Technologies over electrical vehicle has been developed for years, we still don’t have a perfect thermal management solution over electrical vehicle battery pack. Besides the reasons of battery pack structure, I think 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 filler was called thermal adhesive for structure bond, actually, they are still thermal silicone encapsulant in essence. Moreover, some engineers don’t know thermal materials very well and state requirements unclear, resulting a unsatified trial and failed impression on domestic brand. Many manufacturers only concerned to thermal conductivity and laid less attention on other parameters, such as curing time, curing status, bond strength, maintaince.
GLPOLY thermal gap filler (thermally conductive adhesive) XK-D25H is 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-D25H features 1) short curing time, draft in 5 minutes and become steady in 12 hours, 2) semi rigid after curing, protect battery modules by dampening vibration, 3) Improved bond strength greater than 3.7Mpa, 4) 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 longer curing time that it is unfavourable for process.
In the high temperature aging test, GLPOLY thermally conductive adhesive (thermal gap filler) XK-D25H 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 pressure, 2) low stress, 3) strong structure bond.
GLPOLY thermal materials has been applied in military equipment because of high performance and reliable properties. Thermal gap filler is on trial in battery pack in four major enterprises.
GLPOLY thermal materials help you keep battery pack cool and well performed.
