UPS lead -acid battery technical parameters -Lithium - Ion Battery Equipment
UPS lead -acid battery technical parameters
UPS lead -acid battery is one of the most important devices for energy storage power stations. The cost accounts for about 80%of the system. The technical parameters of the battery are very important for the system design. The following uses lead charcoal lead -acid batteries as an example to explain the key parameters of the battery. , During the depth of discharge, the number of cycles, and so on. When designing the battery and inverter, pay attention to the maximum charging current of the battery.(Lithium - Ion Battery Equipment)
1. Battery capacity
The capacity of the UPS battery is determined by the number of active substances in the battery, and it is usually expressed by Ah AH or MAH. For example, the nominal capacity of 250Ah (10HR, 1.80V/single, 25 ° C) refers to the capacity of a single battery at a current of 25A at a current of 25A at 25A.
2. The rated voltage
The power difference between the positive and negative electrode of the UPS battery is called the rated voltage of the battery. The rated voltage of common lead -acid batteries is 2V, 6V, and 12V. The lead -acid batteries of the monomer are 2V, and the 12V battery is connected in series from the battery of 6 monomers.
3. Maximum charging current
UPS lead -acid batteries are two -way, with two states, charging and discharge. This current is limited. Different batteries, maximum charging and discharge currents are different. The battery charging current is generally represented by the multiple of the battery capacity C. For example, if the battery capacity C = 100AH and the charging current is 0.15C, it is 0.15 × 100 = 15A.
4. Discharge depth and cycle life
During the use of UPS batteries, the percentage of the capacity of the battery accounts for its rated capacity is called discharge depth. The depth of discharge depth has a deep relationship with the battery life. The deeper the depth of discharge, the shorter the charging life. The UPS battery has experienced a charging and discharge at a time, called a loop. Under certain discharge conditions, before the battery works until a certain capacity specified, the number of cycles that UPS batteries can withstand is called the cycle life.
The number of UPS batteries is different. The traditional fixed lead -acid batteries are about 500 ~ 600 times; the starting type lead -acid battery is about 300 to 500 times; the circulation of the valve -controlling lead -acid battery is 1000 to 1200 times. The deeper the daily discharge depth of the battery for a long time, the shorter the life of the battery; the lighter the depth of discharge, the longer the battery life.
5. The energy of the battery
The energy of the battery refers to the power that the battery can give under a certain discharge system, which is usually represented by Wak (WH). The energy of batteries is divided into theoretical energy and actual energy. The energy of the UPS battery is also related to temperature. The lower the temperature, the lower the activity of the battery, the lower the capacity. For example, at minus 20 degrees, the capacity is 60%. At zero, the capacity is 82%, and at 40 degrees, the capacity is 106%.
UPS battery advantage and disadvantage analysis
UPS lead -acid battery, as a device for storage energy, has the characteristics of high electrometer energy, good rechargeable reversibility, wide range of temperature range, rich and cheap raw materials, etc. It has obtained extensive use. Although the lead -acid battery has these advantages, it is in the data, but in data, it is in the data. In the center, the use of large -scale lead -acid batteries has also exposed its disadvantages. The weight of the machine room load, high maintenance requirements, short relative life, and toxicity caused by its weight.
● High maintenance costs
The battery used in the current UPS products is usually called "maintenance of lead -free battery". In fact, they have to check at least twice in the face to ensure that they have no corrosion, good working status, and close connection between a single battery.