• Follow us
Home > Exhibition > Content
Electric strong heart: analysis of 4 kinds of battery technology
Dec 09, 2016

Lead-acid batteries: you are the most common batteries

Lead-acid batteries are normally the most common battery, the main advantage of voltage stability, cheap, but at the same time there is a low frequent, short service life and maintenance, and so on. At home, the lead-acid battery in low-speed electric vehicles are common in the country, in addition to the advantages mentioned above, this price than other battery low prices. Lead-acid batteries 2V, 4V, 6V, 8V, 12V and 24V series, 200mAh capacity 3000mAh. Now figure out lead-acid batteries discharge time, here's a formula can be used to rough math: x rated capacity discharge capacity ratio x (1+ x temperature coefficient (at ambient temperature-25)) = length of discharge/discharge current. Lead-acid batteries low price, but battery life is low. So, provided exclusively by the battery of the electric energy is not very appropriate.

Manganese lithium iron phosphate battery: BYD's battery technologies

In recent days, said BYD Chairman Wang chuanfu, BYD the latest manganese lithium iron phosphate batteries made a breakthrough in the study of the energy density of conventional lithium iron phosphate battery limit reached the ternary material level, while in cost control and more excellent than ordinary lithium iron phosphate, and have been used in BYD electric cars, battery life has been greatly improved.

Qin on the electric vehicle, BYD will use this type of battery, this battery is improved in the lithium iron phosphate route, called manganese lithium iron phosphate, manganese element is inside the material added. The battery energy density has reached the ternary material density. In terms of power lithium iron phosphate battery is more durable than it is now, because there is no get the exact price information, we do not compare.

Lithium iron phosphate battery: an alternative to batteries

Lithium iron phosphate batteries are lithium-ion batteries, used batteries, but its higher discharge efficiency, charge/discharge efficiency rate discharge cases could reach more than 90%, and lead-acid batteries is approximately 80%. In batteries, lithium iron phosphate battery security than other batteries, theory of life can reach 7-8, the actual service life is about 3-5 years, price-performance ratio theory for lead-acid batteries 4 times or more.

Next said its shortcomings, lithium iron phosphate battery cost more than other types of batteries, and battery capacity is small, short line mileage, but scrapped after basically can't recycle, no collectible value. To sum up, application of lithium iron phosphate batteries in electric vehicles, will add to the overall cost increase, and the battery can not be recycled, this would result in a waste of resources and consumption.

Lithium cobalt oxide batteries: TESLA's exclusive battery

TESLA electric car battery using the Panasonic provided the NCA series (aluminum nickel cobalt system) 18650 lithium cobalt oxide batteries, 3100 mAh battery capacity. Strategy of the TESLA battery pack is used, 85kWh the MODEL s battery cells using a total of 8,142 18650 lithium battery, engineers first put some batteries to bricks, one by one the average assignment eventually an entire battery pack, battery pack located in the underbody.