Analysis of series batteries equalization charging method

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

Lithium-ion battery manufacturer parsed tandide lithium ion battery equilibrium charging method. When the lithium-ion battery pack is substantially charged, the effect of ignoring the difference between the single battery capacity is ignored, and the battery is generally filled. The design of the protection circuit can meet the protection of the serial lithium ion battery pack, the protection is complete, can reliably overcharge, over-discharge protection, and achieve equalization charging function.

Lithium-ion battery manufacturer parsing tandide lithium ion battery equilibrium charging method series lithium ion battery is a common phenomenon in battery pack assembly. 1. The number of PWMs to be connected in series lithium ion batteries is 2 ¡Á (N-1), and n is the number of batteries.

Compared to still more. Moreover, energy transfer can only be transferred from a battery to a battery adjacent to it. If the number of batteries is more, the control algorithm is quite complicated, then the key issue is only cost.

2, tandem lithium ion battery, if you use BQ78PL114 + BQ76PL102, you can manage 8 batteries. If the electric vehicle should be 80, then 10 such battery packs are managed separately, such, the cost is new. So this IC should be a lithium-ion battery pack, 12.

8V lithium-ion battery pack, or a notebook battery, or an electric bicycle battery, or a laptop battery. 3, tandem lithium ion battery about PWM frequency, duty cycle, inductance capacity, three are interrelated. Ti's IC recommended frequency is 200kHz, which can reduce the inductance, thereby reducing costs.

Lithium-ion battery is identified by the battery due to the battery in the production process, from the coating film to become a finished product to pass many steps. Even with rigorous detection procedures, the voltage, resistance, capacity of each set of power is consistent, but it will also appear like this or such differences. Like a twin of a mother, it may grow exactly when it is just now, and it is difficult to distinguish it as a mother.

However, when two children grow up, there will be such or such differences in lithium batteries. After using a difference in a period of time, it is difficult to apply to a lithium battery. When a lithium-ion battery is charged in series, it should ensure that each battery is balanced, otherwise it will affect the performance and life of the entire set of batteries during use.

Commonly used balance charging techniques have constant shunt resistance equalization, discharging shunt resistance equalization, average battery voltage equalization charging, switching capacitance equalization charging, step-down converter equilibrium charging, inductance equalization charging, etc.

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