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Power Battery Thermally Conductive Pad How To Choose The Appropriate Compression?
- Jul 12, 2017 -

The current power battery thermal management program is the main application of the product is a thermal battery Thermally Conductive Pad, the author of a customer to GLPOLY asked XK-P20 power battery Thermally Conductive Pad, in understanding the technical parameters of XK-P20 made the following requirements, thermal conductivity 2.0W / MK, withstanding voltage> 10kV / mm, thermal resistance <0.7 ℃ in2 / W, these requirements for our GLPOLY is very easy to do.

Subsequently, the customer made another request that the need for power battery Thermally Conductive Pad at 12.5psi (87Kpa) pressure compression reached 30%, indicating that the hardness of the material is relatively low, for us there is no technical difficulty. Low hardness in the production will not be a problem, but in the assembly will be pulled because of deformation. Because we have such cases, all the parameters in the technical assessment of no problem, and in the terminal assembly problems arise. Products on both sides of the PET protective film, tearing the PET protective film will pull the product deformation, size has changed, eventually leading to the program was rejected, a lot of waste of manpower, material and time. So we made a special note to the customer: power battery Thermally Conductive Pad is very soft paste service is indeed better, contact resistance will be smaller, the heat conduction is beneficial. But the power battery Thermally Conductive Pad is too soft is not conducive to the construction, because the deformation will change the product size, especially the thickness, thickness changes make designers put more energy to focus on the gap between heat and heat sink. But at 12.5psi (87Kpa) pressure to 30% compression, such hardness should not be unable to install. So we made in the proofing when we provide two power battery Thermally Conductive Pad products, A hardness Shore00 50,12.5 psi (87Kpa) pressure compression 30%, moderate hardness, good service and easy construction, is the current GLPOLY supply The largest amount of a; B hardness Shore00 60, hardness slightly higher, not easy to deformation, can improve the construction efficiency.

After we have sent two samples, we have received the requirements of customer proof C, the customer requirements to reduce the hardness of the product, 12psi (80Kpa) pressure compression 40%, hardness Shore00 30 or so, which we made a deformation The amount of assessment, 2.5mm thickness of the power battery Thermally Conductive Pad in the skilled staff evenly tear the protective film under the conditions of the deformation due to tension, the thickness will be reduced to 2.2mm-2.1mm, so soft power battery Thermally Conductive Pad in the assembly Will result in a very large deformation and non-performing rate, and reduce the construction efficiency and increase costs. After listening to our instructions, the customer still insists on testing the thermal battery pads. Because the customer application interface is very rough, the need for very soft material to improve paste service, optimize the heat conduction effect. We understand and support the customer's request, three power battery Thermally Conductive Pad samples completed in two days and served the customer specified address, so the rapid response speed Another customer is very unexpected, the customer said before they in other manufacturers to sample samples to receive the general need A week.

After a week of testing, customers believe that the B section of the power battery Thermally Conductive Pad slightly higher hardness, sticky slightly worse; C hardness is too low can not be effectively assembled, A power battery Thermally Conductive Pad Shore00 50 hardness is best for power battery pack application.