How to choose Battery Charger

The DC Charger uses high-frequency power technology and uses advanced intelligent dynamic adjustment charging technology. The power frequency machine is designed based on the traditional analog circuit principle. The internal power components of the machine (such as transformers, inductors, capacitors, etc.) are relatively large. Generally, there is less noise when the load is larger, but the model is bad. The power grid environmental conditions have strong resistance, and the reliability and stability are stronger than those of high frequency machines.

When the mobile phone is charging, the voltage is high. If other operations such as talking and playing games are performed at the same time, the load of the mobile phone will be higher and higher. If the mobile phone user uses a poor quality charger, there is a poor material of the Transformer coil, and the workmanship is reduced. Problems such as poor insulation of materials, coupled with unfavorable external environment and aging of electronic components, mobile phone charging is likely to pose a safety hazard.

So this article mainly introduces why the charger will explode _ can still be used after the explosion of the charger, how to prevent the charger from exploding and how to choose a safe and reliable charger, follow the small series to understand.

1, long-term unplug charger

Many people have such bad habits. The charger is always plugged into the socket. When charging is needed, plug the USB interface. After charging, directly unplug the phone and never put the charger from the socket. Pull it out.

2, mobile phone charger aging

Although it is a regular original charger, after a certain period of time, the internal components are aging, not only the charging speed becomes slow, but also the risk of explosion may occur when the voltage is unstable, so the charger is preferably about two years. Change it once.

3, buy inferior products

Many roadside stalls, or small shops on the street, sell chargers at prices below 10 yuan. They can be fully charged when used, but there is no logo, even the most basic brand names are not available. However, many people have broken chargers, or want to have more chargers in the office. Because they are cheap, they choose to buy such chargers. So this is also one of the factors that caused the explosion of mobile phone chargers.

4, charger failure or design defects

There is no overload or short circuit protection, and the AC voltage is directly input when the transformer is faulty, causing the current to excessively break through the mobile phone. If the mobile phone's overload protection design is better, the battery quality is good and the design is reasonable, it will only break through the charging port of the mobile phone, because the overload protection insulator has blocked the input current.

5, battery failure

Failure of the battery itself or poor quality may also cause a fire, but the probability is smaller than the charger, usually caused by some external factors such as excessive temperature, but if the mobile phone circuit is designed reasonably, high current cannot reach the battery. It will be cut off by the protection system, and the battery itself will naturally not catch fire.

Cannot be used, please do not continue to use it to prevent accidents or burn other electrical products.

1. Do not charge for a long time while charging. Estimate the time before charging and control the charging time to reduce the control failure and increase the explosion probability.

2, charging treasure should be placed in a ventilated, room temperature, dry, do not use and save in an overheated, humid environment.

3, charging treasure is also afraid of "cold", below 0 ° C, it is best to put on the velvet bag antifreeze. Because the charging of the plastic material shell is low in toughness at low temperatures, cracks and breaks are easily caused by external force, and the outer casing collides and may explode.

4, do not use a rough way to pressure it, usually pay attention not to heavy pressure, fall, strong vibration, so as not to cause short circuit, resulting in short circuit detonation during charging.

5, usually pay more attention to the appearance, when the charging treasure is abnormal, it should be replaced as soon as possible.

6, the use of charging treasures should not be too frequent, it is easy to shorten its service life, and will increase the risk of danger.

7, the choice of charging treasure is also very important, try not to use a charger with a large capacity and cheaper, choose a regular certified charger.

8. When charging, please use the original charging head as much as possible, or use the charging head, charging cable and adapter with the same parameters.

9. Charging treasure is not allowed to be checked. Baggage is easily crushed and collided in a narrow cargo compartment. If the charging treasure is in contact with a metal object such as a key in the baggage, causing a short circuit, etc., it may cause spontaneous combustion.

1, to have 3C certification

China implements the CCC certification system for products that affect consumer safety. The power adapters certified by CCC meet the national mandatory standards for electrical safety and electromagnetic compatibility. At present, the market is full of many universal power adapters that have not been certified by CCC, or fraudulent consumers with fake CCC logos. The authenticity of the CCC logo can be found on the website of the National Certification and Accreditation Administration.

2. Is there a "back" sign?

In addition to the CCC logo, it is also necessary to pay attention to whether there is a sign like “back” on the charger. It means that the charger is double-insulated, that is, the charger has two insulation methods. The first insulation method does not work. The second will take effect.

3, the shell should be flame retardant

The reason why the inferior cottage goods are repeatedly accidents is because the cottage charger is cheap, the good quality charger shell uses the original plastic, the hardness is high, and the inferior charger uses the recycled plastic which is half cheaper. It is not a hard, flame-retardant plastic. It is easy to be burnt soft or even cause fire when charging.

4, observe the appearance

A good mobile phone charger will not have burrs on the appearance, and the seams will be flawless, and the metal contacts will be thick and even. Now there are a lot of knockoff goods that can be made the same as the original, it is difficult to distinguish between true and false, but the internal structure is very different. Generally speaking, the better the quality of the charger, the more electronic components are used internally. There is a certain weight in the hand and it will not be deformed by pressing hard.

5, plugging and unplugging smoothly, not excessive fever

The charger must be plugged and unplugged easily and smoothly, and the charger with difficulty in plugging and unplugging can be easily damaged. In addition, it is normal for the mobile phone charger to be a little hot when charging (30 to 40 ° C is normal temperature), but overheating is not normal, such as the skin can feel very hot. Similarly, if the body is overheated when the phone is charging, it is not normal, and the battery is easily damaged due to the high temperature for a long time.