Guangxi Donglai New Energy Technology Co. Ltd
A leading manufacturer of lithium-ion 18650 series batteries.
A reliable and innovative battery manufacturer.
Introduction
Donglai New Energy Technology Co., Ltd is a leading manufacturer of lithium-ion batteries, mainly for 18650 and 21700.
The company was founded as a modern new energy enterprise, focusing on research and development, manufacturing, and sales of high-quality batteries.
With three production bases, Donglai New Energy Technology Co., Ltd has become a major player in the battery manufacturing industry.
The company has three production bases in China, including:
- Guangxi Donglai New Energy Technology Co., Ltd.,
- Noda New Energy (Dongguan) Technology Co., Ltd.
- Jiangxi Hualiyuan Lithium Energy Technology Co., Ltd..
Each of these production bases has a daily production capacity of 130,000, 100,000 and 180,000 pieces of 18650 lithium batteries, respectively.
The annual output value of each production base is USD 20 million, USD 17 million, and USD 30 million, respectively.
Donglai New Energy Technology Co., Ltd has a total staff of over 400 and a daily output of 400,000 pcs.
Its batteries are widely used in various fields, such as lighting fixtures, household appliances, portable energy storage, mobile payment energy storage, power tools, garden tools, electric bicycles, and scooters, among others.
The company has obtained ISO9001 and ISO14001 certification, which demonstrates its commitment to quality and environmental management. Its batteries have also been certified by CQC, UL, CB, CE, BIS, KC, UN38.3, MSDS, BSMI, ROHS.
In summary, Donglai New Energy Technology Co., Ltd is a reliable and innovative battery manufacturer that offers high-quality lithium-ion 18650 series batteries. With its cutting-edge technology and a strong commitment to quality, the company has gained a reputation as a leader in the battery manufacturing industry.
We also welcome you to be our partner – A DLN 18650 Battery Distributor if you are interested in the lithium battery industry.
Technological Process
Step 1
+ Feeding System
↓
+ Glue Making
↓
+ Mixing
↓
+ Coating
↓
+ Rolling
↓
+ Slitting
↓
+ Staging
– Feeding System
↓
– Glue Making
↓
– Mixing
↓
– Coating
↓
– Rolling
↓
– Slitting
↓
– Staging
Step 2
Winding
↓
J/R Inserting
↓
Bottom Welding
↓
Beading
↓
Baking
↓
Injection
↓
Tab Welding
↓
Crimping
Step 3
Washing & Degreasing
↓
Shrink & Coding
↓
X-ray Checking
↓
Pre-charge
↓
OCVO
↓
Standing
↓
Formation
↓
Loading
Step 4
OCVO 1
↓
High-temp Baking
↓
OCVO 2
↓
Room- temp Baking
↓
OCVO 3
↓
Grading
↓
Grade Separation
↓
Storage
Step 5
OCVO 4 / R4
↓
Appearance Inspection
↓
Packing
↓
Shipment
Factory workshop
Mixing
Coating
Rolling
Slitting
Winding
Injection
Pre-charge
Packing
Export
R & D Center
Cycle life laboratory
Three performance cabinets are used for testing the charge and discharge performance of finished batteries, including tests such as 100, 300, and 500 cycles, cycle life, capacity, and platform tests.
Environmental performance laboratory
Two high-low temperature chambers and three ovens are used for testing the environmental adaptability performance of finished batteries, including tests such as high-temperature discharge, low-temperature discharge, high-temperature and high-humidity cycling, and fully charged high-temperature storage.
Electrochemical analysis laboratory
One electrochemical workstation is used for testing battery electrode chemical reactions, including tests such as potential analysis and alternating current impedance testing.
Physical property analysis laboratory
Equipment such as laser particle size analyzers, tapped density meters, specific surface area analyzers, moisture analyzers, conductivity meters, and pH meters are used for testing the physical properties of battery raw materials, including tests such as particle size, specific surface area, tapped density, and moisture.
Structural analysis laboratory
X-ray inspection equipment is used for observing and measuring the internal structure and defects of battery raw materials, semi-finished products, and finished batteries.
Morphology analysis laboratory
Equipment such as scanning electron microscopes with energy-dispersive spectrometers and image analyzers are used for observing and measuring the surface microstructure of battery raw materials, semi-finished products, finished batteries, and important tools.
Finished product analysis laboratory
Equipment such as inductively coupled plasma spectrometers and gas chromatography-mass spectrometers are used for analyzing the inorganic and organic components of battery raw materials.
Thermal analysis laboratory
Equipment such as simultaneous thermal analyzers and adiabatic calorimeters are used for differential thermal and thermogravimetric analysis of battery raw materials or synthetic materials, as well as for testing battery thermal stability, safety, energy efficiency, and cycle life.
Safety performance laboratory
Testing devices such as needle penetration, overcharge, short circuit, thermal shock, vibration, and heavy weight impact are used for testing the safety performance of finished batteries.
- The battery is tested with a simple tuned vibration of 0.8mm amplitude.
- The vibration frequency changes at a rate of 1Hz/min within the range of 10-55Hz, and recovers within 90-100min.
- The battery vibrates along three mutually perpendicular directions. For cells with only two axes, the cell shall be tested perpendicular to each axis.
- At the end of the test, the sample will not catch fire, explode or leak.
Vibration Test for Lithium ion Battery
Human Resources
Proportion of each department
- General worker — 54%
- Managerial staff — 23%
- Functional division — 23%
Proportion of research personnel
- Research personnel — 88.7%
- Others — 11.3%
Proportion of each age group
- 16 – 25 — 22%
- 26 – 35 —43%
- 35 – 34 — 20%
- Over 45 — 14%