Automotive Emergency Call System (eCall)

The batteries used in eCall systems must maintain low power consumption during standby while ensuring a stable power supply so that the system is always ready to activate. Standby duration varies depending on vehicle models and system designs, typically lasting several months or even years.

These batteries must also endure extreme temperature conditions. In frigid regions, where winter temperatures drop to -20°C to -30°C or lower, they must power the system reliably to ensure activation and call completion. Conversely, under high temperatures, such as when a vehicle is exposed to prolonged sunlight or localized overheating, batteries must remain stable even at 60°C to 70°C or higher. They must prevent issues like rapid capacity decline, swelling, or leakage, ensuring the system operates seamlessly.

● High Reliability

The battery must provide stable power under all conditions, including collisions, fires, and flooding, ensuring the eCall system functions during critical moments to send distress signals.

● Wide Operating Temperature Range

Batteries must perform well in temperatures ranging from -40°C to +80°C (or broader) to meet the demands of eCall systems in diverse climates and seasons.

● Adequate Energy Reserve

The battery should have sufficient capacity to support at least one complete emergency call and data transmission, while maintaining standby status to ensure continued communication with rescue services.

● Long Lifespan and Low Self-Discharge Rate

Since eCall systems are not frequently used, batteries often remain in standby mode for extended periods. A long lifespan and low self-discharge rate minimize the risk of power depletion and reduce maintenance costs.

● High Safety Standards

Batteries must avoid hazards such as fires or explosions during accidents, ensuring the safety of passengers and the vehicle.

● Good Compatibility

The battery must integrate seamlessly with the vehicle's electrical system and the eCall system’s components, including charging and control circuits, ensuring smooth operation.

Grepow offers tailored battery solutions for eCall systems, including high-performance NiMH and LiFePO4 batteries. These batteries meet the above requirements and excel in extreme conditions:

● NiMH Batteries: Grepow’s proprietary NiMH technology supports an operating range of -40°C to 85°C, ensuring high safety and durability.

● LiFePO4 Batteries: Manufactured using advanced stacking technology, these batteries feature low internal resistance, stable performance, and extended cycle life.