EV battery
Performance analysis of BYD battery technology ternary lithium battery pack
by:Vglory
2021-04-24
The development speed of battery technology is not fast, and the energy density can only be slowly increased with 1% as the unit of measurement. Taking into account that BYD does not have any disruptive black technology for lithium iron phosphate batteries, when the energy density suddenly rises by 50%, there is only one possibility: BYD has replaced a ternary lithium battery pack. The average lifespan of BYD's ternary lithium battery pack is 500-1000 times, and if it is done well, it can reach more than 1000 times. The life of the power lithium-ion battery is also directly related to our car usage habits, external environment temperature, and charging habits. The ternary lithium battery pack has a service life of up to 1.2 million kilometers, making it the first choice for many potential buyers of electric vehicles. To popularize electric vehicles, it is necessary to increase the cruising range, and the advantages of ternary lithium battery packs are clear in this respect, so auto manufacturers have chosen to give priority to the cruising problem, and then deal with safety issues through various optimizations. In terms of energy density, the energy density of BYD's ternary lithium battery pack reached 160 wh/kg this year, and the energy density of lithium iron phosphate batteries can reach up to 140 wh/kg. It can be said that BYD has finally taken a substantial first step in the category of ternary lithium battery packs. For BYD, which originally started with batteries, high-performance batteries are one of BYD’s killer features. Especially after the replacement of the ternary lithium battery pack with higher energy density, higher discharge voltage and better low temperature performance, the core competitiveness of BYD's EV model series has been greatly improved. The ternary lithium battery pack in BYD's new car has been upgraded from a current lithium iron phosphate battery to a ternary lithium battery. The energy density of the battery pack is increased to a maximum of 140.97kW/kg, which greatly increases the cruising range. The maximum charging kilometer is increased from 40kW to 60kW, which can reduce the waiting time for users to charge. In addition, the maximum constant-speed cruising range of the new car can reach 480km. As the leader of domestic new energy vehicles, BYD's every move will receive extensive attention from inside and outside the industry. In the future, BYD will no longer stick to the lithium iron phosphate battery completely, and at the same time strive to embrace the ternary lithium battery pack. The author believes that the logic behind it is that the competitive environment has brought tremendous touch and change to BYD. According to the production and sales data in the first half of the year Look, the vast majority of new energy vehicles are using ternary lithium batteries, and its advantages need not be said. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: How to charge and discharge lithium batteries correctly?
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