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 (STW.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.

STW.csc

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)

STW.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

STW.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

TECHNOLOGIES

Safety, reliability and conformity to standards represent essential values for our products. Therefore, we rely purely on high-quality and proven technologies to create solutions for your mobile machine.

CASE STUDIES

We are proud of our products and solutions, but they really reveal their true colors when used by our customers. Whether digitalized, automated or electrified – mobile machines repeatedly delight with new innovations, in particular in terms of their user-friendliness, reliability and ability to integrate into work processes. Thanks to our customers, we are delighted to present a small selection here.

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

Our objective is to support our customers in all aspects concerning the digitalization, automation and electrification of their mobile machines. We consider the entire machine lifecycle and develop our STW product and service portfolio in alignment with this lifecycle. The ECO system, an open and holistic approach, facilitates the cross-topic integration of STW solutions. Furthermore, our product approach facilitates functional expansion through partner offers and hybrid, integrated products based on our system module.

LIFECYCLE SUPPORT

TO LIFECYCLE SUPPORT