The charging control mode of lead-acid battery and lithium Ion phosphate battery charger is different. The voltage levels of lithium batteries and lead-acid batteries are not matched. There are many kinds of lithium batteries, and the battery performance and battery protection plate parameters may be different.
For lead-acid battery, the ideal charging current is pulse type. Pulse charging is best when the pulse DC charging is directly rectified and unfiltered by the 50-60Hz commercial power supply. Since the self discharge rate of lead-acid battery is relatively large, the constant voltage charging mode is generally used when power frequency charging is adopted. Since the lead-acid battery charger is generally set to two-stage or three-stage charging mode, the voltage level of lithium iron phosphate battery and lead acid battery is not matched. If the voltage is consistent, the lithium battery can be charged with lead acid battery, but the lead-acid battery cannot be charged with lithium battery, because the safety requirements of lithium battery are higher.
The battery charger organically combines the high-frequency switching power supply technology with the embedded microcomputer control technology, and uses the intelligent dynamic adjustment technology to optimize the charging characteristic curve and effectively extend the service life of the battery. It adopts four stages of constant current / W stage / constant voltage / small constant current charging mode, which is characterized by high charging efficiency, high reliability, simple operation, light weight and small volume.
Lithium iron phosphate battery pack can be charged with lead-acid battery, but it cannot be sent. If the voltage is consistent, the lithium ion battery can be charged with the lead acid battery, but the lead acid battery cannot be charged with the lithium battery, because the safety requirements of the lithium battery pack are higher. These two types of chargers cannot be mixed, or the battery will be directly scrapped. Because the charging modes of the lithium battery charger and the lead-acid battery charger are different. Lithium ion battery is charged at constant voltage and constant voltage, and lead-acid is charged in three stages.
Since the lead acid battery charger is generally set to two-stage or three-stage charging mode, the voltage level of the 48V lithium iron phosphate battery pack and the lead-acid battery is not matched. There are many kinds of lithium ion batteries, and the battery performance and battery protection plate parameters may be different. Therefore, unlike lead-acid batteries, lithium battery packs do not have universal battery chargers. Generally speaking, lithium ion battery packs are delivered with special chargers. In order to protect the lithium battery, a special charger is required. The charger shall be dedicated to the special vehicle, and the charger shall be matched with the type of battery. If the current is too high, the active material of the electrode plate will fall off and the battery will not be fully charged; If it is too low, the battery will not be able to accept effective charging, and the battery will not be fully charged; If the voltage is too high and overcharged, the current will exceed its bearing capacity and cause the battery to bulge.
Charging principle of lead acid battery the electrode of acid battery is lead and its oxide, and the electrolyte is sulfuric acid solution. During discharge, the positive electrode is mainly lead antimony calcium alloy fence, containing lead oxide as the active material, the negative electrode active material is lead, and the positive and negative electrodes are lead sulfate during charging. When charging, an external DC power supply shall be connected to restore the natural substances of the positive and negative electrode plates to the original active substances after discharge, and convert the external electrical energy into chemical energy for storage.
