Detailed explanation of factors that affect the stability and reliability of UPS power batteries

Temperature has a great influence on the natural aging process of UPS power batteries. The specific test data stated that every time the temperature rises by 5 degrees Celsius, the battery life will drop by 10%, so the UPS design should keep the battery as temperature as possible. All online and backup/online hybrid UPSs generate more heat than backup or online interactive UPSs during operation. This is also an important reason for the relatively long battery replacement cycle of backup or online interactive UPSs. 2. Battery voltage The higher the battery voltage, the faster the aging. The battery is composed of a single primary battery. Each primary battery has a voltage of about 2 volts. The primary batteries are connected in series to form a battery with a higher voltage. A 12 volt battery is composed of 6 primary cells, and a 24 volt battery is composed of 12 primary cells. Packed into a primary battery and so on. When the UPS power battery is charged, each primary battery connected in series is charged. The slightly different performance of the primary battery will cause some primary batteries to have a higher charging voltage than other primary batteries, and this part of the battery will age earlier. As long as the performance of a certain primary battery connected in series decreases, the performance of the entire battery will also decrease. 3. Battery ripple current. Ideally, in order to extend the battery life of the UPS power supply, the battery should always be kept in a floating charge or constant voltage charge state. In this state, the charged battery will absorb a small charger current, which is called floating or self-discharge current. Ripple current occurs when the battery continues to supply power to the inverter, because according to the principle of energy conservation, the inverter must have an input DC power to produce an AC output. In this way, the battery forms a small charge-discharge cycle, and the frequency of the charge-discharge current is twice the UPS output frequency. 4. Battery charger The battery charger is a very important part of the UPS power supply. The charging conditions of the UPS battery have a great impact on the battery life. If the battery has been in a constant voltage or floating electrical charging state, the battery life of the UPS power supply can be maximized. In fact, the life of a battery in a charged state is much longer than that in a pure storage state. Because battery charging can delay the natural aging process of the battery, the UPS should keep the battery charged regardless of whether it is running or stopped. 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: The composition and basic requirements of the important components of lithium battery electrolyte