For users who purchase electric vehicles, battery related issues are major issues, such as range, battery safety, power degradation, etc.
The attenuation of battery power will increase with the increase of usage time and mileage, which has a significant impact on the vehicle’s range and used car retention rate.
Next, let’s talk about battery decay in electric vehicles.
At present, power batteries for electric vehicles are generally divided into ternary lithium batteries and lithium iron phosphate batteries.
Not long ago, Toyota announced the cessation of research and development of nickel hydrogen batteries, and announced that lithium batteries will dominate the country.
Whether it is a ternary lithium battery or a lithium iron phosphate battery, their capacitance will gradually decrease with the increase of charging cycles.
Engineers continuously charge and discharge batteries at a rate of 1C in the laboratory.
When a ternary lithium battery undergoes 800-1000 charging cycles and a lithium iron phosphate battery undergoes 2000 charging cycles, the battery capacity decreases by 20%.
At present, the mainstream electric vehicles equipped with ternary lithium batteries can basically reach a range of 400 kilometers, and the range corresponding to 800-1000 charging cycles is 320000 to 400000 kilometers.
However, due to the continuous decay of the battery with the increase of charging cycle, the actual range is often shorter than the mileage announced by the manufacturer, and the actual total mileage is about 70% of the theoretical value.
After driving 220000 to 280000 kilometers, the battery capacity of the above-mentioned electric vehicles will be reduced by 20%, while the capacity of ternary lithium batteries will be reduced by 7-9% compared to the new battery state at 100000 kilometers, and the range will be reduced by about 28-36 kilometers.
The actual situation may vary depending on the battery quality of different manufacturers and the user’s usage environment.
But according to the actual case of Tesla car owners reported by foreign media recently, the above inference can also be supported.
American car owner Emma purchased the longevity version of the Model 3 in 2018 and drove 100000 miles.
The battery attenuation of this 3 is not significant. Currently, it consumes 100% of its power for 305 miles and has a attenuation of about 5% for 160000 kilometers over two years, which is much better than the measured data above.
As an important direction for the future development of automobiles, electric vehicles have many advantages such as energy conservation, environmental protection, simple structure, and easier improvement of power performance.
Of course, there are also many problems at this stage, such as poor range, slow charging, and battery decay.
But with the development of technology and the maturity of the market, these problems will ultimately be solved or improved.
When it comes to pure electric vehicles, the most important concern for everyone is the issue of battery life.
Although chemical batteries have energy density bottlenecks, with the continuous advancement of technology, battery charging and discharging management is also constantly being optimized.
A pure electric vehicle has a comprehensive range of 300 kilometers, let alone daily commuting.
The remaining issue is the decay of battery capacity over time.
Can new energy vehicles last for 10 years
This is probably a problem that every new energy vehicle owner has calculated before buying a car. Compared to gasoline powered cars, the engine and gearbox can run continuously as long as they are well maintained. No car company’s engine would say how many kilometers or years the engine and gearbox need to be replaced. Of course, this is also the core competitiveness of gasoline powered vehicles. As the mileage increases, the capacity degradation of the battery pack used in pure electric vehicles is irreversible. After reaching a certain limit, the battery can only be replaced.?
Serious, because electric vehicles rely on power to start their batteries and have a certain lifespan
The degradation of battery life will naturally become more and more severe, because the battery service life is limited, and it needs to be replaced when it reaches a certain age, otherwise it cannot maintain the previous power.
It is very serious and can also cause serious impacts. At this time, we should carry out timely maintenance and repair to solve some problems.
Even after driving for a long time, the degradation of battery life will not be particularly severe, unless you do not properly protect the battery life function of electric vehicles in your daily life.
