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• Time:2024-11-04

An electric charger, also known as an electric vehicle charger or battery charger, is a charging device specially configured for electric vehicle batteries. The following is a detailed introduction to electric chargers:

I. Classification

Electric chargers can be classified according to whether they use an industrial frequency (50 Hz) transformer, which can be divided into two main categories:

Chargers with industrial frequency transformers: This type of charger is usually large, heavy, and power-consuming, but reliable and relatively cheap. Freight tricycle chargers often use this type of charger.

Switching power supply charger: This type of charger is power-saving and efficient, but relatively easy to damage. Electric bicycles and electric motorcycles often use this type of charger. Switching power supply chargers can be divided into two categories: half-bridge and single-excitation, among which single-excitation is divided into forward and flyback. Half-bridge has high cost and good performance, and is often used in chargers with negative pulses; single-excitation has low cost and high market share.

II. Working principle

The working principle of an electric charger is to filter and suppress interference of 220v AC, rectify it into pulsating DC, and then filter it to form stable DC. Then, through the action of components such as pulse width modulation integrated circuits, the high-voltage pulse is reduced to a low-voltage pulse, which also plays a role in isolating high voltage and preventing electric shock. Finally, through the action of components such as rectifier tubes and filter capacitors, a stable charging voltage is obtained to charge the battery.

3. Charging process

Electric vehicle chargers generally adopt a three-stage charging mode, including constant current stage, constant voltage stage and trickle stage. In the constant current stage, the charger charges the battery with a constant current; in the constant voltage stage, the charger charges the battery with a constant voltage, and the current gradually decreases; in the trickle stage, the charger charges the battery with a very small current to ensure that the battery is fully charged.

4. Precautions

Matching: The charger should match the battery model, voltage and current of the electric vehicle. Use original or certified chargers, and avoid using inferior or incompatible chargers to avoid safety accidents or damage to the battery.

Quality: Purchase chargers with reliable quality, and give priority to brand products with production licenses and good reputations.

Use environment: Charge in a well-ventilated, dry, and open flame-free environment, and avoid charging in a humid, high temperature or low temperature environment.

Connection sequence: When charging, plug in the battery first, then add the mains; after it is full, cut off the mains first, then unplug the battery.

Charging time: Arrange the charging time reasonably to avoid overcharging the battery. When the charger indicator shows that the charging is complete, the power should be cut off in time.

Monitoring status: During the charging process, the working status of the charger and the reaction of the electric vehicle should be observed at any time. If any abnormality is found, such as overheating of the charger, odor or battery bulging, the charging should be stopped immediately and the cause should be checked.

V. Maintenance and care

Regular inspection: Regularly check the appearance, plugs, wires and other components of the charger for damage or aging. If there is any abnormality, it should be replaced or repaired in time.

Cleaning: Clean the charger shell and heat dissipation holes regularly to ensure that the charger can dissipate heat normally.

Storage: When the charger is not in use, it should be stored in a dry and cool place to avoid long-term exposure to high or low temperature environments.

In summary, the electric charger is an important part of the electric vehicle, and its performance and quality directly affect the charging effect and battery life of the electric vehicle. Therefore, when using and maintaining the charger, relevant regulations and precautions should be followed to ensure the normal operation and safety of the charger.

If you need to purchase an "electric charger", you can consult us online or by email (sales@hjlcharger.com).