Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

As a technician deeply involved in charging pile testing on the frontline, my daily work makes one thing crystal clear: as people’s living standards rise, the demand for vehicles surges. Coupled with the growing popularity of environmental protection concepts, the electric vehicle (EV) industry is booming. Charging piles, as the “lifeline” of electric vehicles, directly determine whether EVs can operate stably and safely. Put simply, our job in testing is to &ld

As a charging pile designer deeply involved in industry projects, I've witnessed firsthand how electric vehicles (EVs) have become a pivotal force in China's new energy landscape. Decades of advancements in electronics have laid a solid foundation for EV development. The integration of V2G, energy storage technologies, and high-performance batteries not only facilitates battery swapping services but also drives the convergence of photovoltaics, energy storage, and intelligent charging systems&am

1. Detection Technology for Electric Vehicle Charging PilesEV charging piles are primarily divided into two categories:DC charging pilesandAC charging piles. Let's start with DC charging piles: they communicate with the EV's battery management system (BMS) and directly charge the power battery through the DC charging interface. AC charging piles, on the other hand, rely on the EV's AC charging interface and use the vehicle-mounted charger to complete the charging process. These two types of char

1. Fault CasesCase 1 (July 16, 2024)A district manager got a report of a charging pile outage at a square, affecting users and appliances. I, with O&M staff, found the pile was dead but charged EVs normally—yet the neutral wire/cabinet was live.Inspection steps: Relays, contactors, AC contactors checked → switching power supply had no output. Inverter, fuse, AC power tested → live current detected. Internal check: AC power and modules normal; secondary wiring inta

As new energy electric vehicles become increasingly popular, the number of supporting public charging piles is growing year by year. Whether the measurement value of AC charging piles for electric vehicles is accurate is directly related to the vital interests of the vast number of electric vehicle owners. So, conducting regular mandatory inspections of charging piles is particularly important. Below, combined with relevant regulations and practical work, I’ll share some experience and

As a frontline designer, I work on EV charging piles daily. Amid worsening global climate change and China’s rapid economic growth, green mobility like e - bikes and electric cars has boomed, yet charging issues have become a focal concern. The risky “Bypass Wire” charging has spurred huge demand for professional piles. Having taken part in the CNPC First Construction residential charging pile renovation, I’m sharing my hands - on experience.I. Industry Co