Principle and self test of portable energy storage box

The principle of portable energy storage box consists of five parts: main circuit, bypass circuit, battery input circuit, AC / DC converter, DC / AC converter, inverter and bypass output switching circuit, and storage battery. It has the advantages of portable mobile power supply, and can convert solar energy into electric energy and store it in the battery.

In the normal use of portable energy storage box, the battery will generally have the phenomenon of self discharge, so if it is not used for a long time, the energy will be lost, so it is necessary to charge and discharge regularly to prevent the loss of energy.

Self test of portable energy storage box:

1. Professional testing (inspection and testing) personnel can judge the quality of the battery by measuring the open circuit voltage of the battery. Take 12V battery as an example. If the open circuit voltage is higher than 12.5V, it means that there is more than 80% of the battery energy storage. If the open circuit voltage is lower than 12.5V, it should be recharged immediately. If the open circuit voltage is lower than 12V, it means that the battery storage energy is less than 20%, and the battery may not work normally.

2. Judging from the appearance, the general maintenance free battery due to the use of absorption electrolyte system, so in normal use, it will not produce any gas, but if the user improper use, resulting in overcharge of the battery, it will produce gas, at this time, the internal pressure of the battery will increase, thus, it will open the pressure valve on the battery, serious, it will make the battery bulge and change Once the above situation is found, the battery should be replaced immediately.

3. Discharge test should be done regularly to measure the battery voltage, and the battery + and - poles of the battery should be checked regularly to see if they are oxidized, and whether the battery terminals are loose. Moreover, the longer the battery is used, the more intensive the regular maintenance should be.

Finally, it should be reminded that the personnel responsible for the maintenance of portable energy storage box had better carry out the battery maintenance under the guidance of professional engineers, or directly ask professional engineers to carry out the maintenance, so as to avoid electric shock.