Quick Specifications
| Model | JK-PB2A16S-30P |
|---|---|
| Dimensions | 300 x 100 x 24 mm |
| Material | Aluminum Alloy Heat Sink & PCB |
| Balance | 2A Active Equalization (Energy Transfer) |
| Cont. Current | 300A |
| Peak Current | 600A |
| 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, 6x Heavy-Duty M6 Screws |
| Application Scenarios | Grid-scale energy storage, Server farm backup power, Extreme industrial micro-grids |
Product Video
The JK-PB2A16S-30P represents the absolute pinnacle of Jikong’s Energy Storage Series, engineered explicitly for grid-scale energy arrays, mega-yachts, and extreme industrial micro-grids. As the ultimate flagship model, this intelligent Battery Management System (BMS) shatters previous limitations by delivering an astounding 300A maximum continuous charge and discharge current. For demanding motor startups and heavy capacitive loads, it handles an unprecedented 600A maximum instantaneous current.
Designed to safeguard massive lithium battery packs ranging from 7S to 16S, the JK-PB2A16S-30P integrates a powerful 2A active balancer, high-precision ±3mV voltage acquisition, and a sophisticated thermal management architecture. Whether deployed in a commercial server farm for critical backup power or in a megawatt-class solar power station, this BMS guarantees unmatched stability, efficiency, and longevity for your multi-tier lithium investments.
Unmatched Industrial Power Architecture
To safely manage hundreds of amperes of direct current, the internal engineering of the JK-PB2A16S-30P has been completely overhauled, focusing on thermal dissipation and resistance reduction.
300A Continuous & 600A Peak Performance
Standard BMS units fail under the stress of industrial inverters due to extreme heat buildup. The JK-PB2A16S-30P overcomes this with an industry-leading maximum internal loop resistance of just 0.25 mΩ. This ultra-low resistance allows the board to sustain a brutal 300A continuous output effortlessly. When large motors or transformers are activated, the board seamlessly absorbs up to 600A of peak transient current, preventing nuisance tripping and ensuring continuous facility operation.
Heavy-Duty Mechanical Integration
Weighing 1000g and measuring 300mm x 100mm x 24mm, the physical footprint is optimized for robust heat sinking. To ensure flawless electrical conductivity at 300A, the hardware accessory kit is upgraded to include 6 pieces of M6*10 heavy-duty screws, strictly designed to bolt thick copper busbars directly to the board’s massive terminals.
Advanced Active Balancing & Efficiency
Large battery packs are highly susceptible to capacity loss over time due to minor cellular imbalances. The JK-PB2A16S-30P resolves this with cutting-edge proprietary tech.
2A Energy Transfer Equalization
Unlike cheap passive balancers that simply burn off high-voltage energy as wasted heat, this protection board relies on advanced energy transfer active balancing technology with independent intellectual property rights. It actively siphons energy from the highest voltage cells and transfers it directly to the lowest voltage cells with a maximum continuous balance current of 2A. This dynamic equalization can ensure battery consistency to the greatest extent, drastically improve battery range, and delay battery aging, ultimately protecting your ROI on expensive lithium cells.
Grid-Scale Scalability & Parallel Systems
Commercial storage systems are rarely built from a single battery pack. The JK-PB2A16S-30P is hardwired to act as a foundational block for massive, multi-rack battery banks.
Built-In Parallel Current Limiting
When connecting 300A battery racks in parallel, even slight voltage differences can cause catastrophic cross-pack surge currents. The JK-PB2A16S-30P addresses this danger natively. It is equipped with a battery parallel current limiting function as standard. When severe charging overcurrent is detected during parallel connection, the current limiting circuit immediately activates, holding the cross-charge current constant at approximately 10A. This protects the cells until the packs equalize, safely supporting up to 16 BMS units in parallel.
CAN & Dual RS485 Communication
Interfacing with multi-megawatt hybrid inverters requires flawless data transmission.
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Inverter Sync: The board features CAN communication (default rate 250K) and RS485-1 for direct hardware-to-hardware handshakes with leading inverter brands.
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System Networking: The RS485-2 port (default 115200 baud rate) is utilized specifically to daisy-chain battery packs in parallel and connect to central PC host computers for deep-level monitoring.
External Interface Board (JK-CN-Link)
For user convenience inside deep server cabinets, the BMS includes a factory-standard JK-CN-Link interface board. This external panel provides immediate LED Bluetooth status indicators, a manual reset button, and a 4-pin DIP switch. By toggling the DIP switches, technicians can assign 16 distinct communication addresses (0 to 15) to each battery pack, establishing a clear master/slave hierarchy for the RS485 bus.
Comprehensive Fault Prevention & Safety
An extreme industrial BMS must act as a bulletproof firewall against electrical and environmental anomalies.
Discharge Precharge Technology
To protect sensitive electronics, the board features a standard discharge precharge function. With a default precharge time of 5 seconds, the BMS slowly charges the massive capacitors inside industrial inverters before opening the main 300A floodgates. This eliminates hazardous sparks and extends the lifespan of your entire power matrix.
Dual Dry Contacts for Automated Alarms
To integrate with facility alarm networks, the BMS is equipped with two standard dry contacts (COM1/S1 and COM2/S2). If the system detects critical states—such as over-temperature or cell overcharge—it automatically switches the dry contact status. This can trigger external sirens, activate emergency cooling fans, or shut down external chargers automatically, creating a fully automated fail-safe loop.
Extreme Climate Protection & Heating
Battery electrochemistry degrades in freezing temperatures. The JK-PB2A16S-30P includes a dedicated heating function interface (designed heating current 10A). In sub-zero environments, the BMS will block charging and instead route power to external resistance heaters or heating films. Paired with a 45°C-65°C normally closed temperature control switch as secondary protection, it safely thaws the battery core before normal operations resume. Furthermore, it features software-configurable low temperature protection during charge and discharge over temperature protection.
Software Ecosystem & Remote Management
Data is power. The JK-PB2A16S-30P offers seamless, real-time insights into your grid’s health.
Jikong Mobile APP & Bluetooth
The integrated Bluetooth module allows engineers to connect instantly via the iOS and Android compatible mobile APP. From a smartphone, users can monitor high-precision current acquisition, verify battery capacity calculations via the built-in coulomb meter, and review accurate time logging for fault diagnostics. The APP also acts as a remote control to manually operate charge and discharge switches, or toggle the intelligent sleep function.
Multi-Pack PC Host Monitoring
For comprehensive facility management, the BMS supports PC operations. By connecting the host battery (Address 0) to a control room PC via a USB to RS485 serial port cable, facility managers can execute upper polling to monitor all 16 parallel battery packs simultaneously. This provides a bird’s-eye view of every single cell’s voltage and temperature in the entire multi-megawatt array.
Frequently Asked Questions (FAQ)
Q1: Can the JK-PB2A16S-30P support Lithium Titanate (LTO) arrays?
A: Yes. The BMS is highly adaptable. Via the mobile APP, users can configure the board to support 7 to 16 strings of Ternary Lithium, 8 to 16 strings of LiFePO4, or 14 to 16 strings of Lithium Titanate (LTO) battery cells.
Q2: What happens if a massive short circuit occurs in the system?
A: The board features an ultra-fast short circuit protection function. By default, it triggers a shutdown in just 5 microseconds if a dead short is detected, with an automatic recovery check after 30 seconds. This prevents catastrophic fire risks.
Q3: How do I handle a critical battery shutdown while operating heavy machinery?
A: The BMS features a built-in Emergency Switch function. If the pack shuts down due to over-discharge or dropping cell voltages, an authorized user can trigger the emergency switch via the APP. This forces the BMS to open charge and discharge channels for exactly 30 minutes, allowing operators enough time to safely power down heavy machinery or reach a safe destination.
Q4: Why does the unit use an intelligent sleep mode?
A: To eliminate parasitic drain during long periods of inactivity, the intelligent sleep function automatically powers down the BMS if continuous charge/discharge currents remain below 1A for 26 hours. It can be instantly awakened by applying a charging voltage or pressing the reset button on the interface board.