Project Description
Specification Confirmation Form
| Customer Name: | |||||
| Customer No.: | |||||
| Customer Part No.: | |||||
| Product Model | JK-PB2A16S-15P | ||||
| Version | V14.0 | ||||
| Date | |||||
|
Accessory List |
No. | Name | Model | Qty | |
| 1 | BMS Board |
JK-PB2A16S-15P |
1 | ||
| 2 | Display Screen |
LCD-3.2-RS485-V1.0 |
1 | ||
| 3 | Interface Board |
JK-CN-Link-V1.0 |
1 | ||
| 4 | B+ Wire |
GB+-3.5mm-25cm-16AWG |
1 | ||
| 5 | Screw |
M6*10 |
4 | ||
| 6 | Interface Adapter |
HY2.0-XH2.54-22AWG-30CM |
1 | ||
| 7 | Interface Adapter |
2XH2.54-22AWG-30CM |
1 | ||
| 8 | Interface Adapter |
IDC2.54mm-20P-30cm |
1 | ||
| 9 | Dry Joint Terminal |
WJ15EDGK-3.81-4P |
1 | ||
| 10 | RJ45 Cable |
CAT5E-8P 双绞-40cm |
1 | ||
| 11 | Sampling Wire |
HY2.0-7P-22AWG-90CM |
2 | ||
| 12 | Sampling Wire |
HY2.0-6P-22AWG-90CM |
2 | ||
| 13 | LCD Adapter |
GH1.25-6P-40CM |
1 | ||
| 14 | Heating Adapter |
HY2.0-5P-24AWG-15CM |
1 | ||
| JKBMS | 客户确认 | ||||
| Prepared by: | Reviewed by: | ||||
| Approved by: | Approved by: | ||||
Configuration Table
|
Function |
Log Storage | 1000 entries |
|
Charge Current Limit |
10A | |
| Definition: Charge current exceeds charge protection current to enable | ||
| Balancing Current | □0.4A □0.6A □1A 2A | |
| Max Current | □40A □80A □100A 150A □200A | |
| Display Screen | 3.2 inch color LCD | |
|
Dry Contact |
√ Yes □No | |
| Definition: Dry Contact 1-PIN1 to PIN2: NC, closed during fault or protection;
Dry Contact 2-PIN3 to PIN4: NC, closed for low voltage alarm |
||
| Heating Function | Definition: Enable heating when cell temperature is below -20°C during charging, stop heating at -10°C. (Configurable temperatures) | |
| Reverse Polarity Protection | ¨ Yes No | |
| Weak Switch | Yes □No | |
| Buzzer | Yes □No | |
| GPS | □Yes No | |
| Sampling Socket | Vertical | |
| DIP Switch | 4 bits, for RS485 communication address selection | |
| LED Indicator | □No ALM RUN OF/OFF SOC6 个 | |
| Current Detection Resistor | 10 pcs | |
| Cell Capacity | Configurable | |
| Barcode | QR Code | |
|
Communication |
Communication Interface | RS232 RS485 并联 RS485 CAN |
| Upgrade Method | RS232 RS485 | |
| Bluetooth | Connect via mobile APP | |
| Communication Protocol | ||
| Customer Requirements | ||
1、Overview
With the rapid growth of the renewable energy storage market, the demand for battery management systems is increasing. This product is an intelligent lithium battery protection board designed for energy storage applications. It adopts precise detection technology to realize protection against overcharge, over-discharge, over-current and other conditions of the energy storage batteries, ensuring safe and reliable operation of the energy storage system. It also integrates advanced active voltage balancing to monitor the voltage of each battery cell in real-time and improve battery life through active balancing management. The product provides intelligent battery protection solutions for a wide range of energy storage applications.
2、Features
- Active Balancing LED Status indicators
- APP remote operation Overvoltage/current protection
- PC host computer operation Information screen display
- Support RS485\CAN\RS232 communication
- High-precision voltage sampling capacity estimation
- High precision current sampling Precise time log recording
- Isolated power supply circuit Short circuit protection
- 4-channel temperature detection and protection MOS temperature detection and protection
3、Function Block Diagram
4、Operating Conditions
| Test Item | Parameter | Unit |
| Operating Temperature | -30~70 | °C |
| Storage Temperature | -30~70 | °C |
| Operating Humidity | 10~80 | %RH |
| Storage Humidity | 10~85 | %RH |
| Supply Voltage | 20~70 | V |
| Operating Power Consumption | 19mA@58V | |
| Standby Power Consumption | 200uA@58V |
5、Specification
| No. | Item | Default Parameters | Configurable | Remarks | |
|
1 |
Cell Number |
Support Battery Type |
Iron Lithium, Ternary Lithium, Lithium Titanate |
Configurable |
All parameters are for iron lithium |
| Supported Cell Number | 16 | Configurable | |||
| Balancing Trigger Voltage Difference | 10mV | Configurable | |||
|
2 |
Cell Overcharge Protection |
Overcharge Protection Voltage | 3600mV | Configurable | |
| Overcharge Recovery Voltage | 3550mV | Configurable | |||
|
3 |
Cell Undervoltage Protection |
Undervoltage Protection Voltage | 2600mV | Configurable | |
| Undervoltage Recovery Voltage | 2650mV | Configurable | |||
| Auto-Shutdown Undervoltage |
2500mV |
Configurable |
|||
|
4 |
Active Balancing |
Balancing Trigger Voltage Difference | 10mV | Configurable | |
| Balancing Start Voltage | 3000mV | Configurable | |||
| Max Balancing Current | 1A | Configurable | |||
|
5 |
Total Overcharge Protection |
Max Charge Current | 25A | Configurable | |
| Charge Overcurrent Delay | 2s | Configurable | |||
| Charge Overcurrent Release | 60s | Configurable | |||
| Charge Overcurrent Limit | 10A | Not Configurable | |||
|
6 |
Total Over-discharge Protection |
Max Discharge Current | 150A | Configurable | |
| Discharge Overcurrent Delay | 300s | Configurable | |||
| Discharge Overcurrent Release | 60s | Configurable | |||
|
7 |
Short Circuit Protection |
Short Circuit Protection Current | 550A | Not Configurable | |
| Short Circuit Protection Delay | 30us | Configurable | |||
| Short Circuit Protection Release | 60s | Configurable | |||
|
8 |
Temperature Protection |
Charge Over Temperature Protection | 70°C | Configurable | |
| Charge Over Temperature Recovery | 60°C | Configurable | |||
| Discharge Over Temperature Protection | 70°C | Configurable | |||
| Discharge Over Temperature Recovery | 60°C | Configurable | |||
| Charge Low Temperature Protection | -20°C | Configurable | |||
| Charge Low-Temperature Recovery | -10°C | Configurable | |||
| MOS Over Temperature Protection | 100°C | Configurable | |||
| MOS Over Temperature Recovery | 80°C | Configurable | |||
| Battery Warning Temperature | 60°C | Configurable | |||
| Battery Warning Recovery | 50°C | Configurable | |||
6、LED indicators
Led status indicators
| Status | Normal/Warning/Protection |
ON/OFF |
RUN |
ALM |
SOC Indicators LED | Indicators | |||||
| Power Off | Normal | OFF | OFF | OFF | OFF | OFF | OFF | OFF | OFF | OFF | |
| Balancing | Normal | ON | ON | OFF | Per SOC Per SOC | ||||||
|
Charging |
Normal | ON | ON | OFF | Per SOC Per SOC | ||||||
| Overcurrent/Over Temp/ Overvoltage/charge Fail |
ON |
ON |
Blinking |
Per SOC Per SOC |
|||||||
|
Discharging |
Normal | ON | ON | OFF | Per SOC Per SOC | ||||||
| Overcurrent/Over Temp/ Overvoltage/discharge Fail |
ON |
ON |
Blinking |
Per SOC Per SOC |
|||||||
|
Other Warnings |
Unmodified Password/Short Circuit/Abnormal Temp |
ON |
ON |
Blinking |
Per SOC Per SOC |
||||||
SOC indicators
| Status | Charging | Discharging | |||||||||||
| SOC LED | L6 | L5 | L4 | L3 | L2 | L1 | L6 | L5 | L4 | L3 | L2 | L1 | |
| SOC (%) | 0~16.6% | OFF | OFF | OFF | OFF | OFF | ON | OFF | OFF | OFF | OFF | OFF | ON |
| 16.6~33.2% | OFF | OFF | OFF | OFF | ON | ON | OFF | OFF | OFF | OFF | ON | ON | |
| 33.2~49.8% | OFF | OFF | OFF | ON | ON | ON | OFF | OFF | OFF | ON | ON | ON | |
| 49.8~66.4% | OFF | OFF | ON | ON | ON | ON | OFF | OFF | ON | ON | ON | ON | |
| 66.4~83.0% | OFF | ON | ON | ON | ON | ON | OFF | ON | ON | ON | ON | ON | |
| 83.0~100% | ON | ON | ON | ON | ON | ON | ON | ON | ON | ON | ON | ON | |
7、Power On/Off
Press the button to turn on/off. Press the button when powered off to turn on. Press and hold the button for 3s when powered on to turn off.
8、Communication
、RS232 communication
The BMS can communicate with host computer via RS232 interface to monitor battery information including voltage, current, temperature, status and production info. Default baud rate is 9600bps。
、CAN communication
Default CAN communication baud rate is 250k
、RS485 communication
There are two RS485 communication interfaces. One is paralleled out to two interfaces for monitoring battery group info. Default baud rate is 115200. The communication address can be set via DIP switch with address range 0~15 to poll data from all battery packs.
5
8、4 DIP Switch Setting
When multiple battery packs are connected in parallel, the address of each pack needs to be set differently via DIP switch for proper operation. The DIP switch address table is shown below.
| Address | DIP Switch Positions | |||
| 1 | 2 | 3 | 4 | |
| 0 | OFF | OFF | OFF | OFF |
| 1 | ON | OFF | OFF | OFF |
| 2 | OFF | ON | OFF | OFF |
| 3 | ON | ON | OFF | OFF |
| 4 | OFF | OFF | ON | OFF |
| 5 | ON | OFF | ON | OFF |
| 6 | OFF | ON | ON | OFF |
| 7 | ON | ON | ON | OFF |
| 8 | OFF | OFF | OFF | ON |
| 9 | ON | OFF | OFF | ON |
| 10 | OFF | ON | OFF | ON |
| 11 | ON | ON | OFF | ON |
| 12 | OFF | OFF | ON | ON |
| 13 | ON | OFF | ON | ON |
| 14 | OFF | ON | ON | ON |
| 15 | ON | ON | ON | ON |
9、Interface Definition
Dry Contact Interface
| Pin No. | Pin Definition | Notes |
| 1 | COM1 | Closed between S1 and COM1 for alarms |
| 2 | S1 | |
| 3 | COM2 | Closed between S2 and COM2 for low voltage alarm |
| 4 | S2 |
CAN and RS485-1 interface
| RS485- RJ45 Connector | CAN- RJ45 Connector | ||
| Pin No. | Pin Definition | Pin No. | Pin Definition |
| 1、8 | RS485- B1 | 9、10、11、14、16 | NC |
| 2、7 | RS485-A1 | 12 | CANL |
| 3、6 | GND | 13 | CANH |
| 4、5 | NC | 15 | GND |
RS232 interface
| RS232- RJ11 Connector | ||
| Pin No. | Pin Definition | Notes |
| 1、2、6 | NC | |
| 3 | RS232_TX | |
| 4 | RS232_RX | |
| 5 | GND | |
RS485-2 parallel interface
| RS485- RJ45 Connector | RS485- RJ45 Connector | ||
| Pin No. | Pin Definition | Pin No. | Pin Definition |
| 1、8 | RS485- B2 | 9、16 | RS485-B2 |
| 2、7 | RS485-A2 | 10、15 | RS485-A2 |
| 3、6 | GND | 11、14 | GND |
| 4、5 | NC | 12、13 | NC |
Battery interface
| Interface | Notes | |||
| BAT+ | Connects to total positive of battery pack, power supply to BMS | |||
| B- | Connects to total negative of battery pack | |||
| P- | Battery pack negative, also charge/discharge negative, combined charge/discharge port | |||
| Cell and Temperature | NT1 | Connect to NTC1 temperature sensor | NT3 | Connect to NTC3 temperature sensor |
| GND | Connect to NTC1 temperature sensor | GND | Connect to NTC3 temperature sensor | |
| B0 | Cell 1 negative | NC | NC | |
| B1 | Cell 1 positive | B9 | Cell 9 positive | |
| B2 | Cell 2 positive | B10 | Cell 10 positive | |
| B3 | Cell 3 positive | B11 | Cell 11 positive | |
| B4 | Cell 4 positive | B12 | Cell 12 positive | |
| NTC2 | Connect to NTC2 temperature sensor | B13 | Cell 13 positive | |
| GND | Connect to NTC2 temperature sensor | B14 | Cell 14 positive | |
| B5 | Cell 5 positive | B15 | Cell 15 positive | |
| B6 | Cell 6 positive | B16 | Cell 16 positive | |
| B7 | Cell 7 positive | |||
| B8 | Cell 8 positive | |||
10、Wiring Diagram
The protection board has strict power-on sequence requirements. Connect in order from low to high: B-, P-, B+, P+. After powering up, press button to activate. Connect all wires before connecting load or charger. To disconnect, first remove load and charger. Then disconnect cell sampling connectors in order from high to low, and finally remove B+, P+, B-, and P-.
11、Dimensional Drawing
Unit：mm
