How strong is the blade battery, which many people don't understand, to evolve to the second generation?
Strictly speaking, a blade battery is not a completely new battery, but a completely new arrangement.
Based on the characteristics of lithium iron phosphate to create a blade battery, many people think that its biggest benefit is stability and safety, which is actually a wrong understanding, the biggest benefit of the upgrade of the battery structure is multifaceted, can be divided into explicit advantages and implicit advantages.
What is invisible is the hidden advantages, such as the improvement of security and stability.
There are actually more visible advantages, such as the blade battery effectively reduces the module, improves the volume utilization, not only reduces the weight, but also improves the "charge", the most important thing is that because of the improvement of the volume utilization rate, the volume and thickness of the entire battery pack are reduced.
The obvious advantage is that the huge battery pack does not encroach on the passenger compartment space.
For example, the BYD Han EV, which has a maximum battery capacity of 85.4 kWh, is a large battery pack sedan, and the battery pack placed at the bottom does not encroach on the front and rear row space while maintaining a certain ground clearance.
Lowering the floor means that the head has a suitable vertical movement space, which is similar to the space performance of fuel vehicles.
We have been complaining that the suspension material level of BYD Han EV is not high and the handling performance is not good, but few people will complain about the uncomfortable seats, floors, and riding problems of BYD Han EV, in fact, this is the biggest affirmation of the blade battery.
Recently, several new electric sedans have been launched, although the data is very explosive, but the obvious problem is that the sitting position is high, and the problem of obviously uncomfortable riding has also been complained about by the market.
In fact, this is the inevitable result of the battery pack being too large and encroaching on the passenger compartment space.
BYD's blade battery is actually very safe, and we need to retreat to a rational perspective to think about a few questions:
1. The cost of blade batteries is already very low, and blade batteries can be used on models in the early 100,000s.
2. Its reliability is not low, although there are a lot of spontaneous combustion problems on the Internet, but from the perspective of BYD's annual sales of 3 million, this ratio is extremely low.
3. Its endurance performance is very strong, which is based on the ability to equip large battery packs for entry-level models at a lower cost, and on the basis of not seizing space, user acceptance is good.
Many people ignore a problem, at present, all BYD systems are tram attributes, no one complains about poor space and poor comfort, and these credits come from the blade battery.
From the earliest CTM, to today's CTP and CTC technology, in fact, is the process of integration and reorganization of battery chips, why enterprises should work so hard to evolve the battery pack, one reason is to let the battery pack evolve, can effectively improve the charging speed, use safety, another important reason is to improve the battery capacity, reduce the volume.
These are all important.
From CTM to CTP, it is the process of reducing modules, and CTP to CTC is the process of continuing to optimize the battery and body integration scheme, among which the biggest improvement is the improvement of volume utilization, the current volume utilization rate of Kirin battery 3.0 in CATL is more than 70%, and the solution with ternary lithium can make the energy density of the battery pack exceed 180Wh/kg, and the better battery cells can reach the level of 200Wh/kg.
Longer battery life and lighter weight are the most intuitive expressions.
At present, the energy density of BYD's blade battery is about 140Wh/kg, in fact, the data performance is not the best, because the current blade battery is still the first generation of blade batteries 3-4 years ago, and the second generation of blade batteries will be released in 2024, and it is said that the energy density will be around 180Wh/kg.
This will be another breakthrough with the following advantages:
1. With the same battery life, its volume proportion is smaller and its weight is lighter, which is an optimization for power consumption.
2. With the same volume, it can ensure a longer battery life, and a version with a longer battery life is launched on the basis of not taking up space.
3. The new battery pack will further improve the charging speed.
Of course, the specific parameters have not yet been exposed, but from these points, the second-generation blade battery may not be obvious for the improvement of perception, but the point required for each technological evolution is not a huge perception improvement, but on the basis of controlling costs, ensuring safety and quality, once again promoting the upgrading of technology.
What we have always needed is not top-level technology, the top-level Kirin 3.0 is indeed very strong, but the price is also extremely high, but this kind of technology that can produce a deep consumption link with the working class is what we need.
Therefore, for the working class, the technical attributes and upgrade characteristics of the second-generation blade battery are actually more worthy of attention.