With the rapid development of new energy vehicles, energy replenishment efficiency has increasingly become one of the concerns of consumers. Of course, there are also many car companies in the new energy vehicle energy efficiency efforts, in the rapid development of charging efficiency today, "3C", "4C", "5C" and other "charging rate" concepts were born. The "C" here refers to the expression of the battery charging rate, which is a measure of the speed of battery discharge, generally speaking, the larger the C rate, the higher the charging efficiency, and the less it takes to fully charge. Specifically, 3C refers to the battery being fully charged in one-third of an hour (20 minutes); 4C charging means that the battery is fully charged in a quarter of an hour (15 minutes); And so on.
It is worth mentioning that although the higher the rate of the battery, the more it can provide the convenience of fast charging for daily vehicles, the progress of the industry's charging capacity from 3C to 4C or even to 5C is relatively slow, because it is difficult to balance high energy density and high charging rate performance with fast battery charging, and at the same time, full-speed and high-rate fast charging will bring more serious lithium separation reactions, which will affect the safety and service life of the battery. So what should users focus on when considering the fast charging performance of different vehicles? Compared with the peak charging power that the vehicle can achieve, users should pay more attention to the actual charging time when considering fast charging, especially the charging time of 30%-80%. Because the peak efficiency of fast charging will be affected by factors such as charging pile, temperature, etc., resulting in the actual charge of the battery being less than the nominal output power of the charging head or charging station.
With the emergence of today's 5C technology, can it be considered that it can be popularized on a large scale? In fact, the construction cost of 5C supercharging is high, and the requirements for battery thermal management are high, and it cannot be rolled out in the short term. In contrast, 4C battery technology is higher and more reliable in terms of technical maturity, safety and service life. So, how to choose a specific vehicle? Users still need to choose a more stable and reliable model according to the all-dimensional test of the tram.
Efficient energy replenishment is safer, and ultra-low temperature environment test witnesses the ultimate energy replenishment
For the "old difficulty" of new energy replenishment, the current talk is more about the efficiency of energy replenishment and the stability of energy replenishment in low temperature environments. How to effectively solve the energy replenishment efficiency under extreme working conditions, so that charging is as convenient as refueling fuel vehicles, many excellent car companies have proposed solutions.
At the beginning of the vehicle off the assembly line, the Star Era ET simultaneously arranged a series of jixian tests related to battery safety and battery charging and discharging. The Epoch ET pure electric version is equipped with CATL Shenxing ultra-rechargeable battery, which accelerates the lithium-ion transmission rate by building a "highway" inside the battery between the positive and negative electrodes, increasing the peak charging power to an astonishing 420kW, and it only takes 11.5 minutes to complete 5%-80% SOC charging at room temperature, corresponding to a 475km increase in battery life. The ultra-fast and stable charging efficiency and battery life have undergone a series of authoritative tests and certifications, which have caused great reactions in the industry.
It is worth mentioning that the charging efficiency of new energy batteries is affected by the environment, especially in the cold north, and the extremely low temperature will greatly reduce the charging efficiency, resulting in a false battery power. As the culmination of Chery's spire technology, the Star Era ET has the ability of "full-temperature lightning fast charging". In order to fully verify the energy replenishment ability of the Epoch ET in the extremely cold and low temperature environment, the Epoch Epoch has conducted a number of tests in the extremely cold environment in the north, even in the extremely cold environment of -20°C, the Epoch ET can complete 20%-80% SOC charging in only 24 minutes.
In addition, the Epoch ET has also done a professional charging test in Yakeshi, and at -25°C, it only takes 22 minutes to charge 30%-80% of the Epoch ET. The real and effective test environment more effectively demonstrated the reliability and stability of the vehicle's energy replenishment in the ultra-low temperature environment, and also greatly alleviated the anxiety of northern users about tram energy replenishment.
In the pursuit of efficient supercharging, battery safety is particularly important. Due to the changeable driving environment of the vehicle, it often encounters factors such as cold, wet, rain, and environmental changes, once the sealing of the battery pack is defective, it may lead to vehicle insulation failure, and water enters the battery pack to cause a short circuit, so that it can not drive normally, and in serious cases, it will cause the power battery to catch fire and burn, or even explode.
In order to fully baozhang battery safety, Epoch ET conducted a low-temperature ice water immersion test challenge on the safety and tightness of the battery pack at -30 °C before going offline, and the duration was twice as long as the national standard, which was 60 minutes, and the appearance of the battery pack was still intact, and the air tightness and insulation tests were consistent with those before soaking, and it could still work normally when reinstalled on the vehicle. Better technology, coupled with Jixian's testing, only creates a safer electricity experience for users.
The comparison of charging efficiency and strength, the level of ability is immediately revealed
In the arena of high-end new energy vehicles, charging efficiency is an important yardstick to measure the strength of the model. Through the comparison of the overcharging efficiency of multiple models by a third-party authority, the overcharging gap of each model can be more intuitively felt.
The Epoch ET Pure Electric Pro City Intelligent Driving Edition, at the official supercharging station of Xingtu, only takes 9 minutes of super fast charging, and can easily complete the leap from low battery to high power, which is amazing. Some higher-priced star models, it takes 20 minutes to achieve 20% to 80% SOC charging, although the efficiency is also fast, but the peak is significantly behind the rapid trend of the Star Era ET. And some of the recently released star cars, although they have the word "5C", actually take at least 10 minutes to fully charge, and they are ranked in the diyi echelon at the same time as the Star Era ET.
It is worth noting that the Epoch ET not only has high supercharging efficiency in the pure electric version, but also gives a variety of energy replenishment and battery life schemes. In addition to the 77kWh Shenxing battery equipped with the pure electric Pro City Smart Driving Edition, it can achieve efficient energy replenishment by increasing the range by 50km after charging for 1 minute. For users who pay more attention to the overall endurance strength, the long range of 1500km+ of the Epoch ET extended range also greatly alleviates the energy replenishment anxiety of users for long-distance travel.
In a comprehensive comparison, this is not only a visual demonstration of the charging speed, but also a strong proof of the leading technology of Star Era ET. With its strength, Epoch ET has defined a new height of supercharging for new energy vehicles, making every charging a perfect integration of efficiency and convenience, leading the industry towards a more brilliant future.
With the continuous expansion of the new energy vehicle market, the construction of charging infrastructure is also accelerating. By the end of 2023, the number of public network access in the country has exceeded 300,000, and it is expected that by the end of this year, the number of public networks in the country is expected to exceed 700,000. In this context, with its excellent supercharging technology and wide applicability, Xingtu Star Era is actively embracing the arrival of the new energy supercharging era. It will lead the supercharging track with its strength, promote the dual improvement of charging efficiency and safety, truly solve the problem of energy replenishment for users, and make new energy travel more convenient and reassuring.