In the first half of April 2024, the retail penetration rate of new energy passenger vehicles in mainland China exceeded 50% for the first time, and at the same time, the manufacturing of key components in the related industrial chain has also been booming. The power system of new energy vehicles mainly relies on power batteries for power supply, and with the continuous improvement of charging mileage per unit time, the working voltage and energy density of power batteries have also been greatly improved.
The traditional PET "blue film" battery cell surface coating technology has become more and more obvious in terms of safety and functional requirements, and will soon be replaced by a new UV insulation coating technology solution.
Dabao Paint's research on the surface insulation coating products of power battery cells has been developed two years ago, and on the basis of insulation, it has endowed the auxiliary cells with good thermal conductivity. At present, in the power battery factory of a new energy giant in China, the product application test of Dabao UV insulating thermal conductive coating is progressing very smoothly, which also means that the product layout of Dabao paint in the field of new energy passenger vehicles is about to be transformed into a new growth engine.
What are the advantages of Dabao UV insulating and thermal conductive coating compared with traditional PET "blue film"?
A brief analysis of the core factors that power battery factories are most concerned about:
According to the UL-94 American flame retardant material standard and test method, the traditional PET "blue film" is tested at a high temperature of 700 °C for the second time in a row, and the active combustion occurs, which cannot reach the V0 level. Dabao UV insulating and thermally conductive coating has successfully passed the requirements of the highest flame retardant grade V0, thereby improving the fire and flame retardant safety of vehicles.
Adhesive properties of battery cell components - shear strength destructive test:
Dabao Paint Central Laboratory adopts ASTM D1002 standard to conduct destructive tests on the adhesion performance of blue film and structural adhesive, cell shell, Dabao UV insulating thermal conductive coating and structural adhesive, and cell shell.
High and low temperature alternating test chamber (left) Constant temperature and humidity test chamber (right)
Insulation Properties - Dielectric Strength Test:
Dielectric strength is a very important indicator of the insulation of the cell coating material, Dabao paint central laboratory through the breakdown voltmeter test, Dabao UV insulation thermal conductive coating in this performance and the traditional PET "blue film" performance is the same, to ensure the new energy inside and outside the vehicle intelligent for electrical safety needs.
Breakdown voltmeter
Productivity:
If Dabao UV insulating and thermal conductive coating adopts automatic equipment spraying equipment, the production efficiency is actually equivalent to that of the traditional PET "blue film", which is conducive to the batch continuous production of power battery factories.
In fact, Dabao UV insulating thermal conductive coating has passed nearly 15 key physical property testing items, and has not only been coated in a new energy power battery factory.
With the successful entry of Xiaomi and Huawei into the new energy vehicle track, in addition to the intelligent interaction system integrating people and vehicles, with the improvement of 800V high-voltage fast charging and 800KM+ battery life hardware, the electrical safety of new energy vehicles will also be upgraded with the application of UV insulating and thermally conductive coatings in the power battery cell pack, and Dabao paint will usher in a good opportunity for rapid development in the wind and waves!