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Advantages of lithium-ion battery for electric vehicles, the cooling ability of lithium-ion battery for electric vehicles. Lithium-ion batteries are relatively light, easy to carry around and have a relatively long life. There are a variety of lithium-ion battery electric vehicles available today. Giant, TaiXiang, Jemma, Ardi and Emma are all good choices. Under the condition of high temperature, if there is no appropriate cooling method for electric vehicle lithium-ion battery, the temperature of the battery pack will vary greatly, which will affect the consistency of the battery monomer and cause a series of subsequent problems.
Advantages of lithium-ion batteries for electric vehicles
● Powerful power
Lithium-ion batteries for electric cars climb hills faster than lead-acid batteries
Low volume small
Lithium-ion batteries have high energy storage density, 5-7 times that of lead-acid batteries, and are easy to install and carry
Low light weight
Lithium-ion batteries, which weigh about a third as much as lead-acid batteries of the same capacity, can be separated from the car and used at any time
● Mileage driven
20% to 30% more than lead-acid batteries
● Green environmental protection
Lithium-ion battery is environmentally friendly, lithium ion battery does not contain lead, mercury, cadmium toxic substances
● Super long life
Lithium-ion batteries for electric vehicles usually have an extremely long life of 5-8 years, which is not comparable to lead-acid batteries. With the advantages of performance, lithium-ion batteries gradually expand the market scale, and the increase directly leads to the expansion of output and the decrease of manufacturing costs, which in turn stimulates the market to further increase. Lithium-ion battery products thus embarked on a virtuous cycle of development.
● Wide working temperature range
The lithium-ion battery for electric bikes can work in the range of -25 degrees to 55 degrees, and its electric capacity can reach 70% of its scale capacity, while lead-acid batteries can only work in the range of 10 degrees to 40 degrees, and can not work properly at -25 degrees.
The cooling capability of lithium-ion battery electric vehicles
Lithium-ion batteries in charging and discharging process will appear a certain quantity of heat, especially in the process of large current charge and discharge will appear in lithium ion battery inside a lot of heat, but due to the lithium ion battery structure thermal conductivity in different directions exist significant differences, in parallel to the direction of the pole piece is a the significant higher thermal conductivity perpendicular to the direction of the pole piece of the thermal conductivity, Therefore, different cooling methods not only have significant differences in efficiency.
The cooling problem of lithium-ion battery electric vehicles has always been one of the key technologies in the industry. Lithium-ion batteries are related to traditional lead-acid batteries, nickel-cadmium batteries and nickel-metal hydride batteries, which have higher energy density and higher charge-discharge rate, so the heat is serious in the working process. Especially in the field of power lithium battery, complex road conditions, harsh environment (especially in high temperature summer), battery heat generation is more intense, the capacity of lithium ion battery, life, especially the safety performance is more significant impact.
To some extent, the safety of the lithium ion battery problem is, in fact, its thermal dissipation, lithium ion battery heat production rate is greater than the cooling rate, the battery pack will heat up, once more than the temperature of the battery pack can withstand a tipping point, electrical equipment will be serious safety accidents, so the lithium lithium ion power battery pack heat dissipation problems is very important.
Therefore, lithium ion battery manufacturers should carry out thermal management of lithium ion batteries, battery heating and heat dissipation are very important. The former is concerned with cold start, range and power performance, while the latter is concerned with battery system quality assurance life and vehicle safety.
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