Thermal conductive material application in electric vehicle
With the increasing shortage of traditional energy and the increasing pressure of environmental protection, electric vehicles are more and more widely used in daily life. On the basis of electric vehicle, battery, motor and electronic control are produced. These new components have also generated a lot of new demand, which has derived the application of new adhesives, sealants and thermal conductive materials. In particular, thermal conductive materials play the functions of heat conduction, insulation, filling protection, shockproof and shock absorption in the thermal management design of new energy electric vehicles to avoid damage to automobile parts.
Battery Pack:
During the operation of the power battery, if the heat generated is not dissipated in time, the internal temperature will continue to rise. When the temperature exceeds a certain temperature, the diaphragm inside the cell will fail, resulting in a short circuit, resulting in accidents such as ignition and combustion of the cell. In order to ensure the uniformity of the internal temperature of the cell, efficient heat dissipation of the power battery is the primary task. Using thermal conductive epoxy structural adhesive or thermal conductive polyurethane structural adhesive to bond the cell and battery pack can not only realize the connection of various materials, but also increase the heat transfer area, help heat conduction and ensure the stable, efficient and safe operation of the electric drive system.
At the same time, between the heatsink module and the cold plate, we usually use thermal conductive gel to make up for the flatness of the cold plate, and make the contact between the module and the cold plate more complete. The liquid properties of thermal conducting gels can be tightly bonded to all kinds of uneven interfaces, filling large gaps and holes, effectively reducing the thermal resistance of the interface, and improving the thermal conductivity and thermal conductivity uniformity.
Moreover, it can easily penetrate into the gap between irregular elements and solidify into high-performance elasticity. It has excellent structural practicability and surface adhesion of structural parts, improves more efficient heat conduction, and meets the comprehensive requirements of electrical insulation, flame retardant, high temperature resistance, impact resistance, stress reduction and stability.
Battery management system:
Battery management system (BMS) is the link between power battery pack and new energy electric vehicle. Its main functions include: real-time battery condition monitoring, online diagnosis and early warning, charge and discharge control, balance management and thermal management. The chip and circuit board itself will produce a certain amount of heat because they need to participate in a large number of operations and signal control. Because the thermal conductive gasket has good insulation, the thermal conductive gasket can be used at the heat source of the circuit board for heat conduction, so as to reduce the temperature of the BMS and ensure the efficient operation of the BMS.
In the thermal management of electric vehicles, thermal conductive materials play a great role. In order to ensure their high thermal conductivity, impact resistance, high temperature resistance and stress reduction, it is particularly important to choose heat conductive filler with excellent performance when preparing thermal conductive material.
