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Author ：Iflowpower – Portable Power Station Supplier
Skills of multi-UPS power supply battery pack equilibrium charging method. In recent years, the battery is being widely used in traffic, electricity, communications and other fields. In order to achieve a higher output voltage, the monomer battery is usually used in series.
Xiaobian will introduce you to the skills of series UPS power storage unit balanced charging methods. Serial UPS Power Supply Battery Group Balanced Principle 1. 2, the various battery management ICs in the series UPS power storage unit market are supplied with voltage equalization management.
Users can implement only some of the components, but unfortunately, most battery management ICs are all Use resistance shunt / power to power the balance between each battery. 3. The series UPS power supply battery pack is in the age of lead-acid battery, and there is a variety of ways on the balance of the battery pack.
4, tandem lithium-ion battery resistance shunt, energy consumption. This approach is the most common in the market and the easiest way. The protective board for the battery pack exhibited at the electric bicycle show in 2009, including the protective plate for electric vehicles, and their equilibrium mode is realized by resistance.
The reason is also very simple: easy to implement, no better ways. In fact, it is also the lowest cost. The advantages and disadvantages of the series UPS power storage battery group: 1, low cost, simple structure, easy to implement.
2. Series UPS power storage batches about no research and development capabilities, this is also the only way. Disadvantages: The shortcomings of series batteries are also obvious: waste energy, fever, and low equilibrium efficiency, because after all, the energy consumption energy is time, in the case of high-power battery packs, this is also considered.
In fact, many large companies now doing electric sprayer battery packs that use the lithium-ion battery, but companies like some international classes have achieved more advanced equilibrium ways, making energy efficiency higher, faster than faster Way. Method for charging charging in series UPS power battery pack ● Additional parallel unbalanced circuits on various cells of the battery pack, which has reached the purpose of delivering. In this mode, when a battery is fully charged, the equalization device can prevent it from being overchaled, and convert excess energy into thermal energy continues to charge the battery still fully charged.
● Each monomer is passed one by one before charging, the same load is discharged to the same level, and then constant current charging, this time it guarantees a more accurate equilibrium in each monomer. However, due to the physical difference between the UPS power battery pack, it is difficult to achieve a consistent effect after each single depth discharge, even after the discharge has reached the same effect, there will be a new imbalance in the process of charging. ● On time, order, separately detect and uniform charging of the unitary battery in the battery pack separately.
When charging the battery pack, it is possible to ensure that each of the battery packs does not exceed or over-discharge, thereby ensuring that each of the battery packs is in a normal operating state. ● Use the minute principle, through the control and switching of the switch components, make the additional current flow in a relatively low battery to achieve a balanced charging. This method is more efficient, but the control is more complicated.
● The voltage recovery of each battery is constructed by the voltage parameters of each battery. When equilibrium charging, the capacitor is connected to the adjacent two battery through the control switch, and the charging of the high voltage battery is received, and the low voltage battery is discharged until the voltage of the two batteries tends to be consistent. This balancing method solves the problem of battery voltage imbalance, but this method is important to use less battery.
● The entire system is controlled by single-chip microcomputer, and the monomer battery has a separate set of modules. According to the setup program, the module is charged for each unit cell, and the charging is automatically disconnected. This method is relatively simple, but the cost is increased in the number of cells, which is not conducive to the decrease in system volume.
The low and unreasonable charge and discharge system of battery management technology is also an important reason for the shorteness of battery life. For the battery pack, the inconsistency between the monomer cells is also an important factor in the inconsistency between the battery pack. There are many ways to charge the UPS power battery, and the scientific reasonable charging method will greatly improve the maintenance effect of the battery.
The UPS system is intelligent, and the use of maintenance-free batteries, easy to use; use the process or more attention to maintenance and maintenance, can extend the service life of the UPS power battery. .
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