Abstract

A wall plug power adapter is integrated direct-plug AC-DC unit with automatic CC/CV switching. The wall plug power adapter embeds charge control logic for small lithium battery packs. This wall plug power adapter covers conversion efficiency, current accuracy and dynamic response parameters for portable energy storage and charging terminals.

1. CC/CV Working Principle

The wall plug power adapter integrates CC/CV control loop: constant voltage for no-load or fully charged batteries, constant current when battery voltage is low. The wall plug power adapter removes external charge management board, simplifies BOM and shrinks end-product size. The wall plug power adapter works for small lithium batteries like portable lights and mini power banks.

2. Output Accuracy and Efficiency Parameters

Constant voltage accuracy of the wall plug power adapter is within ±2%, constant current accuracy within ±5% to stabilize battery charging. Conversion efficiency of the wall plug power adapter above 87% at rated load to meet DOE Level VI. Output ripple of the wall plug power adapter limited below 110mV to reduce battery polarization and extend cycle life.

3. Charge Protection Parameters

The wall plug power adapter integrates battery reverse connection and overcharge protection. It reduces current to float charge once battery voltage hits threshold. The wall plug power adapter includes charge timeout protection; output latches if CC mode lasts too long to prevent abnormal battery heating. The wall plug power adapter limits full-load temperature rise under 45K for cool housing during long charging.

4. Environmental Compatibility Parameters

The wall plug power adapter operates at 0~40℃ and stored at -20~85℃, humidity 5%~90% non-condensing. The wall plug power adapter fine-tunes output automatically under low ambient temperature for stable cold charging. The wall plug power adapter uses V0 flame-retardant PC housing to mitigate thermal risk during charging.

5. Mass Production & Export Advantages

Every wall plug power adapter is tested for output voltage and current before delivery to guarantee batch consistency. The wall plug power adapter can obtain CE, FCC, UKCA certifications for charging products sold globally. Integrated plug design of the wall plug power adapter eliminates DC cord and cuts packaging & logistics cost.

Conclusion

The CC/CV dual-mode of the wall plug power adapter delivers simple power solution for small lithium battery chargers. If you need charge-specific wall plug power adapter, contact Simsukian for parameter review and sample testing.

References

1. IEC 62368-1 Audio/video, information and communication technology equipment safety standard

2. DOE Level VI External Power Supply Standard (US)

3. IEC 63002 Interoperability specifications for external power supplies