SemiQ supplies SiC MOSFET modules EV battery cell cyclers

In lithium-ion batteries, cell cyclers enable the formation of a stable solid electrolyte interphase to enable increased longevity and performance. The systems also enable battery manufacturers to perform battery degradation analysis, temperature and stress testing, and check for defects or performance issues.

To undertake these tasks, the cyclers need to accurately charge and discharge batteries, with high switching frequencies enabling more precise control of current and voltage to avoid damage from overcharging/discharging. For this function, the MOSFETs need to withstand the thermal stress of repeated power cycling, with failure leading to test disruption and inaccurate data. Conversion efficiency is also vital in minimising operational costs.

SemiQ is supplying its GCMX003A120S3B1-N and the GCMX003A120S7B1 QSiC 1200 V SiC half-bridge modules for use in 100Kw cyclers (10 x 10Kw cells with parallel connections).

These high-speed switching MOSFET modules are highly efficient with exceptionally low switching losses, are designed with a reliable body diode, have been tested to over 1350 V and implement a rugged design with easy mounting. Each 10kW cell will integrate 12 modules, with 120 per 100kW per cycler.