Lithium battery has so many advantages, why does car still not use it as storage battery?

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Auto media day is over, for media people, hard work is almost over. Busy for so long, it can be said that each run of media people feel exhaustion of body and mind, so Maomao is going to drive out Happy, relax.

Sit in your cab turned the key, however, at the sound of "whoops" is the starter. Then Maomao strike the wiper switch, I saw two rubber rod "lazy" on the windscreen to pull back and forth. A preliminary judgment: the battery's dead.

Maomao car has opened more than four years, it is time to change the battery, however, when picking the battery with a "new found" Maomao - currently vehicle storage battery most also use lead-acid batteries, give priority to with valve control sealed lead-acid battery.

That's strange, why is developing rapidly in recent years, the lithium battery, there is no universal to the battery?

We know that lithium battery with light weight, high energy density, green environmental protection and other characteristics, is widely used in new energy vehicles in recent years power battery areas, and in the automotive battery seldom seen hide or hair of lithium battery, is this why?

First of all, the security.

There is no popularity in the field of car battery to lithium batteries. A big reason is "safe". This was related with lithium battery's own properties. It is understood that the discharge temperature of lithium-ion batteries was minus 20 degrees to 60 degrees, the charging temperature of 0 degrees to 45 degrees, easily lead to fire, explosion and collision. Lithium battery, as it were, the most afraid of high temperature and low temperature.

Open the hood of a net friend know, traditional fuel vehicle engine work when the temperature is very high, and to maintain an optimum working temperature, in order to maintain in this range, the engine cylinder can through various channels to internal redundant quantity of heat to to the engine compartment, which lead to the car. At this time the temperature of the engine bay all too clear.

What's more, now many vehicles are equipped with a turbocharger, and turbocharged using engine exhaust gas drive, the temperature is in commonly 400-500 degrees, such as high temperature for normal lithium battery, is undoubtedly a disaster.

Besides temperature, impact extrusion for lithium battery is unbearable. We know that most of the automotive battery is arranged on the nacelle, and if the vehicle is equipped with lithium battery one thousand traffic accidents occurred, lithium battery to be squeezed, the result is likely to be a fire or explosion, the secondary injuries, members can even be hurt inside.

Second, performance and cost.

In general the performance of lithium-ion batteries is more outstanding, why will also discuss its performance here? Thing is not so simple, we to calculate a simple account.

Lithium battery discharge efficiency at low temperature is very low, so if you want to start the vehicle, you need to 5 times more at ordinary times the battery power supply at the same time, we take the small commonly used 40 of the battery while the Ann calculation, in the industry leading brand Panasonic Samsung 18650 type battery capacity can reach 2900 mAh, parallel 14 day or so to reach 40 ampere-hour capacity;

, on the other hand, if you want to improve to start the battery voltage is so high, at least in series four groups, namely the section 14 * 4 = 56, we take the section 20 yuan to calculate high capacity battery, lithium battery needs to spend 1120 yuan, the cost relative to the RMB or of lead-acid battery, a lot higher.

And car battery need to more than 100 ampere hour when starting the discharge current, so the battery to meet at least 5 c (5 discharge) can, lead-acid batteries can be easily done this for a fact, lithium battery, on the other hand, large current will directly affect the service life of lithium batteries, increase the cost.

Repair rate, due to the current production and application of lithium battery only 20 years of history, in the aspect of part design and process, there are room for improvement, which caused a lot of small and medium-sized domestic manufacturers production of lithium battery high repair rate; Lead-acid batteries, after one hundred years of development, the technology is relatively mature and stable, use more at ease.

One more thing, lithium battery can't accept the electricity power amplifier and complement, once added to power amplifier of lithium batteries, are likely to be spontaneous combustion or explosion, it is also significantly restrict the use of it in the car.

Write in the last:

The development of new energy vehicles in recent years, domestic battery field is developing rapidly, power batteries, lithium batteries (nickel cobalt manganese acid lithium battery, etc.) with green environmental protection, high energy density, light weight, and many other advantages by many manufacturers into the new energy car, however the safety of lithium-ion batteries, the respect such as performance and cost limitations, determines its it is difficult to apply in terms of fuel car battery, look forward to the engineers for its further improvement, can foster strengths and circumvent weaknesses, maximize the advantages of lithium-ion batteries.

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