Power Inverter (Power Inverter) is a DC12V DC can be converted into electricity and the same AC220V AC power, for general use, is a convenient vehicle power converter. Car power inverter in the foreign market has been generally welcomed. In foreign countries due to the higher penetration rate of the car, go out to work or travel can be connected with the inverter battery drive a variety of tools and work. China's entry into the WTO, the domestic market more and more private transport, therefore, the car inverter power supply as a DC inverter in the use of mobile converter, will give you a lot of convenience, is a standing Of the car with electronic vehicle supplies.Choose a good inverter, should pay attention to the following questions:
1, must use metal shell products: car inverter due to power, heat is also large, if the internal heat can not be released in a timely manner, ranging from the life of components, while there is the risk of fire. Metal shell, on the one hand has good heat dissipation characteristics, on the other hand will not burn. Plastic shell products, it is best not to use. Even if the fan to help heat, one is to increase the use of noise, and second, the fan life is generally shorter, so that the overall reliability of the machine, if the day stopped, the consequences may be serious.
2, we must use split products, can not use one-piece products:
One of the shortcomings of the integration of four, first, because the car cigarette lighter socket is not very deep, integrated product rear heavier, the car running the process of the bumps easily shake off the inverter or cause bad contact. Second, the integration of the inverter inserted in the cigarette lighter socket, the rear exposed longer, will affect the right hand of the shift operation, which is closely related to traffic safety, and pay attention to the. Third, due to the direct plug in the cigarette lighter socket, integrated inverter rear can not be used. Fourth, the one-piece shell is plastic, we all know that plastic is not high temperature, so the integrated inverter with cigarette lighter socket contact part of the high current will produce high temperature, leading to deformation or melting head, serious also cause fire The So whether from the use of security or from the use of convenience point of view, can not use one-piece inverter.
3, the same power products, the volume of almost the case, the preferred heavier: As the saying goes, "a penny goods." Heavy weight, indicating that the shell is thick, is conducive to heat, but also that the internal transformer power margin, can lead a long time high-power load.
4, a variety of protection functions are perfect: a good car inverter, should have a perfect protection, in all cases can protect your car and power. Should also have a sound and light alarm function, to remind you to make timely processing of various situations. General should have the protection function for the input undervoltage, overvoltage protection, over temperature protection, output overload, output short circuit protection.
5, conversion efficiency: This is a very important indicator of the inverter, the higher the efficiency of the inverter, the longer the battery, the smaller the heat the inverter. Generally should reach more than 90%. But this indicator users can not test, the user can only with a high-power load, from the inverter heat to a simple distinction. A good inverter should be able to work for a long time without a charge when loaded with a nominal power of 80%.
6, cigarette lighter plug line to be thick, the length should be easy to use: to save costs, the current market, the general wiring products are not long, also 0.5 meters, the rear use is not so convenient, personally think that wiring or long Some, much easier to use.
7, the electrical power is greater than 150W, must use the battery clip directly from the battery to take electricity: car cigarette lighter socket can only pass the current around 10A, so the high-power inverter must reprovision a battery clip line directly from the battery The Now there are some manufacturers in order to save costs, 300W products are not equipped with battery clip line, the use of this product, ranging from burning car wiring, while causing a fire, please pay attention to the majority of the owners.
8, pay attention to the output socket form: to be able to use the national standard two-phase, three-phase plug. 90% of the market products are only American standard three-phase socket, it is very convenient to use. Things are small, but can explain the strength of the enterprise, personally think that the output of the national standard socket and universal socket products should be preferred.The use of car inverter
Because the inverter is an electronic product, so in the design engineers have been thinking of all aspects of the possible problems, so as to achieve more humane products in the circuit. Therefore, the general inverter will have: overvoltage, low voltage, power three aspects of the protection circuit. But for more than 300W inverter, not only contains the protection, but also add more temperature, low voltage alarm, fan power control circuit, so we use the process will be a variety of different operating errors.
1, no load, the inverter indicator light is normal, the output voltage is normal. But a plug in the load will hear the call, red light. The load does not work. This problem occurs, the main reason: you use the battery is not enough, so a load, because the load power is greater than the battery output power, so the battery voltage will drop to the low voltage protection circuit voltage, the inverter low voltage alarm and low voltage Protection circuits are working. This phenomenon appears in general performance: call is instant (some machine protection circuit is self-locking, so you can guarantee the battery, inverter, load does not damage), red light. Some of the inverter call a turn off, continue to call, until you pull the load. The red light is open and closed (the work protection circuit is self-healing, due to the load, the inverter battery is in the abnormal circumstances, it is easy to damage the battery.
2, the inverter instructions normal, the output voltage is normal. But a plug on the load will listen to constantly, the load work properly. This situation is also caused by improper use.
(1) is that you use the battery power is not enough, causing low voltage alarm, but the voltage has not yet reached the low voltage protection voltage. So you will hear long calls, but the inverter can work properly. There are two ways to deal with this problem: increase the battery or reduce your load.
(2) will appear in the inverter normal, the output voltage is normal. But a plug on the load will continue to hear this situation, there may be you use the input line is too small cause. This situation generally appears in the inverter more modified. The solution to the problem is to increase the input line. If it is 300W to 500W with 6 square lines, 1000W to use more than 10 square lines, and the size of the line with your input line length, such as 1000W with 10 square lines, not longer than 50CM, if you want to pull long lines, Which would use more than 16 square feet of the line. The longest main can be 1 meter.3, connected to the inverter, a red light, no output. This is mainly because your battery may overcharge, the voltage is too high. If there is a call, the problem is that the battery voltage is too low.
4, connected to the inverter fan does not turn. In general, the fan of the inverter is the output power control, that is, the fan speed is driven by the load you use. The advantage of doing so is to reduce the quiescent current and reduce the noise. So the fans are generally controlled in more than 100W turn, less than 100W fan is also normal.
5, a load, the inverter to shut down, re-boot, the inverter and normal, but then the load on the same off. This is mainly due to the following reasons:
(1) Inverter power protection due to excessive load power. For example: a nominal power of 300W inverter, then a 350W load, it will cause shutdown.
(2) the peak of the inverter is not enough. In general, the peak of the inverter is typically set at twice the nominal power. Such as 100W inverter, the peak up to 200W. But sometimes the peak of your load is more than 3 times, even if your power is 90W, 100W inverter can not drive, because the 3 times the peak is 270W, and it is greater than 200W. So buy the inverter must pay attention to the peak of the equipment.
(3) inverter power is not enough.