Laboratory Accreditation Audits and Batch Traceability in Air Dangerous Goods Compliance
Validating ISO 17025 lab schedules and continuous cell batch traceability prevents air transport cargo rejection and shifts regulatory liability to suppliers.
Secondary Packaging
Meaning
Protective enclosure holds and organizes multiple individual battery cells into a functional module or pack to shield them from external hazards. In battery systems, secondary packaging provides the necessary structural support and electrical insulation for the cells. This packaging is designed to prevent physical damage during transport and operation.
Mechanical Protection
Cell swelling during charging puts mechanical stress on the pack assembly. The secondary packaging must contain these forces and hold the cells in place while absorbing external vibrations and impacts from road use. This structural design involves using high-strength plastics or lightweight aluminum frames to ensure that the module does not fail under high-stress conditions.
Thermal Integration
Heat must be dissipated quickly to maintain a uniform temperature across all cells in the pack. The design of the secondary packaging incorporates cooling plates and thermal interfaces to manage heat flow and prevent thermal propagation between cells. This thermal control is essential for preventing a single failing cell from triggering a chain reaction of failures across the entire module.
Regulatory Sourcing
Sourcing managers must select materials that comply with fire safety and shipping regulations. These materials must be lightweight to maximize the specific energy of the overall pack while maintaining high mechanical strength. This selection process directly affects the shipping weight and the final cost of the battery system.