Car inverter operates at a high current, high frequency power products environment, the potential failure rate is quite high, which is a low-voltage direct current into alternating current of the electronic device. It is a convenient vehicle power converter. In foreign countries due to the higher prevalence of motor vehicles, work or travel to a battery driven appliances and tools connected inverters work. After China entered the WTO, the domestic market more and more private transport, therefore, as a DC car power inverter for use on the move-AC converter.
1. The vehicle-mounted inverter Category
divided by the output waveform of the inverter is divided into sine and square wave inverter.
sine wave inverter 1.
and the output power we use every day or even better as sine wave AC power which electromagnetic pollution is not present. In recent years, there has been the quasi-sine wave inverter, the output waveform has a negative maximum value from the maximum value to the time interval, using the improved results, but still the quasi-sine wave by the fold line, belonging to a square wave category, continuity is not good.
In summary, high quality sine wave inverter provides AC drive type of load, but the technical requirements and costs are high. Quasi-sine wave inverter can meet most of our power, high efficiency, low noise, moderate prices, and thus become the market mainstream products. It can be used in notebook computers, televisions, combined audio, video cameras, digital cameras, printers, various chargers, game consoles, DVD players, mobile DVD, etc.
2. The square wave inverter.
poor quality output square wave alternating current, maximum positive to its negative to produce nearly maximum, causes severe destabilizing effect on the inverter and the load itself. Load capacity difference, only 40-60% of the rated load, not with inductive load, such as a belt load is too large, the third harmonic components contained in the square wave current will flow into the capacitive load current is increased, a serious when damage the load power supply filter capacitor. Make a square wave inverter using a simple multivibrator, which belongs to the technical level of 50 years, will exit the market.
2. The characteristics of the vehicle-mounted inverter
1, with car inverter overcurrent protection, overload protection, under voltage protection, high voltage protection, temperature protection function, without external electrical equipment and cause damage to the vehicle itself, will not forget to turn off the use of equipment caused by car not start properly.
2, the microcomputer chip control techniques, car power inverter converts more than 90 percentage, real-time current and voltage overload microcomputer automatic regulation and control, to achieve intelligent control board inverter.
3, overload voltage drop, the inverter-boardOutput voltage and output frequency accuracy and stability.
4, good load dynamic stability, load adaptability converter, battery protection function.
5, the over-temperature alarm, overload protection, car power inverter can automatically return to work. And built-in fuse.
6, the volume of non-small, delicate and beautiful appearance. Quiet and environmentally friendly working conditions, maintenance-free car inverter.
3. How to buy car inverter
1, choose a professional regular factory production or distribution agent car inverter products, manufacturers have a service commitment.
2, also pay attention to the waveform of the motor inverter, square wave power converter will cause instability, may damage the appliance is used, it is preferable to select the right sine wave or sinusoidal waveform latest car inverter, it is best not lower than the quasi-sine wave.
3, must be selected metal products: due to power a large automotive inverter, heat is also large, if the internal heat can not be dissipated, ranging from the impact component life, there is a risk of fire. Metal casing, on the one hand having good heat dissipation characteristics, on the other hand will not burn.
4, be sure to use split products, one can not use the product of formula: There are four integrated drawback:
First, since the car cigarette lighter socket is not deep, one product type rear heavier vehicle was in bumps easy to inverter shake off or cause poor contact.
Second, the integration of the inverter is inserted in the cigarette lighter socket,Exposed longer, it will affect the right hand shift operation, this is closely related with traffic safety, do pay attention.
Third, since directly plugged into the cigarette lighter socket, one can not use the back inverter. Fourth, one-piece shell is plastic, the plastic is not high temperature we all know, so one inverter with cigarette lighter socket contact portion by a large current will generate heat, resulting in deformation or melting of the head, but also cause severe fire . Therefore, both from the use of security or ease of use from the point of view, we can not choose one type of inverter.
5, the time of purchase to see if the car inverter over-temperature alarm and over-temperature protection.
4. Precautions car inverter
1, in strict accordance with the user’s manual to the use of an inverter, inverter input fuse burned out under normal use, it is best not own replacement: inverter input fuse burned down 99 percent cases are due to input MOSFET breakdown, if replacing the fuse continue to use, it is easy to blow out the fuse in the car. The correct approach is to contact your dealer or factory service.
2, the inverter output voltage is 220 volts AC, 220 volts and this is in a small space and is in a moving state, and therefore be careful. It should be placed in a more secure place to prevent electric shock. When not in use, it is preferably cut off the input power.
3, placed near the inverter not direct sunlight or heater outlet. Operating temperature of the inverter should not exceed 40 degrees Celsius; inverter will heat up when working, so do itsItems placed near or over.
4, inverter afraid of water, not to allow rain water or sprinkled.
5, when not using an inverter in a stopped state suddenly Ignition: Cars will produce a high impact ignition voltage, easy breakdown of the MOSFET devices of the inverter from being damaged inverter. The correct approach is to shut down the inverter re-ignition, and so continue to use the inverter after the car on fire.
6, when using high-power inverter, 150W or more electrical appliances, the inverter must be taken from line clip battery power directly from the battery: the car cigarette lighter. 15A fuses generally, only suitable for use in rated power 150W the following appliances. More than 150W must use the battery clip wire to take power directly from the battery, otherwise it will burn automotive wire harness and fuse.
7, do not touch the hand directly to the output terminal, while the power is small, but also of electric shock.