BMS KIT

For automotive-specific high voltage batteries
Scalable solution including hardware and software
SoC, SoH and SoF determination
For NMC, LFP and LTO cells
Current and high voltage sensors
Support for parallel batteries

The BMS kit provides an ideal basis for initial prototype constructions and small series. Together with the cell sensor circuit (HVX.csc), it maps all necessary battery management and safety functions. It represents a development basis for customized battery management systems on an industrial scale. Using the BMS tool chain, you can adapt the BMS precisely to your battery system.
Wiring topology, cell characteristics, temperature characteristics, discharge characteristics, limits and time characteristics of the safety functions and the interface to the vehicle can be adjusted within extensive ranges. The tool chain and the BMS together guarantee that the safety characteristics you specify are actually implemented. In addition to the key components of the BMS, we offer you a comprehensive selection of accessories right up to complete BMS kits. These include contactors, pre-charging modules, load resistances, filter assemblies and connector sets. The BMS facilitates the safe operation of lithium-ion batteries up to 800 V. It supports different ESS (Energy Storage System ) topologies - single-battery and multi-battery systems for larger plants and systems.

HVX.csc4

Cell voltage measurement
Cell temperature measurement
Cell balancing
Supplied through BMS and battery cells
10 mA current consumption @ Ucell = 4.2 V
1 x CAN 2.0 B
48 x cell voltage measurement inputs
16 x temperature sensor inputs (10 k NTC)

HVX.pmb

Current measurement up to 2000 A
Voltage measurement up to 800 V
Supplied through the BMS
No additional current consumption
1 x CAN 2.0 B
Shunt for current measurement
3 inputs for high voltage measurement

HVX.bms

Interlock signal generation and monitoring
Insulation monitoring
Adaptive pre-charging
Intelligent contactor control
Control of the battery cooling system
Power supply with 8 to 32 VDC
350 mA current consumption @ 12 V

CASE STUDIES

While we are proud of our products and solutions, it is through our customers’ applications that the power in the innovative technology is unleashed. Whether fully networked, highly automated, or operating fully autonomously, an effective mobile machine represents first class interdisciplinary engineering. Robust and safe integration into the system architecture of the machine and its work processes, while remaining convenient and user friendly, is the main focus. With thanks to our customers, here we would like to present a small selection of example applications.

FRAMO

Trucks with electric drives represent the future in commuter traffic and in inner city areas. Framo utilizes STW technology for the purpose.

KREISEL

Lithium-ion batteries have to be monitored intelligently, discharged and charged – just the right task for the BMS by STW.

VOLLERT

Electric drives for locomotives are nothing new – but diesel-electric drives represent an innovative approach.

STW USPs

We support our customers as a partner for the digitization and automation of mobile machines and the related work processes. Our comprehensive and highly interoperable STW modular system of high quality sensing, control and software products ensures a problem free integration in the final application.

As experts in all aspects of functional safety, we offer services in high level automation in the field of mobile machines, including autonomous functions and driving. Our STW ecosystem includes a comprehensive partner network of system integrators and distributors to ensure an optimal solution for every application, worldwide.