1. Background

Recently, BYD Chairman Wang Chuanfu revealed for the first time at a financial report communication meeting that BYD is currently developing the second-generation blade battery system, which will be released as early as August 2024. The energy density of the new generation of batteries will be 190Wh/kg, and the range of pure electric vehicles will exceed 1,000km, which is expected to rewrite the fate of LFP batteries.

Blade Battery have been the core synonym of BYD’s new energy for some time. As of today, they are installed in almost all BYD models, and their performance and quality have been put to the test. The origin of the name “blade battery” is also very simple. It is essentially still a lithium iron phosphate battery, but the shape of the battery cell is very similar to a blade, so it is called a blade battery.

BYD Blade battery use a module-free design that directly integrates the cells into a battery pack, which greatly improves the battery volume utilization rate and effectively reduces the battery weight and thickness, making it lighter, thinner, longer in battery life, and leaving more space for the passenger compartment. In addition, it also performs very well in terms of safety and thermal management performance.

According to reports, the battery energy density of the second-generation blade battery is expected to reach 190Wh/kg, which is higher than the 140Wh/kg of the old model. Even the latest BYD blade battery has an energy density of only 150Wh/kg. This shows that the second-generation blade battery is indeed a veritable upgrade.

Note that this refers to the battery weight energy density. Simply put, the higher the battery weight energy density, the more electrical energy is stored per unit weight, and the higher the pure electric range of the car will be.

Wang Chuanfu said that the second-generation blade battery has a smaller battery pack, lighter weight, and lower power consumption per 100 kilometers under the same battery life. This means that the second-generation blade battery has not only improved energy density, but also optimized the battery pack volume, weight, and power consumption, further improving the range and performance of electric vehicles.

In the end, BYD’s Next-generation blade battery is expected to help pure electric vehicles successfully exceed 1,000km in range and create the highest performance of LFP.

2. Advantages of the Next-generation BYD blade battery

The first generation of blade batteries set off BYD new energy revolution, and the impact of the second generation of blade batteries is no less than that of the first generation, or even crazier.

• First, Under the same endurance, the second generation of blade batteries is smaller in size and lighter in weight, which means that the cost of the battery pack is lower. It can not only bring a more spacious cabin space, solving the space problem that pure electric cars have always had, but also help BYD further reduce costs, becoming the core killer of the “price war”.
• Second, the higher energy density means that the second generation of blade batteries can provide a longer range, up to 1,000 kilometers, which greatly solves the pure electric range anxiety that some consumers are more worried about, and achieves a huge breakthrough in the range and energy replenishment of new energy vehicles.

In fact, in addition to the second generation of blade batteries, BYD will also release the fifth generation DM-i plug-in hybrid system this year, with a fuel consumption of only 2.9L per 100 kilometers, and can run nearly 2,000 kilometers with full fuel and full charge, directly maxing out the range and economy.

3. Compared with traditional power batteries, the advantages of blade batteries

To date, the large-size stacking process is the basis for the high performance of blade batteries.

Compared with the winding form of traditional power batteries to produce battery cells, blade batteries use a stacking process. The current density of the stacking structure is more uniform, the internal heat dissipation performance is better, and it is more suitable for high-power discharge. Therefore, blade batteries have better cycle characteristics, safety characteristics, and energy density.

All-round high-temperature “ceramic battery” technology improves the upper limit of blade battery safety. Blade batteries use high-temperature ceramic coatings with high temperature resistance and excellent insulation performance in key parts to improve safety.

With large-size stacking technology and all-round high-temperature “ceramic battery” technology, the blade battery charging cycle life exceeds 4,500 times, and the attenuation after charging more than 4,500 times is less than 20%. The life is 3 times that of ternary lithium batteries, reaching a mileage life of 500,000-1 million kilometers.

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