SemiQ, a USA-based designer, developer and supplier of silicon carbide (SiC) solutions for ultra-efficient, high-performance and high-voltage applications, has confirmed it has begun shipping its SiC MOSFET modules for integration into advanced cell cycling systems used by several of the world’s leading battery manufacturers.
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 to 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 minimizing operational costs.
SemiQ is supplying its GCMX003A120S3B1-N and the GCMX003A120S7B1 QSiC 1200V SiC half-bridge modules for use in 100kW cyclers (10 x 10kW cells with parallel connections).
The company states that these high-speed switching MOSFET modules are “highly efficient with exceptionally low switching losses” and are designed with a reliable body diode, have been tested to over 1,350V, and implement a rugged design with easy mounting. Each 10kW cell will integrate 12 modules, with 120 per 100 kW per cycler.