Opportunities are accompanied by challenges. After the implementation of the new national standard, consumers have put forward higher requirements for the performance of electric vehicles, which also means higher challenges for the energy density, range, life span, quality, green and other performance of lithium batteries.
After the implementation of the new national standard, four basic requirements for lithium batteries for electric bicycles have been put forward.
1. High energy density
High energy density means higher battery capacity and volume ratio. The new national standard requires that the maximum speed of electric bicycle is not more than 25km/h, motor power is less than 400W, and the overall vehicle mass is not more than 55kg, which means that the weight of the electric vehicle should be reduced while not reducing the performance, so the ternary lithium battery with lighter weight, higher capacity and better performance is bound to become the first choice. Bick battery in the field of small power is constantly breaking through the energy density, has improved the battery capacity from 18650-2.5Ah to 21700-5.0Ah, volume specific energy density from 544Wh / L to 743Wh / L. 2.
2. Long cycle life
The cycle life of Li-ion battery directly affects the service life of electric vehicles, whether it can be charged and discharged several times under different temperature conditions, and still maintain high battery capacity after deep cycle. Bick NCM battery is compatible with normal temperature and high temperature cycles, suitable for different scenarios, and can maintain more than 90% of the battery capacity under thousand normal temperature cycles.
3. Strong temperature adaptability
The use scenario of two-wheeled electric vehicles is relatively complex, to ensure that the electric vehicles can work as usual in the cold of -20℃ and the heat of 45℃, it is necessary for the lithium battery to be able to take into account the high temperature storage and discharge performance in high and low temperature, which is applicable to different environments.
4. High safety
Safety is the basic performance of electric vehicles, and battery safety is a particularly important part of it. From the BMS protection settings to the anti-shock and explosion-proof structure of the battery, to ensure the safe use of lithium batteries in the changing environment of electric vehicles.
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