1.Product introduction

（ 1 ） This Shenzhen SAIJIAOYANG ENERGY SCLENCE TECHNOLOGY Co,Ltd pack (including BMS) designed and manufactured by Shenzhen SAIJIAOYANG ENERGY SCLENCE TECHNOLOGY Co,Ltd. It consists of 16S1P cells in series. The battery is assembled with intelligent sorting, which is accurate and reliable. The BMS uses a professional protection plate test system to conduct a comprehensive test before going online to ensure that the BMS achieves a comprehensive and effective protection for battery pack during the period of use. This product has the characteristics of high energy density, long life, safety and reliability, light weight, and wide temperature range.

（2）The 51.2V100Ah product has a height of 155 mm and a width of 442- mm. It is specially designed for 575-mm cabinet installation. It is mainly used for communication backup batteries and large-capacity backup power supply meet the requirements of energy storage systems, hybrid energy base stations, backup power supplies, and home energy systems.

2.Function description

The network position of the LFP battery module in the communication power system is shown in Figure 1.

Figure 1 Network position of LFP module in communication power system The LFP module keeps the floating charge online when it is fully charged. When the power module output is abnormal (non-output overvoltage), it provides a DC backup function with zero transition time. The built-in battery management unit performs charge and discharge management of the battery pack and provides various of protection functions, at the same time, the module's operating status and alarm information are reported via the alarm indication interface RS485. The RTN (+) ground in Figure 1 is only for illustration. The positive and negative output ports of the external battery pack of the 51.2V100Ah LFP battery module must be completely isolated from the module's metal case2.

The appearance of the front panel of the 51.2V100Ah module is shown in Figure 2 and the panel silk screen requirements are shown in Table 2.

Figure 2: The structure size of the battery and the appearance of the panel

Device name	Silk screen logo	Function description
DIP switch	ADDR	DIP switch address setting
RJ45-1 interface/ RJ45	RS485/ CAN	485Communication input
RJ45-2 interface/ RJ45	RS485/ RS485	485Communication output
Green LED indicator	RUN	Show running status
Green LED indicator	ON/OFF	Show ON/OFF status
Red LED indicator	ALM	Show alarm status
Capacity display indicator	SOC	Display battery capacity status
Reset	RESET	Control the booting and shutdown of BMS system.
Positive terminal	P+	Battery positive output 1 way terminal
Negative terminal	P-	Battery negative output 1 way terminal
RS232 interface	RS232	RS232 Communication output
on-off	POWER SWI TCH	Battery system switch
Ground Electrode		Ground terminal

3.Extreme working range

The battery is suitable for working in the following range. Unless otherwise stated, the actual operation of the

device cannot exceed the following conditions.

4.Ystem parameters

Rated Voltage:51.2V

Rated Capacity:100Ah

The battery weight:47±0.3Kg

Rated Total Energy:5.12kWh

Compound mode:16S1P

Internal resistance：≤40 mΩ

cycle life：≥6000cycles @25±2℃, 0.5C/0.5C,80%DOD, residual capacity decay to 80Ah

Standard charging current：20.4A<0.2C>

Max.Charge Current：50A(Charging Current @25 C)

Charge Voltage：58.4V<3.65V/ Cell >

Standard discharge current：50A<0.5C>

Max.Charge Current：100A(Max Continuous Discharge Current @25 C)

Discharge Cut-off Voltage：43.2V<2.7V/ Cell >

Discharge Temperature：-20℃ to 60℃

Charge Temperature：0℃ to 55℃

Dimensions（mm）：600mm*410mm*150mm

5.BMS function inside the battery module

5.1 When the battery is charging

4 capacity indicators (CAPACITY) will display according to the current battery capacity The running indicator (RUN) is always on; When 4 capacity indicators of the battery are on. When the RUN light is off, the battery is fully charged

5.2 When the battery is discharged

RUN light flashes once every about 0.5S;4 capacity indicators (CAPACITY) will be displayed according to the remaining capacity of the battery discharge When the battery is discharged to the over-discharge protection voltage, it enters into protection. All battery lights will be dark.

5.3 Battery Alarm

When the battery fails, the ALM indicator is displayed in red, and the battery failure is warning.

5.4 ADS dial code

The position of the DIP switch is on the left side of the socket of the protection plate, the shape is as shown below

Dial setting

When parallel communication is performed, the dial-up address of each PACK must be configured. The dialling number is in the BCD code format. Address 1 is defined as (black dot is OFF state, blank space is ON state, the same below), address 2 and other addresses, and so on.

5.5 Host computer communication address code setting

Enter the code system of the current master or slave in the system parameters of the upper computer, and the communication can be detected and communicated. The BMS is configured to work in stand-alone mode, and the dialing address can be any address (need to match with the upper computer or FSU address); the BMS is configured to work in cascade, and the dialing address is selected from 1 to 15 (need to match with the upper computer or FSU address)

5.6 Working Mode

5.6.1Charging mode

When the BMS detects that there is an external charging voltage ≥58.4V, and the cell voltage and temperature are both within the chargeable range, it will turn on the charging MOSFET for charging. When the charging current reaches the effective charging current, it enters the charging mode.

5.6.2 Floating charge mode

When the detection of AC connection, charging current, charging temperature and other abnormal charging protection cannot be charged normally, or the external charging voltage is close to the internal voltage of the battery, the BMS enters the floating charging mode. In floating charging mode, the charging mosfet is disconnected

5.6.3 Discharge mode

The BMS enters the discharge mode when it detects that the load is connected, the cell voltage and temperature are within the dischargeable range, and the discharge current reaches the effective discharge current

5.7 Standby mode

When the above two modes are not satisfied, enter the standby mode.

5.8 Sleep mode

After the specified time of normal standby, the battery triggers under-voltage protection, executes a button shutdown or the host computer executes a shutdown command, the BMS enters the sleep (shutdown) mode.

5.9 Button Function“RESET”

When the BMS is in the sleep state, Hold down the key for 3~6S and release it, the BMS board is activated, and the LED indicator ON 0.5s successively from "RUN".

When the BMS is in the active state, hold down the key 3~6S and release it, the BMS board will in sleep, and the LED indicator light will on 0.5 seconds successively from " Minimum Power ".

When the BMS is in the active state, hold down the key 3~6S and release it, the BMS board will in reset, and All LED indicator light will on 1.5 seconds.

5.10 Sleep / wake function

5.10.1 Sleep

When any of the following conditions are met, the system enters the low power consumption mode:

1）Over discharging protection of the cell or the total voltage has not been released within 30 seconds

2）Press the button for 3-6S seconds and release the button.

3）Sleep is forced by computer or north software.

4）When the voltage of the unit is lower than the sleep voltage and there is no communication and no current, it will sleep automatically for 24 hours. (sleep voltage and time can be configured by upper computer

5.10.2 Wake Up

When the system is in the low power consumption mode and any of the following conditions are met, the system will exit the low power consumption mode and enter the normal operation mode:

1）Connect the charger, and the output voltage of the charger shall be greater than 48V.

2）Press the button 3S and release it. (when the minimum cell voltage is between 2.5V and 2.65V, the over discharge protection can wake up for 1 minutes with reset button)

5.11 Communication Function

RS485 interface implementation for communication with PC or other intelligent terminals

5.12 RS485 Communication port

The BMS provides two RJ45 communications ports. The two interfaces are physically one serial port, which are connected in BMS board. Each BMS is connected by 8-core direct connection network cable conforming to T568b standard.

5.13  CAN Communication port

CAN interface communicate with Inverter.Upload battery status and fault information, accept inverter commands.

Port introduction

6.Set basic BMS parameters BMS

6.1Status indication

Capacity indication

6.2 Data storage function

The battery system has sufficient data storage space to record battery status information,

statistical information and Alarm information, etc., to facilitate historical record query and

troubleshooting.

6.3 System upgrade function

The battery system can realize the online upgrade of the system software through the serial port,

which can realize the expansion of subsequent functions.

7.Using Methods

7.1 Battery system power up

Under normal circumstances, the circuit breaker on the device panel is in the closed state. The following is when

the circuit breaker is closed and the device is turned on, and the circuit breaker is switched from open to closed,

press the BMS switch，the device is directly activated.

(1) Make sure all wiring connections of the system are complete and correct；

(2) All switches between the battery system and the inverter must be closed;

(3)Start battery system: Press the ON/OFF 1~2S on the BMS ( or Reconnect the activation line ) , the indicator light of the BMS will light up, and the system will be activated.

7.2 Power off the battery system

Before stopping the system, power off the system according to the following order：AC Load=>PV=>Inverter=>Battery

Turn off the battery: Open the circuit breaker between the battery and the inverter, then press the ON/OFF on the Battery.

Notes:After stopping the system, please check below items, Confirm all the batteries are powered OFF; All the LEDs are OFF; Inverter has been powered off.

8.Installation and Maintenance Precautions

8.1 Installation Precautions

（1）Unpack and check the number of accessories and battery appearance before ins

（2）Install mounting ears and handles, and use a multimeter to measure the battery voltage. Generally, the factory battery voltage is between 47V-51V;

（3）Check the positive and negative terminals of the battery before wiring. It is strictly prohibited to reverse the positive and negative terminals when installing the battery;

（4）Please wear protective gloves during the battery connection process. When using metal tools such as torque wrenches, please insulate the metal tools to avoid the two ends of the metal tools such as torque wrench from touching the positive and negative terminals of the battery at the same time, causing a short circuit;

（5）Before connecting with the external device, make the device disconnected, and double check the polarity and total voltage of the battery. Then connect the positive terminal of the battery to the positive terminal of the device, and the negative terminal of the battery to the negative terminal of the device. And fasten the connection cable;

（6）The battery must be handled lightly during handling and placement . It is forbidden to drop, impact, and toss or knock the battery, so as not to damage the battery or cause safety hazards;

（7）It is forbidden to use the sharp parts of the tool to contact the surface of the battery box, scratch or damage the battery box;

（8）It is prohibited to disassemble the battery box without permission;

（9）It is forbidden to put any metal or conductive material together with the battery into the battery box;

(10) Integrated indoor and outdoor cabinet (box) installation; install according to customized installation specifications of integrated cabinet (box).

8.2 Maintenance Precautions

Our lithium iron phosphate battery products have the advantages of low self-discharge rate, long service life, high reliability, and maintenance-free. The integrated intelligent BMS battery management system replaces the manual detection link and automatically detects the cell voltage、 total voltage and current, etc., prevent the occurrence of overcharge and over discharge, which greatly reduces the failure rate of the battery pack. BMS has a high-efficiency battery balance management technology, which greatly improves the consistency of the battery cell, maximizes the performance of the battery and extends the service life.

A simple maintenance and inspection of the product is sufficient during use. The recommended maintenance period: once every 3 months.

Check whether the poles and connecting wires of the LFP battery are loose, damaged, deformed or corroded, and whether the battery case is damaged or deformed;

Observe the status of the battery pack operation indicator. Under normal conditions, the green light is on. When the last one of the battery SOC light flashes, it indicates that the battery power is low, and the battery is about to discharge and shut down;

If there is a fault, the ALM red light of the battery pack flashes and an alarm is issued. Please check whether the battery connection is correct or whether there is an over-current condition; then press the RST reset button, and the battery restarts to see whether the fault is eliminated. If it cannot be eliminated, please contact the manufacturer. Do not open the battery pack box without authorization;

For the application scenario of multiple batteries in parallel, if one of the batteries fails and needs to be replaced, please ensure that the voltage difference between the voltage of the newly replaced battery and the other batteries in parallel is within 2V. If the pressure difference is larger, A battery pack with a voltage ramp will charge a low-voltage battery pack with a large current, and a low-voltage battery pack will be charged with over current protection, making it impossible to charge；

Record the time and number of power outages and make detailed statistics on the power supply time of the battery.

9.Package

The lithium iron phosphate battery equipment is packaged as a whole to ensure that the product is free from any harmful gas, chemical pollution, static electricity, humidity and mechanical damage during handling, transportation, and storage.

10.Transport

The following aspects should be paid attention to during the transportation of this product:

（1）Handle with care to avoid severe vibration of the equipment;

（2）It is forbidden to turn the battery upside down, roll over, drop, or hit the battery to avoid damage to the appearance of the battery;

（3）The battery should avoid exposure to the sun and rain, and it is forbidden to submerge the battery as a whole in the water；

（4）Illegal unpacking and short-circuiting of equipment is prohibited.

11. Storage

（1）The external terminals of the battery pack are in an insulated state;

（2）Do not place or store the battery for a long time at a high temperature of 60 degrees, otherwise it will cause functional degradation and shorten the service life;

（3）Disposal of batteries should follow local regulations.