Nowadays, the use frequency of lead-acid batteries is very high, and charging lead-acid batteries is essential. Professional chargers are required for charging, and lead-acid battery chargers can not be used directly by taking one at random. They must be different aspects such as power matching. Here are some knowledge for everyone to learn.
Selection of lead-acid battery charger:
First, determine the battery pack voltage of your electric vehicle. The common battery voltage of single battery car is 48V or 60V, corresponding to 4 batteries or 5 batteries. Each battery is 12V, and the corresponding model is 6-dzm-xx. This means that there are several battery cells in each battery. For lead-acid batteries, 2V per cell.
Then 6 is 12V. If it is an 8-dzm-xx battery, each battery is 16V, four batteries are 64V and five batteries are 80V. This kind of battery is rare now. Most of them are 48V or 60V on the market.
Then, determine the battery capacity ah of your electric vehicle battery. Why judge capacity? This involves the charging principle of lead-acid battery, which generally goes through four processes: constant current, constant voltage, pulse and trickle. After the first three processes, the battery is basically fully charged. Judging the duration of these four processes depends on the battery capacity and charging voltage.
Therefore, if the capacity does not match, overcharge or undercharge will occur, which will reduce the battery life and even cause danger. Therefore, be sure to choose the corresponding battery capacity. Battery capacity is the last two digits of the battery model. Two wheeled battery cars generally have 12Ah and 20Ah. The three wheeled battery car has 30ah, 50ah and other high-capacity models.
Of course, the battery is usually installed in the battery box, and the model of the battery can't be seen. At this time, we rely on the original charger to distinguish. If the charger is lost, it's best to ask the merchant who buys the electric car what type of charger is suitable for the battery car, and then buy it.
In addition, you need to determine the positive and negative shape of the charger interface suitable for your electric vehicle. There are three common interfaces: round head, three vertical pin connectors, one horizontal pin connector, two vertical pin connectors and T-plug. In addition to circular, T-type plug can be compatible with three vertical, one horizontal and two vertical, so T-type plug can be selected.
As for the positive and negative poles, most electric vehicles are universal, such as Yadi, Xinri and Xiaodao. However, the charging ports of some brands, such as Qi, Lvyuan, lvneng, etc., are reverse connected.
Some small brands of electric vehicles even have different polarities with different models of the same brand. When selecting a charger, it is best to measure with a multimeter. If the polarity is opposite, you should choose the charger connected in reverse, or cut off the connector yourself and switch the two wires before connecting.
Finally, it is the brand we have always emphasized. Generally speaking, there are four causes of battery damage: water loss, vulcanization, imbalance and thermal runaway (charging drum). The first two account for almost 97% of battery damage in the market. However, the water loss is different with different charging methods.
Therefore, relatively speaking, it is better to choose well-known brand chargers that have passed the national inspection. Choosing a four stage charging dual timing charger helps to prolong the service life of the battery.
