Why does an electric vehicle with power not move on rainy days?

[VonIsaac]

Here are the reasons why an electric vehicle with power does not move on rainy days: 1. Water ingress or poor contact in the controller: When the controller gets wet, it cannot receive power, causing the electric vehicle to fail to move or the rear wheel to lock up. If the controller gets wet, it is essential to open it promptly, dry it with paper or a cloth, wipe the circuit board with alcohol, and then let it dry before sealing and testing it. If it still does not work, replace the controller immediately. 2. Poor line contact: Loose battery connections or poor contact in the power lines. Check if the battery terminals are corroded or loose. 3. Water ingress in the battery: Insufficient power in the electric vehicle, as water ingress in the battery can lead to insufficient discharge output current.

[McGenevieve]

I've encountered the issue of electric trams not moving on rainy days many times. As a city tram driver, problems can arise every time it rains. The main reason is that the wet tracks become slippery, causing the wheels to lose traction and spin. Even though the tram has power, it won't move because the traction system fails. Additionally, rainwater can seep into electrical boxes or wiring connections, leading to short circuits or blown fuses that interrupt current transmission. High humidity can also affect sensors, such as the anti-skid sensors mistakenly detecting unstable tracks and triggering automatic braking to stop the tram. My suggestion is to clean the track drainage ditches before rain and regularly check the sealing of electrical circuits to avoid such troubles. Sometimes, when passengers complain, I can feel that the system design is somewhat fragile, but safety comes first. Now I've developed the habit of driving slower in advance during rainy days.

[MacEden]

As a technician who has been repairing electric vehicle equipment for many years, rainy day failures are common, and electrical components are prone to problems when there is excessive moisture. Water entering the controller or switch box can cause short circuits, and when the fuse blows, the circuit is cut off, leaving the electric vehicle unable to start even with power. Wet tracks can cause driving wheels to slip, reducing efficiency, and the traction motor cannot perform at its best. Sensors such as humidity or temperature probes may give false danger signals when damp, leading the system to automatically lock down for protection. During troubleshooting, we check wiring connections and drainage ports to ensure there is no water accumulation or corrosion. Track cleanliness is also crucial to reduce insufficient lubrication. Overall, improper maintenance is the root cause, and daily upkeep and waterproofing measures must be strengthened.

[DeGarrett]

In our electric train dispatch center management, automatic shutdowns frequently occur during rainy days, primarily due to the activation of system safety protocols. Heavy rain makes tracks slippery, increasing the risk of derailment, prompting vehicles to automatically reduce speed or brake to a complete stop upon detection. Electrical faults are even more common, as rainwater can cause short circuits that disrupt circuits, such as signal relay trips leading to control failures. We initiate inspection procedures to assess rainfall and track water accumulation, suspending services until repairs are completed. This helps avoid accidents and passenger complaints that could impact operational efficiency, but requires balancing emergency responses. I recommend additional training for drivers to handle emergencies.