Liquid cooling links the electrical and thermal problems of a charging system to a fluid interface. Tolerance mismatch between the busbar, cold plate, insulation and terminal can create hot spots, leaks or difficult service.
Draw the complete heat and current path
Mark the path from power module to cable and the path from conductor to cold plate, coolant and heat exchanger. Interfaces shared by both paths deserve special checks for flatness, compression and dielectric isolation.
Keep sealing interfaces away from electrical contacts
Cold-plate grooves, fittings and hoses need assembly-tool space; busbar ends must not be contaminated by sealants. Use separate leak, pressure, temperature-rise and voltage-drop gates before combined system validation.
- Test at minimum flow and maximum ambient
- Repeat end voltage-drop and seal checks after service removal
- Give Cu-Al transitions their own moisture and corrosion protection
Prepare packaging for field replacement
Protect ends from impact and tubing interfaces from external load during transport. Labels should show flow direction, installation orientation, lot and critical torque so field teams can trace the assembly.