Battery waterproofing is not as strong as usual

New energy vehicles are piling up. Some people worry about its mileage. Some people say that charging piles are not enough. As these concerns are slowly resolved, others are still asking whether these electric vehicles will be afraid of water.

As you know, a mobile phone, falling into the water, is almost at the end of its life, and with so many batteries in the electric car, the battery water, the consumer is not only frightened, then the problem comes. Can the new energy vehicle be 100 % waterproof?

The battery is even more watertight than we thought.

Regarding the product protection safety level, there is a clear indicator: IP protection level. It is mainly used in military, commercial and civilian grades.

We just need to remember the numbers. The IP67 standard, most civilian products that meet the "IP67" standard, is the highest standard. This standard is applied to mobile phones that we can not do without daily, as well as watches and other mobile devices.

This set of standards will be used to measure product protection against dust inhalation and protection against short-term immersion.

Since it is a level, there must be a highest standard, and the highest level of IP protection is "IP68".

For power batteries applied to new energy vehicles, meeting the IP67 standard is an absolute condition to be met. In addition to this standard, new energy car batteries also have to meet additional requirements.

Salt-containing seawater is particularly prone to corrosion of products, so the core product must also be immersed in a 3.5 % NaCL(sodium chloride, simulated seawater) solution for 2 hours under full electricity, requiring the battery to have no fire and explosion.

This has not yet been achieved.

In addition to the strict waterproof test, there is a shy test-`` naked test. "

Ensure that, without relying on any protective measures, the core itself also has strong compressive capabilities, such as violence testing processes such as puncture, extrusion, and fire.

Therefore, the waterproofing problem that users are worried about is only one part of the core detection. Other "dangerous dangers" that we may not have considered are already targeted management standards in the current standards.

These strict standards have made the battery itself excellent, it has a strong anti-dust waterproof ability, and it will not easily appear in the event of water flammable or explosion and other dangerous situations.

Safety protection from inside out

Car companies are divided into three major safety protection links for new energy car batteries, namely battery monomer safety, battery module safety, and battery system safety.

In addition to the first water-proof capability of the single cell, it will continue to increase the safety factor in the batteries and systems, and the three dimensions will jointly build an ever-improving wall of safety.

In order for the vehicle to ensure the safety of the battery pack during driving, the car company will provide a protective framework for the battery pack, also known as the cell module framework. At present, most new energy car batteries are arranged on the chassis and are easier to contact with water during driving. Therefore, the protection framework will provide special insulation protection for the high-pressure parts of the battery pack to protect the safety caused by external forces including wading and collisions. impact.

One last shield.

The last protective wall will be built at the software system level. The new energy vehicle power battery management system(BMS) will provide high-voltage electric shock protection, vehicle collision and power outage protection, high-pressure components waterproof protection, and high-voltage leakage insulation protection through monitoring the battery status. Keep the battery in a safe state.

In other words, if there are any problems, the system will react to remind you at the first time.

With the move to ban the sale of fuel cars, we should all believe that there will be unlimited development of new energy vehicles in the future. Moreover, the development of new energy vehicles is almost mature, and we do not need to worry about it. Governor Jun is also going to buy a new energy car.

The page contains the contents of the machine translation.