As we all know, blade batteries are actually lithium iron phosphate batteries in essence, which can be regarded as a process of lithium iron phosphate. It still has the characteristics of high battery life of lithium iron phosphate batteries in winter. Because it looks like a blade, it is named the blade battery.
Blade battery of BYD was launched in 2020 and adopts high-safety lithium iron phosphate technology, which has a 50% increase in volume and energy density.The battery has passed the most demanding acupuncture test in the industry.Electric vehicles equipped with blade batteries can have a range of more than 600 kilometers.Compared with ordinary lithium iron phosphate and ternary batteries, blade batteries perform better in terms of safety, volume utilization, cycle life, and structural strength.
In fact, the blade battery is essentially a square hard shell battery, but it adopts a long and thin structure design. The overall dimensions are 960mm×90mm×13.5mm. Different models have slightly different sizes. For example, the thickness of the 138AH blade battery is about 12mm, while the thickness of the 202Ah blade battery is about 13.5mm. The pole terminals of the blade battery are threaded and welded platform type. When assembling the battery pack, the positive and negative poles between the batteries can be connected according to actual needs. These two connection methods.The negative side terminal is also provided with an explosive-proof valve.
The design of the lithium battery pack has also been changed by using the CTP module-free scheme to change cell structure. The shell structure of the traditional battery is cancelled, and the blade battery acts as the beam of the battery and also acts as the battery cell. Then the design of honeycomb aluminum plate is adopted, two high-strength aluminum plates are pasted on the upper and lower sides, and the blade batteries are arranged in them.In this way, the traditional module link is skipped, the space utilization rate is improved, and more batteries can be installed in the same space.
When assembling the battery pack, people use the strength of the blade battery itself, the battery pack is grouped to reduce the beam, etc. Under random vibration load, the deformation of the module form is large, and the deformation of the blade battery cell is small. People modular battery pack by changing the structure of the battery pack, the rectangular batteries are arranged vertically and inserted into the battery pack, the structure of the battery pack is simplified, and the space utilization rate in the bag is improved.