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Kokam

Li-ion Cell

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Beginning in 1999, Kokam has developed and manufactured more than several types of lithium ion batteries. Kokam batteries have been proven to deliver superior performance and quality to our customers. Due to our patented cell design, the energy density of our high energy type cell is greater and the high power type cells provide enhanced performance.

Cell Type

ADVANTAGES

Less heat creation & Efficient heat dissipation

A key factor in maintaining optimum performance of the cells lies in the temperature control capability. The large surface area and the thin cross-section of Kokam’s ionized aluminum pouch allow much more efficient thermal transfer than cylindrical or thick, plastic coated prismatic cells do. Furthermore, Kokam cells create less heat than standard NMC cells, allowing for more vigorous operations.

The heat dissipation is definitely correlated with safety. Kokam’s approach to safety is very serious and has therefore received various certifications: CE, UL, UN and DNV. Kokam’s efforts to achieve superior reliability and safety has been officially approved through these certifications and various defense qualification tests.

Low Temparature High

Kokam Pouch Type

vs

Hard and Heavy Prismatic Type

Low internal resistance

The exceptional cycle life and high discharge rate capabilities of Kokam’s lithium ion battery manufacturing technology are attributable to unique cell manufacturing techniques, such as the Z-folding design, illustrated below. The parallel pairs of electrodes within the cells offer unmatched low internal resistance, which results in less energy loss when charging or discharging in high temperatures.

  • Kokam HP: 0.4~0.5mΩ
  • The Z-folded stacking and special coating method significantly reduces internal resistance while increasing efficiency, power, and cycle life.
Z-Folding Technology
Z-Folding Technology
  • Reduces the surface side reaction
  • Decreases internal resistance and
    retains the material performance
Z-Folding Technology Z-Folding Technology Z-Folding Technology

Tab A

Each side of pouch opens under
high pressure for safe gas ventilation

Separator B

Increases the physical strength,
less shrinkage or break down at high
temp / Increase insulation function
between cathode and anode

Electrode C

  • More effective heat dissipation
  • No deformation Core and Good Dimensional Stability
A : Tab

Each side of pouch opens under high pressure for safe gas ventilation

B : Separator

Increases the physical strength, less shrinkage or break down at high temp / Increase insulation function between cathode and anode

C : Electrode
  • More effective heat dissipation
  • No deformation Core and Good Dimensional Stability

High discharge performance

Due to the low internal resistance and optimized design for minimizing energy loss, Kokam’s lithium ion cells have achieved high discharge performance. With their extraordinary discharging characteristics, Kokam’s cells show reliable performance even at a high discharge rate. They are an excellent choice for building up a high-efficiency battery system with their proven performance in various C-rate conditions, resulting in reduction of the total operation cost.

Discharge Performance of High Power NMC Cells
Relative
Capacity (%)

SPECIFICATION

High Power Cell

Model KCL216057PN1 KCL255085PN1 KCL355087PS0* KCL355098PS0* Remark
Type High Power *Scheduled to be released by 4Q 2022
Nominal Capacity (Ah) 57 85 87 98
Average Voltage (Vdc) 3.68 3.68 3.68 3.68  
Nominal Energy (Wh) 209.7 312.8 320.1 360.6  
Cell Dimension Width (mm) 226 268 177 177 Unfolded
Length (mm) 227 265 357 357 Excluded tab length
Thickness (mm) 11.4 11.9 13.8 15.3 0.5kgf/㎠, SOC 25±5%
Energy Density Gravity (Wh/kg) 190 194 188 190  
Volume (Wh/L) 459 465 462 468 Excluded tab and seal
Current (A) Charge Cont. 171 (3C) 255 (3C) 348 (4C) 392 (4C) @25±3℃
Discharge Cont. 456 (8C) 680 (8C) 783 (9C) 882 (9C)
Peak 570 (10C) 1,020 (12C) 1,044 (12C) 1,176 (12C) ≤10sec , ≥SOC 50%
Cycle Life at 90% DOD ≥ 6,000 ≥ 6,000 ≥ 6,000 ≥ 6,000 @25±3℃, 70% remaining capacity
Certification UN 38.3, IEC 62619 UN 38.3, UL 1642, UL 1973, IEC 62619 UN 38.3, UL 1642, UL 1973, IEC 62619, IEC 62620, UL 9540A
Technical Data 57Ah 85Ah 87Ah 98Ah
  • Type High Power
  • Nominal Capacity (Ah) 57
  • Average Voltage (Vdc) 3.68
  • Nominal Energy (Wh)209.8
  • Cell Dimension - Width (mm) 226
  • Cell Dimension - Length (mm) 227
  • Cell Dimension - Thickness (mm) 12.2
  • Energy Density - Gravity (Wh/kg) 180
  • Energy Density - Volume (Wh/L) 429
  • Current (A) - Charge - Cont. 171 (3C)
  • Current (A) - Discharge - Cont. 456 (8C)
  • Current (A) - Discharge - Peak 570 (10C)
  • Cycle Life at 90% DOD ≥ 6,000
  • Certification UN 38.3, UL 1642
  • Technical Data 57Ah
  • Type High Power
  • Nominal Capacity (Ah) 85
  • Average Voltage (Vdc) 3.68
  • Nominal Energy (Wh) 312.8
  • Cell Dimension - Width (mm) 268
  • Cell Dimension - Length (mm) 265
  • Cell Dimension - Thickness (mm) 11.9
  • Energy Density - Gravity (Wh/kg) 194
  • Energy Density - Volume (Wh/L) 465
  • Current (A) - Charge - Cont. 255 (3C)
  • Current (A) - Discharge - Cont. 680 (8C)
  • Current (A) - Discharge - Peak 1,020 (12C)
  • Cycle Life at 90% DOD ≥ 6,000
  • Certification UN 38.3, UL 1642, UL 1973, IEC 62619
  • Technical Data 85Ah
  • Type High Power
  • Nominal Capacity (Ah) 87
  • Average Voltage (Vdc) 3.68
  • Nominal Energy (Wh) 320.1
  • Cell Dimension - Width (mm) 177
  • Cell Dimension - Length (mm) 357
  • Cell Dimension - Thickness (mm) 13.8
  • Energy Density - Gravity (Wh/kg) 188
  • Energy Density - Volume (Wh/L) 462
  • Current (A) - Charge - Cont. 348 (4C)
  • Current (A) - Discharge - Cont. 870 (10C)
  • Current (A) - Discharge - Peak 1,044 (12C)
  • Cycle Life at 90% DOD ≥ 6,000
  • Certification UN 38.3, UL 1642, UL 1973, IEC 62619, IEC 62620, UL 9540A
  • Technical Data 87Ah
  • Type High Power
  • Nominal Capacity (Ah) 98
  • Average Voltage (Vdc) 3.68
  • Nominal Energy (Wh) 360.6
  • Cell Dimension - Width (mm) 177
  • Cell Dimension - Length (mm) 357
  • Cell Dimension - Thickness (mm) 15.3
  • Energy Density - Gravity (Wh/kg) 190
  • Energy Density - Volume (Wh/L) 468
  • Current (A) - Charge - Cont. 392 (4C)
  • Current (A) - Discharge - Cont. 980 (10C)
  • Current (A) - Discharge - Peak 1,176 (12C)
  • Cycle Life at 90% DOD ≥ 6,000
  • Certification UN 38.3, UL 1642, UL 1973, IEC 62619, IEC 62620, UL 9540A
  • Technical Data 98Ah
  • Type *Scheduled to be released by 4Q 2022
  • Nominal Capacity (Ah) *Scheduled to be released by 4Q 2022
  • Cell Dimension - Width (mm) Unfolded
  • Cell Dimension - Length (mm) Excluded tab length
  • Cell Dimension - Thickness (mm) 0.5kgf/㎠, SOC 30±5%
  • Energy Density - Volume (Wh/L) Excluded tab and seal
  • Current (A) - Charge - Cont. @25±3℃
  • Current (A) - Discharge - Cont. @25±3℃
  • Current (A) - Discharge - Peak ≤10sec , ≥SOC 50%
  • Cycle Life at 90% DOD @25±3℃, 70% remaining capacity

High Energy Cell

Model KCL216060EN1 KCL255103EN1 KCL355103ES0* KCL355114ES0* Remark
Type High Energy *Scheduled to be released by 4Q 2022
Nominal Capacity (Ah) 60 103 103 114
Average Voltage (Vdc) 3.68 3.68 3.68 3.68  
Nominal Energy (Wh) 220.8 379 379 419.5  
Cell Dimension Width (mm) 226 268 177 177 Unfolded
Length (mm) 227 265 357 357 Excluded tab length
Thickness (mm) 11.2 12.8 14.3 15.6 0.5kgf/㎠, SOC 25±5%
Energy Density Gravity (Wh/kg) 205 218 216 220  
Volume (Wh/L) 493 523 526 535 Excluded tab and seal
Current (A) Charge Cont. 120 (2C) 103 (1C) 103 (1C) 114 (1C) @25±3℃
Discharge Cont. 180 (3C) 206 (2C) 206 (2C) 228(2C)
Peak 300 (5C) 309 (3C) 309 (3C) 342 (3C) ≤10sec , ≥SOC 50%
Cycle Life at 90% DOD ≥ 6,000 ≥ 6,000 ≥ 6,000 ≥ 6,000 @25±3℃, 70% remaining capacity
Certification UN 38.3, UL 1642 UN 38.3, UL 1642, UL 1973, IEC 62619 UN 38.3, UL 1642, UL 1973, IEC 62619, IEC 62620, UL 9540A
Technical Data 60Ah 103Ah 103Ah 114Ah
  • Type High Energy
  • Nominal Capacity (Ah) 60
  • Average Voltage (Vdc) 3.68
  • Nominal Energy (Wh) 220.8
  • Cell Dimension - Width (mm) 226
  • Cell Dimension - Length (mm) 227
  • Cell Dimension - Thickness (mm) 11.2
  • Energy Density - Gravity (Wh/kg) 205
  • Energy Density - Volume (Wh/L) 493
  • Current (A) - Charge - Cont. 120 (2C)
  • Current (A) - Discharge - Cont. 180 (3C)
  • Current (A) - Discharge - Peak 300 (5C)
  • Cycle Life at 90% DOD ≥ 6,000
  • Certification UN 38.3, UL 1642
  • Technical Data 60Ah
  • Type High Energy
  • Nominal Capacity (Ah) 70
  • Average Voltage (Vdc) 3.67
  • Nominal Energy (Wh) 256.9
  • Cell Dimension - Width (mm) 226
  • Cell Dimension - Length (mm) 227
  • Cell Dimension - Thickness (mm) 12.4
  • Energy Density - Gravity (Wh/kg) 219
  • Energy Density - Volume (Wh/L) 516
  • Current (A) - Charge - Cont. 70 (1C)
  • Current (A) - Discharge - Cont. 140 (2C)
  • Current (A) - Discharge - Peak 210 (3C)
  • Cycle Life at 90% DOD ≥ 1,500
  • Certification UN 38.3, IEC 62619
  • Technical Data 70Ah
  • Type High Energy
  • Nominal Capacity (Ah) 103
  • Average Voltage (Vdc) 3.68
  • Nominal Energy (Wh) 379
  • Cell Dimension - Width (mm) 268
  • Cell Dimension - Length (mm) 265
  • Cell Dimension - Thickness (mm) 12.8
  • Energy Density - Gravity (Wh/kg) 211.8
  • Energy Density - Volume (Wh/L) 506.9
  • Current (A) - Charge - Cont. 103 (1C)
  • Current (A) - Discharge - Cont. 206 (2C)
  • Current (A) - Discharge - Peak 309 (3C)
  • Cycle Life at 90% DOD ≥ 6,000
  • Certification UN 38.3, UL 1642, UL 1973, IEC 62619
  • Technical Data 103Ah
  • Type High Energy
  • Nominal Capacity (Ah) 103
  • Average Voltage (Vdc) 3.68
  • Nominal Energy (Wh) 379
  • Cell Dimension - Width (mm) 177
  • Cell Dimension - Length (mm) 357
  • Cell Dimension - Thickness (mm) 14.3
  • Energy Density - Gravity (Wh/kg) 215
  • Energy Density - Volume (Wh/L) 528
  • Current (A) - Charge - Cont. 103 (1C)
  • Current (A) - Discharge - Cont. 206 (2C)
  • Current (A) - Discharge - Peak 309 (3C)
  • Cycle Life at 90% DOD ≥ 6,000
  • Certification UN 38.3, UL 1642, UL 1973, IEC 62619, IEC 62620, UL 9540A
  • Technical Data 103Ah
  • Type High Energy
  • Nominal Capacity (Ah) 114
  • Average Voltage (Vdc) 3.68
  • Nominal Energy (Wh) 419.5
  • Cell Dimension - Width (mm) 177
  • Cell Dimension - Length (mm) 357
  • Cell Dimension - Thickness (mm) 15.5
  • Energy Density - Gravity (Wh/kg) 220
  • Energy Density - Volume (Wh/L) 535
  • Current (A) - Charge - Cont. 114 (1C)
  • Current (A) - Discharge - Cont. 228 (2C)
  • Current (A) - Discharge - Peak 342 (3C)
  • Cycle Life at 90% DOD ≥ 6,000
  • Certification UN 38.3, UL 1642, UL 1973, IEC 62619, IEC 62620, UL 9540A
  • Technical Data 114Ah
  • Type *Scheduled to be released by 4Q 2022
  • Nominal Capacity (Ah) *Scheduled to be released by 4Q 2022
  • Cell Dimension - Width (mm) Unfolded
  • Cell Dimension - Length (mm) Excluded tab length
  • Cell Dimension - Thickness (mm) 0.5kgf/㎠, SOC 30±5%
  • Energy Density - Volume (Wh/L) Excluded tab and seal
  • Current (A) - Charge - Cont. @25±3℃
  • Current (A) - Discharge - Cont. @25±3℃
  • Current (A) - Discharge - Peak ≤10sec , ≥SOC 50%
  • Cycle Life at 90% DOD @25±3℃, 70% remaining capacity

PIONEER OF LITHIUM ION

BATTERY TECHNOLOGY

The superior performance of Kokam’s lithium ion batteries is a result of Kokam’s distinct manufacturing technology. Marked by Kokam’s own patented Z-folding manufacturing technology and using a highly advanced form of lithium ion and thin film laminations, Kokam’s manufacturing technology not only results in a time efficient manufacturing process, but also enhances the overall performance and quality of cells. Since the introduction of its lithium ion batteries to the market, Kokam has developed a variety of cells, ranging from 57Ah to 114Ah, to its customers.
Kokam aims to solve the limitations associated with conventional lithium ion technologies, including cycle and calendar life, safety, recharge time, power delivery, and the ability to operate in harsh temperatures. Kokam manufactures high performing lithium ion batteries with relentless precision without compromising performance.

KEY STRENGTHS

  • High Power Performance
  • High Charge / Discharge Energy Efficiency
  • High Energy Density
  • High Gravimetric and Volumetric Power Density
  • Light Weight
  • Excellent Power-to-Energy Balance
  • Longer Cycle and Calendar Life
  • Low Self-Discharge Rates
  • Low Impedance and Low Heat Generation

APPLICATIONS

  • ESS
  • UPS
  • EV
  • Defense
  • Marine

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