Hard to Network Dispersed EV Charging Stations? Industrial Routers Offer a New Path

After working on EV charging station projects for a while, you quickly realize: networking is not a minor detail—it's the bottleneck that can stall the entire project.

Scattered locations, strict urban approval processes, and high excavation costs—this is the norm for urban public charging stations. At highway service areas, underground parking garages, and remote township charging sites, signal coverage varies widely, and cabling is even more challenging. What's worse, once a charger goes offline, users can't scan the QR code or start charging—complaints follow immediately; billing data fails to upload, and financial reconciliation becomes problematic.

Behind all these issues lies the same core pain point: how to achieve stable, reliable, and cost-effective networking for dispersed charging station sites?

1. What Makes Charging Station Networking So Difficult

The networking requirements for charging stations are not complicated—essentially, just transmitting device status, charging progress, and billing information to the backend in real time. But the "last mile" to achieve this is fraught with obstacles.

Obstacle 1: No place to run network cables. Urban public charging stations are located roadside, in parking lots, and at commercial corners—most of these sites have no reserved network interfaces. Digging and laying new cables involve municipal approvals and road restoration, making both time and cost unpredictable. At highway service areas, charging piles are spread across wide spaces, and leasing dedicated lines is prohibitively expensive.

Obstacle 2: Complex signal environments. Signal strength is weak in underground garages, base station coverage is uneven at highway service areas, and 4G signals in remote towns are intermittent. Charging stations demand high network stability—a single disconnection means that transaction cannot be completed, and users may abandon the service entirely.

Obstacle 3: High maintenance costs. Dispersed sites mean maintenance personnel cannot be physically present at every charger. Reacting passively after user complaints not only delivers a poor experience but also incurs travel costs far exceeding the device's communication expenses.

These challenges compound to make charging station networking one of the most frustrating aspects of project execution.

2. How Industrial Routers Solve the Problem

For the networking challenges of dispersed charging stations, industrial routers offer a practical and viable solution path.

No network cables needed, saving cabling costs

Industrial routers come with built‑in 4G communication modules, transmitting data directly over cellular networks. Urban charging stations don't require road excavation; highway service areas don't need cross‑region dedicated lines. Deployment lead time shrinks from "waiting months for approvals" to "online as soon as powered on." For projects that need rapid site rollout, this efficiency gain is decisive.

Automatic reconnection on disconnection, real‑time link failover

The biggest fear for charging stations is going offline. Industrial routers feature automatic link detection—reconnecting within seconds after a disconnection and intelligently switching to backup links. Charging records and billing data are uploaded reliably with virtually no packet loss. This means that even if the carrier network experiences brief fluctuations, the user's charging session remains uninterrupted, and backend data stays complete.

Remote manageability, reducing maintenance costs

Through cloud platforms, maintenance personnel can remotely view each device's online status, signal strength, and data usage. Issues can be detected and addressed before users even notice them, eliminating reactive firefighting. For chargers scattered across urban areas, the maintenance efficiency gains from remote management are tangible.

3. ComIn I2100: Tailor‑Made for Charging Station Scenarios

When selecting equipment for charging station networking, several key factors must be considered: compact size (charging station internal space is limited), sufficient interfaces (needed to connect the charging controller and billing system), stable network (24/7 online), and controlled costs (a hard constraint for large‑scale deployment).

The ComIn I2100 4G Industrial Router from MovingComm is designed specifically for such scenarios.

Compact dimensions, fitting tight spaces

The internal space of charging stations is often extremely limited—it must accommodate the charging module, control board, billing unit, and still leave room for communication equipment. The ComIn I2100 features a compact design with a small footprint, making it easy to embed inside various types of charging stations without occupying excessive valuable space.

Sufficient interfaces, hassle‑free connectivity

The ComIn I2100 provides 1 Fast Ethernet WAN/LAN reusable port and 1 LAN port for connecting the charging controller and local maintenance terminal. It also supports RS232/RS485 serial ports for direct connection to the charging station's billing module and control board, eliminating the need for additional protocol conversion devices. This interface configuration is just right for charging station scenarios—neither too many nor too few, sufficient without waste.

4G full‑network compatibility, worry‑free network adaptation

The ComIn I2100 supports 4G full‑network compatibility, working with China Mobile, China Unicom, and China Telecom, automatically adapting to signal coverage in different regions. Whether in city centers or highway service areas, the device automatically selects the optimal network for access.

Industrial‑grade design, 24/7 reliability

Charging stations are often deployed outdoors—scorching heat in summer, freezing cold in winter, and humidity in rainy seasons. The ComIn I2100 is built with industrial‑grade components, supports wide‑temperature operation, and features multiple circuit protections including surge protection, ESD protection, and reverse‑connection protection, ensuring stable operation even in harsh environments. Combined with a hardware watchdog design, the device can automatically reboot and recover in case of anomalies, minimizing the need for manual intervention.

4. Deployment Architecture: A Picture Says It All

The networking architecture for charging stations is actually quite straightforward:

Device Layer: Each charging station embeds one ComIn I2100 industrial router, connecting to the charging controller and billing module via serial or Ethernet ports.

Transmission Layer: The industrial router transmits charging status, billing data, fault alarms, and other information to the cloud platform in real time over the 4G cellular network.

Platform Layer: The operations backend centrally manages the operating status, online status, and data consumption of all charging stations, enabling remote monitoring and intelligent maintenance.

The core advantage of this architecture is: no network cables required—every charging station is plug‑and‑play, online as soon as powered on.

5. Applicable Scenarios

This industrial‑router‑based charging station networking solution is suitable for:

• Urban public charging stations: Scattered sites roadside, in commercial districts, and around office buildings, lacking wired network infrastructure

• Highway service area charging stations: Wide coverage, dispersed sites, high cost of dedicated lines

• Underground parking garage charging stations: Complex signal environments requiring devices with strong network adaptability

• Township and remote area charging stations: Weak wired network infrastructure, with 4G as the only viable connectivity option

6. Conclusion

The networking challenge of charging stations is essentially a problem of "how to achieve low‑cost, highly reliable networking for dispersed sites." Industrial routers offer a practical answer—no network cables, automatic reconnection on disconnection, remote manageable and controllable—making both deployment and maintenance of charging stations significantly simpler.

For engineers and technical professionals advancing charging station projects, choosing the right communication equipment often saves far more trouble than spending extensive effort optimizing the network later. Getting the networking foundation solid means fewer surprises and more stability in charging station operations.

Product Website: Full specifications and parameters for the ComIn I2100 are available in the product center at MovingComm (www.movingcomm.com).