The OBC (On-Board Charger) is a car-mounted device used for slow charging of electric vehicles. It is installed internally and is connected to an AC charging station to convert AC power into DC power for slow charging the vehicle's battery.

Newer designs of OBCs have integrated multiple functions, including bidirectional power conversion and DC-DC conversion, making the overall design more compact. While the compact design offers advantages, it also presents challenges in terms of heat management. Integrated and multifunctional chargers generate additional power load due to DC-DC conversion, leading to increasingly critical thermal management issues for OBCs.

To reduce overall size, weight, and cost, all electronic components of the multifunctional OBC need to be enclosed in a sealed metal casing. This requirement necessitates that the heat-generating electronic components/chips/MOSFETs make contact with the inner walls of the metallic casing to facilitate effective heat transfer.

To ensure sufficient contact and heat transfer between the aforementioned heat load and the inner walls of the metallic casing, a thermal management material is needed. This material should not only provide excellent thermal conductivity but also possess electrical insulation properties to fill the air gaps between the device and the heat sink's uneven surfaces. Products such as thermal conductive gel, potting compound, and thermal pads offer reliable environmental performance, good workability, and different levels of thermal conductivity to meet various customer requirements.