Five types of new energy inventory of car batteries
1, lead-acid batteries
Lead-acid batteries as a relatively mature technology, because of its low cost, but also to high-rate discharge, remains the only available for mass production of electric vehicle batteries. Beijing Olympic Games, there were 20 lead-acid batteries used for electric vehicles to provide transport services for the Olympic Games.
But the lead-acid battery specific energy, specific power and energy density are very low, as a power source for an electric car can not have good speed and endurance mileage.
2, nickel-cadmium batteries and nickel-metal hydride batteries
Although the performance is better than lead-acid dell laptop battery , but it contains heavy metals, the use of abandoned after the environment will be polluted.
Nickel-hydrogen batteries have just entered the mature stage, is currently used in hybrid electric vehicle battery system, the only real validation was commercial, large-scale battery systems, the current hybrid electricity market share of 99% nickel-hydrogen batteries, commercial representative is Toyota Prius. Currently the world's leading vehicle power battery manufacturers are mainly in Japan PEVE and Sanyo, PEVE Global Hybrid-powered cars occupy the Ni-MH battery 85% of the market share, is currently the main commercial hybrid cars such as the Toyota prius, Alphard and Estima, as well as the Honda Civic, insight Dengjun used PEVE nickel hydrogen batteries. In China, Chang'an Jie Xun, Chery A5, FAW Pentium, General Grand Hyatt brands such as model cars have been running, they are also used in nickel-metal hydride batteries, but batteries are sourcing from abroad, the domestic nickel-metal hydride batteries in the car the use of match is still in development stage.
3, lithium batteries
The traditional lead-acid batteries, nickel-cadmium dell inspiron 6400 battery,dell inspiron 640m battery and nickel-metal hydride battery technology itself is relatively mature, but they are used in automotive batteries as a power, then there exists a larger problem. At present, more and more car manufacturers to choose from lithium batteries as a new energy car battery power.
Because the lithium-ion battery has the following advantages: a high voltage (which is hydride nickel-cadmium batteries - nickel batteries 3 times); than the energy of large (up to 165WH / kg, nickel-hydrogen batteries 3 times); size small; the quality of light ; cycle life long; self-discharge rate is low; no memory effect; no pollution.
At present many well-known car manufacturers are working to develop lithium dell inspiron 700m battery,dell inspiron 710m battery powered vehicles such as Ford, Chrysler, Toyota, Mitsubishi, Nissan, Hyundai, France, Courreges, Ventury so. While the domestic car manufacturer BYD, Geely, Chery, Lifan, ZTE and other car firms also have their own hybrid and pure electric vehicle powered by lithium battery power.
Currently impeding the development of lithium-ion battery power bottlenecks are: safety performance and vehicle power battery management system. Safety performance, because the lithium-ion battery with energy density and working temperature is high, poor working conditions and other reasons, coupled with the safety of people-oriented concept, so the battery safety of users made a very high demand. Auto power battery management system, since the vehicle power battery voltage is 12V or 24V, but a single power lithium-ion battery voltage is 3.7V, the battery must be by a number of series and increase the voltage, but because of the battery is difficult to achieve completely homogeneous charge and discharge, leading to a number of battery packs in series within a single battery charge and discharge occur imbalance, the battery charge will appear under and over-discharge phenomenon, and this situation will lead to a sharp deterioration in battery performance and ultimately resulted in the entire group of cells does not work, or even scrapped, thus significantly affect dell inspiron 8500 battery,dell inspiron 8600 battery life and reliability.
4, lithium iron phosphate battery
Lithium iron phosphate battery is also a lithium battery, its specific energy less than half of lithium cobalt oxide batteries, but its high security, cycles can reach 2000 times, discharge stability, cheap, a new car with power options.
BYD's "iron battery", the industry that its lithium iron phosphate batteries for more likely.
5, fuel cell
Simply put, fuel cell (Fuel Cell) is a way to exist in the fuel and oxidizer in the chemical energy directly into electricity plant. Fuel and air were sent to the fuel cell, electricity was wonderfully produced. It is from the appearance point of view there are positive and negative electrodes and electrolyte and so on, like a dell inspiron 9200 battery,dell inspiron 9300 battery, but in fact it can not "reserve power" but a "power plant."
The most likely is for the automotive proton exchange membrane fuel cells. It works is: hydrogen sent to the anode, through the catalyst (platinum) and the role of hydrogen atoms in the two electrons are separated, the two electrons in the positive, attracted by the external circuit produces current, loss of hydrogen electrons ions (protons) to pass through the proton exchange membrane (ie, solid electrolyte), in the cathode and oxygen atoms and the electronic re-combination of the water. Because oxygen can be obtained from the air as long as the constant supply of hydrogen to the anode, and timely water (steam) away, fuel cells can provide electricity continuously.
Because fuel cells chemical energy of fuel directly into electricity without intermediate combustion process, dell inspiron 9400 battery,dell inspiron b120 battery,thus not subject to Carnot cycle restrictions. At present fuel cell system fuel - electricity conversion efficiency of 45% ~ 60%, while the efficiency of thermal power and nuclear power about 30% ~ 40%.
Development Trend of new energy automotive batteries
K-Swiss automotive network that: in the development of new energy vehicles, the nickel-metal hydride battery technology the most mature in the next three years, will remain the mainstream of new energy vehicles, followed by nickel-metal hydride battery technology and lithium iron phosphate, hydrogen fuel cells, one-third of the world, 5-year lithium dell inspiron b130 battery,dell inspiron e1405 battery and will be gradually replaced by fuel cells.