CCS Coating

The battery separator film is the most important element in a lithium-ion battery
For public safety, BenQ has both independent and impartial independent verification capability in R&D, production, quality control, and verification of battery isolation films. BenQ is also working with customers and validators from all over the world to achieve the best battery separator film for electric passenger vehicles, large electric vehicles/boats, electric buses, energy storage, and electric tools with the most stringent and continuous validation testing, bringing together battery separator products, and customizing battery requirements.

As the only battery separator manufacturer in Taiwan with both technology and medical manufacturing backgrounds, we are committed to the safety of all end-consumers from the perspective of a leader in materials science, working together with industry, government, academia, and research to refine our R&D technology and keep pace with the times, produced and supplied booth in China and Taiwan with fast and best services for all customer.
Product Categories
Features
Sturcture:
BenQ Materials' battery separator manufacturing base covers six core technologies including "roll-to-roll", "polymer structure", "extrusion" and "coating". Each loop construction method affects the battery separator to display the advantages of "high power", "low impedance" and "fast charge and discharge" in lithium-ion batteries to meet the high-efficiency requirements of energy storage.
The unique "coating" technology can stably control the uniformity of the coating slurry, the thinnest coating is 2um, and it has the capability of double-sided coating, which can provide the best cost and product efficiency performance in response to customized needs.

The thinning of the coating helps to improve the energy density and power density of the cell; the low water content of the coating helps to prolong the cycle life of the cell; the coating effectively reduces the thermal shrinkage of the separator, which can reduce the overall thermal runaway of the cell and the probability of thermal diffusion.
The ceramic coating also increases the withstand voltage of the isolation film (for example, 4.2->4.7V), which can be applied to higher voltage core systems and can effectively suppress the formation of lithium dendrites in the cells, and improve the cycle life.

Coating processing characteristics:
  • High thermal stability of the coating layer
  • low moisture content
  • Thinning
  • CCS客製化塗佈技術
    ▲ CCS top view
Certification
The process is 100% free of metal contamination, a two-pronged approach
In addition to the efficiency of the production, the safety of the battery separator is also given the highest priority by the team.
Full-line, clean room production reduces the impact of dust during manufacturing, while the introduction of AOI high-precision, optical in-line automatic inspection equipment ensures that products can be safely used in batteries without risk of failure or explosion.


Independent Verification of Quality Control Mechanisms, Stringent Requirements
In contrast to the common one-stop product to quality control, BenQ’s battery separator film quality control is independent and not affected by other units. We strictly abide by customer requirements and ISO, IQC, IPQC, FQC, OQC, and IATF 16949 certifications to ensure that our products are in the best condition to provide customers with peace of mind in the battery and cell manufacturing process.

Specialist Pooling and R&D Focus
The team has invited polymer professionals and experienced specialists from domestic and foreign battery cell factories to continuously adjust the power of battery separators with high porosity and low air permeability to ensure the best low impedance state to refine the power efficiency of battery separators in batteries.

Industry-Academic Cooperation and Technological Advancement
The technology of electric vehicles and energy storage products is improving day by day. BenQ has been working with Taiwan’s Industrial Technology Research Institute (ITRI) and academia to develop and manufacture the best battery separator film products, from the product itself to the optimization of intelligent manufacturing and an MES manufacturing execution system, and has established a leading position as Taiwan’s largest battery separator film manufacturer, providing domestic and foreign battery cell manufacturers with peace of mind and solid support.


 
Specifications
  • Thickness+2~4um (each layer)
  • Gurley + 50 sec
  • Porosity does not change
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