The high voltage switch energy storage device is smoking

What is a high-voltage solid-state switch?

Finally, a high-voltage solid-state switch is developed based on the SiC MOSFET series connections, whose output pulse width is adjustable from 20 to 300 μs, frequency is adjustable from 1 Hz to 3 kHz, the maximum output voltage can reach 57 kV (1 Hz), and the overcurrent protection time is about 1 μs. Circuit design.

What is a DC switch?

Basics of DC switching Whenever an electrical high power device is turned off und load (for example, motors, transformers, energy storage or similar power loads), its switch, relay or contactor transitions from a closed to an open state under load and an electrical arc (break arc) occurs between the two contact points (electrodes) of the switch.

How to improve the voltage level of a single switch?

By optimizing the chip structure, the voltage level of a single switch can be improved. Due to the immaturity of the production process and the positive correlation between the blocking voltage and the on-resistance of the switch, it is difficult to improve the blocking voltage and the continuous forward current of a single switch simultaneously.

Does a high power switch prevent arcing?

In contrast to AC switching, where zero-crossing of voltage and current facilitates quenching and in some cases prevents arcing, only the high power switch can extinguish the arc generated by a DC source.

How to reduce the safety risk associated with large battery systems?

To reduce the safety risk associated with large battery systems, it is imperative to consider and test the safety at all levels, from the cell level through module and battery level and all the way to the system level, to ensure that all the safety controls of the system work as expected.

Does fire and smoke release scaleup linearly during thermal runaway?

The study included characterization of the components of fire and smoke during thermal runaway for NMC and LFP cells, modules, and batteries and to determine if the size and volume of fire and smoke released scaleup linearly when one goes from the cell to module and then to a battery configuration for the same cathode chemistry.