EN 
DE 
ES 
KO 
How to Choose Battery Liquid Cooling Plate Insulation ？
How to Choose Battery Liquid Cooling Plate Insulation? Selecting insulation materials for battery liquid cooling plates is crucial to ensuring the safety, efficiency, and longevity of electric vehicle (EV) battery systems. Given the increasing performance demands and higher operational voltages in modern EVs, traditional insulation methods such as PET films (“blue film”) are now being replaced by more advanced solutions, including UV-coated insulation materials. In this guide, we explore the benefits and challenges of using UV-coated insulation, comparing it with other commonly used materials. Additionally, we’ll discuss critical considerations such as application process, spray thickness, and the unique advantages of UV coatings in the context of electric vehicle battery systems. Table of Contents From PET to UV Coatings Historically, PET-based insulation films (often referred to as “blue films”) were the industry standard for battery insulation. However, with the advent of higher energy densities and voltages—especially with the emergence of 800V platforms—these traditional materials have started to fall short in several key performance areas, including adhesion and electrical breakdown. Why Are PET “Blue Films” Falling Behind? The widespread use of “blue films” for insulating battery cells stems from their chemical resistance, insulation properties, and tensile strength. However, there are significant limitations: Adhesion Issues: Blue films have limited adhesion strength, especially in high-vibration environments like automotive applications. The adhesive layers (PSA) used in blue films can easily undergo cohesive failure, which weakens the overall structural integrity of the battery pack. As a result, battery cells are more likely to detach, leading to potential short-circuiting. High-Voltage Platforms: With the push for faster charging times and higher energy outputs, battery systems are moving to 800V platforms. The limited dielectric strength and adhesion properties of blue films make them increasingly inadequate for these high-voltage applications. UV-Coated Insulation: The New Standard In response to these limitations,…
