Geely Auto Group launched its latest generation of in-house developed short-sheet lithium iron phosphate batteries, which offer best-in-class battery life, charging speed and maximum safety.
The company stresses that the new short-sheet battery technology will become the new benchmark for electric vehicle batteries with high safety standards, compact size, higher energy density, better volume utilization and greater flexibility to adapt to different pack designs.
The innovation uses a high-strength diaphragm, high thermal stability and high heat resistance, with a highly stable separator along with safe electrodes resulting in higher energy density and safety.
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Technology Details
Geely Auto has applied its in-house developed self-fusion technology on the electrode surfaces to block short circuits in the event of an accident.
If the battery cell is punctured during an extreme shock, a layer of aluminum foil will fuse into the battery diaphragm to create an insulating layer, preventing short circuits and thermal runaway events.
To date, the standard automotive test for EV battery safety performance is the single needle puncture test, however Geely Auto has been testing the New Short Sheet EV Battery Technology with eight simultaneous puncture needles, which significantly increase the amount of damage received in extreme crash situations.
During the tests, it was simultaneously punctured by eight steel needles in unison, each with a diameter of 5 mm and allowed to stand for 1 hour with no harmful effects.
In addition, the New EV Battery Technology was subjected to a 5.8 mm (5.8×42 mm) infantry rifle bullet penetration test with no thermal ignition events.
