Pure electric vehicles or gasoline vehicles? As a hot topic in recent years, it has been discussed countless times, whether it is environmental protection or sentiment, emerging technology or deep accumulation… There is still no conclusion. Then, we might as well judge the two by one of the most intuitive and important indicators to measure the car experience – economy.
Some people say that although electric vehicles have zero fuel consumption and save money on the surface, they pay more for the invisible time cost; some people object that most pure electric vehicles now have fast charging functions, and the time cost has been greatly reduced; Said that the current technology is different, and the strength of each company is very different. If there is a model with a short battery life and a long charging time, how to solve it?
In the past, we often discussed the economics of fuel vehicles, but for pure electric vehicles, we only saw the superficial expenditures and ignored the “economics” of pure electric vehicles. Pay attention to the cruising range, but ignore this point, and you will inevitably be cheated.
How do fuel vehicles improve fuel economy?
How to improve the economy of pure electric vehicles? Why not take a look at how fuel vehicles improve the economy, which may have some reference significance for the economy of pure electric vehicles.
In order to achieve better fuel economy, many car companies have made efforts. On the one hand, the thermal efficiency of the engine is improved to improve fuel utilization. For example, the well-known 2.5L inline four-cylinder engine on the eighth-generation Toyota Camry has increased the thermal efficiency to a terrible 41%. On the other hand, the weight of the car body is constantly reduced, and more lightweight materials are used, such as the all-aluminum engine that has long been popularized, the all-aluminum body on high-end models, and even the use of carbon fiber materials on top sports cars. The ultimate goal of an exception is to make itself lighter.
To put it simply, it is to increase revenue and reduce expenditure.
Then how to achieve “open source and reduce expenditure” on pure electric vehicles?
Some people propose to reduce the burden on the battery pack, but if you want to increase the battery life, you can only increase the battery pack, especially in today’s increasingly stringent policy requirements for battery life, in order to meet the standard, you have to “drink poison to quench your thirst”, especially in the case of external supply. In the market environment, with similar batteries and similar body-in-white, increasing battery life will only make the body more bulky.
However, the engineers thought of another way. Since they cannot start with the battery, they should start with the body structure. Among the pure electric vehicles of many brands, we see more and more all-aluminum body structures being used, such as Tesla Both Model S and Model X adopt an all-aluminum body structure, which is lighter than the traditional steel body, which can make up for the increased weight of the heavy battery pack as much as possible, improve performance and increase battery life.
Although it is good, the cost of the all-aluminum body is too high, and the maintenance cost of the damaged body in the event of an accident is also much higher. More importantly, in terms of safety, because the plasticity of aluminum alloy is too strong, in the event of an accident The protection of the occupants in the car is still not as good as high-strength steel, which leaves a greater hidden danger to the safety of the occupants.
Is there no other way to improve the fuel economy of pure electric vehicles? Of course there is! For example, BYD’s upcoming revolutionary product – BYD e2.
Why do you say it is a revolutionary product?
Because it is currently the first pure electric vehicle on the market that is much lighter in weight than fuel vehicles of the same level, and its cruising range is not inferior to other pure electric vehicles of the same level. The weight of the whole vehicle is only 1250KG. You must know that Geometry A, which was just launched some time ago, has a self-weight of 1650KG, which is 400KG higher. Even the “slimming” Roewe Ei5 has reached 1555KG, which is equivalent to the state of e2 when it is full, and it is still 4 A strong man.
In order to ensure the safety of the vehicle, in the selection of materials, a large area of high-strength steel is still used, supplemented by advanced processes such as laser welding, so as to achieve the double excellent performance of safety and lightweight. All this is enough to surprise and surprise, how on earth is this done?
Advanced e-platform
Thanks to the new e-platform developed by BYD, the new e2 first fully optimizes the body structure, and highly integrates the three-electric system that affects the weight of pure electric vehicles. After integration, the volume is reduced by 30% and the weight is reduced by 25% compared with split products. %, power density increased by 20%, achieving higher transmission efficiency, lighter weight, and smaller footprint, giving BYD e2 a natural good foundation, and this is only one of the reasons why BYD e2 can significantly reduce weight.
Higher energy density battery pack
What is really exciting is the attainments in the battery. Thanks to years of hard work and development in the battery field, BYD, which insists on independent research and development, “plays hard” on the battery, just like the newly developed ternary battery used in the new e2 The energy density is as high as 160Wh/KG. It should be known that the energy density of ternary lithium batteries commonly used in the market is only 140Wh/KG. For example, the energy density of Roewe Ei5 and Geely Geometry A is only 142Wh/KG. High energy density means that to achieve the same battery capacity, the mass will be lighter. Compared with the lightweight body, the weight reduction of the battery pack is a real big step for the development of pure electric vehicles.
Ultra-low energy consumption, more energy-saving
As for the indicator of electric vehicles that consumers are most concerned about-the cruising range, light weight can also bring about a considerable increase in mileage. With a battery capacity of 47.3KWh, BYD e2 has a cruising range of up to 402KM and energy consumption of only 11.3KWh/100KW, surpassing the 12.5 KWh/100KW of Tesla’s latest Model 3 in one fell swoop. Compared with other domestic new energy models, most of which still have an energy consumption performance above 13 (for example, the recently launched Roewe Ei5 has an energy consumption of 13.2, and the geometry A energy consumption has an energy consumption of 13), BYD e2 has achieved 100% in terms of energy consumption performance. obvious advantage.
The energy consumption of pure electric vehicles is equivalent to that of fuel vehicles, and lower energy consumption performance means stronger economy. It can be seen that the BYD e2, which was born on BYD’s new e-platform, not only performs well in terms of appearance design and driving experience, but also leads the energy consumption of pure electric vehicles in China in terms of vehicle economy.
Summarize:
With the arrival of the all-new BYD e2, BYD will open a new chapter in my country’s pure electric crossover car market, relying on BYD’s deep accumulation of car-making technology and the strong empowerment of the new e-platform. I believe that with the emergence of more batteries with higher energy density in the future, lighter, stronger and more energy-efficient models will also enter our lives, and among them, BYD and e2 models will definitely leave their own indelible imprint of
