Pioneer of Lithium Polymer Battery Technology

Starting from 1998, Kokam has developed and manufactured more than 80 different kinds of Superior Lithium Polymer Battery (SLPB) beginning in 1998. The Superior Lithium Polymer Battery (SLPB) has been proven to deliver superior performance and quality to our customers. Due to the patented cell design, the energy density of the High Energy type SLPB’s is extremely high, while the high power type SLPB’s.

The superior characteristics of Kokam’s Lithium polymer battery are built using Kokam’s distinct manufacturing technology. Marked by the patented Z-folding manufacturing technique and using the most advanced form of Lithium Polymer and thin film laminations, Kokam’s manufacturing technology not only results in a use of and time-efficient manufacturing process, but also enhances the overall performance and quality of the SLPB. During more than 21 years of Lithium polymer battery manufacturing experience, Kokam has brought a variety of cells to the market and range in size from 3.2Ah to 240 Ah.

Advantages of Kokam Lithium Polymer Battery

Features

Kokam set about to solve the limitations associated with conventional lithium-ion technologies, including cycle and calendar life, safety, recharge time, power delivery, and ability to operate in extreme temperatures.The performance of Kokam Lithium polymer battery surpasses the other existing batteries in the market today.

- Heat Dissipation

Below shows the additional surface area and much shorter distance that heat must travel to exit the Kokam pouch cells, as compared to a similar capacity cylindrical cell.

The battery cell is the basis of an Energy Storage System. A key factor in maintaining optimum performance is to keep the cell temperature within the designed range. The very large surface area and thin cross-section of Kokam’s polymerized aluminum pouch construction allows much more efficient thermal transfer than cylindrical or thick, plastic coated prismatic cells do.

The heat dissipation is also correlated with safety. Kokam’s approach to safety is very serious and has therefore received various certifications such as CE, UL, UN, S-Mark, SBA and KBIA. Kokam’s effort to achieve reliability and safety has been recognized through its certifications in various defense qualification tests.

- Low Internal Resistance

The Kokam Lithium Polymer battery manufacturing technology’s exceptional cycle life and high discharge rate capability are attributable to unique cell construction techniques, such as the Z-fold design, illustrated in above. The cell’s parallel pairs of electrodes offer unmatched low internal resistance, which results in less energy loss in high temperature heat as the cell charges and discharges.

- Kokam UHP: 0.3~0.35mΩ
50% lower Internal Resistance compared to other battery manufacturers
– Z-fold stacking and special coating method significantly reduces internal  resistance  and increases efficiency, power, and cycle life.

- Heat dissipation

        •    UHP Cell creates less heat than standard NMC cells, allowing for more vigorous operations

- High Efficiency

Due to the low internal resistance and optimal design for minimizing the loss, Kokam’s Lithium polymer battery has achieved extremely high efficiency rates (>96.5%) @ 0.5C-rate discharge/charge). The high efficiency of Kokam’s cells reduces the total operating cost in a battery system.

        •    Round Trip Efficiency of NMC cells

Kokam Cell Types

Over 80 Lithium Polymer Batteries have been manufactured and integrated into various applications including ESS, Defense, Marine, Aviation, Telecom, EV, Industrials. Upon 30 years of accumulated field experience, Kokam have supplied aggregate of over 708MWh battery system around the world. The Kokam cell has been recognized as outstanding technology – reliable and well integrated.

Technology Specifications