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Lithium-ion battery shell infusion of electrolyte --- sealing --- formation, is constant pressure charging, and then discharge, so that several cycles, so that the electrode fully wet the electrolyte, fully activated, to meet the capacity requirements, this is activated Process---dividing, is to test the capacity of the battery to select different performance (capacity) of the battery to classify, classify the battery, perform capacity matching, etc. The lithium-ion battery that has come out is activated to the user. .
The nickel-cadmium batteries and nickel-hydrogen batteries that we all use are also activated after they are activated. Some of them require the battery to be in the open state after activation. After the activation, the battery is sealed. This process can only be completed by the battery manufacturer. .
There is a problem here, that is, the battery from the battery factory to the user's hand, this time is sometimes very long, short one month, long half year, this time, because the battery electrode material will be passivated, so the manufacturer recommends the first use The battery ** is subjected to 3 to 5 full charge and discharge processes to eliminate the passivation of the electrode material to achieve ** capacity.
In the three national standards for nickel-metal hydride, nickel-cadmium and lithium-ion batteries issued in 2001, the initial capacity test has clearly defined that the battery can be deep-charged 5 times deep, and once it meets the requirements, the test Can stop.
This is a good explanation of the phenomenon I am talking about.
★ So called "second activation" is also possible, the user's first use of the "new" battery as many times as possible deep charge and discharge cycle.
â— However, according to the test (for lithium-ion batteries), the lithium-ion battery with a storage period of 1 to 3 months is subjected to deep-filling and deep-discharging, and the capacity increase phenomenon is almost non-existent.
Therefore, Xiao Bian believes that the newly purchased battery does not have the phenomenon of activation charging.
Does the battery need to be activated for charging? The answer is that the battery needs to be activated, but this is not what the user has to do. I have visited the lithium ion battery manufacturer. The lithium ion battery has to go through the following process before leaving the factory: