The function of the car protection cover
The "protective covers" on cars actually refer to several different components, with significant differences in their functions. The most common ones are for protecting cameras, batteries, and engines. Their core functions are to prevent damage, keep them waterproof and dustproof, and extend their lifespan. Here's a breakdown by different parts:
Common protective cover types
Camera protective cover: Attached to the exterior of the external camera (such as 360 panoramic camera), it prevents small stones from splashing and scratching the lens, while also preventing water droplets from adhering and fogging, and avoiding blurry images. The material is usually multi-layered, high-definition, and high-transparency. If damaged, it can be replaced separately.
Battery protective cover: Covers the positive and negative terminals of the battery, preventing foreign metal objects from causing short circuits, while also preventing dust and water, reducing terminal oxidation, and avoiding difficulties in starting or leakage.
Engine hood (hood): It is part of the vehicle body, protecting the engine from external impacts and dust, while also serving as a sound insulation, heat insulation, and buffer for pedestrian collisions.
Battery protective cover (for electric vehicles): A protective plate under the vehicle chassis to protect the battery from impacts and foreign objects, also providing protection against road debris, water, and foreign objects. It also includes heat dissipation and waterproof sealing functions.
Core functions summarized
Prevent physical damage: Protect against stone splashes, bumps, and scratches, avoiding damage to original vehicle components.
Prevent environmental erosion: Waterproof, dustproof, anti-fogging, and anti-oil contamination, keeping the components clean and dry.
Ensure safety and stability: Prevent short circuits and leakage, ensuring the normal operation of the circuit and battery system.
Save maintenance costs: By protecting small components in advance, it can save on large-scale maintenance costs such as replacing cameras and repairing batteries.
If installing a camera protective cover, choose a material with high definition and transparency to avoid affecting the clarity of the image; before attaching, align the position properly. If not aligned, you can remove it and reattach it.
For daily use, the camera protective cover is the most worth considering, especially for drivers who often drive on highways or park in the open air, as it can avoid many minor troubles. Regarding the battery cover and battery shield, the original factory usually has basic protection, and there is no need to worry about it under normal use.
The "protective cover" you mentioned is likely to be the positive electrode protection cover for the battery. If it is damaged or lost, it will not affect driving for a short period, but it is recommended to deal with it as soon as possible to avoid potential hidden dangers.
Short-term emergency: First, check if the terminal is oxidized and white or loose. If it is only the cover that is broken, find an insulating plastic bottle cap to temporarily secure it to prevent metal foreign objects from connecting to the positive terminal and causing a short circuit, as well as blocking dust and water.
Long-term handling: It is best to go to a 4S store or repair shop to replace an original cover that matches the vehicle model. Do not install it backwards. If you are not strong-handed, let a professional install it, which is convenient and safe.
If the cover is lost and left unattended for a long time, the terminal may oxidize, causing poor contact, and there may be difficulties in starting; in rainy or washing car conditions, water may splash onto it and cause leakage, and in severe cases, short circuits or even fires. Do not take it lightly.
If the damaged cover is something else, such as the vehicle body guard or engine hood, the handling approach is similar: first, check the extent of the damage. Minor scratches can be polished or repainted, while deep dents or cracks are recommended to be inspected at a professional repair shop. In severe cases, replace it directly. Do not try to patch it together.
"Car protective covers" generally refer to two things: the car cover/sunshade that covers the vehicle body, or the invisible car cover/paint protection film on the paint surface. Different types of materials vary greatly, and I will explain them separately.
Car cover/sunshade (outer cover): The mainstream materials are Oxford fabric, PEVA, PVC, as well as nylon, polyester fiber, and aluminum film composite. Oxford fabric is wear-resistant and waterproof, PEVA is soft and breathable, and PVC is cheap but has weak sun protection and scratch resistance, with a short lifespan (about 2 years).
Invisible car cover/paint protection film: The mainstream is TPU (thermoplastic polyurethane), which can self-repair scratches, with a lifespan of 5 to 10 years; low-end options include PVC and TPH (modified PVC), but they are prone to yellowing and cracking, with a lifespan of 2 to 3 years.
If the main purpose is to prevent hail, a thick cotton Oxford fabric car cover or an 8mm thick TPU invisible car cover would be more effective.
Selection reminder: TPU has the best overall performance but is expensive; for those with a limited budget and basic protection needs, PVC or PEVA can be chosen; for those parking outdoors for a long time, Oxford fabric or aluminum film composite models are recommended.
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