Technology and Safety of Lithium Battery System -Lithium - Ion Battery Equipment

Technology and Safety of Lithium Battery System -Lithium - Ion Battery Equipment

Technical bottleneck and safety assurance analysis of lithium-ion battery system

As an electronic component of real-time monitoring, active balancing, and intelligent charging and discharging, battery processing systems (BMS) play an important role in ensuring safety, extending service life, and saving electricity. After a series of manipulations and controls, the normal operation of the electric vehicle is guaranteed.

According to relevant data, the global market value of battery processing systems rose by more than 10% in 2013, and the growth rate will jump to 25-35% in 2014-2016. The CAGR of EVs will remain around 15% to 30% through 2020. In addition to the increase in the number of pure electric vehicles, plug-in hybrid electric vehicles and hybrid electric vehicles, the new 48V mild hybrid system will also be significantly added. With that in mind, electronics enthusiasts spoke with Cha Yong, Littelfuse's my country Sales Director.(Lithium - Ion Battery Equipment)

Zha Yong, the company's sales director in my country, said that in order to make the battery work in a stable and safe condition, it is necessary to deal with the charging and discharging conditions of the battery and monitor the safe working voltage of the battery.

The market, said Yong, our company sales director, is based on low or zero emissions, improved air quality requirements, and put forward higher power requirements for cars, followed by an increase in the entire car CLP load (such as car power increase, multimedia, etc.), the high voltage power supply and power supply system are more powerful.

There are currently four important types of EV/HEV architectures: Hybrid Electric Vehicle (HEV), an oil/electric hybrid vehicle where the battery is charged by the engine; secondly, the PEV (plug-in) is a mixture of oil and electricity , the battery needs to be charged externally. Third, pure battery-driven pure electric vehicles; fourth, chemical fuel cell power supply. Cha Yong said that gasoline and electric hybrid vehicles accounted for a relatively large proportion of the mall at that time, and will gradually transform to pure electric in the later stage.

So what are the advantages of lithium-ion batteries?

We understand that the power supply system of an electric vehicle is composed of several lithium-ion batteries.

Technical bottleneck and safety assurance analysis of lithium-ion battery system

As can be seen from the above figure, the lithium-ion battery pack consists of one battery cell, and each battery cell has about 500~7000 battery cells, which puts forward higher requirements for the processing and control of the battery.

Lithium-ion battery technology will be the foundation of any type of electric vehicle. The best cost and functionality will be supplied in the future, with costs expected to drop by a quarter to a third over the next few years, while energy density will be added by just as much, Cha said. As can be seen from the comparison table of lead-acid batteries, nickel-metal hydride batteries and lithium-ion batteries in the figure above, the advantages of lithium-ion batteries in terms of power density and charge cycle life are irreplaceable.



Contact Us

24 hours online service