Charging Method for Tri-Lithium Battery

Using the correct charging method, the Sanyo lithium battery can be fully charged. If the charging method is not correct, the Sanyo battery can not be charged enough, and the weight of the Sanyo battery will decrease in capacity, shorten its life, and cause overcharging.

According to the CB/T18287-2000 general specification(hereinafter referred to as the general specification), the charging system of Sanyo lithium batteries is constant current + constant pressure.

The current Sanyo lithium battery charger often uses three-stage charging method(linear charging method), namely pretreatment, constant current charging, constant pressure charging. If the end voltage of the battery is lower than the low voltage threshold, it first enters the pretreatment phase(charging the battery by trickle-down charging). If the end voltage of the battery is higher than the low pressure threshold, the normal constant current-constant pressure charging method is carried out directly.

Sanyo lithium battery avoid continuous charging with constant current, this charging method will cause the electrode potential to rise, lithium ions are not fully embedded in the graphite electrode, so it is difficult to make the battery fully charged. The capacity of charging tri-lithium batteries by constant current and constant pressure is 20 % -30 % higher than that of a single continuous constant current.

The battery capacity decays faster if the charging current is too large or only the constant voltage is used for continuous charging.

The standard charging current is 0.2 C5A, and the fast charging current is greater than the standard charging current. Obviously, fast charging is at the expense of the performance of the animal battery.

The pulse charging method is also divided into three phases. The first two stages are the same as the linear charging method. Once the battery voltage reaches the charging limit voltage, the charger begins to enter the third stage. That is, the pulse charging method used in the pulse charging phase can weaken the polarization effect in the battery., improve the value of the maximum charging current, Shorten battery charging time.

Steps / Methods

1, according to the CB/T18287-2000 general specification(hereinafter referred to as the general specification), the charging system of Sanyo lithium batteries is constant current + constant pressure.

The current Sanyo lithium battery charger often uses three-stage charging method(linear charging method), namely pretreatment, constant current charging, constant pressure charging. If the end voltage of the battery is lower than the low voltage threshold, it first enters the pretreatment phase(charging the battery by trickle-down charging). If the end voltage of the battery is higher than the low pressure threshold, the normal constant current-constant pressure charging method is carried out directly.

2, Sanyo lithium battery avoid continuous charging with constant current, this charging method will cause the electrode potential to rise, lithium ions are not fully embedded in the graphite electrode, so it is difficult to make the battery fully charged. The capacity of charging tri-lithium batteries by constant current and constant pressure is 20 % -30 % higher than that of a single continuous constant current.

3, Sanyo lithium battery charging current is too large or only constant pressure continuous charging, the battery capacity attenuation speed is accelerated.

The standard charging current is 0.2 C5A, and the fast charging current is greater than the standard charging current. Obviously, fast charging is at the expense of the performance of the animal battery.

4, Pulse charging method is also divided into three phases. The first two stages are the same as the linear charging method. Once the battery voltage reaches the charging limit voltage, the charger begins to enter the third stage. That is, the pulse charging method used in the pulse charging phase can weaken the battery. Polarization effect, Increase the value of the maximum charging current and shorten the charging time of the battery.

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