Characteristics of a good battery charger
1. The battery charger can effectively prevent the battery from undercharging and overcharging. When the battery is fully charged, it can automatically stop to protect the battery to the greatest extent.
2. Reverse connection protection: When the battery is connected reversely, the charger can automatically protect
3. Short-circuit protection: when the output terminal is short-circuited, the charger can automatically protect
4. Temperature protection: When the internal temperature of the charger exceeds a specific maximum allowable value, automatic protection can be performed, thereby prolonging the life of the charger.
5. High charging efficiency: the charging efficiency of good chargers on the market can reach more than 85%, while the charging efficiency of general battery chargers can only reach about 70%.
The characteristics of inferior chargers
1. The battery is not fully charged, resulting in a short battery life
2. The charging time of the battery is too long, which will cause the battery to bulge and damage the battery.
3. In order to save production costs, the charging mechanism is made of poor quality raw materials, resulting in a short service life of the charger.
4. Lack of various self-protection systems, the charger has poor applicability and is easily damaged
5. The output voltage is unstable, causing damage to the battery and affecting the service life of the battery.
Battery Charger Charging Requirements
1. Select the rated power, voltage and current of the transformer
2. Necessary rectification, current limiting, and voltage stabilizing circuit components must reach the maximum indicators of the loaded voltage and current.
For storage batteries, the charger is the first to use a transformer charger. However, due to the large size, heavy weight, low cost and low charging efficiency of the transformer charger, it is rarely used. Electronic chargers are widely used. The input AC voltage of the charger is about 220V, and the output terminal is connected to the storage battery. The charging method is firstly, intermittent discharge and compensation by high current pulse charging, and secondly, constant current and constant voltage floating charge to provide stable power to the charged battery. charging voltage and current. The charger has the functions of output short circuit protection, output overvoltage, overcurrent protection and overshoot protection to ensure the service life of the battery.
Due to the development of fast charging technology, the concept of poor fast charging performance of traditional lead-acid batteries has been changed. Experiments have proved that most valve-regulated lead-acid batteries can withstand fast charging, and reasonable fast charging is not only harmless but also beneficial to prolong battery life.