With WE-BMS, Würth Elektronik presents signal transformers for battery management systems which, due to their galvanic isolation of 4300 VDC/1 min and high operating voltage of up to 1000 VDC, are ideal for use in energy storage systems, E-bikes or E-scooters.
Besides the transformers, the new WE-BMS series components also include at least one common-mode choke to filter common-mode interference. Würth Elektronik's design offers far longer physical creepage than comparable products on the market yet is very compact. Low-profile component variants of 3.45 mm in height are also available.
battery management
The individual cells of a battery pack are connected in series, as are the downstream BMS controllers
As the product code WE-BMS spells out, the transformers are optimized for battery management systems. They are primarily used to ensure reliable operation and provide information about the charging status.
The individual cells of a battery pack are connected in series, as are the downstream BMS controllers.
applications
Voltage differences and electromagnetic interference may occur between series-connected components or boards. The WE-BMS transformer serves to isolate components from each other and suppress EMI.
Applications include storage systems for solar installations or uninterrupted power supplies (UPS). As the WE-BMS series is AEC-Q200 qualified, it is also very well suited for E-mobility applications. WE-BMS supports serial daisy chains, isoSPI, and SPI.
Free samples for electronics developers
Designed for the extended operating temperature range between -40°C and 125°C, the component is available from stock in various sizes from 7.6 x 9.5 x 5.5 mm to 15.1 x 15.4 x 3.45 mm with no minimum order quantity. Würth Elektronik provides free samples for engineers.