What electromagnetic compatibility standards does the battery charger cable follow when working in a complex electromagnetic environment?
Publish Time: 2024-12-17
In today's environment where electronic devices are highly dense and electromagnetic signals are intertwined, the battery charger cable protects the charging process from electromagnetic interference and maintains the purity and stability of power transmission.From the perspective of common application scenarios, in a home environment, many electrical appliances are in the same room, and TVs, refrigerators, routers, etc. continue to emit electromagnetic radiation. At this time, the shielding effectiveness of the RC connector must reach at least 30dB - 40dB. This means that 90% - 99% of external interference signals can be effectively attenuated to prevent them from entering the charger circuit and affecting the battery charging accuracy, avoiding abnormalities such as overvoltage and undervoltage caused by weak electromagnetic fluctuations, and ensuring the healthy energy storage of small household appliances such as mobile phones and tablets.Entering the industrial workshop, high-power equipment such as welding machines and large motors are frequently started and stopped, and strong electromagnetic pulses are rampant. The shielding effectiveness of the RC connector must be advanced to a high standard of 60dB - 80dB. Such high-strength shielding is like an electromagnetic "iron wall", allowing only less than one thousandth or even one ten-thousandth of interference to break through the defense line, ensuring stable charging of industrial battery packs (such as forklifts and AGV car batteries), maintaining the power of the production line without "dropping the chain", and preventing equipment shutdown and product defective rate soaring due to abnormal charging.In the field of automotive electronics, especially electric vehicles, complex electronic systems in the car work together, coupled with electromagnetic radiation from traffic facilities outside the car, the shielding efficiency of RC connectors is required to be in the range of 40dB - 70dB. On the one hand, it blocks external interference to ensure safe and fast charging of on-board batteries, and on the other hand, it prevents electromagnetic leakage of charging cables from interfering with on-board communications and automatic driving assistance systems, laying a solid foundation for travel safety.In terms of compliance with electromagnetic compatibility standards, at the international level, the EU EN 55032/EN 55035 standards strictly regulate the electromagnetic compatibility performance of consumer and industrial electronic and electrical equipment. RC connectors need to accurately design shielding structures based on this, from controlling the conductivity of metal shell materials, optimizing grounding methods to setting the braiding density of the internal shielding layer, to fully meet the limits of radiation emission and immunity; the US FCC Part 15 standard focuses on electromagnetic interference suppression, urging products to suppress their own interference and resist external invasion, and battery charger cable components dare not slack off.Domestically, GB/T 9254 is equivalent to adopting international advanced concepts to guide products to exert effective shielding capabilities in different frequency bands (such as low-frequency magnetic fields and high-frequency electric fields), from the initial screening of shielding effectiveness of raw materials entering the factory to the random inspection of finished products simulating complex electromagnetic "examination rooms", the whole process is escorted to ensure that each cable containing RC connectors stands firmly in the electromagnetic wave, opens up an electromagnetic "pure land" for battery charging, and promotes the reliable operation of electrified equipment in various industries.
