Quick Specifications
| Model | JK-PB2A16S-20P |
|---|---|
| Dimensions | 300 x 100 x 24 mm |
| Material | Aluminum Alloy Heat Sink & PCB |
| Balance | 2A Active Equalization (Energy Transfer) |
| Cont. Current | 200A |
| Peak Current | 400A |
| Strings | 7-16S (Ternary), 8-16S (LiFePO4), 14-16S (Lithium Titanate) |
| Accessories | Interface Board (JK-CN-Link), Sampling Wires, Activation Switch, RJ45 Cable, Dry Contact Terminal, Heating Wire |
| Application Scenarios | Commercial micro-grids, Heavy-duty off-grid solar, Large-scale industrial storage |
Product Video
Product Overview
The JK-PB2A16S-20P stands at the pinnacle of the Jikong Energy Storage Series, engineered exclusively for uncompromising commercial, industrial, and heavy-duty off-grid power applications. As the flagship model, it delivers a massive 200A continuous charge and discharge current, alongside an extraordinary 400A peak instantaneous current capacity. This intelligent Battery Management System ensures absolute stability for large-capacity lithium battery packs under the most grueling electrical loads.
Boasting an ultra-low internal circuit resistance of just 0.35 mΩ, the JK-PB2A16S-20P virtually eliminates thermal throttling, maximizing energy efficiency for high-power inverters and large-scale solar power stations. Coupled with a powerful 2A energy transfer active balancing technology and extensive communication protocols, it is the definitive solution for modern commercial micro-grids and heavy-duty energy storage systems.
Core Industrial Advantages
To support the massive scale of commercial energy storage, the JK-PB2A16S-20P is packed with specialized hardware features designed to maximize battery life, safety, and scalability.
Unrivaled 200A Power Handling
At the heart of the JK-PB2A16S-20P is a highly optimized power module featuring a maximum internal loop resistance of merely 0.35 mΩ. This ultra-low resistance allows the BMS to sustain a 200A continuous current and a 400A peak current without generating excessive heat. This makes it perfectly suited for demanding applications like multi-megawatt commercial battery banks and heavy-duty motor startups.
2A High-Speed Active Balancing
Maintaining cell consistency in large-capacity packs is paramount. The protection board relies on proprietary energy transfer active balancing technology with independent intellectual property rights. It seamlessly transfers energy from high-voltage cells to low-voltage cells with a maximum continuous balance current of 2A. This high-current active equalization ensures consistency to the greatest extent, dramatically improving the battery range and delaying aging.
Unlimited Scalability with Parallel Limiting
Commercial energy needs often require connecting multiple massive battery packs. The JK-PB2A16S-20P features a built-in battery parallel current limiting function. When parallel packs have varying voltages, the system automatically activates the current limiting circuit, keeping the cross-charging current safely capped at approximately 10A. This critical feature allows up to 16 BMS units to be safely connected in parallel.
Advanced System Integrations
Seamless communication and external control are vital for integrating lithium batteries into complex industrial power grids.
Dual RS485 & CAN Protocols
The protection board is equipped with comprehensive CAN and dual RS485 communication ports.
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Inverter Communication: The CAN (default 250K rate) and RS485-1 interfaces are strictly dedicated to communicating with external inverters. Users can select the matching protocol for their specific inverter brand directly through the JK BMS APP.
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Parallel & PC Monitoring: The RS485-2 port (default 115200 baud rate) is utilized for parallel battery connections and syncing with the host computer software.
Intelligent Dry Contacts & External Control
To automate facility safety protocols, the board includes 2 standard dry contact interfaces (COM1/S1 and COM2/S2). When the BMS detects critical states—such as over-temperature or over-charge—the dry contacts can automatically trigger external cooling fans or facility alarm buzzers. Users can customize these trigger conditions based on their unique site requirements.
Ultimate Safety & Environmental Protection
Operating in harsh commercial environments requires a BMS that anticipates and neutralizes electrical and thermal threats before they affect the battery cells.
Precharge & Surge Prevention
Industrial inverters contain massive capacitors that can cause devastating inrush currents upon connection. The JK-PB2A16S-20P incorporates a discharge precharge function with a default duration of 5 seconds. This gradually charges the inverter capacitors before fully opening the main discharge circuit, eliminating spark risks and equipment damage.
Winter-Ready Heating Module
For outdoor solar stations or unheated industrial sites, the board supports a dedicated heating function with a 10A designed current limit. When battery temperatures drop below safe charging thresholds, the BMS activates external resistance heaters or heating films to warm the cells. Once the temperature reaches the safe threshold (e.g., controlled via a 45°C-65°C thermal switch), charging resumes.
Multi-Layered Electrical Shields
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Over/Under Voltage: Provides high-precision voltage acquisition (±3mV) to instantly detect single-cell overcharge or over-discharge events, cutting power to save the pack.
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Short Circuit & Overcurrent: Programmable discharge overcurrent delay and short circuit protection delay (default 5 microseconds) ensure immediate shutdown during catastrophic wiring faults.
Seamless Monitoring Ecosystem
External Interface Board (JK-CN-Link)
To facilitate easy monitoring without opening battery enclosures, the package includes the JK-CN-Link interface board. It provides:
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LED Status Indicators: Instantly display battery capacity, running status, and active alarms.
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DIP Switches: A 4-switch terminal allows engineers to manually set the communication address (0 to 15) for parallel networking.
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Activation/Reset: A physical button to wake up or reset the BMS during maintenance.
Jikong Mobile APP & PC Software
The integrated Bluetooth module connects instantly to the iOS/Android APP for field configuration, allowing engineers to view real-time coulomb meter calculations and tweak parameters. For control rooms, the RS485-to-USB connection empowers the Jikong Host Computer software to poll and monitor all 16 parallel battery packs simultaneously.
Frequently Asked Questions (FAQ)
Q1: What makes the 20P model different from the 15P model?
A: The JK-PB2A16S-20P is upgraded with a 200A continuous current capacity and a 400A peak threshold, compared to the 150A/300A limits of the 15P. It also features the lowest internal resistance in the series (0.35 mΩ), making it the superior choice for extremely heavy commercial loads.
Q2: Can I use this BMS for a 48V Lithium Titanate (LTO) battery bank?
A: Yes, the protection board fully supports 14 to 16 strings of Lithium Titanate (LTO) batteries, as well as 7-16S Ternary and 8-16S LiFePO4 configurations.
Q3: How do I set up the communication address for 4 batteries in parallel?
A: Using the included interface board’s DIP switches, set the first battery (Host) to Address 0 (all switches OFF). Set the remaining three batteries (Slaves) to Address 1, Address 2, and Address 3, respectively. Then, link them using RJ45 cables via the RS485-2 ports.
Q4: Does the BMS protect against extreme heat during 200A discharges?
A: Absolutely. It includes dual temperature probes and configurable Charge/Discharge Over-Temperature Protection (default trigger at 70°C). It also features independent MOS Over-Temperature Protection (trigger at 100°C), ensuring the internal hardware never overheats.