Does Underbody Impact Affect New Energy Vehicles Significantly?
3 Answers
When a vehicle experiences underbody impact, a collision force is generated between the vehicle's chassis and the object it hits. Therefore, underbody impact will more or less cause certain damage to the impacted area of the vehicle's chassis. New Energy Vehicles: New energy vehicles are powered by electricity and carry large power batteries. Structurally, the interior of a power battery can be divided into positive electrode material, negative electrode material, electrolyte, and battery separator. Among these materials, except for the positive electrode material, the other three materials are combustible, and the electrolyte has a very low ignition point. The battery separator primarily functions to isolate the positive and negative electrodes of the battery, preventing short circuits. Precautions: Underbody impact commonly occurs when driving over potholes or speed bumps at high speeds, mounting curbs, or driving on rough roads. Therefore, when driving over potholes, speed bumps, or on roads with poor conditions, it is essential to reduce speed to avoid underbody impact, which could damage the battery or even cause a fire. If underbody impact has occurred, immediately contact a service center for assistance.
I frequently repair new energy vehicles, and undercarriage impacts are indeed quite significant. 'Undercarriage impact' refers to the chassis hitting an obstacle, which is particularly severe for new energy vehicles because the battery pack is usually installed underneath. Once damaged, the battery casing may deform or crack, leading to cell damage, electrolyte leakage, or even short-circuiting and fire, making repairs troublesome and expensive. High-voltage wiring is also fragile—if crushed, it can cause power loss or safety hazards. I've seen many cases where drivers had to spend tens of thousands replacing parts after driving on rough roads. My advice is to always pay attention to road conditions, slow down, install undercarriage protection plates, and regularly have a professional inspect the battery condition to avoid greater losses.
As a new energy vehicle owner, I experienced a bottoming-out incident last year, and the impact was quite significant. At the time, I drove over a pothole, and there was a loud 'bang' from the chassis. Later, I found some damage to the battery pack, and the warning light came on during startup. When I took it in for repairs, the technician said there might be issues with the battery cells inside. Not only were the repair costs high, but the insurance claim also took a long time to process. The battery is a core component, and bottoming out can easily damage it, affecting both range and safety. Now, I drive more carefully, especially during rainy days or on rough roads, always worried about another incident. I recommend other owners regularly inspect their chassis—don’t underestimate this issue, as it involves both safety and your wallet.
