Analysis of calculation method for UPS battery configuration

The total load power P total (W), taking into account the power factor of the UPS, can be calculated directly in volt-amperes (VA) of P total when calculating V low is the end voltage (V) after the battery is discharged, 2V battery V low u003d 1.7V; 12V battery V low u003d 10.2VV float is the floating charge voltage (V) of the battery, 2V battery V float u003d 2.3V; 12V battery V float u003d 13.8VKh is the battery capacity conversion factor (Ct/C10), 10Hr discharge rate The discharge rate of 1,5Hr is 0.9, the discharge rate of 3Hr is 0.75, and the discharge rate of 1Hr is 0.6. I is the battery operating current (A), T is the continuous discharge time (H), and V is the DC supply voltage of the UPS external battery (V) 2 , Calculation method 1, the number of 12V single battery N: Nu003dVu0026pide; the number of 122V single battery is 6N2, battery working current I: Iu003dP totalu0026pide;V3, actual battery capacity C: Cu003dI×Tu0026pide; Kh For example: 1KVA power supply backup time is 4 hours, choose UPS model HP9101H, Vu003d36V, then ①Nu003d36Vu0026pide;12Vu003d3 sections ②Iu003d1000VAu0026pide;36Vu003d28A③Cu003d24A×4Hu0026pide;0.9u003d124AH④UPS battery The amount can be selected as a group of 100AH u200bu200bwith 3 sections or 65AH with two groups of 6 sections. The result of the selection is deviated, depending on the needs of the user and the consideration of the cost. The battery capacity can be selected as 3 cells in a group of 100AH, or 6 cells in a group of 65AH. The selected results deviate, depending on the needs of users and the consideration of cost. Note: The usual capacity specifications of 12V batteries are 7Ah, 17Ah, 24Ah, 38Ah, 65Ah, 100Ah, 200Ah, etc. Excessive battery capacity selection causes a waste of investment. A small capacity selection not only fails to meet the UPS backup time, causing safety accidents, but also because the battery discharge rate is too large, which seriously affects the battery performance and life. You can calculate and determine the battery model and capacity through calculation methods such as power method, estimation method, and power source method according to the discharge performance parameters of the UPS battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What causes the thermal runaway of new energy batteries?