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Secondary battery Business
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Battery
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Secondary battery Business
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Secondary battery Business
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Secondary battery Business
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Secondary battery Business
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Secondary battery Business
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Secondary battery Business
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Secondary battery Business
Kumyang, a global icon of innovative technology, paving the way for the K-battery industry that will carry on the pride of K-Semiconductor and K-Korean culture
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.
Customizing Battery Solution
We have manufacturing engineering and development to satisfy customer needs.
Products Info
Vertically integrated companies related to secondary batteries
Kumyang is the world's first eco-friendly blowing agent manufacturer. Since 1955, we have accumulated extensive expertise and advanced technology in the fine chemical materials industry and are expanding into mineral resource development, battery materials, and secondary battery business.
Secondary battery business
Following the success of developing 21700 cylindrical battery for secondary battery with its innovative technology, Kumyang succeeded in developing 4695 cylindrical battery for the first time in Korea.
Secondary battery material business
For the secondary battery material business, which is a key component of automobile batteries, we are preparing for expanding demand by building processing facilities and obtaining approval for related products from customers.
Cathode material business
The cathode material is produced by a single crystal, dry process. The only company in the world to mass-produce ultra-high nickel (>95% Ni) and LMR (Li&Mn-rich) cathode materials in a dry production process.
01
Successful Development of the 21700 Battery in 2022
Kumyang, leveraging its long-established team of exceptional researchers and expert technical personnel in the battery industry, successfully developed the 21700 battery for power tools in 2022, based out of our R&D center. Following this, in October 2023, we achieved another milestone by producing the 21700 EV 5.0Ah battery and obtained commercial battery quality certifications (CB, UN38.3, UL). The technological achievements and experience gained during the research and development process have enabled us to build a system for producing cylindrical batteries. These batteries charge faster, last longer, offer enhanced safety, and reduce production costs, thereby bringing significant value to the market.
02
Successful Development of the First domestic 4695 Battery in 2024
With the goal of establishing global competitiveness in cylindrical batteries of the 46 series, Kumyang devoted itself to relentless research and development. As a result, we became the first in South Korea to successfully develop the 4695 cylindrical battery, often referred to as the "dream secondary battery." This groundbreaking innovation, unveiled in March 2024, not only demonstrates Kumyang's superior technological prowess and innovative development capabilities but also sets a new standard for the industry.
This remarkable achievement, led by a proud local company based in Busan, will forever be remembered as a monumental milestone in the history of South Korea's battery industry.
03
Successful Demonstration of 4-wheel Drive Vehicle Equipped with 4695 Battery in 2024
To prove the outstanding performance, safety, and durability of the 4695 cylindrical battery, Kumyang completed the first-ever demonstration of an all-wheel drive vehicle equipped with the 4695 battery in South Korea. This success collected notable attention from global automotive manufacturers.
04
Kumyang's Competitive Advantage in Cylindrical Battery
Kumyang possesses cutting-edge technology for manufacturing cylindrical secondary batteries. We have established a complete value chain from lithium raw materials to cathode materials and battery production. Additionally, we have secured a stable and sustainable technological foundation in battery materials through our lithium hydroxide/lithium carbonate processing businesses and battery material additive processing.
Cylindrical Secondary Battery Manufacturing Process
Introduction cylindrical battery product of Kumyang
21700Cylindrical Battery Cell
• The 21700 battery has a larger capacity and higher energy density than the 18650 battery.
• The capacity has been increased by more than 50% by increasing the volume and changing the cathode material.
• Improved battery lifespan, stability, and quality.
• Lightweight battery.
| Cell Model | Capacity(mAh) | Nominal Voltage(v) | Energy Density(wh/kg) | Max Continuous Discharge Current(A) | TBD |
|---|---|---|---|---|---|
| KY INR21700-50E | 5,000 | 3.7 | 272 | 15 | |
| KY INR21700-50E2 | 5,000 | 3.7 | 272 | 15 | |
| KY INR21700-56E | 5,600 | 3.65 | 301 | 16.8 | |
| KY INR21700-60E | 6,000 | 3.62 | 316 | 18 | ○ |
| KY INR21700-67E | 6,700 | 3.35 | 320 | 26.8 | ○ |
| KY INR21700-70E | 7,000 | 3.35 | 325 | 28 | ○ |
| KY INR21700-50P | 5,000 | 3.65 | 268 | 20 | ○ |
| KY INR21700-50P3 | 5,000 | 3.65 | 268 | 30 | ○ |
| KY INR21700-55P | 5,500 | 3.65 | 295 | 22 | ○ |
| KY IFR21700-25P | 2,500 | 3.2 | 129 | 37.5 | ○ |
| KY IFR21700-25P3 | 2,500 | 3.2 | 129 | 50 | ○ |
46-series Cylindrical Battery Cell
• It has 6.8 times the energy capacity, 7 times the power output, and an over 25% improvement in driving range than the 21700 battery.
• It's poised to be a 'Game Changer' in the global automotive industry
• Our advanced material and process technology ensures significant cost savings
• Our investment in cylindrical battery development for committing to meeting customer expectations
| Cell Model | Capacity(mAh) | Nominal Voltage(v) | Energy Density(wh/kg) | Max Continuous Discharge Current(A) | TBD |
|---|---|---|---|---|---|
| KY INR4680-270E | 27,000 | 3.67 | 283 | 81 | ○ |
| KY INR4695-340E | 34,000 | 3.65 | 289 | 102 | |
| KY INR4695-380E | 38,000 | 3.6 | 306 | 114 | ○ |
| KY INR4695-380E2 | 38,000 | 3.35 | 289 | 190 | ○ |
| KY INR4695-420E | 42,000 | 3.35 | 311 | 210 | ○ |
| KY INR46110-410E | 41,000 | 3.65 | 293 | 123 | ○ |
| KY INR46120-450E | 45,000 | 3.65 | 305 | 135 | ○ |
| KY INR46120-500E | 50,000 | 3.35 | 320 | 250 | ○ |
| KY IFR4695-160P | 16,000 | 3.2 | 144 | 160 | ○ |
| KY IFR4695-210E | 21,000 | 3.2 | 168 | 63 | ○ |