New energy vehicle batteries are definitely polluting:
1. As the new energy vehicle battery industry develops rapidly, more and more people are concerned about whether discarded batteries will cause pollution. Does the environment cause new pollution, thereby erasing the original environmental protection intention of new energy vehicles? Professor Wu Feng once publicly stated that a 20-gram cell phone battery can pollute one square kilometer of land for about 50 years. It is conceivable that if an electric vehicle battery weighing several tons is thrown into the natural environment, it will have a negative impact. negative impact on the environment. Causes greater pollution;
2. The journalists' research found that most automakers currently promise consumers that the durationBattery life and warranty is less than 10 years. For example, the Denza, the first purely electric vehicle jointly produced by BYD and Daimler, has a range of 300 kilometers. The battery used by the Denza is a lithium iron phosphate battery. The authorities guarantee that 80% of the battery capacity will be. preserved after 4,000 charges and discharges. The warranty period is 6 years or 150,000 kilometers
3. The warranty terms for the Model S power unit and battery are 8 years with no mileage limit; the car purchased by the user has not exceeded 8 years, it will not be used for driving. If there is any problem with the device or battery, you can benefit from free warranty service. However, with the boom in sales of new energy vehicles in recent years, there will be strong demand for battery replacement in about five years.
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Currently, there is no qualification to deal with used batteries. Batteries can be treated as normal waste and returned to sanitation. elimination. It is understood that batteries are generally divided into two categories: dry batteries and lead-acid batteries. Dry batteries are divided into two types: disposable batteries and secondary batteries. The often talked about battery recycling generally refers to ordinary disposable dry batteries, which almost do not pollute the environment; disposable button-type dry batteries used in computers, secondary batteries used in cell phones and other applications that can be recharged several times. and applications Lead-acid batteries used in automotive and other industries contain high levels of heavy metals such as mercury, lead, cadmium, nickel, zinc and manganese, which are very harmful and must be recycled.
Environmental Protection Bureau staff also said that the AA and AA dry batteries we usually use are low-mercury or mercury-free and do not require large-scale unified recycling .
The scattered disposal of these dry batteries in trash cans has little impact on the environment. However, if a large number of used batteries are stacked together, heavy metals may escape due to mutual friction, so this is not necessary. to deal with it. Disposable dry batteries are uniformly recycled. As long as the stainless steel or carbon steel outer cover of the used battery is not opened, the used dry battery will not be harmful.
Do not throw away secondary batteries at will, as they cause serious pollution.
Secondary batteries are also called rechargeable batteries.The most common are cell phone batteries, especially nickel-metal hydride batteries. lithium batteries and batteries, as well as nickel-cadmium batteries used in laptop computers and other digital devices.
Lead-acid batteries are used in battery-powered vehicles and cars.
Since secondary batteries contain a large amount of mercury and heavy metals, which are chemical substances that seriously harm the environment, if they are discarded indiscriminately, they will cause environmental pollution. environment.It can enter the human body through the food chain and cause chronic poisoning.
In recent years, incidents of heavy metal pollution caused by batteries can be considered common. In 2009, more than 20 lead poisoning scandals were revealed in China, affecting more than 4,000 people. In 2010, a totalThere were 14 incidents of heavy metal pollution, of which 9 were blood lead incidents. From January to May 2011, 7 other incidents. A heavy metal contamination incident has occurred.
▲Lands contaminated by batteries
Among them, cell phone batteries are those to which we are most often exposed.
In addition, lithium batteries in mobile phones have another shortcoming: they cannot work for a long time in high temperature environments and are prone to explosion.
▲A man's cell phone suddenly exploded in his jacket pocket
The longer the cell phone is used, the longer the battery life and safety lithium are low. Many old cell phones that we don't use are placed at home, which poses many security risks. Such as a bulge of thea battery, an explosion, etc.
▲Mr. Wang heard a noise early in the morning and got up to find that the old cell phone placed in the box had exploded
So it is also recommended not to leave. Use cell phones at home for a long time. It is also best not to use it as a toy for children.
In daily life, you also need to pay attention to battery maintenance. The general lifespan of a mobile phone is 2 to 3 years. If the lifespan is exceeded, the security of the mobile phone is compromised. will be reduced. It is recommended to replace the battery.