The parking lot exited the invisible slow-down belt and the chassis was buzzing. Not at that time, a week later, the 4s shop test report stated that the battery shell was dim and recommended that the entire battery bag be replaced at a price of $110,000。
A plate of several hundred pieces could cost hundreds of thousands at a time. Make sure it's done and decide whether to do it。
How much is it going to cost
Batteries account for 40 to 60 per cent of the total vehicle cost and, in the event of damage, the plant usually recommends the replacement of the entire module or even the battery pack for safety reasons。
Several real cases are before us. One car owner in zhejiang landed at 310,000, with a chassis bump leading to the deformation of the electric core door by 1. 6 mm and the replacement of the entire battery bag offering between 150,000 and 170,000. A tesla model 3 car in guizhou needs to be replaced with some battery modules at a cost of hundreds of thousands. The spare parts of the car may not have been as low as 19,000 new battery bag processing hours. There is also the battery failure of the owner, which costs $200,000 for repairs, and the second-hand cost of $160,000, which is more expensive than changing cars。
The cost of one-time bottom maintenance ranges from 12,000 to 100,000. The price of a three-pack of manganese steel is less than $400 for the electrician platform. Aluminium alloy package at the original factory of 4s, with a discount of 1,500 to 1700。
The price gap is here, but the billboards cannot be seen on that side alone。
The shielding effect: can hold the small stone, can't hold it back. Bottom
Industry data show that the risk of bumping at the bottom of batteries is close to 2 per cent. In the case of accidental collisions with heat out of control, 70 per cent were from the bottom of the vehicle。
The battery of a tram is subject to stringent tests such as national standard collisions, needles and water immersion before leaving the plant, and an autonomous brand engineer has revealed that their battery bag can hold 12 tons of impact on its base. The day-to-day pebble impact or slight bottoming only leaves a scratch on the outer shell, without compromising the safety of the battery。
What's the shield gonna hold? Spattered small stones, light chassis scratching, continuous brushing of sand and stones. Can't stop what? High-speed penetration through deep pits, hard objects directly impact the core area of the battery pack. A battery pack with an impact equivalent to an african elephant pedal hit the original plant battery packs and load plates, resulting in a stable plant formation like tarzan, while the control group with the pads was smoked 12 seconds in advance。
The plate prevents a small bump, but it does encounter a severe bottom-to-bottom shock, and a thin sheet of metal may bend and embed the battery bag to pass the impact that would not have hurt the battery. The main vehicle was equipped with a plate called military-inspection protection, which was embedded in a battery bag like a wedge after bumping at the site, and the cost of maintenance went directly to 80,000。
The hidden cost of filling plates: lower chassis, higher power consumption, lower heat dispersion
The boards are not loaded, and the three hidden costs must be calculated。
First, the gap between chassis is reduced. Loading the shield will reduce the chassis by about 1 to 2 centimetres. The owner of the vehicle measured a 20-centimetre gap and only about 17 centimetres after loading. The reduction of the gap from the ground means a reduction in sex, and the reduced belt that could have been used may now be scratched. Much of the reality is that the rear panels touch the ground, but they increase the risk。
Secondly, electricity consumption has increased. Metal panels were increased by 8 to 20 kg, leading to increased electricity consumption in the long term. The owner measured an increase of approximately 0. 3 degrees in electricity consumption of 50 kilometres. The average electricity consumption increased by 1 to 3 per cent and the voyage was reduced. At a rate of 20,000 kilometres per year and at a public rate of $1. 4, the electricity bill costs between several dozen and a hundred more a year. Not much, but the tram is already sensitive to weight。
Third, heat dispersion and quality assurance risks. The whole package is likely to change the bottom flow, increasing the working temperature of the battery by 5 to 8°c and accelerating decay. Non-incorporated pads may also interfere with pre-set collision-formation and depressure mechanisms in battery packages. More critical is the issue of quality assurance: the installation of the original plant pads in 4s would not affect the third-power guarantee, but the installation of non-original plant pads on its own outside, which may not be covered by the warranty if, as a result of the inappropriate installation, battery dissipation problems or structural damage can be demonstrated by the failure of 4s。
Insurance claims are also at risk. The loading plates were converted after the vehicle had left the plant and, in the event of damage to the battery packs, some insurance companies would refuse to pay compensation on this ground. The claimant disclosed that seven similar cases were rejected in six months on the grounds of “unauthorized modifications affecting the original vehicle structure”。
Counting a lump sum: loading plates and non-loading, five years' difference
Take, for example, a pure tram of about 150,000。
Packing plates: three sets of manganese steel are approximately $400, or the original aluminium alloy at 4s is approximately $1600. Annual electricity consumption increased by about 1 per cent, at an annual run of 20,000 kilometres and a combined cost of 0. 8 dollars, costing about 80 dollars a year. Five years of electricity costs 400 more. Total inputs: the manganese steel programme is about $800 and the original plant programme about $2,000。
No board: daily urban commute, very low probability of bottoming. In the event of damage to batteries, however, maintenance costs range from 19,000 to 100,000. Based on a 2 per cent bottom risk probability, maintenance costs are expected to be between $380 and $2,000。
In figures, there is no significant difference between the expected costs of loading and non-dressing. But the key variable is this thing: it doesn't happen, it doesn't happen, it starts with tens of thousands. Whether or not the insurance can be used depends on whether there are retrofit marks and what is to be done with the damage。
Conclusion: who's fit, who's not touched
Fits the board:
He's been running all the time
A motor train with a lower chassis per se
Frequent commuting routes in the mountains and pits
I'm not sure i'm serious about todi. Hands
Don't touch the pad:
It's a pure city with a smoother road than chocolate
The base of the original battery pack has a model for perfecting the protective layer
I don't want to take on the owners of the increased power consumption and heat spread
I'm worried about affecting quality assurance and insurance
Really decided to load it, choose the plant, not the third party. The installation of the original plant panels at the 4s store does not affect the trielectric security and the insurance company has a high level of accreditation. Third-party panels are cheap, but may affect quality assurance and compensation, and hundreds of saved pieces could turn into tens of thousands of holes。
The last reminder: the panel won't make the battery invincible. The ones who really protect the battery are slow-paced, bypassing the pits, not rushing through the teethDriving habitsI don't know. The plate can block a little bump and a reckless drive。
Take a look at yourself: put your cell phone on the ground, rub it on the soles of your shoe and see if the screen will break. That's what the speed belt does to the battery pack. Talk to the comment section. Have you ever talked to anyone? How much did it cost? I'm trying to figure out where you're going. I thought it would help you figure out the account, order it up and send it to the friend who's always worried about bumping the chassis and let him make his own judgment。
