New stacking process! Xiaomi MIX Fold 4 is equipped with Jinshajiang 'three-dimensional special-shaped' battery for the first time

According to news on July 19, Xiaomi MIX Fold 4’s new flagship folding phone was officially released tonight, equipped with a “three-dimensional special-shaped battery” for the first time. According to reports, Xiaomi MIX Fold 4 has achieved a major breakthrough in battery technology and designed an innovative "three-dimensional special-shaped battery" specifically for folding screens. Traditional folding screen devices mostly use conventional square batteries, which have low space utilization efficiency. In order to solve this problem, Xiaomi did not use the common winding battery cells, but developed a new lamination process to create a new form of battery, which greatly improved the space utilization.

Battery Technology Innovation

In order to achieve precise alternating stacking of positive and negative electrode sheets and ensure the safe embedding of lithium ions, Xiaomi has developed a new ultrasonic welding machine and laminating machine to improve welding and cutting accuracy.

Multi-layer lamination design

• The large lamination is composed of 23 layerspole pieces.
• The small stack consists of 5 layerspole pieces.

Cutting and fitting

• The stacked sheets can be cut into different shapes to achieve a perfect fit inside the fuselage.

Reduce internal resistance

• The multi-pole design reduces internal resistance, reduces 25%heating, and improves battery efficiency.

  

  Xiaomi MIX Fold 4 battery technology

1. Three-dimensional special-shaped battery design:

   • Optimize battery space utilization, which is equivalent to an increase of 260mAh capacity.

2. High silicon anode material:

   • Improve battery life to 1600 cycles.

These innovative technologies:

• significantly improve the battery life of folding screen devices.
• Brings a new direction to the development of folding screen battery technology. fenye

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