Jan 29, 2019 Pageview:1638
In today's battery market, lithium battery with energy conservation and environmental protection advantages quickly get the recognition of the broad masses of customers. The development of lithium battery is the inevitable trend. In terms of energy conservation and environmental protection, it is the top priority now.
The ternary lithium battery
Lithium-ion batteries are divided into the ternary polymer lithium battery,Lithium ion batteries,lithium iron phosphate batteries iron, manganese acid lithium battery, and so on many kinds. Each have each advantage, each have each different. But as for the ternary lithium batteries for broad development prospect is *.Someone asked, three yuan polymer lithium battery. How long is the life?
Ternary polymer lithium battery is correct material using nickel cobalt manganese acid lithium (Li (NiCoMn) O2) ternary positive electrode material of lithium battery, the ternary composite cathode material precursor products, is the cobalt nickel salt, salt, manganese salt as raw materials, in the proportion of nickel cobalt manganese can according to the actual need to adjust. The ternary lithium battery energy density is bigger, but security is often suspect.
Is there such a reason is that even if the two materials will be in when you arrive at a certain temperature decomposition, ternary lithium materials can occur in the lower 200 degrees decomposition, and lithium iron phosphate material is around 800 degrees. And chemical reaction of the ternary lithium materials more intense, can release oxygen, under the effect of high temperature electrolyte rapid combustion, a chain reaction. Say simply, it is the ternary lithium material than lithium iron phosphate material more easy to catch fire. But it is important to note that we mentioned is the material, rather than batteries has become a finished product.
Because of the ternary lithium materials have such security hidden danger, so the manufacturer also in efforts to curb the direction of the accident. According to the properties of the ternary lithium materials easily pyrolysis, manufacturers (OVP) in the overcharge protection, discharge protection (UVP), over temperature protection (OTP), the over-current protection (OCP) composition among the link will be under a lot of kung fu. So more spontaneous combustion is should consider whether the function of the manufacturer in this a few link in place, rather than simply isolate.
So the usage of these two kinds of battery now is how? Let's focus on a set of data. Last November, lithium iron phosphate battery electric bus installed capacity up to 64.9%, the ternary lithium battery installed capacity is only 27.6%.On the contrary, in the pure electric passenger car market, the ternary lithium battery installed capacity of more than 76% in November last year.
It can be seen that the ternary lithium battery energy density greater preponderance, should be to for future car new energy storage device. Now related security incidents in the popularization of new energy vehicles is still in its infancy, is a good thing. A lot of new energy vehicles related businesses in order to be able to seize market and obtain the double goal of policy support, to broaden the technical requirements, mass production can not stand the repeated use of the energy components for a long time. Car work environment is harsh, use these parts for a long time, the reason of safety accidents is greatly increased.
So we can think in China ministry of industry and information technology on electric vehicle c equipment department chief priests published a picture of wood for three yuan bus to evaluate the safety performance of lithium-ion batteries, is interested in from the relevant state department on a standard definition of policy, to promote the industry standard. Both to consumers and manufacturers, has a very positive significance in the future. So there's no need for online one-sided see ternary lithium battery safety accidents can message material is danger, the key lies in how to firmly in control.
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