Why coolant filtration is critical for maintaining EV cooling systems
Filtration is critical for maintaining the long term health, efficiency and reliability of any EV cooling system. Our demonstration vehicle in this video uses two types of filters, each serving a different purpose within the coolant loops.
Deionizing filters
The first type of filter shown in the video is the deionizing filter or DI filter. Over time, the electrical conductivity of the coolant can increase as ions are introduced through component leaching, corrosion or system contamination. In cooling loops containing fuel cells, this elevated conductivity can trigger fault codes, reduce performance or even cause the system to shut down. DI filters actively remove these ions from the coolant, helping to maintain low conductivity in the loop. This preserves system efficiency, protects sensitive electronics and extends component life. DI filters are compact, easy to integrate and feature a serviceable cartridge that can be replaced when saturated. When combined with conductivity monitoring and diagnostics over CAN, we can predict service intervals, avoiding costly unplanned shutdowns.
Magnetic inline filters
The second filter type shown in the video is a magnetic inline filter, used to capture ferrous particles circulating in the coolant stream. These metallic contaminants can originate from a variety of sources such as component erosion, pump wear or manufacturing debris. Left unchecked, these particles can damage seals, erode narrow cooling channels, reduce heat exchanger efficiency and impair valve function. Magnetic filters can be placed in the cooling loop before sensitive components, such as batteries, which prevents downstream damage and increases the interval between servicing. Our magnetic filters are equipped with a removable mesh for simple maintenance and inspection. Particle filters are available in magnetic and non-magnetic variants, as they sit in the main flow path, sizing the mesh size is of paramount importance to safe and long service life.
The combination of these two filter types maximises system uptime, reducing wear and keeping the system functioning by ensuring clean coolant is travelling through the loops. To discuss your coolant filtration requirements, please get in touch.