Dyness POWERCUBE Series User manual

POWERCUBE
User Manual

POWERCUBE User Manual
I
Content
Statement of Law .....................................................................................................................................1
Safety Precautions....................................................................................................................................2
Preface......................................................................................................................................................3
1 Introduction..........................................................................................................................................1
1.1 Brief Introduction..........................................................................................................................1
1.2 Product Properties........................................................................................................................1
1.3 Product identity definition............................................................................................................1
2 Product Specification............................................................................................................................3
2.1 Size and Weight ............................................................................................................................3
2.2 Performance Parameter ...............................................................................................................3
2.3 Interface Definition.......................................................................................................................3
2.4 Battery Management System(BMS)..............................................................................................4
2.4.1 Voltage Protection ................................................................................................................4
2.4.2 Current Protection ................................................................................................................4
2.4.3 Temperature Protection .......................................................................................................5
2.4.4 Other Protection ...................................................................................................................5
3 Installation and Configuration ..............................................................................................................6
3.1 Ready for installation....................................................................................................................6
3.1.1 Environmental requirements ................................................................................................6
3.1.2 Tools and data.......................................................................................................................6
3.1.3 Technical preparation ...........................................................................................................7
3.1.4 Open the box to have inspection ..........................................................................................7
3.1.5 Engineering coordination......................................................................................................9
3.2 Equipment installation..................................................................................................................9
3.2.1 Installation preparation .........................................................................................................9
3.2.2 Mechanical installation ..........................................................................................................9
3.2.3 Electrical installation ...........................................................................................................10
4 Use, maintenance and troubleshooting .............................................................................................14
4.1 Battery system usage and operation instructions ......................................................................14
4.2 Alarm description and processing...............................................................................................14
4.3 Analysis and treatment of common faults..................................................................................15

POWERCUBE User Manual
1
Statement of Law
Copyright of this document belongs to Jiangsu Daqin New Energy Technology 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 Jiangsu Daqin New Energy Technology 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 Jiangsu Daqin New Energy
Technology Co., Ltd when the product or technology is updated.
Web URL：http://www.dyness.net/
Please note that the product can be modified without prior notice.
Revision History
Revision NO.
Revision Date
Revision Reason
1.0
2019.04.22
First Published

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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
(Wires for instance).
⚫Please do not stab, hit, trample or strike the battery in any other way.
⚫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 secondary disaster.
⚫For your safety, please do not arbitrarily dismantle any component in any circumstances
unless a specialist or an authorized one from our company, device breakdown due to
improper operation will not be covered under warranty.
Caution
⚫We have strict inspection to ensure the quality when products are shipped out, however,
please contact us if case bulging or another abnormal phenomenon.
⚫For your safety, device shall be ground connected properly before normal use.
⚫To assure the proper use please make sure parameters among the relevant device are
compatible.
⚫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 life span and product reliability, please
consider the operation environment abundantly to make sure 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 discharges fully and starts over-discharging
protection.
Formula of theoretical standby time: T=C/I (T is standby time, C is battery capacity, I is total
current of all loads).

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Preface
Manual declaration
Powercube series energy storage system is composed of several B4874 energy storage system
units connected in parallel to provide users with energy storage power generation. During the
day, the excess power of photovoltaic power generation can be stored in the battery. At night or
when needed, the stored electrical energy can be used to supply power to the electrical
equipment, which can improve the efficiency of photovoltaic power generation, peak load
shifting, and emergency power backup.
This user manual describes 4Box, 5Box, and 6Box in the Powercube series. It details the basic
structure, parameters, installation, and operation and maintenance of the equipment.

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1 Introduction
1.1 Brief Introduction
B4874 lithium iron phosphate battery system is a standard battery system unit, which can
connect to 14.2KWh, 17.7KWh and 21.3KWh in 4, 5 and 6 B4874 respectively. Users can
choose the appropriate Powercube specifications according to their 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.
1.2 Product Properties
Powercube series energy storage product’s anode materials are lithium iron phosphate,
battery cells are managed effectively by BMS with better performance, the system feature
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, with 3 remote functions
(remote-measuring, remote-communicating and remote-controlling).
⚫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, -20oC ~ +55 oC, circulation
span and discharging performance are well under high temperature.
⚫Less volume, lighter weight and longer system backup time.
1.3 Product identity definition
Battery voltage is higher than safe voltage, direct contact with
electric shock hazard.
Be careful with your actions and be aware of the dangers.
Read the user manual before using.
The scrapped battery cannot be put into the garbage can and must
be professionally recycled.

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After the battery life is terminated, the battery can continue to be
used after it recycled by the professional recycling organization and
do not discard it at will.
This battery product meets European directive requirements.
This battery product passed the TUV certification test.

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2 Product Specification
2.1 Size and Weight
Table 2-1 Powercube series Device Model
Product
Product Series
Nominal
Voltage
Nominal
Capacity
Dimension
(mm)
Weight
(kg)
IP
Level
Powercube
Powercube-4BOX
DC48V
296Ah
492×600×862
≈183
IP65
Powercube
Powercube-5BOX
DC48V
370Ah
492×600×862
≈215
IP65
Powercube
Powercube-6BOX
DC48V
444Ah
492×600×1000
≈254
IP65
2.2 Performance Parameter
Table 2-2 Powercube series performance parameter
Item
Powercube-4Box
Powercube-5Box
Powercube-6Box
Nominal Voltage(V)
48
48
48
Work Voltage Range(V)
40.5~54
40.5~54
40.5~54
Nominal Capacity(Ah)
296
370
444
Nominal Energy(kWh)
14.2
17.76
21.3
Nominal Power(kW)
4.3
5.3
6.2
Max Power(kW)
14.2
17.76
21.3
3S Peak Power(kW)
14.2
17.76
21.3
3S Peak Current(A)
296
370
444
Charging Current(A)
90
110
130
Discharge Current(A)
90
110
130
2.3 Interface Definition
This section elaborates on interface functions of the back interface of the device.
Figure2-3The sketch of back interface of Powercube.

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Table 2-3 Interface Definition
Item
Name
Definition
1
RJ45 network cable
connector
Reserve
2
RJ45 network cable
connector
CAN/RS485 communication interface (Factory default
CAN communication mode)
3
Total negative cable
waterproof connector
The battery DC output negative pole
4
Total positive cable
waterproof connector
The battery DC output positive pole
2.4Battery Management System(BMS)
2.4.1 Voltage Protection
Discharging Low Voltage Protection：
When any battery cell voltage is lower than the protection value during discharging, the over-
discharging protection starts, battery stops supplying power to the outside. When the voltage of
each cell recovers to rated return range, the protection is over.
Charging Over Voltage Protection：
When total voltage or any battery cell voltage reaches the protection value during charging,
battery stops charging. When total voltage or a cell recover to rated return range, the protection
is over.
2.4.2 Current Protection
Over Current Protection in Charging：
Device stops charging when charging current exceeds the protection value.
1
4
3
2

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Protection is over after rated time delaying.
Over Current Protection in Discharging：
Device stops discharging when discharging current exceeds the protection value.
Protection is over after rated time delaying.
2.4.3 Temperature Protection
Less/Over temperature protection in charging：
When battery’s temperature is beyond range of 0 ℃~+55 ℃during charging, temperature
protection starts, device stops charging.
The protection is over when it recovers to rated return range.
Less/Over temperature protection in discharging：
When battery’s temperature is beyond range of -20℃~+55℃during discharging, temperature
protection starts, device stops supplying power to the outside.
The protection is over when it recovers to rated return range.
2.4.4 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 30 seconds.
Caution
The short circuit protection function cannot be activated when a short circuit occurs while the battery
is turned on.
Self-Shutdown：
When device connects no external loads for over 24 hours, device will dormant standby
automatically.
Caution
Battery’s maximum discharging current should be more than load’s maximum working current.

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3 Installation and Configuration
3.1 Ready for installation
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 48V
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:
The isolation gloves Safety goggles Safety shoes
3.1.1 Environmental requirements
Working temperature: -20 oC ~ +55oC
•Charging temperature range is 0oC~+55 oC,
•Discharging temperature range is -20 oC ~+55 oC
Storage temperature: -10 oC ~ +35 oC
Relative humidity: 5% ~ 85%RH
Elevation: no more than 4000m
Operating environment: no conductive dust and corrosive gas sites
•Installation location should be away from the sea to avoid brine and high humidity
environment.
•The ground is flat and level.
•There is no flammable explosive near to the installation places.
•The optimal ambient temperature is 15oC ~ 30 oC
•Keep away from dust and messy zones
3.1.2 Tools and data
Hardware tool
Tools and meters that may be used are shown in table 3-1.
Table 3-1 Tool instrument
Name
Screwdriver (word, cross)
AVO meter
Wrench
Clamp meter

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Inclined pliers
Insulating tape
Needle nose pliers
The thermometer
Clip forceps
Wrist strap
Wire stripper
AVO meter
Electric drill
Tape
3.1.3 Technical preparation
Electrical interface check
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 greater 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 equipment, 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 articles are placed beside the battery.
3.1.4 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:

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Item
Specification
Quantity
Figure
4Box
5Box
6Box
Cabinet
492×600×862mm
1
1
/
492×600×1000mm
/
/
1
Battery-B4874
48V/74Ah
384×481×130mm
4
5
6
Positive parallel
cable of battery
module
Orange
/25mm2/L115mm
3
4
5
Total positive
cable
Orange
/25mm2/L3250mm
1
1
/
Orange
/25mm2/L3400mm
/
/
1
Negative parallel
cable of battery
module
Orange
/25mm2/L115mm
3
4
5
Total negative
cable
Orange
/25mm2/L2500mm
1
1
1
Internal CAN
communication
line
White/200mm/
Double RJ45 plug
3
4
5
External CAN
communication
line 1
L700mm/ Single
RJ45 plug
1
1
1
External CAN
communication
line 2
L2000mm/ Single
RJ45 plug
1
1
1

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3.1.5 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 in table2-2.
⚫Mounting space and bearing capacity.
Make sure that the battery has enough room to install, and that the battery rack and
bracket have enough load capacity.
⚫Wiring.
Make sure the power line and ground wire are reasonable. Not easy to short-circuit,
water and corrosion.
3.2 Equipment installation
Table 3-2 Installation steps
Step1
Installation
preparation
Confirm that the ON/OFF switch on the front panel of each
B4874 unit is in the “OFF” state to ensure no live operation.
Step 2
Mechanical
installation
1. Cabinet placement position determination
2. Top cablespre-installed
3. Battery module installation
Step3
Electrical
installation
1. Battery module parallel cable installation
2. Battery module total positive cable installation
3. Battery module total negative cable installation
4. Internal CAN communication interface connection
3.2.1 Installation preparation
1. Prepare equipment and tools for installation
2. Check the cabinet and confirm that the ON/OFF switch on the front panel of each B4874
unit is in the "OFF" state to ensure no live operation.
3.2.2 Mechanical installation
Figure3-1
1. Fix the Powercube cabinet to the mounting
position and remove the front cover.
Pass the total positive cable and the total
negative cable through the waterproof
connector on the back of the cabinet, and
insert the external CAN cable into the RJ45
connector socket.

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Figure3-2
Figure3-3
3.2.3 Electrical installation
Before connecting the power cables, using multimeter to measure cable continuity,
short circuit, confirm positive and negative, and accurately mark the cable labels.
Measuring method:
•Cable availability: Select the buzzer and use the probe to measure the ends of the
same color cable. If the buzzer calls, it means the cable is available.
•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 is connected well, 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 Figure
3-4:
2. Place the B4874 unit on the cabinet bracket
as shown in the figure and push it into the
cabinet to the installation position.
3. Fix the B4874 unit in the cabinet with nuts
through the mounting holes top on the
hanging ears of the B4874 module chassis.
The other units are in this order, as shown
in the figure.

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Caution
Note: If you have any questions during installation, please contact your dealer to avoid damage
to the equipment.
1. Install the power cable
Install the negative parallel cables and the positive parallel cables as shown in Figure 3-4,
then connect the positive cable and the total negative cable.
Among them, the positive cable is a red plug, and the negative cable is a black plug.
2. Install the communication line
Insert the external CAN communication line 1 into the IN-communication port of the
uppermost No. 1 B4874, take an internal CAN communication line, insert one end into
the OUT-communication port of No. 1 B4874, and the other end into the IN-
communication port of No. 2 B4874 on the next layer.
Connect all communication lines in this order.
Foot position
Color
Definition
PIN1
Orange/white
485A
PIN2
Orange
XGND
PIN3
Green/white
485B
PIN4
Blue
CANH
PIN5
Blue/white
CANL
PIN6
Green
NC/NULL
PIN7
Brown/white
XIN
PIN8
Brown
NC/NULL
3. Connect to the inverter
Connect the total positive cable and the total negative cable that are pulled out from the
outside of the cabinet to the circuit breaker(the other end of the circuit breaker is
connected to the inverter), and the external CAN communication line 2 is connected to
the inverter. Complete as shown in Figure 3-4.

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Figure 3-4 Wiring diagram
Total negative
cable
Total
positive
cable
Positive
parallel cable
Negative
parallel cable
External CAN
communication
line 2
Internal CAN
communication
line
Circuit
breaker
Inverter
External CAN
communication
line 1

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Table 3-3 Battery& Inverter power matching table
Inverter Power
/kW
B4850
B4874
Parallel
number
Powercube
Type
System
Energy
(kWh)
Parallel
number
Powercube
Type
System
Energy
(kWh)
7.5-10.0
4
Powercube-
5Box
9.6
10.0-12.5
5
Powercube-
5Box
12.0
12.5-15.0
6
Powercube-
6Box
14.4
4
Powercube-
5Box
14.21
15.0-17.5
7
Powercube-
7Box
16.8
5
Powercube-
5Box
17.76
17.5-20.0
8
Powercube-
8Box
19.2
20.0-22.5
9
Powercube-
9Box
21.6
6
Powercube-
6Box
21.31
22.5-25.0
10
Powercube-
10Box
24.0
7
Powercube-
6Box
24.86
25.0-27.5
11
Powercube-
11Box
26.4
27.5-30.0
12
Powercube-
12Box
28.8
8
Powercube-
6Box
28.42
30.0-35.0
9
Powercube-
6Box
31.97
35.0-37.5
10
Powercube-
6Box
35.52
37.5-40.0
11
Powercube-
6Box
39.07
40.0-45.0
12
Powercube-
6Box
42.62

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4 Use, maintenance and troubleshooting
4.1 Battery system usage and operation instructions
After completing the electrical installation, follow these steps to start the battery system.
1Press the ON/OFF button to the ON position, press and hold the SW button for 3
seconds.
After the indicator self-test, the RUN indicator will light and the SOC indicator will be
on (100% SOC status in the Figure 4-1).
Figure4-1
Note:
After pressing the power button, if the battery status indicator on the front panel
of B4874 unit 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.
2Use a voltmeter to measure whether the voltage of circuit breaker battery access
terminal is greater than 37V, 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 37V, then the battery has started normal work.
3After confirming that the battery output voltage and polarity are correct, turn on
the inverter, close the circuit breaker.
4Check 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.
5After confirming the normal state, install the front cover of the cabinet.
4.2Alarm description and processing
When the protection action or fault occurs in the system, the alarm signal will be given
through the working status indicator on the front panel of the B4874. The network
management can query the specific alarm categories.
If the fault such as single cell overvoltage, charging over-current, under-voltage
protection, high-temp protection and other abnormalities which affects the output,
SW
SOC
C
ALM
CAN/485
IN
OUT
DRY CONTACT
RUN

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please deal with it according to Table 4-1.
Table 4-1 Main alarm and Protection
Statue
Alarm category
Alarm
indication
Processing
Charging
state
Cell over-voltage
RED
Stop charging and find out
the cause of the trouble
Over-current
RED
Stop charging and find out
the cause of the trouble
High temp
RED
Stop charging
Discharge
state
Over-current
RED
Stop discharging and find
out the cause of the trouble
High temp
RED
Stop discharging
Total voltage
undervoltage
RED
Start charging
Cell voltage undervoltage
RED
Start charging
4.3Analysis 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
Item
Fault phenomenon
Reason analysis
Solution
1
The indicator does
not respond after the
power on
Power switch is
broken
Check the power switch
2
No DC output
Battery data status
is abnormal
The network management is
connected to backstage
supporter server to read the
battery information.
3
The DC power supply
time is too short
Battery capacity
become smaller
Storage battery replacement
4
The battery can't be
full of electricity
Charging voltage is
too low
Adjust charging voltage within
54V ~ 55V range
5
The power line sparks
once power on and
ALM light RED
Power connection
short-circuit
Turn off the battery, check the
cause of the short circuit
If you have any technical help or question, please contact the seller in time.