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GP-PC200B BMS Datasheet

Specification Confirmation​

Customer NameGobel Power
Customer Model
Customer Part Number
Product ModelP16S200A-ZL51706L20-K4-IOB
Version1.4
Date2025-11-10
Accessories ListNo.NameModelQuantity
1Protection BoardP16S200A-51706-1.41 pc
2Display BoardMD32K4-20666-3.01 pc
3Interface BoardIOB-31834B-1.01 pc
4ScrewsM5*10 Screws4 pcs
5Wiring TerminalKF2EDG-Y-3.81-4P-1G1 pc
6Wiring TerminalKF2EDG-Y-3.81-2P-1G1 pc
7Cable6P-300mm-6P-2.5X-1.11 pc
8Cable10P(2.0S)-300mm-10P(2.5X)-1.11 pc
9Cable10Px2-300mm-10Px2-2.5S-1.01 pc
10Cable420mm-2P-2.5S-R19A-1.11 pc
11Cable3.5P-245mm-tin-16AWG-1.01 pc
12Cable5P-500mm-5P-2.5X-1.11 pc
13Cable500mm-3P-3.81-tin-1.01 pc
14CableP16S200A-ZL51706-Sampling Cable 1-1.01 pc
15CableP16S200A-ZL51706-Sampling Cable 2-1.01 pc
16CableP16S200A-ZL51706-Sampling Cable 3-1.01 pc
17CableP16S200A-ZL51706-Sampling Cable 4-1.01 pc
18Cable3P-500mm-3P-2.5S-1.01 pc
PeiChengCustomer Confirmation
Prepared By:Wu YibingReviewed By:
Approved By:Lu JunxiongApproved By:

Document Change Summary​

DateVersionRevision DescriptionPrepared ByApproved By
2025-07-101.0Initial release.Wu YibingLu Junxiong
2025-07-141.1Software changes:
1. Added customer-provided Victor CAN protocol, data upload as required, set as default CAN protocol.		Wu YibingLu Junxiong
2025-09-091.2Hardware and software changes:
1. Removed onboard Bluetooth WiFi module, customer to use external WiFi module.		Wu YibingLu Junxiong
2025-10-151.3Software changes:
1. J75 interface 232 protocol modification;
2. Support for 63 battery units in parallel;
Accessories changes:
1. Sampling cable model changed, highlighted in yellow.		Wu YibingLu Junxiong
2025-11-101.4Software changes:
1. Active balancing logic adjustment;
2. Other requirement [17] modifications.		Wu YibingLu Junxiong

1. Introduction​

BMS (Battery Management System) is a system that monitors and controls battery status, enabling batteries to be used safely and for extended periods. Its main purpose is to intelligently manage and maintain each battery cell, monitor battery status, prevent overcharging and over-discharging, and extend battery lifespan. This product is suitable for residential energy storage batteries.

2. Features​

  • Equipped with 16-cell voltage and total voltage detection, overcharge, over-discharge alarm and protection functions. Static voltage sampling accuracy can reach ≤10mV at room temperature.
  • Equipped with charge and discharge current detection, charge and discharge overcurrent alarm and protection functions. Charging current displays as positive, discharge current displays as negative. Current sampling accuracy can reach ≤2%@FS at room temperature.
  • Reserved charge and discharge current detection, charge and discharge overcurrent alarm and protection functions. Charging current displays as positive, discharge current displays as negative. Current sampling accuracy can reach ≤2%@FS at room temperature.
  • Equipped with 4-channel cell temperature detection, cell high and low temperature alarm and protection functions. Temperature sampling accuracy can reach ≤2°C at room temperature.
  • Equipped with short circuit protection function.
  • Equipped with charge balancing function.
  • Supports cell capacity estimation function. Battery pack full charge capacity, current capacity, and design capacity can be set via host computer software. Capacity can be automatically updated after completing a full charge-discharge cycle.
  • Supports host computer software control function, allowing convenient setting of protection parameters such as overcharge, over-discharge, charge/discharge current, high temperature, low temperature, etc., as well as parameters like capacity, sleep, balancing, etc.
  • Equipped with RS232, RS485, CAN communication interfaces.
  • Supports multiple sleep and wake-up modes.
  • Equipped with reset switch, automatic encoding and other functions.
  • Equipped with LCD interface (optional), charge current limiting, buzzer, LED and other functions.
  • Supports online upgrade.

3. Functional Block Diagram (For reference only, subject to product)​

Image

4. Environmental Requirements​

ItemParameterUnit
Operating Temperature-20 /~ 60°C
Storage Temperature-20 /~ 75°C
Operating Humidity10 /~ 85%RH
Storage Humidity10 /~ 85%RH

5. Parameter Configuration​

5.1 Basic Parameter Settings​

No.Parameter ItemFactory DefaultConfigurableRemarks
1Cell Overcharge ProtectionCell Overcharge Alarm Voltage3600mVConfigurable
Cell Overcharge Protection Voltage3650mVConfigurable
Cell Overcharge Protection Delay1.0SConfigurable
Cell Overvoltage Protection ReleaseCell Overcharge Protection Release Voltage3400mVConfigurable
Capacity ReleaseSOC < 96%Configurable
Discharge ReleaseDischarge Current > 2A
2Cell Overdischarge ProtectionCell Overdischarge Alarm Voltage2600mVConfigurable
Cell Overdischarge Protection Voltage2500mVConfigurable
Cell Overdischarge Protection Delay1.0SConfigurable
Cell Overdischarge Protection ReleaseCell Overdischarge Protection Release Voltage2900mVConfigurable
Release on ChargingCan be activated by connecting charger
3Total Overcharge ProtectionTotal Overcharge Alarm Voltage56.5VConfigurable
Total Overcharge Protection Voltage58.4VConfigurable
Total Overcharge Protection Delay1.0SConfigurable
Total Overvoltage Protection ReleaseTotal Overcharge Protection Release Voltage54.4VConfigurable
Capacity ReleaseSOC < 96%Configurable
Discharge ReleaseDischarge Current > 2A
4Total Overdischarge ProtectionTotal Overdischarge Alarm Voltage44VConfigurable
Total Overdischarge Protection Voltage40VConfigurable
Total Overdischarge Protection Delay1.0SConfigurable
Total Overdischarge Protection ReleaseTotal Overdischarge Protection Release Voltage46.5VConfigurable
Release on ChargingCan be activated by connecting charger
5Charge Overcurrent ProtectionCharge Overcurrent Alarm Current145AConfigurableIf occurring 10 times consecutively, the state will be locked and cannot be automatically released
Charge Overcurrent Protection Current210AConfigurable
Charge Overcurrent Protection Delay1.0SConfigurable
Charge Overcurrent Protection ReleaseAuto ReleaseAuto release after 1min
Discharge ReleaseDischarge Current > 1A
6Discharge Overcurrent 1 ProtectionDischarge Overcurrent 1 Alarm Current155AConfigurableIf occurring 10 times consecutively, the state will be locked and cannot be automatically released
Discharge Overcurrent 1 Protection Current210AConfigurable
Discharge Overcurrent 1 Protection Delay1.0SConfigurable
Discharge Overcurrent 1 Protection ReleaseAuto ReleaseAuto release after 1min
Charge ReleaseCharge Current > 1A
7Discharge Overcurrent 2Discharge Overcurrent 2 Protection Current≥250AConfigurableIf occurring 10 times consecutively, the state will be locked and cannot be automatically released
Discharge Overcurrent 2 Protection Delay500mSConfigurable
Discharge Overcurrent 2 Protection ReleaseAuto ReleaseAuto release after 1min
Charge ReleaseCharge Current > 1A
8Short Circuit ProtectionShort Circuit Protection FunctionYes (Enabled by default)If occurring 10 times consecutively, the state will be locked and cannot be automatically released
Short Circuit Protection ReleaseShort circuit protection releases when charging is present
Automatically releases after load removal
9MOS High Temperature ProtectionMOS Overtemperature Alarm Temperature90°CConfigurable
MOS Overtemperature Protection Temperature115°CConfigurable
MOS Protection Release Temperature85°CConfigurable
10Cell Temperature ProtectionCharge Low Temperature Alarm Temperature5°CConfigurable
Charge Low Temperature Protection Temperature0°CConfigurable
Charge Low Temperature Protection Release Temperature10°CConfigurable
Charge High Temperature Alarm Temperature50°CConfigurable
Charge High Temperature Protection Temperature55°CConfigurable
Charge High Temperature Protection Release Temperature50°CConfigurable
Discharge Low Temperature Alarm Temperature-15°CConfigurable
Discharge Low Temperature Protection Temperature-20°CConfigurable
Discharge Low Temperature Protection Release Temperature-15°CConfigurable
Discharge High Temperature Alarm Temperature50°CConfigurable
Discharge High Temperature Protection Temperature55°CConfigurable
Discharge High Temperature Protection Release Temperature50°CConfigurable
11Ambient Temperature AlarmAmbient Low Temperature Alarm Temperature-20°CConfigurable
Ambient Low Temperature Protection Temperature-30°CConfigurable
Ambient Low Temperature Protection Release Temperature-20°CConfigurable
Ambient High Temperature Alarm Temperature55°CConfigurable
Ambient High Temperature Protection Temperature65°CConfigurable
Ambient High Temperature Protection Release Temperature55°CConfigurable
12Consumption CurrentOperating Self-consumption Current≤45mA
Low Power Mode Current≤200μA
13Balancing FunctionBalancing Start Voltage> 3400mVConfigurable
Start Voltage Difference> 30mVConfigurable
14Default Capacity SettingsLow Battery Alarm ThresholdSOC < 5%ConfigurableNo alarm during charging
15Sleep FunctionSleep Voltage< 3150mVConfigurable
Delay Time5minConfigurable
16Cell Failure ProtectionCell Voltage Difference> 1V ProtectionNot ConfigurableCharging and discharging not allowed
17Full Charge DetectionFull Charge Voltage≥ 55.2VConfigurableUpdate SOC to 100%
Cutoff Current≤ 5AConfigurable

Note: The above parameter settings are standard settings at 25°C ambient temperature. Performance may vary at different temperatures.

5.2 Basic Configuration​

FunctionStorage□None □Store 400 □Store 10000 ☑Store 10000
Battery Capacity□50AH □100AH □150AH □200AH ☑280 AH
Display Interface□None □Chinese Smart □English Smart ☑Yes
Charging Current Limit□None □5A □10A ☑20A □ A
Definition: Charging current > 200A to start
Dry Contact□None ☑Yes
Definition: Dry Contact 1-PIN1 to PIN2 normally open, closes during fault protection;
Dry Contact 2-PIN3 to PIN4 normally open, closes on battery low alarm.
Heating Film Interface□None ☑Yes (Heating film socket not soldered, customer purchases connector and solders it themselves, other hardware circuits retained)
Definition: Heating enable temperature (charging low temperature alarm temperature +1), heating film close temperature linked to charging low temperature protection release temperature. When BMS enters charging low temperature protection state, charging MOS is closed, heating film requests charging current of 10A (separate from Desay requested charging current); In parallel system, if any battery enters charging low temperature protection state, heating film requests charging current of 10A * number of charging low temperature protection states; Modifiable via上位机.
CAN Parallel☑None □Yes
Definition:
Fan Interface□None ☑Yes
Definition: 1. After charging MOS is closed, if charging current is detected for 8 consecutive seconds, start.
2. After discharge MOS is closed, if discharge current is detected for 8 consecutive seconds, start.
Certification Function Interface☑MCU boot watch dog ☑Dual total voltage detection ☑Dual current detection
Low Voltage Switch□None ☑Yes
Buzzer□None ☑Yes
Positioning Function Interface☑None □Yes
Bluetooth&WIFI☑None □Yes
Light Bar Interface□None ☑Yes
CommunicationDIP Switch□None □1-bit □4-bit ☑6-bit ☑Auto encoding
LED Indicator□None □ALM ☑RUN ☑ON/OFF ☑SOC 6 pcs
Sampling Socket☑Vertical □Horizontal
Other RequirementsBarcode□1D Barcode ☑2D Barcode (QR Code)
Communication Interface☑RS232 □RS485 ☑Parallel RS485 ☑CAN
Parallel Method□None □RS485 □CAN
Upgrade Method☑RS232 □RS485
1Auto encoding must support host waking up slaves, and slaves can automatically wake up after being woken by host.
2Choose one of LED indicator and strip light illumination logic.
3Choose one of manual encoding and auto encoding logic.
4Active balance supports maximum 2A.
5New customer-provided MAP table, see attachment;
Table values are coefficients (unit: micro-ohm);
Single unit:
Requested charging current = Table function X2X charging overcurrent warning value;
6Requested discharge current = Table coefficient X Discharge overcurrent 1 warning value;
Parallel system:
Check requested current for each unit separately, then take the minimum current and multiply by (parallel number - protection number).
7Inverter protocol:
RS485: Peng Hui
CAN: Schneider, Victor, DeYe, SMA, Tenega Innovation, Micle, RuiDi, SorEnd, TBB, Megare
8Add heating film function:
Definition: Heating enable temperature linked to (charging low temperature alarm temperature +1), heating film close temperature linked to charging low temperature protection release temperature, modifiable via上位机.
9Heating film socket on main board not soldered (customer purchases connector and solders it themselves).
10BMS must support screen communication protocol function.
11Read parallel system total current changed to "Read parallel system total voltage - 0.5V", requested charging voltage = highest single unit voltage.
121. In 010-Victron CAN 2021.01.07(Victor) protocol, when balance is enabled, cancel the positive deviation report uploaded by BMS to inverter.
2. In 001-PYLON CAN Inverter EMS(Pylon) protocol, modify mask bits 1 and 2 range: Mask bit 1 Bit5 is charging alarm value - low battery alarm value +2%; Force bit 2 Bit4 is low battery alarm value +1% - low battery alarm value +3%; Flow charging off, low battery alarm value -10%.
13BMS enables self-consumption when not in sleep state, disables when in sleep state, power consumption is 7W.
14232 baud rate changed to 115200.
15Support multiple bidirectional meters, see上位机 protocol selection interface for details.
16Import A-Wei standard SOC algorithm.
17Request logic:
1. Only when conditions are met for the first time and triggered for one hour, if SOC is greater than intermittent charging threshold, request "low request voltage" from inverter; in other normal cases, request "normal request voltage" from inverter.
2. Intermittent charging threshold: Gap Charge Threshold value, default 95 (configurable).
3. Low request voltage: Take total rest protection recovery value (Pack OVP Release) value (configurable).
4. Normal request voltage: Take battery pack end-of-charge voltage (Pack FullCharge Voltage) value (configurable).
Purpose:
1. When battery SOC is below a certain value (TSOC), request maximum discharge current = -10 from inverter.
2. When battery voltage is below a certain value (PACK_UV_ALARM), request maximum discharge current = 0 from inverter.

Definition:
SOC: Current battery SOC (take average SOC of all packs).
VOL: Current battery voltage (take average voltage of all packs).
SOC_LOW_ALARM: SOC Low Alarm low battery alarm (%) value in software settings (take host setting value).
PACK_UV_ALARM: Pack UV Alarm total over-discharge alarm (V) value in software settings (take host setting value).
TSOC: A variable.
TSOC_STATE: Indicates whether currently requesting maximum discharge current = -10 from inverter due to low battery, default 0.
TVOL_STATE: Indicates whether currently requesting maximum discharge current = 0 from inverter due to low voltage, default 0.
Reference maximum discharge current: DCG_OC_ALARM discharge overcurrent alarm (A) value in software settings (MAP coefficient, requests maximum discharge current from inverter.
18TSOC value:
1. When SOC_LOW_ALARM ≤ 5%, TSOC fixed at SOC_LOW_ALARM (purpose is to leave a margin, thus not using TSOC dynamic change logic).
2. When SOC_LOW_ALARM > 5%, TSOC value changes.

TSOC value changes:
1. If battery does not trigger discharge condition for 4 consecutive days:
At 96 hours and above, raise TSOC to 50%.
At 192 hours and above, raise TSOC to 70%.
2. Once discharge condition is triggered, TSOC resets to SOC_LOW_ALARM.

Request maximum discharge current from inverter:
1. If SOC < TSOC, set TSOC_STATE = 1.
2. If VOL < PACK_UV_ALARM, set TVOL_STATE = 1.
3. If TVOL_STATE = 1, request maximum discharge current = 0 from inverter.
4. If TVOL_STATE = 0 and TSOC_STATE = 1, request maximum discharge current = -10 from inverter.
Exit request maximum discharge current from inverter:
1. If SOC > TSOC + 20%, set TSOC_STATE = 0.
2. If VOL > PACK_UV_ALARM + 3V, set TVOL_STATE = 0.
3. If TSOC_STATE = 0 and TVOL_STATE = 0, request maximum discharge current = reference maximum discharge current from inverter.
19In parallel system, report average total battery voltage to inverter.
20Excluding onboard Bluetooth WIFI module, J75 external Bluetooth WIFI interface needs to retain circuit and socket, customer provides external WIFI module.
J75-External Bluetooth WIFI interface uses 232 protocol, baud rate 115200.
21Support 63 batteries in parallel.
22New customer-provided universal multi-CAN protocol, corresponding internal protocol number: 010-Victron CAN 2023.09.22, set as default CAN protocol.
BMS upload data requirements:
0x35E upload: Gobel
0x370 upload: Gobel
0x371 upload: Power
0x360 report fill
0x378 report cumulative charge/discharge capacity
23J75-External Bluetooth WIFI interface serial 232 protocol modified:
Change normal response RTN = 0x00 to RTN = Cmd (Command received by BMS).
24Modify active balance strategy:
Balance enable changed from low voltage difference start to enable voltage (configurable via上位机), as shown below
a. Resting start condition: Gmax > Balance enable voltage value and voltage difference > 30mV.
b. Resting stop condition: Gmax < Balance enable voltage value or voltage difference < 20mV.
c. Charge/discharge start condition: Gmax > Balance enable voltage value and voltage difference > 50mV.
d. Charge/discharge stop condition: Gmax < Balance enable voltage value or voltage difference < 40mV.
e. Enable/disable voltage difference increases by 1mV every 500 cycles, maximum 20mV.
f. Operates for 1 hour after enable, after balance is disabled must wait 10 minutes before enabling again.
g. Battery temperature above 105 exits.
h. Average voltage greater than 3625mV does not start.
i. Voltage difference greater than 1000mV does not start.
j. High temperature alarm does not start.
k. Fault does not start.
l. Temperature/protection does not start.
m. Overvoltage protection can start, undervoltage protection does not start.
n. Remove logic that does not start when current is greater than 0.5C.
o. Current less than 2A is considered resting.
p. Check every 1 minute whether to start or continue balance.

6. Main Function Description​

6.1 LED Indicator Description (Note: When selecting LED lights, refer to the logic below; when selecting light bars, refer to the attachment)​

Table 1 LED Working Status Indicator

StatusNormal/Alarm/ProtectionON/OFFRUNALMCapacity Indicator LEDDescription
L6 ●L5 ●L4 ●L3 ●L2 ●L1 ●
Power OffSleepOffOffOffOffOffOffOffOffOffAll off
StandbyNormalOnFlash 1OffBased on capacity indicatorStandby state
AlarmOnFlash 1Flash 3Low voltage alarm
ChargingNormalOnOnOffBased on capacity indicator
(Highest capacity LED flashes 2 during charging)		Highest capacity LED flashes (Flash 2), ALM does not flash during overcharge alarm
AlarmOnOnFlash 3
Overcharge ProtectionOnOnOffOnOnOnOnOnOnIf no mains power, indicator changes to standby state
Temperature, Overcurrent, Failure ProtectionOnOffOnOffOffOffOffOffOffStop charging
DischargingNormalOnFlash 3OffBased on capacity indicator
AlarmOnFlash 3Flash 3
Undervoltage ProtectionOnOffOffOffOffOffOffOffOffStop discharging
Temperature, Overcurrent, Short Circuit, Failure ProtectionOnOffOnOffOffOffOffOffOffStop discharging
FailureOffOffOnOffOffOffOffOffOffStop charging and discharging

Table 2 Capacity Indicator Description

StatusChargingDischarging
Capacity Indicator LEDL6 ●L5 ●L4 ●L3 ●L2 ●L1 ●L6 ●L5 ●L4 ●L3 ●L2 ●L1 ●
Capacity (%)0% /~ 17%OffOffOffOffOffFlash 2OffOffOffOffOffOn
18% /~ 33%OffOffOffOffFlash 2OnOffOffOffOffOnOn
34% /~ 50%OffOffOffFlash 2OnOnOffOffOffOnOnOn
51% /~ 66%OffOffFlash 2OnOnOnOffOffOnOnOnOn
67% /~ 83%OffFlash 2OnOnOnOnOffOnOnOnOnOn
84% /~ 100%Flash 2OnOnOnOnOnOnOnOnOnOnOn
Running Indicator LED ●OnFlash (Flash 3)

Table 3 LED Flash Description

Flash ModeOnOff
Flash 10.25S3.75S
Flash 20.5S0.5S
Flash 30.5S1.5S

6.2 Buzzer Operation Description​

  1. In case of fault, buzz for 0.25S every 1S;
  2. In protection state, buzz for 0.25S every 2S (except for overvoltage protection);
  3. In alarm state, buzz for 0.25S every 3S (except for low voltage alarm);
  4. The buzzer function can be enabled or disabled via the upper computer (host computer). The factory default is disabled.

6.3 Button Operation​

When BMS is in sleep state, press the button (3/~6S) and release, the protection board is activated, and the LED indicator lights start from "RUN" and light up sequentially for 0.5 seconds each. When BMS is in active state, press the button (3/~6S) and release, the protection board enters sleep mode, and the LED indicator lights start from the lowest battery level and light up sequentially for 0.5 seconds each. When BMS is in active state, press the button (6/~10S) and release, the protection board is reset, and all LED lights light up simultaneously for 1.5 seconds. After BMS is reset, parameters and functions set via the upper computer (host computer) are still retained. If you need to restore to initial parameters, you can use the "Restore Default" function on the upper computer, but related operation records and stored data remain unchanged (such as battery level, cycle count, protection records, etc.).

6.4 Sleep and Wake-up​

Sleep​

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

  1. Single cell or total overdischarge protection is not released within 30 seconds.
  2. Press the button (3/~6S) and release.
  3. The minimum cell voltage is lower than the sleep voltage, and in the absence of communication, protection, balancing, current, or charging, the duration reaches the sleep delay time.
  4. Standby time exceeds 24 hours (no communication, no charge/discharge, no external power supply).
  5. Forced shutdown via upper computer software. Before entering sleep mode, ensure that no external voltage is applied to the input end, otherwise the system cannot enter low power mode.

Wake-up​

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

  1. Charger is connected, charger output voltage must be greater than 48V.
  2. Press the reset button (3/~6S) and release.
  3. RS232 communication is activated.

Note: When entering low power mode due to single cell or total overdischarge protection, the system wakes up regularly every 4 hours to turn on the charging MOS. If charging is possible, it will exit sleep state and enter normal charging; if it fails to charge after 10 consecutive automatic wake-ups, it will no longer wake up automatically.

6.5 Balance Condition Description​

a. Standby activation condition: Gmax > Balance activation voltage AND voltage difference > 30mV. b. Standby deactivation condition: Gmax < Balance activation voltage OR voltage difference < 20mV. c. Charge/Discharge activation condition: Gmax > Balance activation voltage AND voltage difference > 50mV. d. Charge/Discharge deactivation condition: Gmax < Balance activation voltage OR voltage difference < 40mV. Note: The balance activation voltage is bound to the passive balance activation voltage (configurable via upper computer).

7. Communication Description​

7.1 CAN Communication​

CAN communication, default baud rate 500K. This interface is used for communication with inverters. When the battery pack is the master, it can aggregate slave data for communication with inverters.

7.2 RS232 Communication​

BMS can communicate with the upper computer (host computer) via the RS232 interface, enabling monitoring of various battery information including battery voltage, current, temperature, status, and battery production information, etc. Default baud rate is 115200bps.

7.3 RS485 Communication​

Independent RS485 interface, default baud rate is 9600bps. This interface is used for communication with inverters. The monitoring device acts as the master and can aggregate slave data for communication with inverters.

7.4 Parallel RS485 Communication​

Parallel RS485 communication, default baud rate is 9600bps. If communication with the monitoring device via RS485 is required, the monitoring device acts as the master and polls data by address. The address setting range is 1/~15.

7.5 DIP Switch (Note: When manual encoding is selected, refer to the following logic)​

When PACK is used in parallel, the address can be set via the DIP switch on the BMS to distinguish different PACKs. Avoid setting the same address. Refer to the table below for BMS DIP switch definitions.

Image

AddressDIP Switch Position
#1#2#3#4#5#6
0OFFOFFOFFOFFOFFOFF
1ONOFFOFFOFFOFFOFF
2OFFONOFFOFFOFFOFF
3ONONOFFOFFOFFOFF
4OFFOFFONOFFOFFOFF
5ONOFFONOFFOFFOFF
6OFFONONOFFOFFOFF
7ONONONOFFOFFOFF
8OFFOFFOFFONOFFOFF
9ONOFFOFFONOFFOFF
10OFFONOFFONOFFOFF
11ONONOFFONOFFOFF
12OFFOFFONONOFFOFF
13ONOFFONONOFFOFF
14OFFONONONOFFOFF
15ONONONONOFFOFF
16OFFOFFOFFOFFONOFF
17ONOFFOFFOFFONOFF
18OFFONOFFOFFONOFF
19ONONOFFOFFONOFF
20OFFOFFONOFFONOFF
21ONOFFONOFFONOFF
22OFFONONOFFONOFF
23ONONONOFFONOFF
24OFFOFFOFFONONOFF
25ONOFFOFFONONOFF
26OFFONOFFONONOFF
27ONONOFFONONOFF
28OFFOFFONONONOFF
29ONOFFONONONOFF
30OFFONONONONOFF
31ONONONONONOFF
32OFFOFFOFFOFFOFFON
33ONOFFOFFOFFOFFON
34OFFONOFFOFFOFFON
35ONONOFFOFFOFFON
36OFFOFFONOFFOFFON
37ONOFFONOFFOFFON
38OFFONONOFFOFFON
39ONONONOFFOFFON
40OFFOFFOFFONOFFON
41ONOFFOFFONOFFON
42OFFONOFFONOFFON
43ONONOFFONOFFON
44OFFOFFONONOFFON
45ONOFFONONOFFON
46OFFONONONOFFON
47ONONONONOFFON
48OFFOFFOFFOFFONON
49ONOFFOFFOFFONON
50OFFONOFFOFFONON
51ONONOFFOFFONON
52OFFOFFONOFFONON
53ONOFFONOFFONON
54OFFONONOFFONON
55ONONONOFFONON
56OFFOFFOFFONONON
57ONOFFOFFONONON
58OFFONOFFONONON
59ONONOFFONONON
60OFFOFFONONONON
61ONOFFONONONON
62OFFONONONONON
63ONONONONONON

7.6 Parallel Auto-Encoding (When DIP switch is 0, auto-encoding is enabled by default)​

After the communication parallel wiring is connected and the system master is powered on, automatic encoding is performed (the master-slave power-on sequence does not matter, the master will continuously perform auto-encoding after power-on). If encoding fails, all indicator lights on the corresponding single unit will flash together.

8. Interface Description​

8.1 Communication Interface Diagram​

Interface Board Interface Diagram

CAN and RS485 InterfaceDry Contact
Parallel Communication PortRS232 Communication Interface

8.2 Interface Definition Description​

Interface board communication interface, pin definitions are as follows:

RS232 Communication Interface--Using 6P6C Vertical RJ11 Socket
RJ11 PinDefinition
2NC
3TX (Single Board)
4RX (Single Board)
5GND
CAN--Using 8P8C Vertical RJ45 SocketRS485--Using 8P8C Vertical RJ45 Socket
RJ45 PinDefinitionRJ45 PinDefinition
1, 7, 3, 6, 8NC9, 16RS485-B1
5CANL10, 15RS485-A1
4CANH11, 14GND
2GND12, 13NC
RS485--Using 8P8C Vertical RJ45 SocketRS485--Using 8P8C Vertical RJ45 Socket
RJ45 PinDefinitionRJ45 PinDefinition
1, 8RS485-B9, 16RS485-B
2, 7RS485-A10, 15RS485-A
3, 6GND11, 14GND
4GND13UP_IN
5DN_OP+12GND

Protection board interface, pin definitions are as follows:

1) Sampling Interface​

InterfaceDescription
B+Battery positive pole, used to supply power to BMS;
B-Battery negative pole;
P-Battery PACK negative pole (charge/discharge combined port);
Cell & TemperatureJA2-1BT12JA1-1BT16
JA2-2BT11JA1-2BT15
JA2-3BT10JA1-3BT14
JA2-4BT9JA1-4BT13
JA2-5BT8JA1-5GND
JA2-6GNDJA1-6NT4
JA2-7NT3
JA4-1BT4JA3-1BT8
JA4-2BT3JA3-2BT7
JA4-3BT2JA3-3BT6
JA4-4BT1JA3-4BT5
JA4-5BT0JA3-5GND
JA4-6GNDJA3-6NT2
JA4-7NT1
Note: Pin numbers are only for convenient ordering, please refer to the structural drawing for specific signal pins

2) External Interface​

InterfacePin NumberSignalDescriptionRemarks
J8
Interface Board Interface		Pin1:CANHCAN communication interfaceConnect to PCS communication
Pin2:CANL
Pin3:GND_CANGND_CAN
Pin4:GNDRS4851 communication interfaceConnect to PCS communication
Pin5:RS485A1
Pin6:RS485B1
Pin7:GNDProtection board negative pole
Pin8:GND
Pin9:lamp6Indicator light 6 positive pole50% LED
Pin10:K1DIP switch 1 positive pole
Pin11:lamp5Indicator light 5 positive pole66% LED
Pin12:K2DIP switch 2 positive pole
Pin13:lamp4Indicator light 4 positive pole83% LED
Pin14:K3DIP switch 3 positive pole
J7
Interface Board Interface		Pin15:lamp3Indicator light 3 positive pole100% LED
Pin16:K4DIP switch 4 positive pole
Pin17:lamp2Indicator light 2 positive poleALM LED
Pin18:PW_OFF1Low-power switch 1 positive pole
Pin19:lamp1Indicator light 1 positive poleRUN LED
Pin20:NRSTMReset button positive pole
Pin1:GNDProtection board negative pole
Pin2:K6DIP switch 6 positive poleNC
Pin3:K5DIP switch 5 positive poleNC
Pin4:lamp9Indicator light 9 positive poleON/OFF LED
Pin5:lamp8Indicator light 8 positive pole17%LED
Pin6:lamp7Indicator light 7 positive pole33% LED
Pin7:COM2Dry contact 2
Pin8:NO2
Pin9:COM1Dry contact 1
Pin10:NO1
J1
RS485 Communication		Pin1:GNDCommunication ground
Pin2:GNDCommunication ground
Pin3:RS232_TXRS232 communication signal
Pin4:RS232_RX
Pin5:RS485ARS485 communication signal
Pin6:RS485B
Note: Pin numbers are only for convenient ordering, please refer to the structural drawing for specific signal pins

3) Other Interfaces​

InterfacePin NumberSignalDescriptionRemarks
J5
GPS Board Interface (NC)		Pin1:GPRS_B+Battery positive pole (BMS has no control circuit)
Pin2:GNDGPS ground
Pin3:13V13V
Pin4:GPRS_TXGPS communication signal
Pin5:GPRS_RX
J9
Trip Unit		Pin1:B+Trip unit drive positive pole
Pin2:CON_ENTrip unit drive negative pole
Pin3:POS-REVTrip unit drive feedback
J10
Low-Power Switch		Pin1:GNDLow-power switch negative pole
Pin2:PW-OFF1Low-power switch detection signal
J11
Auto Coding		Pin1:UP_IN+Auto coding input signal
Pin2:GNDAuto coding ground
Pin3:DN_OP+Auto coding output signal
J12
Dual Current Detection		Pin1:DISLC+Dual current detection signal
Pin2:CHARC-
J13
Light Strip Communication		Pin1:GNDLight strip communication ground
Pin2:DOUTLight strip signal output
Pin3:5VLight strip power supply
J75
External Bluetooth WIFI Interface		Pin1:GNDGround
Pin2:5VExternal bluetooth-232 communication power supply
Pin3:RS232_TXExternal bluetooth-232 communication signal
P3
WIFI Interface		Pin4:RS232_RX
Pin1:GNDReserved: Ground
Pin2:WIFI_RSTReserved: WIFI network configuration button
JH1
Heating Film		Pin1:B+Heating film output positive pole
Pin2:P-Heating film output negative pole
JH2
Heating Film		Pin1:B+Heating film output positive pole
Pin2:P-Heating film output negative pole
Note: Pin numbers are only for convenient ordering, please refer to the structural drawing for specific signal pins

4) Screen Interface​

InterfacePin NumberSignalDescriptionRemarks
J6
5V Screen Communication		Pin1:GNDCommunication ground
Pin2:5VDisplay screen power supply
Pin3:LCD_RX1Display screen communication signal
Pin4:LCD_RT1
J2/J4
Display Screen Interface		Pin1:GNDReserved: GroundVertical/Horizontal optional
Pin2:GND
Pin3:13VReserved: Display screen power supply
Pin4:LCD_RX1Reserved: Display screen signal
Pin5:LCD_TX1
J3
Display Screen Interface		Pin1:GNDGround
Pin2:GND
Pin3:13VDisplay screen power supply
Pin4:LCD_RX1Display screen signal
Pin5:LCD_TX1
Note: Pin numbers are only for convenient ordering, please refer to the structural drawing for specific signal pins

8.3 Installation and Connection Instructions​

The protection board has strict sequence requirements. Connect B-, P-, B+, P+ in order, then insert the battery sampling cable connectors from low to high. Only after all cables are installed can the charger or load be connected.

When removing, first unplug the charger or load, then remove the battery sampling cable connectors from high to low in order, and finally remove B+, P+, B-, P-.

9. Physical Diagram and Dimensional Drawing​

1) Reference Physical Diagram (for reference only, subject to actual product)​

Protection Board​

Image

Image

Interface Board​

Image

  • Display Screen

Image

Image

9. Physical Diagram and Dimensional Drawing​

2) Protection Board Dimensional Drawing (for reference only, subject to structural drawing)​

Image

Image

3) Display Screen Dimensional Drawing (for reference only, subject to structural drawing)​

Image

Image

4) Interface Board Dimensional Drawing (for reference only, subject to structural drawing)​

Image

Image

10. Precautions for Use​

  • When soldering battery leads, there must be no wrong connection or reverse connection. If a mistake has been made, this circuit board may be damaged and must be re-tested and qualified before use.
  • During assembly, the protection board should not directly contact the cell surface to avoid damaging the cells. Assembly must be firm and reliable.
  • During use, be careful not to let wire ends, soldering irons, solder, etc. touch the components on the circuit board, otherwise the circuit board may be damaged.
  • Pay attention to static electricity, moisture, and water prevention during use.
  • During use, please follow the design parameters and usage conditions, and do not exceed the values in this specification, otherwise the protection board may be damaged.
  • After combining the battery pack and protection board, if no voltage output or inability to charge is found during initial power-on, please check if the wiring is correct.

11. Appendix​

11.1 Colorful LED Light On Logic​

Light Strip Distribution​

Run-LedAlarm-LedLed-10Led-09Led-08Led-07Led-06Led-05Led-04Led-03Led-02Led-01
RunAlarmSOC
100%90%80%70%60%50%40%30%20%10%

Light Purpose Classification​

The light board has 12 R-G-LED lights in total, each light can display multiple colors such as red, yellow, blue, and green. According to the purpose of the lights, they are divided into 3 major categories:

Status indicator light table

StatusLed1Led2Led3Led4Led5Led6Led7Led8Led9Led10ALMRUN
Power-on self-testLED colors light up in sequence, after all are lit they all turn off and switch to the next color, direction from left to right
Fault statusNormal SOC displayAlways onOff
Protection statusNormal SOC displayBlink 1SAlways on
Overvoltage off
Undervoltage protection status - all lights offOffOff
Alarm statusNormal SOC displayBlink 1s
Overvoltage off
Charging statusDisplay SOC, maximum SOC light to full charge SOC light flow-Blink 1S
Discharging statusDisplay SOC, maximum SOC light blinks, once every 2 seconds-Blink 1S
Idle statusDisplay SOC-Always on
Shutdown statusFlow from left to right in sequence, finally all off

11.2 MAP Table​

Continuous Charging Power Table/C Multiply all numbers below by 2, then multiply by the charging overcurrent alarm value to get the requested current

Ambient Temperature (°C)-20-100510152025303540455055
SOC:0%0 Cannot charge0.000.200.500.500.500.500.500.500.500.500.500.50
SOC:10%0.000.200.500.500.500.500.500.500.500.500.500.50
SOC:20%0.000.200.500.500.500.500.500.500.500.500.500.50
SOC:30%0.000.200.400.500.500.500.500.500.500.500.500.40
SOC:40%0.000.200.400.500.500.500.500.500.500.500.500.40
SOC:50%0.000.200.300.500.500.500.500.500.500.500.500.35
SOC:60%0.000.200.300.500.500.500.500.500.500.500.500.35
SOC:70%0.000.150.300.500.500.500.500.500.500.500.450.30
SOC:80%0.000.100.200.400.500.500.500.500.500.500.400.30
SOC:90%0.000.100.200.200.500.500.500.500.500.300.200.20
SOC:100%0.000.100.100.200.200.300.300.300.300.200.150.10

Continuous Discharge Power Table/C Multiply the value below by the discharge overcurrent alarm value to get the requested discharge current

Ambient Temperature (°C)-30-20-15-10-50510152025303540455055
SOC:0%Cannot discharge0.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.00
SOC:10%0.100.200.300.300.400.400.500.600.600.600.600.600.600.500.500.35
SOC:20%0.200.300.500.500.600.600.700.800.800.800.800.800.800.700.600.45
SOC:30%0.300.400.600.600.700.700.800.900.900.900.900.900.900.800.600.50
SOC:40%0.400.500.700.700.800.801.001.001.001.001.001.001.000.900.600.50
SOC:50%0.400.500.700.700.800.801.001.001.001.001.001.001.000.900.700.50
SOC:60%0.500.600.700.700.800.801.001.001.001.001.001.001.000.900.700.50
SOC:70%0.500.600.700.800.801.001.001.001.001.001.001.001.001.000.700.60
SOC:80%0.500.600.700.800.801.001.001.001.001.001.001.001.001.000.800.60
SOC:90%0.500.600.700.800.801.001.001.001.001.001.001.001.001.000.800.60
SOC:100%0.500.600.700.800.801.001.001.001.001.001.001.001.001.000.800.60
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