Chery is emphasizing the safety of its battery through its Global Safety Challenge. In its latest leg, the Chinese automaker immersed its high-voltage battery in seawater. Afterward, it successfully powered up a Tiggo 8 Pro PHEV.
The test, which was held in Jakarta, is supposed to prove the safety of its hybrid vehicles, especially in a tropical climate.
To do so, Chery submerged its 18.3-kWh lithium-iron phosphate (LFP) battery in a meter of seawater for over 53 hours. After which, the “Chery Super Hybrid” or CSH battery was then reinstalled into a Tiggo 8 PHEV. After installation, it successfully powered the SUV down a steep ramp, demonstrating that the battery works even after prolonged seawater exposure.
Seawater is very conductive and corrosive, accelerating material degradation, reminds Chery. The test validates their battery’s operational safety, particularly in Southeast Asian conditions.
Before the seawater immersion test, this particular battery pack has already been subjected to spiral rollovers, dual collisions, a seven-vehicle stack test, a 55 km/h intrusion test, a 4.9-meter drop test, and 720 hours of salt spray exposure in China.
Chery’s battery is an 18.3 kWh lithium iron phosphate (LFP) unit, certified with IP68 waterproofing for resistance against water and dust. It operates within an extreme temperature range of -35 to 60 degrees Celsius. The battery pack is further reinforced its “Chainmail Battery Safety Structure” as well as a multilayer insulation structure: 10 layers at the base, 15 on the sides, and 16 thermal protection layers.
The next phase of Chery’s Global Safety Challenge will take place in Mexico, where the it will undergo an underbody scraping test to assess battery pack protection in challenging road conditions and system stability at high altitudes.
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