Thermischer Runaway-Test der Energiespeicherung
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Als „Thermal Runaway", also thermisches Durchgehen, bezeichnet man eine auf positiver thermischer Rückkopplung basierende Eskalation der Zellentemperatur. Dies gilt generell auch für verschlossene Bleibatteriesysteme, welche ebenfalls
How effective is thermal runaway test?
The results of thermal runaway test also demonstrate that the measures designed to suppress thermal runaway are effective and meet the design requirements. With the rapid development of electric vehicles (EVs), lithium-ion power battery systems as power sources have received more and more attention.
What happened during battery thermal runaway test?
During the battery Thermal runaway test, the temperature sensor inside the battery module was damaged, so the battery temperature date recorded of Battery Thermal runaway test disappeared after about 200 s.
How does a battery module thermal runaway test work?
The specific method involves charging to 4.2 V with constant current and voltage, and calibrating it to 100% state of charge (SOC). All temperature sensors are monitored and recorded in real-time during the thermal runaway experiment. Figure 9 shows a photo of the battery module thermal runaway test conducted in isolation.
How to protect a battery from thermal runaway damage?
At the cell level, without compromising the fundamental performance of the battery, incorporating flame retardants into the battery electrolyte and opting for SEI films that are more heat-resistant are both effective strategies for minimizing the severity of thermal runaway damage.
Why is thermal runaway dangerous?
However, the propagation behavior of thermal runaway can often exacerbate the consequences of thermal runaway and lead to more serious accidents. The heat transfer process in the battery pack is the fundamental reason for the propagation of thermal runaway within the battery module.
What is thermal runaway suppression for battery packs?
Design of thermal runaway suppression for battery packs. The function of the mica plate is to isolate the flames and high-temperature gases sprayed from the battery during a fire from damaging the upper shell of the battery, dispersing heat and preventing heat from concentrating on a metal shell that is prone to burning through the battery.
