Long-blade batteries are no longer the mainstream in the industry? Geely Shield Short-blade batteries tell you why

Currently in the Chinese automobile market, new energy vehicles have become the mainstream of the market. According to the latest data from the China Passenger Car Association, the penetration rate of new energy vehicles in my country's market has reached 53.3% in September. Power batteries are one of the core components of new energy vehicles. It can be said that if you want to make good new energy vehicles, making good batteries is a compulsory course.

At present, the short-blade battery has replaced the long-blade battery and become one of the mainstream trends of power batteries. Domestic leading car companies such as BYD, Great Wall, and Geely have invested in the research and development of short-blade batteries. Let's take a look at the representative of short-blade batteries today-Geely Aegis short-blade battery. At the 2024 Power Battery Development Trend Forum, Wang Fang, chief scientist of China Automotive Technology and Research Center Co., Ltd., praised the Aegis short-blade battery: "The result of power battery technology innovation is the continuous improvement of life and safety. The structural innovation of the Aegis short-blade battery is a good attempt to meet consumers' demand for new energy vehicles." At the booth of the New Energy Conference, Wan Gang, Chairman of the China Association for Science and Technology and Chairman of the World New Energy Conference, also exchanged views with Tang Liming, Chief Product Strategy Officer of Geely Auto Group, and his team, and pointed out that "Geely's self-developed and self-produced Aegis short-blade battery is shorter than the long blade", which is the core point of technological progress, and gave affirmation.

So what exactly does it do? Compared to the Changdao battery, what breakthroughs and innovations does it have?

1. Tested safety, true gold is not afraid of fire

Safety is the first priority when buying a car. When consumers choose electric cars, they also focus on the safety and reliability of the battery. For example, they worry about "Will it spontaneously combust? Will it catch fire in a collision?" After all, in recent years, there have been more and more news reports of electric cars spontaneously combusting and catching fire in collisions. Therefore, if the battery's safety factor is high enough, it is a big plus.

Geely's Aegis Dagger battery adopts the CTB configuration, which has higher structural strength, and its battery cells have successfully passed the 8-pin same-puncture and 5.8mm live bullet experiments of China Automotive Technology and Research Center. The battery pack has also easily passed the 6 serial devil test items of dynamic seawater corrosion immersion, extreme cold in plateau, high-frequency scraping, violent crushing, single-pack side column collision, and fire burning. Each item is far beyond the national standard requirements, and it still achieved no fire or explosion. Such severe tests have been passed, and the safety issues faced in daily life can be handled with ease. The sense of security is really full, and it is not an exaggeration to say that it is military-grade safety.

2. Durable and safe to use

Another concern about electric vehicles is that the battery power will decay after the mileage of pure electric vehicles increases, and the endurance level will be reduced, which will cause endurance anxiety in daily use. This can also be seen from the very poor second-hand car value retention rate of electric vehicles. However, Geely's Aegis Short Blade battery can achieve a cycle life of 3,500 cycles and can safely travel more than 1 million kilometers, which is 25 times around the earth. The lifespan is very long. According to the average annual mileage of 10,000 to 20,000 kilometers for an average family, even if the car is driven to the point of being scrapped, the battery will not show obvious power decay.

In actual application, the Aegis Dagger battery pack installed on the Galaxy E5 ( parameters | inquiry ) still has a health rate of 90.5% after completing 921 complete charge and discharge tests. Faced with such a result, I believe everyone must have a better understanding of the longevity characteristics of the Aegis Dagger battery.

3. Fast charging, you can travel a long distance in the time it takes to drink a cup of coffee

The battery recharging speed is also an important factor affecting daily experience, especially when traveling during holidays, when you need to recharge quickly on the way. No one wants to waste too much time recharging at highway service stations, and the Geely Aegis Short Blade battery has the advantage of super-fast charging. The official claims that its average charging rate reaches 2.45C, and the charging time for a single cell from 10% to 80% is 17 minutes, which is about 50% faster than the Long Blade battery.

In addition, according to actual tests by the media at a 160kW fast charging station in Hainan, it only takes 19 minutes and 51 seconds to increase the battery level of the Galaxy E5 equipped with the Aegis Dagger battery pack from 30% to 80%. Such charging efficiency means that at a highway service station, it only takes the time to take a normal break and drink a cup of coffee to quickly replenish most of the battery life, giving you more confidence to travel on a whim.

4. Resist low temperatures and break the stereotype of being afraid of cold

Winter is probably the most unfriendly season for electric vehicle users, because the cold temperature in winter reduces the chemical reaction rate, increases the extra energy consumption, and leads to a reduced range and slow charging speed. Especially for northern users, the discount rate of winter range will be further increased. How to improve the winter range achievement rate also tests the technical strength of manufacturers. At the 2024 Power Battery Development Trend Forum, Academician Jin Yong of the Chinese Academy of Engineering said: "The innovation of lithium batteries must find breakthroughs in both material innovation and structural innovation, and meet the demand for long range by increasing energy density. The Aegis Dagger battery is a good breakthrough in battery structure and material innovation."

It is said that lithium iron phosphate batteries are afraid of cold and cannot withstand high temperatures, but the Aegis Dagger battery wants to break this inherent impression. The Aegis Dagger battery is shorter in length, has lower internal resistance, and generates less heat in the battery cell. It can achieve a higher low-temperature discharge capacity retention rate than the long blade battery, and is 8.7% ahead of its competitors on average. With a battery thickness of 18.2 mm that can "keep warm" and a low-impedance film-forming additive that can reduce the internal resistance of the battery during low-temperature discharge, even at an air temperature of -30 degrees Celsius, the Aegis Dagger battery retention rate is still above 90%, which means you don't have to worry about battery life when driving in winter.

Summarize:

Geely's Shield Short Blade Battery, as the representative of Short Blade batteries, has made breakthroughs and innovations in safety performance, cycle life, fast charging capability and low temperature. It can be said that while strengthening the long-board advantages of lithium iron phosphate batteries, it also makes up for the previous shortcomings and achieves all-round performance in all aspects.

Finally, with the experts' affirmation and the truly excellent quality, the Short Knife battery, which is stronger than the Long Knife battery, will definitely become the mainstream trend of power batteries. I believe that models equipped with Geely's Shield Short Knife battery can become everyone's safe choice.