The battery plays an important role in life. Lighting, mobile phones, cameras, watches, microphones, laptops, electric vehicles, new energy vehicles, electric toys, remote controls ... all use battery.There are also many types of batteries. Lithium batteries, solar batteries, fuel cells, air batteries, lead -acid batteries, carbon batteries ... Below, lets talk about the relevant knowledge of the battery.
How to buy batteries
1. Buy battery products with "national inspection" and brand -name signs.
2. According to the requirements of the electrical appliances, select the applicable battery type and specification size.
3. Pay attention to the production date and shelf life of the battery.
4. Battery logo, the battery trademark should indicate the name of the production plant, the battery polarity, the battery model, etc.
5. In order to protect the environment, a battery of mercury -free, 0%mercury, no mercury and other words should be selected.
Harm and recycling of waste batteries
1. Harm of waste batteries
In waste batteries, metal mercury can be dissolved in fat, causing animal central nervous diseases, causing teratogenic, degenerative, carcinogenic, and even death; cadmium softens bone quality and skeletal deformation, and natural fractures are formed in severe cases; zinc salt causes the salt of zinc.Protein precipitation has a stimulating effect on skin and mucous membranes; lead is mainly to cause anemia, neurological dysfunction, and kidney damage, inhibit the synthesis of hemoglobin; nickel is dissolved in blood, damaged the central nervous nerve, and causes vascular variation; manganese can cause neurological dysfunction.Comprehensive functional disorders, more severe symptoms.
2. Waste battery recycling and utilization
95 % of the substances in waste batteries can be recycled, especially heavy metals.Waste lead battery can be recycled 50 ～ 60kg lead.For the regeneration treatment of cadmium -containing waste batteries, there are relatively mature technologies abroad. It can be recycled by 100kg of cadmium -containing waste batteries that can be recycled by about 20kg of metal cadmium. It can be seen that the recovery of heavy metal resources is of great practical significance.However, domestic disputes over waste batteries have continued.At present, there are only lead -acid batteries (automotive batteries and batteries). There are manufacturers self -built waste battery recycling systems, and other types of batteries are not.
Battery application
1. Electric vehicle battery
Electric vehicles [electric bicycles] [electric motorcycle] 4 power batteries used, valve control acid -controlling maintenance batteries, colloidal lead -acid batteries, nickel -metal hydride batteries, and lithium ion batteries.Most of the electric vehicles are equipped with lead -acid batteries, because lead -acid battery costs are low and cost -effective.
2. Notebook battery
The earliest battery was nickel -cadmium battery (NICD), but this battery has a "memory effect". It must be discharged before each charging. It is not convenient to use. It is replaced by NiMh battery (NIMH)."Memory effect", and the weight per unit can be increased by 10 %.
3. Mobile phone battery
Mobile phone batteries generally use lithium batteries and nickel -metal hydride batteries.MAH is a unit of battery capacity.
4. Electric vehicle battery
There are five main types of new energy vehicle batteries: lead -acid batteries, nickel -cadmium batteries and nickel -metal hydride batteries, lithium batteries, lithium iron phosphate batteries, and fuel cells.

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