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SECONDARY CELL

Cylindrical Secondary Battery Business

Cylindrical Battery World Leader
Kumyang has been developing a secondary cylindrical battery 21700 with innovative technology. Our goal will be Cylindrical Battery World Leader by developing 46-series battery cells which will lead the EV market. We will open the new era of electric vehicles with global automobiles
Cylindrical Battery World Leader
We have manufacturing engineering and development to satisfy customer needs
Secondary Battery Business
Cylindrical Secondary Battery Manufacturing Process

The process of making cathode and anode

High Nickel (Ni 90 or more)

Application of single-crystal cathode materials

Mixing

Coating

Roll Press

Slitting

The process involves winding the electrode, inserting it into the can, injecting electrolyte, and sealing it

Winding

JR Insert

Beading

EL Filling

Crimping

Washing

Tubing

The process involves activating the battery with electrical energy and checking its stability

RT Aging

Formation

HT Aging

DCIR

Grading

Modularization process to suit an electric vehicle model

Cell inspection and assembly

BMS assembly

EOL inspection

Smart Factory

We have established an optimized smart factory to maximize facility productivity and efficiency of supply, delivery, and warehouse logistics

We have strengthened inspection by operating a deep learning process for Al-based quality monitoring

Process analysis

KPI management

Integrated control

Productivity and quality control

Predictive analysis of potential failures

Real-time integrated facility management

Main Application

Electric vehicle

E-Mobility

E-motorcycle

Energy Storage System(ESS)

21700 Cylindrical Battery Cell

The 21700 battery is enhanced battery with larger capacity and higher energy density than the 18650 battery

Increased more than 50% by applying NCMA Cathode materials

Decreased costs of the number of batteries for driving single EV (Key Point: 7,000 pcs → 3,000 pcs)

Lightweight battery

Extended hours of battery use

Enhanced design for flexibility

Enhanced stability and quality of battery

Manufacturing Model (Cylindrical)
Manufacturing Model (Cylindrical)
Cell Model Capacity(mAh) Nominal Voltage(v) Max Continuous Discharge Current(A) Remark
KY INR21700-40P 4,000 3.6 45 TBD
KY INR21700-42P 4,200 3.6 45 TBD
KY INR21700-49E 4,900 3.65 14.7
KY INR21700-48E 4,800 3.65 14.7
KY INR21700-50E 5,000 3.65 15
KY INR21700-53E 5,300 3.65 10.6 TBD


※ Standard size : Diameter 21mm & Height 70mm

46-series Cylindrical Battery Cell

Increase plus 5x the energy capacity more than the 21700

To increase plus 6x of power output

To extend the distance up to 16% in EV

To invest the development of cylindrical battery for meeting customer expectation

To save the cost through the technology for material and process

To be one of game changers in the global automotive industry

Manufacturing Model (Cylindrical)
Manufacturing Model (Cylindrical)
Item 21700 4680
Diameter (mm) 21 46
Height (mm) 70 80
Weight (g) 70 320
Cell unit per EV 4,400 960
Energy capacity (mAh) 5,000 25,000

Aerial view of Battery Factory (Expected to be done in the second half of 2024)

The area of land : 180,296㎡

Gross floor area : 124,479㎡

Building area : 71,596㎡