Despite great advances in electrical vehicle battery has been made, we still don’t have a exceptional thermal management solution. Besides the reasons of battery pack structure, it seems to me that thermal interface materials has a great impact on thermal management.

The market of thermal gap filler(thermally conductive adhesive) looks very chaotic, many thermal gap fillers were called thermally conductive adhesive for structure bond, actually, thees are still thermal silicone encapsulant in essence. Moreover, some engineers don’t know much about thermal management materials and state requirements imprecisely, resulting in an unsatified trial and failed impression on domestic brands. Many manufacturers only concerned to thermal conductivity and laid less attention on other parameters, such as curing time, curing status, bond strength, maintenance.

GLPOLY thermal adhesive (thermally conductive adhesive) XK-D15 is an epoxy based, high performance and  good electrical insulation thermal adhesive which had been improved from traditional epoxy adhesive. Mix ratio is 1:1 by volume, just a few of manufacturers can accomplish it, for example, 3M thermally conductive epoxy adhesive mix ratio is 2:1. It is truth that data can be checked out from website.

GLPOLY thermally conductive adhesive (thermal gap filler) XK-D15 features 1) semi rigid after curing, protect battery modules by dampening vibration, 2) Improved bond strength greater than 8Mpa, 3) mix ratio 1:1 by volume, fit for dispensing equipment.

One of battery customers tested and compared materials among five suppliers, they checked thermal conductivity, electrical insulation, curing time and bond strength and so on. Two of suppliers were eliminated because of week bonding strength that it is unfavourable for process.

In the high temperature aging test, GLPOLY thermally conductive adhesive (thermal gap filler) XK-D15 performed normally, the variety of parameters are less than 10%. The competing one failed because of week bond strength, and moreover, its mix ratio is 2:1 which is unfavourable for customer’s robot system.

Besides stable thermal performance, GLPOLY thermally conductive adhesive provides reliable physical ptoperties. 1)filling gaps under low compressive forces, 2) thermal conductivity of 1.5W/mK, 3) strong structural bond in severe environment.

GLPOLY thermal management materials has been applied to military equipment because of high performance and reliable properties. GLPOLY Thermally conductive adhesive is on trial in battery pack in four major car manufacturers in China.

GLPOLY thermally conductive adhesive is ideal for EV battery pack thermal management providing high performance and strong structural bond.