If you like to pay attention to new energy models, then you have watched a lot of press conferences of new car-making forces, and you must be familiar with the keyword 800V. After all, for new energy vehicles, especially pure electric new energy vehicles, the refreshing degree of supplementing the cruising range will directly affect the multi-faceted car experience, so the 800V platform that can break the game has become the key to solving the problem of energy replenishment for new energy vehicles. So much so that nowadays, as long as it is a model with a slightly higher budget, it is trying to find a way to use the 800V platform.
And BYD, as a benchmark for new energy, why didn't it make a big splash to promote the 800V platform?The facts may surprise many people - for BYD, the 800V platform is not high-tech at all, and even as early as 2015, when the new energy vehicle was still controversial, BYD's world's first 800V high-voltage platform for passenger cars has come up with the 2015 Qin EV, 2015 Tang DM and other models. Therefore, for BYD, since the 800V platform is not an advanced technology, why should it be publicized with great fanfare?
It is no wonder that the performance of BYD's new energy models can be so strong, not only the acceleration level of 0-100km h can reach 4 seconds, but also the fast charging power of 60kW and the solid cruising range are also impressive. With the advantage of the 800V platform ahead of the industry by 2-3 generations, the moat of the BYD brand has been quietly built.
Of course, the vehicle hardware of the 800V platform encounters low-voltage charging piles below 500V, and the result will be quite embarrassing, and even many public charging piles are designed in accordance with the 2015 version of the charging national standard, with a maximum charging current of 250A......But there are indeed fewer high-voltage fast charging piles, what should I do?
Coincidentally, BYD has also pioneered the world's first step-up charging technology, so that people no longer need to compete for a small number of fast charging piles, but can use dual-gun supercharging technology, relying on two charging guns to greatly increase the charging current, and make full use of up to one million charging pile resources to achieve rapid energy replenishment. For example, the maximum charging power of the DENZA N7 can reach 230kW after using dual-gun overchargingTheoretically, it can be charged in 15 minutes to replenish the range of 350km.
In winter, new energy vehicles will also face low energy replenishment efficiency, so many car owners will go to great lengths to find indoor charging piles for energy replenishment. Many of BYD's models rely on full-scene intelligent pulse self-heating technology, which can be excited to generate high-frequency alternating current inside the power battery, while the battery cell uses its own internal resistance to quickly generate heat under high-frequency alternating current to achieve rapid heating, compared with traditional solutions, the battery heating rate is increased by more than 230%, and the time for battery full charge can also be reduced by 30%. On the other hand, BYD's battery has also been designed with a compensating runner, which increases the cooling area of the battery by 100% and the heat exchange capacity by more than 85%, which can be said to be fearless of the test of the four seasons.
In retrospect, when BYD overcame obstacles to open up the road, many charging technologies also achieved breakthroughs from 0 to 1, and finally became an important accumulation of BYD's technology fish pond today, and also made BYD the first batch of Chinese electric vehicle charging standards drafting unit. With 20 years of technology accumulation, BYD will continue to build a charging technology system that is more in line with the current national conditions, and ultimately, rely on advanced technology to improve consumers' car experience.