: no more than 4000m
• Operating environment: Indoor installation, sites avoid the sun and no wind, no conductive dust and corrosive gas. And the following conditions are met:
  • Installation location should be away from the sea to avoid brine and high humidity environment.
  • The ground for product arrangement shall be flat and level.
  • No flammable explosive materials near the installation site.
  • The optimal ambient temperature is 15℃~ 30 ℃
  • Keep away from dust and messy zones

Tools and data

Tools and meters that may be used are shown in table 3-1. Table 3-1 Tool instrument

Name

Screwdriver（Slotted、Phillips）| Multimeter
Torque wrench| Clamp current meter
Diagonal pliers| Insulation tape
Pointed nose pliers| Temperature meter
Pliers to hold the wire| Anti-static bracelet
Stripping pliers| Cable tie
Electric drill| Tape measure

Technical preparation

Devices that can be connected directly to the battery can be user equipment, power supplies, or other power supplies.

• Confirm whether the user’s PV power generation equipment, power supply or other power supply equipment has a DC output interface, and measure whether the DC power output voltage meets the voltage range requirements in Table 2-2.

• Confirm that the maximum discharge current capability of the DC power interface of the user’s photovoltaic power generation equipment, power supply or other power supply equipment should be higher than the maximum charging current of the products used in Table 2-2.
  If the maximum discharge capacity of the DC power interface of the user’s photovoltaic power generation equipment is less than the maximum charging current of the products used in Table 2-2, the DC power interface of the user’s photovoltaic power generation equipment shall have a current limiting function to ensure the normal operation of the user’s equipment.

• Verify that the maximum operating current of the battery-powered user equipment (inverter DC input) should be less than the maximum discharge current of the products used in Table 2-2.

The security check

• Firefighting equipment should be provided near the product, such as portable dry powder fire extinguisher.
• Automatic fire fighting system shall be provided for the case where necessary.
• No flammable, explosive and other dangerous materials are placed beside the battery.

Unpacking inspection

• When the equipment arrives at the installation site, loading and unloading should be carried out according to the rules and regulations, to prevent from being exposed to sun and rain.
• Before unpacking, the total number of packages shall be indicated according to the shipping list attached to each package, and the case shall be checked for good condition.
• In the process of unpacking, handle with care and protect the surface coating of the object.
• Open the package, the installation personnel should read the technical documents, verify the list, according to the configuration table and packing list, ensure objects are complete and intact, if the internal packing is damaged, should be examined and recorded in detail.

Packing list is as follows

Engineering coordination
Attention should be paid to the following items before construction:

• Power line specification. The power line specification shall meet the requirements of maximum discharge current for each product.
• Mounting space and bearing capacity. Make sure that the battery has enough room to install, and that the brackets have enough load capacity.
• Wiring. Make sure the power line and ground wire are reasonable. Not easy to short-circuit, water and corrosion.

Equipment installation

Table 3-2 Installation steps

Step1

| Installation preparation| Confirm that the ON/OFF switch on the front panel of BX51100 unit is in the “OFF” state to ensure no live

operation.

---|---|---

Step 2

| Mechanical installation| 1. Battery placement position determination
2. Battery module installation

Step3

|

Electrical installation

| 1. Ground cable installation
2. Battery module parallel cable installation
3. Parallel communication cable connection

Step4

|

Battery system self-test

| 1. Turn the ON/OFF switch to the “ON” state
2. Press SW button 3S to wake up battery
3. Check the system output voltage and led status
4. Shut down the system

Step5

|

Connecting inverter

| 1. Connect total positive & total negative cable of the

battery system to the inverter

2. Battery module total positive cable installation
3. Battery module total negative cable installation
4. Connect the communication cable from the master CAN

IN to the inverter

5.Turn on the Power switch and wake up system by SW

button

6.Close the DC breaker between inverter and battery
7.Turn on the inverter and check the communication

between inverter and battery system

Installation preparation

1. Prepare equipment and tools for installation.
2. Check the BX51100 unit and confirm that the ON/OFF switch is in the “OFF” state to ensure the device is shut off.

Mechanical installation

Brackets Installation:

1. 1. BX51100 brackets The BX51100 bracket is shown before installation as shown in
2. Place the BX51100 and brackets as shown in the figure3-3, and insert the BX51100 into the brackets. Each bracket is connected to the module by four screws, two screws on one side. As shown in
3. Install another module as the same method,don’t tighten the screw first, put it on top of the first battery,as shown in
4. Install all screws according to the hole position and there are screws on the front and back need to be fixed.
5. Stack the required number of battery and bracket combinations as described above, and fix the screws, twisting force keeps 9.8N·m. Shown as

Wall hanging Installation method

1. Use the positioning cardboard (provided in accessory package) and mark the screw hole positions on the wall, as shown on the right.
2. The cardboard must be perpendicular to the ground while drawing the holes.
3. The bottom of the cardboard is about 300mm from the ground.
4. According to the position of the mark, 8 holes in diameter 10mm and depth of more than 70mm are hit on the wall with an electric drill, which are used for fitting expansion bolt M6.
5. Fixing the expansion bolt M6 into the bottom of the hole on the wall, and fix the Support bracket and Battery bottom bracket on the wall with M6 bolts. Twisting force keeps 9.8N·m.
6. Carry or hoist the battery box to the installed Battery bottom bracket. Fixing the Support bracket and the upper part of the battery box with M6 bolts, twisting force keeps 9.8N·m.Then fixing the Battery bottom bracket and the bottom part of the battery box with M6 bolts. Twisting force keeps 9.8N·m.

Electrical installation
Before connecting the power cables, use multimeter to measure cable continuity, short circuit, confirm positive and negative, and accurately mark the cable labels. Measuring methods：

• Power cable check: select the buzzer mode of multimeter and detect the both ends of the same color cable. If the buzzer calls, it means the cable is in good condition.
• Short circuit judgment: choose multimeter resistor file, probe the same end of positive and negative pole, if the resistor shows infinity, means that the cable is available.
• After visual testing of power line connection, the positive and negative poles of the battery shall be connected respectively to the positive and negative poles of the opposite terminal.

It is better to add a circuit breaker between the inverter and the battery system. The selection of the circuit breaker requires:

• Voltage: U>60V
• Current: I =
• Inverter power 45V

The circuit breaker is installed between the battery module and the inverter, as shown in

Note:

1. For more ADD Settings，Reference 2.3.1 “DIP switch definition and description”
2. After the whole system connection, set the master DIP mode according to the inverter model firstly, then start the battery.
3. The BAT-INV comms cable is from inverter comm port to master CAN IN port, BAT-BAT cable is from master CAN OUT to slave1 CAN IN, slave1 CAN OUT to slave2 CAN IN…
4. Each pair of power cable, it’s limited continuous current is 120A, so if the inverter Max. work current more than 120A, please add power cable according to the proportion.

Battery parameter settings on the inverter

• Max Charging(Bulk) Voltage: 56.5V
• Absorption Voltage: 56V
• Float Voltage: 55.5V
• Shut Down(cut off)
• Voltage: 48~50V
• Shut Down(cut off) SOC: 20%
• Restart Voltage: 52V
• Max Charge Current: 50A*battery
• QTY Max Discharge Current: 50A*battery

Register on the website after installation
After the battery system installation is completed and the running is normal, you need to log in to the DYNESS official website to register the product installation and use information to make the product warranty effective. Please follow the instructions on the website to register. http://www.dyness- tech.com.cn Service Sign Up

Use, maintenance and troubleshooting

Battery system usage and operation instructions
After completing the electrical installation, follow these steps to start the battery system.

1. Refer to the description of the DIP switch of 2.3.1 to prepare the battery module before starting up, then press the ON/OFF button to the ON position, press and hold the SW button for 3 seconds.
2. After the indicator self-test, the RUN indicator will light and the SOC indicator will be on (100% SOC status in the Figure4-1).

Caution:

1. After pressing the power button, if the battery status indicator on the front panel continues to be red, please refer to the “4.2 Alarm description and processing “. If the failure cannot be eliminated, please contact the dealer timely.
2. Use a voltmeter to measure whether the voltage of the circuit breaker battery access terminal is higher than44.8V, and check whether the voltage polarity is consistent with the inverter input polarity. If the circuit breaker battery input terminal has a voltage output and is greater than 44.8V, then the battery begun to work normally.
3. After confirming that the battery output voltage and polarity are correct, turn on the inverter, close the circuit breaker.
4. Check if the indicator of the inverter and battery connection (communication indicator and battery access status indicator) is normal. If it is normal, successfully complete the connection between the battery and the inverter. If the indicator light is abnormal, please refer to the inverter manual for the cause or contact the dealer.

Alarm description and processing
When protection mode is activated or system failure occurred, the alarm signal will be given through the working status indicator on the front panel of the BX51100. The network management can query the specific alarm categories. If the fault such as single cell over voltage, charging over-current, under- voltage protection, high-temp protection and other abnormalities which affects the output, please deal with it according to Table 4-1.

Main alarm and Protection

Charge state

| Over-current| RED

Buzzer start

| Stop charging and find out

the cause of the trouble

High temp| RED| Stop charging

Discharge state

| Over-current| RED

Buzzer start

| Stop discharging and find

out the cause of the trouble

High temp| RED| Stop discharging and find

out the cause of the trouble

Total voltage

undervoltage

| RED

Buzzer start

| Start charging
Cell voltage

undervoltage

| RED

Buzzer start

| Start charging

Analysis and treatment of common faults
Analysis and treatment of common faults in the Table 4-2: Table 4-2 Analysis and treatment of common faults

No .|

Fault phenomenon

|

Reason analysis

|

Solution

---|---|---|---

1

| The indicator does not respond after the

power on

|

Total voltage lower than 35V

|

Check the total voltage

2

|

No DC output

| Battery data status is abnormal.

Battery gets into over-discharged protection

| Read the battery

information on the monitor.

3

| The DC power supply time is too short|

Battery capacity become smaller

| Storage battery replacement or add more

modules

4| The battery can’t be

fully charged to 100%

| Charging voltage is too low| Adjust charging voltage at

56.5V or 57V

5

| The power cable sparks once power on

and ALM light RED

|

Power connection short-circuit

| Turn off the battery, check the cause of the short

circuit

6

|

Communication fault

| The DIP setting of the host is wrong/ the battery type of the inverter is wrong/ Communication cable used incorrectly/The communication cable is incorrectly connected at the battery communication port or the inverter communication port/The battery firmware version is too low to support the

inverter

|

Check these possible causes one by one

If you need any technical help or have any question, please contact the dealer in time.

DAQIN NEW ENERGY TECH (TAIZHOU) Co.,LTD
Address: Building 13, Jiangyan Industrial Park, Sanshui Street, Jiangyan District, Taizhou City, Jiangsu Province，225500 Email: sales@dyness-tech.com Website: www.dyness-tech.com.cn

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