Blade Batteries: Redefining the Safety and Efficiency of Battery Modules

Introduction

Today, with the rapid development of new energy vehicles, battery technology is the core competitiveness of the industry. The blade battery launched by BYD not only redefines the form of the battery module with its unique structural design, but also achieves major breakthroughs in safety and energy density. This article will provide an in-depth analysis of how blade batteries change the industry structure through structural innovation from the perspective of battery modules.

1. What is a blade battery?

Blade battery is a new type of battery based on lithium iron phosphate (LFP) chemical system. What makes it unique is its "blade"-shaped battery cell design. Different from traditional cylindrical or square batteries, the length of a blade battery can reach more than 1 meter, but its thickness is only a few centimeters. It is shaped like a "blade", hence its name.

2. Structural innovation of blade battery

(1) From "small square" to "long blade"

Traditional battery modules are composed of multiple small battery cells and need to be fixed through complex connectors and brackets. The blade battery arranges long strips of cells into groups, eliminating a large number of connectors and brackets and simplifying the module structure.

(2) Module-free design (CTP technology)

The blade battery adopts a "Cell to Pack, CTP" (Cell to Pack, CTP) design, which integrates the battery cells directly into the battery pack, greatly reducing the redundant space inside the battery pack and improving space utilization.

(3) Improved structural strength

The long strip design of the blade battery serves as a structural support in the battery pack, enhancing the overall strength of the battery pack.

3. How does the blade battery improve safety?

(1) The risk of thermal runaway is reduced

The blade battery uses lithium iron phosphate material, and its thermal stability is much higher than that of ternary lithium batteries. The long strip-shaped monomer has a larger heat dissipation area and more even heat distribution, further reducing the risk of thermal runaway.

(2) Excellent performance in puncture experiment

In the acupuncture experiment, the blade battery did not catch fire or explode even if it was punctured, demonstrating extremely high safety.

(3) Structural design reduces the risk of short circuit

The contact area between the cells of the blade battery is small, and special insulation materials are used, which effectively reduces the risk of short circuit.

4. How does the blade battery improve energy density?

(1) Improved space utilization

The space utilization rate of traditional battery modules is about 40%-50%, while the blade battery increases the space utilization rate to more than 60% through a module-less design. This means that within the same volume, blade batteries can accommodate more active materials, thereby increasing energy density.

(2) Reduce redundant materials

Blade batteries eliminate the need for a large number of connectors and brackets in traditional modules, reducing the weight of the battery pack and further increasing energy density.

5. The impact of blade batteries on the battery module industry

(1) Promote battery structure innovation

The success of the blade battery proves the importance of structural design in battery performance, and more similar structural innovations may appear in the future.

(2) Reduce production costs

The Blade Battery's simplified design and module-less technology reduce materials and production processes, helping to reduce the overall cost of the battery.

(3) Improve the competitiveness of new energy vehicles

The high safety and high energy density of blade batteries provide more reliable power solutions for new energy vehicles and promote further development of the industry.

6. Challenges and future of blade batteries

Although blade batteries have achieved significant breakthroughs in safety and energy density, they still face some challenges:

Low-temperature performance: Lithium iron phosphate batteries have poor performance in low-temperature environments and need to be further optimized.

Production process: The long strip-shaped cells of blade batteries place higher requirements on the production process.

In the future, with the continuous advancement of technology, blade batteries are expected to be applied in more fields, such as energy storage systems and electric ships.

Conclusion

Blade batteries redefine the design concept of battery modules through structural innovation, bringing double breakthroughs in safety and efficiency to the industry. It not only demonstrates the infinite possibilities of battery technology, but also provides strong support for the future development of new energy vehicles. As the technology continues to mature, blade batteries are expected to become an important milestone in the battery industry. Huiyao Laser Technology Co., Ltd. will continue to provide advanced and reliable automated battery modules and PACK production line equipment for the power and energy storage industries to assist development and accompany you.