LionCore
Advanced Battery Management Systems
Product line 02
Master-Slave High Voltage Platform
LionCore Standard BMS is a modular master-slave product platform for 150-1000V battery systems. It combines a central BCU master controller with distributed BMU module monitors, giving high-voltage packs a clear architecture for measurement, protection, diagnostics and communication.
Standard BMS · High Voltage
A modular Master-Slave battery management system for high-voltage packs. One central unit, a scalable chain of monitoring modules, and functional safety built in from the ground up.
Architecture
A central Battery Control Unit commands a daisy chain of Battery Monitor Units — each watches one module, and the system scales by adding more modules.
Features
Layered safety, robust communication and full traceability — the things that matter when the voltage leaves no room for error.
The BCU carries a second MCU as an independent redundancy safety processor, in line with ISO 13849 — with a local safety MCU on every BMU.
Dedicated high-voltage measurement and insulation-fault detection guard against leakage to chassis across the whole pack.
Each module passes the isolated signal to the next, galvanically isolated to 1kV. Add a module, add a BMU — the chain grows.
All GPIO, supply rails and cell inputs are fused on both BCU and BMU. Configurable over/under voltage, temperature and latch protections.
Dual-range Hall current sensing integrates on the high side or low side to suit the system, accurate across the full current span.
Each BMU stores serial number, production data, usage history and fault records — supporting traceability under the latest EU battery regulations.
The BCU brings RS232 channels for Bluetooth and 4G modules plus dual isolated CAN-FD for the inverter or vehicle side — so the system links to the LionCore IoT cloud for live monitoring, logging and remote management, the same platform that connects the rest of our range.
Specifications
| Parameter | BCU (Master) | BMU (Slave) |
|---|---|---|
| Input voltage | 30–1200V DC | 10–75V DC (3S–18S) |
| Cells monitored | — | up to 18 series |
| Internal supply | 5V ±0.05V | 5V ±0.05V |
| Standby current | <5 mA | <5 mA |
| Inter-unit link | IsoSPI + CAN-FD | IsoSPI daisy chain |
| CAN default | 250 kbps · CAN 2.0B | — |
| Cell OV / UV | 4.3V / 2.5V (config.) | 4.2V detect |
| MTBF | ≥200,000 h | ≥200,000 h |
| Operating temp. | −20 to +85°C | −20 to +85°C |
| Cooling | Passive (no fans) | Passive (no fans) |
| Dimensions | 170 × 95 × 30 mm | 120 × 70 × 30 mm |
| Weight | <300 g | <200 g |
Interface
The same interface layer gives engineering teams live visibility into pack state, cell voltages, temperatures and fault events. It connects commissioning, service and remote analysis directly to the Standard BMS.
Contact
Share the application, voltage range, current requirements, communication interface and timeline. We will respond by email to discuss the right BMS path.