On-board chargers refer to conventional on-board chargers powered by car batteries (12V for cars, 24V for trucks), which are widely used in the field of lithium battery charging for various portable and handheld devices.
Such as: mobile phones, PDAs, GPS, etc.; car chargers must not only consider the actual needs of lithium battery charging (constant voltage CV, constant current CC, overvoltage protection OVP), but also take into account the harsh environment of the car battery (transient peak voltage, System switching noise interference, EMI, etc.); therefore, the power management IC selected for the car charger solution must also meet: high-voltage, high-efficiency, high-reliability, and low-frequency (conducive to EMI design) switching power supply chips.
Versatility, portability, fashion, safety
With the development of the automobile industry, car chargers are widely used, showing the characteristics of versatility, portability, and fashion.
Versatility: This car charger is equipped with four AC adapters for American, British, Austrian and European regulations; it combines car charger, direct charging and USB charging into one to meet charging under different conditions; dual USB The output interface can charge multiple electronic products. And this product is also the world's first charger for charging iPad. It takes about 4 hours to charge the iPad. You can take the iPad for a drive.
Portability: Portability is a major trend in the development of today's electronic products. The unique folding car charger design is adopted to reduce the product volume to 6.9×5.6×3.1cm, which is extremely convenient to carry.
Fashion: For the high-end consumer group of car owners, the fashion of car chargers is also valued by manufacturers. Generally use ABS material and adopt piano baking varnish process, which is not only fashionable and exquisite, but also has a very good hand feeling.
Safety: The product has passed CCC, UL, FCC, CE and other international safety performance tests, and is guaranteed by insurance companies, which strongly guarantees the safety of use performance and consumer rights.
The car charger is an accessory for car owners to use the car charging source to charge digital products anytime and anywhere. Some high-end car chargers generally include 2 USB ports, which can charge two digital products at the same time. Such products generally have overload protection, short-circuit protection, high-voltage input protection, high-temperature protection, and four-fold safety protection functions to ensure safe use. The car charger can be used in the car and can also be used for home use, realizing the three-in-one multi-function use of car charger, direct charging and USB charging. The car charger is an accessory for charging digital products anytime and anywhere with the convenience of the car power supply, saving you the cost of the battery. Such products generally have overload protection, short-circuit protection, high-voltage input protection, high-temperature protection, and four-fold safety protection functions to ensure that you can use them safely.
1. The computer automatically protects the chip, which can be used with confidence no matter where it is, providing good protection for your device when charging.
2. Car charger plug structure, built-in fuse, overvoltage current is too large, the fuse will automatically blow to protect the safety of the machine.
3. The car charger also has a USB interface, which supports various USB interface power output.
4. IPhone/ipad can be charged through the power output interface.
Matters needing attention
The car charger uses the car cigarette lighter as a power socket to directly charge the mobile phone. Since the voltage provided by the car is low, only an overload protection circuit is required inside the car charger. The front end of the car charger socket is designed with a fuse, when the current exceeds the overload protection circuit tolerable range, the fuse will be blown immediately to play a protective role. Note: It can be charged only when the car engine is started! Regarding the car charger, there are the following precautions:
1. Do not use the car charger in a humid environment
2. Do not store the car charger in a humid environment
3. The suitable temperature for use is 0-45℃
4. Keep away from children
5. Avoid lightning strikes
6. Pull out the plug in time after charging
Therefore, out of safety considerations, we must buy regular brands and purchase genuine, inferior products that are prone to safety hazards. Car chargers are also divided into two types: direct charging and dock charging. You can choose to buy a cradle charger, that is, remove the battery and charge it to avoid the phenomenon that the mobile phone is burned due to the unstable power supply of the vehicle and the sudden high peak voltage output. If you want to burn it, you will also burn the battery to reduce the loss. There are various car chargers available on the market. If you choose to shop online, you must go to a regular website to buy.
how to buy
Car charger products are all over the market and the Internet. Whether the car owners buy in stores or online, the types are of different levels. I don’t know which one to compare. We also know that the price of car chargers is not very expensive, but if you buy If it is a counterfeit product, it is very likely to burn out car fuses and digital products. It may even endanger personal safety. So how should we improve the skill of screening high-quality car chargers?
1. First of all, you must know the output voltage of your car's cigarette lighter
The output voltage of a car is 12V and that of a truck is 24V. Most general-purpose on-board chargers (12V) are suitable for cars. If it is other models, you need to choose the corresponding voltage standard. There are many car chargers that can meet the 12V-24V standard, which is applicable to all models.
2. To understand the automatic protection function of the car charger
Whether the car charger has the functions of overvoltage, overcurrent, overheating, and short circuit protection, the shell should be made of ABS flame-retardant environmental protection material, which can prevent external combustion and is beautiful, and it will not leave fingerprints on the hand.
3. Pay attention to the voltage and current
When purchasing a car charger, pay attention to the voltage and current of the supporting equipment. For example, the iPhone is 5V/1A, and most of the tablet computers and mobile power supplies are 5V/2A. If the dual-USB interface car charger charges both mobile phones and tablets at the same time, the total current of the car charger must be at least 3A or above, otherwise the charging speed will not only drop significantly, but will also overheat or even charge the device.
4. Know what the total current of the purchased charger is
Generally, regular products will indicate the output current in A on the charger. If the charger that has been purchased is not only slow but also generates a large amount of heat when charging the mobile phone + tablet, it means that the current is not up to the standard.