What are the applications and functions of structural sealants in electric vehicle OBC on-board chargers?

On-board charger (OBC) refers to a charger that is fixedly installed on an electric vehicle and has the ability to safely and automatically fully charge the power battery. It is mainly used in electric vehicles that must be "plugged in" for charging, such as pure electric vehicles and plug-in hybrid electric vehicles.

Its main function is to convert single-phase 220V or three-phase 380V AC from the power grid or AC charging pile into DC power to charge the power battery.

In order to protect the circuits and components inside the OBC, improve the stability and reliability of operation, and thus ensure the safety of charging and long-term stable operation of electric vehicles, structural sealants are required to seal the OBC structure.

Structural sealants are an anti-aging, anti-fatigue, anti-corrosion, high-strength adhesive that can bond and seal structures. It has the characteristics of low modulus, low stress, high strength, excellent aging performance, and long service life.

It is mainly used for bonding and sealing of the on-board charger structure, which can achieve a highly reliable sealing effect. It can not only prevent external impurities such as dust, water vapor, salt spray and corrosive media from invading the interior of the on-board charger to damage the components, but also prevent internal parts from displacement, loosening and creeping, providing long-term and reliable protection for OBC.

The application and function of structural sealants on electric vehicle OBCs are mainly in the following aspects.

01. Environmental sealing

Structural sealants can be applied to the joints of the OBC shell to play the role of environmental sealing, prevent moisture, dust and other debris from entering the interior of the OBC, and protect the internal circuits and components from the influence of the external environment.

02. Sound insulation and shock absorption

Structural sealants can also be used to fill the internal cavities and gaps of the OBC to play the role of sound insulation and shock absorption, reduce the noise during the operation of the OBC, and protect the internal components from vibration.

03. Thermal conductivity

Some structural sealants have good thermal conductivity, which can effectively improve the heat dissipation effect of the OBC and maintain the normal working temperature of the components.

Dilong New Energy Technology Hebei Co., Ltd. has been deeply engaged in the field of new energy vehicle OBC for 15 years and is a global supplier of high-quality on-board charger series products.

Under the industry's increasingly high requirements for miniaturization of OBC products and working stability in harsh environments, Dilong has developed a variety of on-board charger products with different power levels and voltage levels, suitable for various electric vehicle applications from low voltage to high voltage 800V platforms. Such as power levels of 3.3kW, 6.6kW, 11kW, 22kW and 44kW, and voltage levels of 72V, 96V, 144V, 400V, 600V and 800V and other different models of OBC products.

They have a wide voltage input and output range, meet the charging standards of different countries, and perform well in waterproof, dustproof, shockproof and thermal conductivity. The power factor is greater than 0.998, the peak efficiency is as high as 96%, and it has the core advantages of small size, high safety, complete protection functions and long service life. It is very popular with customers in the global market.

Dilong New Energy has taken the lead in passing the IATF16949 quality management system certification, and its OBC products have been personally verified by more than 400 customers around the world. Its technology and quality levels are at the international leading level, and can meet the personalized needs of different customers for OBC products to the greatest extent.