Josma 48v Lifepo4 Battery Pack User Manual

48V LifePo4 Battery Pack

Product Information

Layout of Front Panel

Battery Specifications

Working Mode

3.1. Basic Mode

LED Indicator Description

Four green capacity indicators, one red alarm indicator, one
green operation indicator

SOC Capacity Indicator

Status Indicator

Flash Instruction of LED Indicators

Communication

With RS485 and CAN interface, which supports communicating with
multiple machines in parallel and with the upper computer. RS485
baud rate is 19200, CAN baud rate is 500K.

RS485 INTERFACE

8P8C RJ45 Pins Assignment (RS485)

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48V LiFePO4 BATTERY PACK
USER MANUAL

CONTENT

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1. Layout of Front Panel ——————————————————————— 1 2. Battery Specifications ——————————————————————— 2 3. Working Mode ————————————————————————— 3
3.1. Basic Mode ————————————————————————-3 3.2. Description of Buzzer —————————————————————-3 3.3. Description of Reset Button ———————————————————- 3 3.4. Dormancy and Activation ———————————————————— 3 4. LED Indicator Description ——————————————————————4 4.1. LED Indicator Description ———————————————————— 4 4.2. SOC Capacity Indicator ————————————————————– 4 4.3. Status Indicator ———————————————————————4 4.4. Flash Instruction of LED Indicators —————————————————- 4 5. Communication ————————————————————————– 5 6. Assignment of ID Addresses ————————————————————— 6 7. LCD Display Introduction —————————————————————— 7 7.1. Power-on screen ——————————————————————–7 7.2. Press “MENU” to enter the main menu ———————————————— 8 7.3. Dormancy and Activation Function ————————————————– 12 8. Upper Computer Software Introduction —————————————————- 13 9. List of Accessories ———————————————————————– 17

1. Layout of Front Panel

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NO.

Name

1

Positive Terminal

2

SOC

3

ALM

4

RUN

5

ADD

6

Negative Terminal

7

Power Switch

8

Reset

9

RS485*2/CAN*2

10

LCD Screen

Function Charge & Discharge Indicators For Capacity Indicator For Alarms Indicator For Running Status Dial Code Of Communication Charge & Discharge ON/OFF Switch Activate/Hibernate BMS Communication Interface Display Battery Information

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2. Battery Specifications

Nominal Parameters

Model No

LFP48100P

LFP48150P

Voltage

51.2 V

51.2 V

Capacity

100Ah

150Ah

Energy

5KWh

7KWh

Dimensions (L * W * H mm)

480*440*160

480*440*200

Weight (KG)

Approx 48

Approx 60

Built-in BMS

16S 100A

16S 200A

Electrical Parameters

Operation Voltage

51.2 VDC

51.2 VDC

Max. Charging Voltage

58.4 VDC

58.4 VDC

Cut-off Discharge Voltage

43.2 VDC

43.2 VDC

Max. Continous Charging and Discharging Current 100A

150A

Peak Discharge Current

150A (5s)

250A (5s)

Basic Parameters

Life Time(25°C)

10 years

Communication Method

RS485/CAN

Display Method and Language

LCD, English

Life Cycles (70% DOD, 25°C)

6000 times Cycles

Operating Temperature Range

-20~70

Operating Humidity Range

10%~85%

LFP48200P 51.2 V 200Ah 10KWh 480*440*255 Approx 85 16S 200A
51.2 VDC 58.4 VDC 43.2 VDC 200A 250A (5s)

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3. Working Mode
3.1. Basic Mode
3.1.1. Charging Mode The BMS turns on the charging MOSFET for charging when it detects an external charging voltage of 48V, and the cell voltage and temperature are within the chargeable range. When the charging current reaches the effective charging current, it enters the charging mode. Both charging and discharging MOSFETs are on in charge mode. 3.1.2. Discharging Mode The BMS enters the discharge mode when it detects that the load is connected and the cell voltage and temperature are within the dischargeable range and the discharge current reaches the effective discharge current. 3.1.3. Standby Mode When neither of the above two modes is met, it enters standby mode. 3.1.4. Hibernation Mode The BMS will enter sleep (shutdown) mode after a specific time of standby, or when the battery triggers undervoltage protection, or when the key is executed to shutdown or when the upper computer executes the shutdown command mode. The wake-up conditions of hibernation mode: 1. Make charging to activation; 2. Press the button to power on. 3.2. Description of Buzzer Buzzer function can be enabled or disabled via the upper computer, factory default is disabled. 3.3. Description of Reset Button When the BMS is dormant, press the button for 1S and then release it, the protection board will be activated and the LED will light up from “L4” for 0.5 seconds. When the BMS is active, press the button for 3S and then release it, the board will be dormant and the LED will light up from “RUN” for 0.5 seconds. 3.4. Dormancy and Activation
3.4.1. Dormancy The system will enter low-power mode when any of the following conditions are met. 1. Single cell undervoltage protection or overall undervoltage protection is not released within 30 minutes. 2. Press the button for 3 seconds and then release the button. 3. The minimum individual voltage is lower than the sleep setting voltage (default value 3150mV) and the duration reaches the sleep delay time (default value 1440 minutes), and there is no communication and no charging/discharging in meanwhile. 4. Forced shutdown via the upper computer software. Note: Before entering hibernation, make sure that no external voltage is connected to the P-terminus, otherwise it will not be able to enter the low-power mode. 3.4.2. Activation When the system is in low-power mode and any of the following conditions are met, the system will exit low-power mode and enter normal operation mode. 1. Connect to the charger, the charger output voltage should be greater than or equal to 48V. 2. Press the button for 1S, after releasing the button.
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4. LED Indicator Description

4.1. LED Indicator Description

Four green capacity indicators, one red alarm indicator, one green operation indicator

SOC

ALM

RUN

4.2. SOC Capacity Indicator

Status Capacity Indicator
025% 2550% 5075% 75100% Running Indicator

L1 OFF OFF OFF Flash 2

Charge

L2

L3

OFF

OFF

OFF

Flash 2

Flash 2

ON

ON

ON

ON

L4 Flash 2
ON ON ON

L1 OFF OFF OFF ON

Discharge

L2

L3

OFF

OFF

OFF

ON

ON

ON

ON

ON

Flash 3

L4 ON ON ON ON

4.3. Status Indicator

Status OFF Standby
Charge
Discharge

Warning/Normal
Normal Warning Normal Over Voltage Warning Over Current, Over Voltage and Temperature Warning Over Voltage Protection Over Current Protection Normal Warning Low Voltage Protection Protection of Overcurrent, Short Circuit, Temperature, Reverse Polarity etc

RUN ALM

OFF

OFF

Flash 1 OFF

Flash 1 Flash 2

ON

OFF

ON

OFF

SOC LED

ALL OFF

Mark

ON
Flash 1 ON
Flash 3 Flash 3 Flash 1

Flash 2
OFF OFF OFF Flash 2 Flash 2

ON as battery capacity indicates

OFF

ON

ALL OFF

4.4. Flash Instruction of LED Indicators
Flash 1 Flash 2 Flash 3

ON 0.25 S 0.5 S 0.5 S

OFF 3.75 S 0.5 S 1.5 S

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5. Communication
With RS485 and CAN interface, which supports communicating with multiple machines in parallel and with the upper computer. RS485 baud rate is 19200, CAN baud rate is 500K.

RS485 INTERFACE

8P8C RJ45 Pins Assignment (RS485)

Pins 13
7 26
4 5 8

Definition RS485_B RS485_A
GND CANH CANL
NC

The multi-unit parallel bus connections are shown in the following figure.

Instructions For Compatibility With Inverters

1. Compatible inverter brands list

Victron, Pylontech, Goodwe, Growatt, Voltronic, Deye, LXP, Sofar, GinLong, SMA, ,
Salocor If you can provide the communication protocol (a kind of code) of your inverter, we can customize the BMS to be compatible with your inverter, minimum order quantity for customzed is 50 pcs.

2. If your inverter not on our list above

Without communication protocol, inverter cannot communicate with our battery. You need to make some setting on your inverter, for example, select the user-defined mode and set the corresponding voltage level(according to the inverter user manual), so that they can work together without communication.

More questions about inverter communication, pls contact our customer service.
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6. Assignment of ID Addresses

When performing parallel communication operation of multiple machines, you need to configure the dialing address of each PACK first. When the BMS is configured for stand-alone operation, and the dialing address can be any address; when the BMS is configured for cascade operation mode, the slave dialing address is selected from 1 to 31, and the host dialing address is selected from 32 or 48 according to the inverter brand.

You can enter the address code of the master or slave battery in the system parameters of the upper computer to detect and communicate.

1

2

Code

3

4

5

6

ADD

PACK NO.

Remarks

ON

OFF

OFF

OFF

OFF

OFF

1

PACK 1

OFF

ON

OFF

OFF

OFF

OFF

2

PACK 2

ON

ON

OFF

OFF

OFF

OFF

3

PACK 3

OFF

OFF

ON

OFF

OFF

OFF

4

PACK 4

ON

OFF

ON

OFF

OFF

OFF

5

PACK 5

OFF

ON

ON

OFF

OFF

OFF

6

PACK 6

ON

ON

ON

OFF

OFF

OFF

7

PACK 7

OFF

OFF

OFF

ON

OFF

OFF

8

PACK 8

ON

OFF

OFF

ON

OFF

OFF

9

PACK 9

OFF

ON

OFF

ON

OFF

OFF

10

PACK 10

ON

ON

OFF

ON

OFF

OFF

11

PACK 11

OFF

OFF

ON

ON

OFF

OFF

12

PACK 12

ON

OFF

ON

ON

OFF

OFF

13

PACK 13

OFF

ON

ON

ON

OFF

OFF

14

PACK 14

ON

ON

ON

ON

OFF

OFF

15

PACK 15

OFF

OFF

OFF

OFF

ON

OFF

16

PACK 16

Slave Pack

ON

OFF

OFF

OFF

ON

OFF

17

PACK 17

OFF

ON

OFF

OFF

ON

OFF

18

PACK 18

ON

ON

OFF

OFF

ON

OFF

19

PACK 19

OFF

OFF

ON

OFF

ON

OFF

20

PACK 20

ON

OFF

ON

OFF

ON

OFF

21

PACK 21

OFF

ON

ON

OFF

ON

OFF

22

PACK 22

ON

ON

ON

OFF

ON

OFF

23

PACK 23

OFF

OFF

OFF

ON

ON

OFF

24

PACK 24

ON

OFF

OFF

ON

ON

OFF

25

PACK 25

OFF

ON

OFF

ON

ON

OFF

26

PACK 26

ON

ON

OFF

ON

ON

OFF

27

PACK 27

OFF

OFF

ON

ON

ON

OFF

28

PACK 28

ON

OFF

ON

ON

ON

OFF

29

PACK 29

OFF

ON

ON

ON

ON

OFF

30

PACK 30

ON

ON

ON

ON

ON

OFF

31

PACK 31

OFF

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

ON

ON

Master Pack: if your inverter is from other brands except 32
Victron, SMA and Growatt, the ADD of master pack is 32 PACK 32
Master Pack: if your inverter is from Victron, SMA or 48
Growatt, the ADD of master pack is 48

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7. LCD Display Introduction

7.1. Power-on screen

Button description:

MMMMMENU
ENTER ESC

MENUEnter the management system. ENTEREnter to the sub-menu. Move the cursor down or to next page. ESCReturn to the previous menu.

System Date Charging/Discharging Current Total Voltage Remaining Capacity Max. Voltage of Single Unit

SOH Environmental Temperature Max. Temperature of Battery Cell SOC Min. Voltage of Single Unit

Battery protection status Over Voltage: OV Low Voltage: LV Over Temp: OT Low Temp: LT Over Current: OC Short Circuit: SC
Note: When there is protection situation of the battery, there will show the corresponding protection status, otherwise, the protection status will not be showed.

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7.2. Press “MENU” to enter the main menu (Note: “” means there is a sub-menu, press “ENTER” to enter the sub-menu)
BMS Parameter Battery Status GYRO Status Version Number

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7.2.1. Move the cursor to “BMS Parameter” and press “Enter” to enter. Voltage Current Cell Temp Cell Volt

0.00V 0.0A

Move the cursor to “Cell Temp” and press “Enter” to check the battery temperature information, then press ” ” to turn the page.

Temp 01

xx

Temp 02

xx

Temp 03

xx

Temp 04

xx

MOS Temp

xx

Env Temp

xx

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Move the cursor to “Cell Volt” and press “Enter” to check the battery voltage information, then press “” to turn the page.

Cell 01

xxxxmV

Cell 02

xxxxmV

Cell 03

xxxxmV

Cell 04

xxxxmV

Cell 05

xxxxmV

Cell 06

xxxxmV

Cell 07

xxxxmV

Cell 08

xxxxmV

Cell 09

xxxxmV

Cell 10

xxxxmV

Cell 11

xxxxmV

Cell 12

xxxxmV

Cell 13

xxxxmV

Cell 14

xxxxmV

Cell 15

xxxxmV

Cell 16

xxxxmV

SOC

xx%

Nominal Capacity

0.0AH

Remain Capacity

0.0AH

BMS Cycles

0

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7.2.2. Move the cursor to “Battery Status” and press “Enter” to check the battery status information, then press “” to turn the page.

Status

IDLE/DISCHG/CHARGE/FULL

Alarm Status

Protect Status

Failure Alarm

Move the cursor to “Alarm Status” and press “Enter” to check the battery alarm information, then press “” to turn the page.

Over Volt

YES/NO

Low Volt

YES/NO

Over Temp

YES/NO

Low Temp

YES/NO

Low SOC

YES/NO

Diff Volt

YES/NO

Over Curr

YES/NO

Reverse

YES/NO

Move the cursor to “Protect Status” and press “Enter” to check the battery protection information, then press “” to turn the page.

Over Volt

YES/NO

Low Volt

YES/NO

Over Temp

YES/NO

Low Temp

YES/NO

Over Curr

YES/NO

Short Curr

YES/NO

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Move the cursor to “Failure Alarm” and press “Enter” to check the battery fault information, then press “” to turn the page.

Sample Line

N/Y

Charge MOS

N/Y

Dis CHG MOS

N/Y

Sample Chip

N/Y

SC Times

0

Over Temp CNT

0

Over Cur CNT

0

OVER Chg CNT

0

Over Dchg CNT

0

7.2.3. Move the cursor to “GYRO Status” and press Enter to check the gyroscope information, then press “” to turn the page. (Note: This gyroscope is optional)
Set X axis:

Place Option:

7.2.4. Move the cursor to “Version number” and press Enter to check the version information, then press “” to turn the page.

BMS Version

LCD Version

11

Move the cursor to “BMS Version” and press “Enter” to check the BMS version information. BMS SW Version

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BMS HW Version

Move the cursor to “LCD Version” and press “Enter” to check the LCD version information. LCD SW Version

LCD HW Version

7.3. Dormancy and Activation Function
After 1 minute of no button operation in normal running, the display screen will be off (only the backlight is off). Pressing any button while the screen is off will allow the screen light and operate normally.

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8. Upper Computer Software Introduction

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Enable the monitoring software, select the communication interface of the corresponding device, select the corresponding baud rate, and finally click “Open Serial Interface” to communicate with BMS and get the basic parameters.

You can switch the version in Chinese or English in help center

After the BMS communicates with the upper computer, you can monitor the basic parameters and status of the battery in real time. These information include battery voltage, current, SOC, SOH, cycle count, battery temperature, alarm status, protection status, etc.
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You can view the real-time data storage of the BMS and export as excel tables.
When monitoring multiple packs, you need to set the start and end address of packs manually, you can check and comparethe data of each pack. And you can also export as excel table.
Basic parameters 1. Click “Read All” when enter for the first time. This section includes reading basic parameter information, restoring default parameters, writing individual parameters, writing all parameters, importing parameters and exporting parameters (it is not recommended to manually modified default parameters).
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Basic parameters 2. Click “Read All” when enter for the first time. This section includes heating settings, other BMS parameter information, etc. (it is not recommended to manually modified default parameters).
System parameter setting. Click “Read All” when enter for the first time. You can monitor the BMS parameters configuration, sleep settings and BMS information in real-time(it is not recommended to manually modified default parameters).
Data calibration: Here is calibration content of BMS data (all has calibrated by factory, not recommended for private calibration).
Plug-in modules: Here will contains information about some additional functional modules.
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Normal remote control: Here includes the control of charging and discharging MOS, heating and other states (please consult the manufacturer for operation). Online upgrade: software online upgrade function of BMS (please consult the manufacturer for operation). System Parameters 1. Here includes some basic parameter information and dormancy settings.
Click “Read Data” to get real-time history data and export data, and view basic data information of battery packs.
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9. List of Accessories

NO.

ITEM

PICTURE

QTY

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Remarks

1

Battery Pack

1

2 Parallel Power Cable
Parallel 3 Communication Cable

For 48V 100AH: 6 gauge cable 0.3M + SC25-8 connector 2 For 48V 150AH/200AH: 4 gauge cable 0.4M + SC35-8 connector
1 RJ45 cable 0.5M

4

Upper computer Connecting Cable

1 RJ45 to USB cable 2M

5

Screws

4 M8

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