GSC GBP48V Series User manual

USER MANUAL
GBP48V SERIES
Product manual of lithium iron
phosphate battery for communication
Version 1.0
JIANGSU GSO NEW ENERGY TECHNOLOGY CO.,LTD

CONTENTS
I、Installation Introduction..................................................................... 1
1.1 Carry or move..............................................................................1
1.2 Unpacking inspection................................................................. 1
1.3 Installation.................................................................................... 1
II、Product Introduction.......................................................................... 1
2.1 Specification................................................................................ 2
III、Product Performance........................................................................ 2
IV、System Description........................................................................... 3
4.1 Working mode............................................................................. 3
4.2 LED indicator description.......................................................... 3
4.3 Functional description................................................................ 4
4.4 Power on / Power off..................................................................6
4.5 Product picture and Data sheet................................................6
4.6 Performance test.........................................................................8
V、Communication description.......................................................... 14
5.1 RS485 Communication............................................................14
5.2 CAN Communication............................................................... 17
VI、Maintenance and troubleshooting................................................ 22
6.1 Daily maintenance.................................................................... 22
6.2 Caution....................................................................................... 22
VI、Warranty............................................................................................23
VI、Lithium battery management requirements................................ 23

PRODUCT MANUAL OF LITHIUM IRON PHOSPHATE BATTERY FOR COMMUNICATION
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I、Installation Introduction
1.1 Carry or move
During the transportation or movement of the lithium battery, avoid carrying it
upside down or sleeping on its side, and handle it carefully to avoid collisions.
1.2 Unpacking inspection
Check whether the battery is damaged during transportation.
Check accessories:
Parallel cable and communication cable (Configure as required)
1.3 Installation
1.3.1 Prepare before installation
Determine the installation environment and location
Laying the connecting wires
Installation tools (A Phillips screwdriver)
1.3.2 Installation environment and location
The battery needs to be installed in a ventilated and dry environment.
Considering that the battery adopts natural air cooling, the battery should not be too
close to the heat source to ensure the ambient temperature and maintenance space
around the battery.
Do not place the battery in any of the following environments.
High temperature Rain Fire source corrosion Slope
II. Product Introduction
This product is composed of high-quality lithium iron phosphate batteries (by
series and parallel) plus an advanced BMS battery management system. It can be
used as an independent DC power supply or as a "basic unit" to form a variety of
specifications of energy storage lithium battery power systems. High reliability and
long life. It can be used as a backup power supply for communication base stations, a
backup power supply for a digital center, a home energy storage power supply, an
industrial energy storage power supply, etc.

PRODUCT MANUAL OF LITHIUM IRON PHOSPHATE BATTERY FOR COMMUNICATION
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2.1 Specification
Configuration
Data
Function
Single cell
3.2V
No of series
15 S
16S option
Capacity
50AH/100AH
Settable/ Maximum
can be 20 parallels
Limit function
No
Option
LCD
No
Option
Storage function
Yes
Heating function
No
Option
Pre-charging function
Yes
Communication
RS485
CAN Option
III. Performance
The product adopts modular design, higher integration, and saves installation
space; adopts high-performance lithium iron phosphate cathode material, good
battery core consistency, and designed service life of more than 10 years; one-key
switch machine, front operation, front wiring, convenient installation Convenient
maintenance and operation; diverse functions, over-temperature alarm protection,
over-charge and over-discharge protection, short-circuit protection; strong
compatibility, can be seamlessly connected with UPS, photovoltaic power generation
and other main equipment; various forms of communication interfaces, CAN/RS485,
etc. can be based on Customized according to customer needs to facilitate the
flexible use of system remote monitoring. High-energy, low-power lithium battery
equipment achieves higher energy supply, lower energy consumption, and reduces
environmental pollution; adopts all-round, multi-level battery protection strategies and
fault isolation measures to ensure the safe operation of the system.
● Small size and light weight
● Maintenance-free
● Environmental protection and pollution-free materials, no heavy metals,
green and environmental protection
●
The standard cycle life exceeds 5000 times
● Accurately estimate the state of charge of the battery pack, that is, the
remaining power of the battery, to ensure that the power of the battery pack is
maintained within a reasonable range
●
Built-in BMS management system with comprehensive protection and
monitoring and control functions

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IV. System description
This product has a full-featured 8-16 series lithium-ion battery pack management
system, with protection and recovery of monomer over-voltage/under-voltage, total
voltage under-voltage/over-voltage, charge/discharge over-current, high
temperature, low temperature, and short circuit. Features. Realize accurate SOC
measurement during charging and discharging, and SOH health status statistics.
Achieve voltage balance during charging. Data communication with the host is
carried out through RS485 communication, parameter configuration and data
monitoring are carried out through the human-computer interaction of the upper
computer software, the communication with the host is carried out through 485 or
CAN communication, and the parameter configuration and data monitoring are
carried out through the human-computer interaction of the upper computer software.
(The baud rate of the host computer is 9600 or19200).
4.1 Working mode
● Charging mode: When the BMS detects that the charger is connected and
the external charging voltage is greater than the internal battery voltage by more
than 0.5V, it will turn on the charging MOSFET for charging. When the charging
current reaches the effective charging current, the charging mode is entered. In
charging mode, the charge and discharge MOSFETS are both closed.
● Discharge mode: When the BMS detects the load connection and the
discharge current reaches the effective discharge current, it enters the discharge
mode.
●
Standby mode: When the above two modes are not satisfied, enter the
standby mode.
●
Shutdown mode (default closed): Normal standby for 24 hours, battery triggers
under-voltage protection, execute button shutdown, BMS enters shutdown mode.
Wake-up conditions in shutdown mode: 1. Charge activation; 2. Press key to turn on；
4.2 LED indicator introduction
LED light sequence, 1 running light, 1 alarming light, 4 capacity indicators
● Capacity indication

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● Status indication
4.3 Functional description
● Standby state: After the BMS is correctly connected and powered on, and there is no
protection state of over-voltage, under-voltage, over-current, short circuit, over-temperature,
under-temperature, etc., press the reset button to turn on the device, and the BMS is in standby
state.
In the BMS standby state, the running light flashes, and the battery can be charged and
discharged.
● Cell overcharge protection and recovery: When any section of the battery cell is higher
than the set value of cell overcharge protection, the BMS enters the overcharge protection state,
and the charging device cannot charge the battery.
After cell over-voltage protection, when the highest cell voltage drops below the cell
overcharge recovery value and the SOC is lower than 96%, the overcharge protection state is
released. It can also be discharged.
● Total voltage overcharge protection and recovery: When the battery voltage is higher
than the total voltage overcharge protection setting value, the BMS enters the overcharge
protection state, and the charging device cannot charge the battery. When the total voltage drops
below the total overcharge recovery value and the SOC is lower than 96%, the overcharge
protection state is released. It can also be discharged.
● Single over-discharge protection and recovery: When any section of the battery cell is
lower than the set value of the single over-discharge protection, the BMS enters the
over-discharge protection state, and the load cannot discharge the battery. BMS shuts down after
1 minute of communication.
After over-discharge protection occurs, charging the battery pack can release the
over-discharge protection state. Or press the reset button once, and the BMS will turn on and
re-check whether the battery pack voltage reaches the restored value.
● Total voltage over-discharge protection and recovery: When the battery voltage is lower
than the total voltage over-discharge protection setting value, the BMS enters the over-discharge
protection state, and the load cannot discharge the battery. BMS shuts down after 1 minute of
communication.

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ra
After over-discharge protection occurs, charging the battery pack can release the
over-discharge protection state. Or press the reset button once, and the BMS will turn on and
re-check whether the battery pack voltage reaches the restored value.
● Charge over-current protection and recovery: When there is no charge current limit
function, the charge over-current protection can be triggered.
When the charging current exceeds the charging over-current protection setting value, and
the delay time is reached. The BMS enters the charging over-current protection, and the charging
device cannot charge the battery.
After charging over-current protection occurs, the BMS will automatically delay recovery and
re-detect the external charger current. Discharge can also release the charge over-current
protection.
● Discharge over-current protection and recovery: When the discharge current exceeds
the discharge over-current protection setting value, and the delay time is reached. The BMS
enters the discharge over-current protection, and the load cannot charge the battery.
After discharge over-current protection occurs, the BMS will automatically delay recovery
and re-detect the external load current. Charging can also release the discharge over-current
protection.
The discharge over-current protection has two levels of protection, which can restore the
transient over-current protection as well as the discharge over-current protection. The transient
over-current protection will be locked when the condition is reached, and it must be turned off
and turned on or the charging is released.
● Temperature protection and recovery: BMS has 6 temperature detection ports, which
implement protection measures by monitoring temperature changes.
● Charging and discharging high temperature protection and recovery: When charging and
discharging, when any of the 4 batteries NTC is higher than the high temperature protection
setting value, the BMS enters the high temperature protection. The BMS stops charging or
discharging.
When the cell temperature is lower than the high temperature recovery value, the BMS
resumes charging or discharging.
● Charging and discharging low-temperature protection and recovery: When charging and
discharging, when the NTC of 4 batteries is below the low-temperature protection setting value,
the BMS enters the low-temperature protection. The BMS stops charging or discharging.
When the cell temperature is higher than the low tempe ture recovery value, the BMS
resumes charging or discharging.
● Environmental temperature alarm, power temperature protection: When NTC detects
that the ambient temperature is higher than the set value of ambient high temperature, the BMS
generates an alarm. BMS will not stop charging and discharging.
When NTC detects that the power temperature is higher than the power protection setting
value, the BMS enters the power high temperature protection. Stop charging and discharging.
● Equalization function: The BMS has standby and charge equalization functions. The
BMS system uses an energy-consuming equalization circuit, and the equalization opening
voltage is adjustable by software. Any section of the equalization opening condition is higher than
the equalization opening voltage and the pressure difference meets the conditions.
The equalization stops when charging is stopped or the cell voltage difference is less than
the set value.

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4.4 Power on/power off
No
Function
Desp
1
Power
on/Start
When the BMS is in the dormant state, press the reset
button once, the BMS will be activated, and the LED
indicator will flash in turn, then it will enter the normal
working state.
2
Power
off/dormant
When the BMS is in the standby or discharging state, press
this key for 3 seconds, the BMS will be dormant, the LED
indicator will flash in turn, then it will enter the dormant state.
The BMS has no power consumption after sleep.
4.5 Product picture and data sheet
RACK TYPE
------------------------------------------------------------------------------------
POWER WALL
------------------------------------------------------------------------------------

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Model
GBP48V-50AH
GBP48V-100AH
Nominal volt （ V ）
48
Nominal capacity （ AH ）
50
100
Working volt range
42-56.25
Recommend charging volt （ V ）
52.5
Recommend discharging cutoff volt （ V ）
45
Standard charging current(A)
25
50
Max. Constant charging current(A)
50
100
Standard discharging current （ A ）
25
50
Max. Discharging current （ A ）
50
100
Temperature （℃）
-30 ℃～ 60 ℃ (Recommend 10 ℃～ 35 ℃ )
Allowable humidity range
0 ～ 85% RH
Storage temperature （℃）
-20 ℃～ 65 ℃ (Recommend 10 ℃～ 35 ℃ )
Protection
IP20
Cooling method
Natural air cooling
Maximum Dimension （ W*D*H ） for rack type
482.6*360*175
482.6*535*175
Maximum Dimension （ W*D*H ） for power wall
410*180/220*590MM
(Including mounting rack)
Net Weight
30KG
57KG

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4.6 Performance test
Nominal Capacity
The battery pack is placed in a 25℃environmental chamber, 0.2C constant
current and constant voltage to 54.65V, 0.05C cut-off, put it aside for 60 minutes; 1C
discharge to 37.5V.

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Rate charging
The battery pack are charged at a constant current of 0.1C, 0.2C, 0.3C, 0.5C,
and 1C to 54.75V in an environment of 25℃.
Stop charging after the constant voltage reaches 0.05C, and record the charging
test data under different magnifications.

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Rate discharge

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PRODUCT MANUAL OF LITHIUM IRON PHOSPHATE BATTERY FOR COMMUNICATION
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Storage for
7 days
Storage for
14 days
Storage for
21 days
Storage for
28 days
Storage performance-place at room temperature
In a normal temperature environment, 100% SOC storage for 28 days, test
capacity retention and recovery rate(Test for 5 groups batteries)
Storage performance-place at high temperature
55℃，100% SOC storage4*7 28 days, test capacity retention and recovery
rate(Test average value for 5 groups batteries)

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Cycle performance
Testing method:
25℃, 0.2C constant current charge to 53.25V, constant voltage to 0.05C cut-off;
after 30 minutes of storage, 0.2C discharge Power to 42V, cycle to 80% SOC cut-off;
25℃, 1C constant current charge to 53.25V, constant voltage to 0.05C cut-off;
after 30 minutes of storage, 1C discharge to 42V, cycle to 80% SOC cut-off.

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V. Communication introduction
5.1 RS485 communication
The BMS has RS485 communication for battery pack assembly, and the baud
rate is 9600bps. RS485 communication interface adopts 8P8C network cable
interface.
RS485 Communication interface definition:
Pin
definition
1 、 8
RS485-B
2 、 7
RS485-A
3 、 6
4 、 5
NC
RS485 communication：
Parallel communication cautions
For safe operation and compliance, it is necessary to check whether the
appearance of each battery pack is damaged before paralleling.If there is no such
situation, press the start button of the battery pack, visually check whether the LED
indicator is normal, and then use the multimeter measures the voltage value of each
battery pack in turn. When the battery pack voltage difference exceeds 0.5V, it
cannot be directly connected in parallel.The battery pack need to be charged and
discharged separately so that the voltage difference is within 0.5V, and then can
parallel using.
When connecting in parallel, each battery pack must be turned off and use the
parallel cable provided by us to ensure that the positive terminal (+) on the battery
pack is connected to the positive terminal (+), the negative terminal (-) is connected
to the negative terminal (-) and tighten the bolts. When the connection is complete,
turn on each battery pack in turn.

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All wiring must be performed by professionals.
Parallel communication
When multiple machines are connected in parallel, the RS485 interface is used
as the parallel communication interface, and the CAN interface is used as the uplink
communication interface. The terminal device can read the sum of the battery data of
all parallel PACKs through the CAN interface.
Dialing address selection
Parallel DIP switch definition: For multi-machine communication when battery
packs are connected in parallel, the DIP switch is used to distinguish different pack
addresses. The hardware address can be set by the DIP switch on the board. Refer
to the table below for the definition of the DIP switch.
Add
DIP switch position
Remarks
#1
#2
#3
#4
0
OFF
OFF
OFF
OFF
Pack0
1
ON
OFF
OFF
OFF
Pack1
2
OFF
ON
OFF
OFF
Pack2
3
ON
ON
OFF
OFF
Pack3
4
OFF
OFF
ON
OFF
Pack4
5
ON
OFF
ON
OFF
Pack5
6
OFF
ON
ON
OFF
Pack6
7
ON
ON
ON
OFF
Pack7
8
OFF
OFF
OFF
ON
Pack8
9
ON
OFF
OFF
ON
Pack9
10
OFF
ON
OFF
ON
Pack10
11
ON
ON
OFF
ON
Pack11
12
OFF
OFF
ON
ON
Pack12
13
ON
OFF
ON
ON
Pack13
14
OFF
ON
ON
ON
Pack14
15
ON
ON
ON
ON
Pack15
Note: When in parallel, the battery pack address dial code is set from Pack1 downward.

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two pieces in parallel diagram
Three pieces in parallel diagram
PC
Output
PC
Output

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Four pieces in parallel diagram
▲ For more parallel machines, refer to the above parallel machine diagram and
increase in order.
5.2 CAN Communication
The BMS has the CAN communication function for uploading battery packs, and
the CAN communication interface adopts the 8P8C network cable interface. It can
communicate with inverter or CAN TEST through CAN interface. When the battery
pack is assembled, connect through RS485 communication, and finally upload the
battery pack data, status and information to PCS through CAN communication.
CAN communication interface definition:
Pin
Definition
1 、 2 、 7 、 8
NC
4
CAN-L
5
CAN-H
3 、 6
PC
Output

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CAN communication：
Dialing address selection
Parallel DIP switch definition: When the battery pack is connected in parallel, use the
DIP switch to distinguish different pack addresses, and the hardware address can be set
by the DIP switch on the board.
Stand-alone address setting: 0000 0000
Parallel address setting: Refer to the table below for the definition of the DIP switch.
Alarming Dial add
RS485
Capacity Running CAN
On/Off
No of parallel
parallel
address