EV battery
New lithium-ion batteries need to be fully charged for 12 hours to activate?
by:Vglory
2020-12-05
Source: 2020 -
03 -
24 12:53 hits: times new lithium-ion batteries need to be fully charged for 12 hours to activate?
New lithium-ion battery needs charging 12 hours to activate?
After bought a new mobile phone, computer or electric cars, many people want to know whether the new battery can charge 12 hours.
Suppose I have, I want to fill a few times electricity?
Here, Dr Lithium introduces the technical aspects of the problem for you.
To answer this question, first of all to understand the 'memory effect!
Memory effect battery recall effect refers to the reversible battery failure, the performance of the battery can be recover from failure.
After a long exposure in a particular activity cycle, cell actively adhere to this particular trend.
This means that the battery charge like recalling users every day, the scale and mode of discharge, it is difficult to change as time goes on this model, can no longer do big charge or discharge.
This is defined as the earliest in the nickel cadmium battery, nickel cadmium bag battery there is no recall effect, sintering battery with recall effect.
Today's hydrogen nickel metal (
Nickel metal hydride)
Battery is not affected by this recall effect define the constraints, but they are lazy.
The first few times they need to be activated, they usually can be 300 - charging and discharging
Duration of 500 times, then they will find more and more short, short to you want to change your mobile phone.
The old batteries stored in the refrigerator for a few days, and then again use can improve the performance.
Why there will be a memory effect due to the traditional negative sintering process, cadmium particles are relatively thick, assumes that the nickel cadmium battery charge before the discharge completely from scratch, cadmium granule simply assembled into pieces, when the battery discharge form secondary discharge channel.
Batteries to store the discharge channel, as the next cycle of discharge endpoint, although the capacity of the battery itself allows the battery discharge to a lower channel.
Discharge process in the future, the battery will only remember the low volume.
In addition, in each use, any incomplete discharge will deepen this effect, lower the battery capacity.
In order to eliminate the effect, there are two ways, one is to choose the depth of the small current discharge (
Such as 0.
1 c to 0 v)
, one is to choose the big electric current charge and discharge (
Such as 1 c)
A few times.
In practice, the method of eliminating recall effect is a strict specifications and operating process.
Improper operation will be counterproductive.
About the nickel cadmium battery, the normal maintenance is timing: deep discharge evenly every months (use
Or 30 times the cycle)
Depth of discharge (
Discharge to 1.
0 V/per day, or exercise, always use is the use of photovoltaic cells or use means, such as closing can reduce memory effects, but this is not to exercise, because it can't use tools (
Such as mobile phone)
1.
0 V/turn it off every day, need special equipment or finished my homework, because a lot of nimh battery charger this function.
Batteries to store the discharge channel, as the next cycle of discharge endpoint, although the capacity of the battery itself allows the battery discharge to a lower channel.
Discharge process in the future, the battery will only remember the low volume.
In addition, in each use, any incomplete discharge will deepen this effect, lower the battery capacity.
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