102450 polymer battery

　　What is the balancing technology of 102450 polymer battery?

　　In order to solve the problem of battery consistency, the industry has widely used balancing technology. At present, the industry has divided balancing technology into three types: passive balancing method, active balancing method and internal balancing method.

　　1. Commonly used equalization methods are active equalization method and passive equalization method based on power circuits. In the passive balancing method, a single rechargeable battery with high operating voltage is connected to an input resistor according to the power circuit to charge and discharge. According to more power circuits, it can be determined whether its operating voltage is the same as that of other single rechargeable batteries. If a When the rechargeable battery is terminated, the disadvantages of the passive equalization method are the energy consumption of a single rechargeable battery, heat generation, and long equalization time.

　　The characteristics of the passive equalization method are: when the equalization current is less than 1 hour, the component cost is relatively low, but there are two problems: 1. The energy consumption of the resistor is charge and discharge, and the energy consumption is current heat; 2. It is unlikely to charge and discharge the resistor. The choice is small, the battery is charged and discharged, and the operating voltage of the battery is usually higher depending on the characteristics of the rechargeable battery. When static data is equalized, the discharge is just a small rechargeable battery.

　　2. The active equalization method transfers the kinetic energy of the rechargeable battery to the battery with a lower operating voltage based on the consumption of the resistor when charging the battery.

　　The key feature of the active balancing method is the DC//cd/cd dual digital power amplifier balanced power supply circuit, which has high efficiency, battery charge and discharge and static data balancing in the entire process. The balancing current is large and the balancing rate is fast. However, there are two problems: 1. The technology is complex, the cost increases, and it is difficult to complete;

　　3. The internal equalization method uses BMS throughout the charging process to adjust and run the battery charging operation voltage optimization algorithm according to the current, so that the charging capacity of each single rechargeable battery in the lithium battery is basically consistent. The internal balancing technology is simple, with no kinetic energy damage, no additional battery charging process, no harm to the number of battery cycles, and no additional hardware configuration equipment. However, if the battery charging phase distance is large, it will take a long time to equalize.

　　The inconsistency of rechargeable batteries comes from the resistance, volume and transaction volume of the battery. However, the traditional consistency evaluation method and equalization method, as a safeguard measure, cannot reasonably increase the energy capacity of lithium batteries, and therefore cannot improve the consistency of lithium batteries. The problem has a negative impact on the application of combined rechargeable batteries.

　　Since DC internal resistance, electrode operating voltage and high energy capacity are the main parameters of the rechargeable battery, the basis of the charging process does not change in one or more cycles. After scientific research, SOC is used as the balance reference object to determine the correlation of the balance target, and the balance time is flexibly used to reduce the volume of the balance current.

　　From the perspective of the rechargeable battery intelligent management system, the main parameters of a single rechargeable battery were tested during the entire application process of lithium batteries, especially in the case of dynamic and static data.

Read recommendations:

18650 7500mAh 14.8V

Safety and explosion-proof measures for lithium batteries.CR2032 button cell batteries

Management Schemes for Multi-Series Lithium Battery Packs

Battery Pack direct sales

lithium 3400mah 3.7v 18650 battery