BYD blade battery’s history

As we all know, BYD's blade battery(interior photos) was first brought to the attention of the general public as an experiment, this experiment is the needle prick experiment. In the needle prick experiment, the BYD blade battery successfully passed the needle prick and did not occur a large short circuit or fire phenomenon. Today to tell you about the advantages and disadvantages of the BYD blade battery.

Advantages of BYD blade battery

First of all, we need to know what is the blade battery, many people may think that the blade battery is a new type of battery, different from the traditional three-tier lithium batteries and lithium iron phosphate batteries, but in fact, it is not. The blade is only the shape of a single cell, the essence of the use of lithium iron phosphate batteries.

First of all, look at the advantages of the blade battery, the first advantage is that the blade battery unit volume density increases, it is more than the traditional lithium battery density increases by more than 1/3, which also makes the blade battery a higher range.

The second advantage is that the material cost of the blade battery is reduced by about 1/4, and the reduced cost includes both material and human resources.

The third advantage is the small size of the blade battery, which gives the vehicle better space performance.

The fourth advantage, the greatest importance of the blade battery is that it can overcome its resistance to reduce the energy consumed, which can further increase the range of the car, improve the range and increase the range.

The fifth advantage is, blade battery safety performance is better, the traditional battery in the case of high temperature, extrusion, or pinprick, is easy to explode, and the BYD blade battery is indeed able to successfully avoid the occurrence of this phenomenon.

Disadvantages  of BYD blade battery

Next look at the disadvantages of the blade battery. First of all, the first lack of electricity, blade batteries in the case of low temperature, prone to poor discharge. But in fact, this is the occupational disease of lithium iron phosphate, in the winter when the cold, battery power will be greatly reduced, lithium iron phosphate in the lower temperature limit of -20 degrees, the minimum limit of ternary lithium batteries -30 degrees, so this also leads to ternary lithium low-temperature decay of about 10%, while lithium iron phosphate reached 20%.

The second disadvantage is that the blade battery after a collision is difficult to repair. This is due to the blade battery in the production process, he omitted to support the structure of the cell, using each cell itself as a bracket. Therefore, when there is an external impact, it is difficult to ensure the integrity of the cells. If one cell has a problem, the rest of the cells connected in series will also be affected.