UPS battery power storage battery capacity calculation and power preparation method

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

UPS power storage battery capacity calculation and power preparation method. The capacity of the UPS power supply is not directly related to the capacity of the battery. However, the charging current of the UPS to the battery is limited.

If the battery's capacity is too large in the specified time (generally 8 hours charge 90% or more) the battery is unsatument of. UPS battery capacity can be calculated according to load capacity, spare time, discharge depth of the battery, and loss of loss. UPS power storage battery capacity calculation method Due to each production plant, each series, each batch of Quality differences, the intrinsic quality is difficult to identify, so refer to long-term use when purchasing the UPS power battery Experience, it should be preferred that the large-scale brand-name products, the same capacity battery, preferably large, mass weight, thick plate thick, electrolyte specific gravity small storage battery.

The requirements of the UPS battery capacity are designed to consider the load of the system in the backup time and the maintenance time of the main electricity power failure; and take care of the multi-point at the same time. The selection of the UPS power storage battery capacity is determined according to the actual discharge current and the required alternate time. When the battery is selected, the current value of the battery should be calculated first, and then according to the discharge characteristic curve and user requirements of the battery production plant.

Alternate time for choice. The capacity accounting method of the rear of the UPS power supply is a lot, the constant power method (check method), the estimation method, power method, constant current method, etc., different accounting methods have different results, we are difficult to say which accounting method is the most accurate Each of the various accounting methods have a focus on the application of the battery, and the load conditions of the UPS power supply and the applicable occasion of the UPS power supply are used to select the appropriate battery capacity accounting method.

1. Battery maximum discharge current calculates the maximum discharge current of the battery to: IMAX is the maximum discharge current (a) of the battery; P is the rated output power (W); COSφ is a load power factor (for the UPS system, consider the COSφ of the system, if the system outputs For the application of the non-retrograde system, cosφ = 1); η is efficient; E critical is the critical discharge voltage of the monomer battery (10V of the 12V battery of the battery); N is the number of monomer battery of the battery pack. 2.

Dischaling current calculation Due to the change in the discharge process, the discharge current of the UPS power supply battery changes, the current value at the time of the battery is significantly less than IMAX, according to the battery of the battery, generally take 0.75 as the correction factor, that is, the actual battery required Discharge Current I = 0.75Imax3.

ups The power supply battery capacity calculates that after the actual discharge current value of the battery is calculated, according to the required alternate time, according to the battery discharge characteristic curve supplied by the battery production plant, find the supply of battery packs. The discharge rate, calculate the battery capacity required to configure the configuration in the formula. Reactive UPS power storage battery capacity is: c is the battery pack capacity to be configured; K is a safety factor, generally 1.

25; I is a load current (2V series battery considers 5 years, 12V series does not consider development); T is Discharge hours; n is the discharge capacity coefficient (communication storage battery is selected n = 0.9, power N = 0.95, UPS system n = 1); T temperature adjustment coefficient.

The battery plays an irreplaceable important role in various UPs. With the development of electrochemical technology, the sealing valve-controlled lead-acid battery has the vast majority of the power market. In the UPS, 12V / 40AH combination sealing valve-controlled battery is used.

It is characterized by maintenance, no need to supplement water, while the size is small, safe and convenient. How should UPS power? First, make sure your UPS device is much power, generally, the power of the ordinary PC or the industrial computer is about 200W, the Apple machine is around 300W, the server is between 300W and 600W, the power value of other devices can refer to the device Manual. Secondly, it should be understood that there are two representations of the rated power of the UPS: regarding the power (unit VA) and the actual output power (unit w), this difference is caused by the presence of reactive power, and the conversion relationship between the two is: At power * Power factor = actual output power rear pre-pre-collaboration, online interactive power factor is between 0.

5 and 0.7, the online power factor is generally 0.8.

The device is used to match the actual output power of the UPS as a basis for matching. Some dealers are intentionally or unintentionally confusing (VA) and (W) differences, this is to pay attention to users. The above is the UPS power storage battery capacity calculation and power preparation method, reasonable choice of battery capacity, is an important guarantee for the normal power supply of load equipment on load equipment.

The capacity is too large, the battery cannot be fully utilized, waste resources; the capacity is too small, and the user's demand for the backup time is not satisfied, and the amount of life of the battery is unlucky.

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