Automotive power inverters can convert direct current in a car into usable alternating current. Most devices need to modify the sine wave or pure sine wave AC power supply to work properly. After converting to household AC power, you can use the power generated by the car to run laptops, TVs, and stereo equipment.
When you go camping, hiking, or long-distance travel, having an on-board power inverter allows you to carry more electrical appliances. You can use AC power outlets anywhere in the car to power large accessories, which greatly improves your outdoor experience. The charging speed of the car power inverter is much faster than the car battery charger, and it is very easy to connect and use, and its price is also very affordable, which will be the reason why you must have a high-quality car inverter. Most household appliances are only suitable for alternating current. If you want to install and use household appliances on a car, you need to convert DC to AC. The power supply used by the car is DC, which can only provide a relatively low voltage, which is not enough to run most household equipment, so a car power inverter needs to be installed at this time.
The inverter is a DCtoAC transformer, which is a voltage inversion process with the converter. The converter converts the AC voltage of the power grid into a stable 12V DC output, while the inverter converts the 12V DC voltage output by the Adapter into high-frequency high-voltage AC; both parts also use more pulse widths. Modulation (PWM) technology. An excellent inverter must have the following points: the waveform should be as close as possible to the sine wave (waveform distortion), the frequency is stable at 50 Hz, the short-term overload capability is strong (output power factor), the protection measures are complete, and the inverter efficiency is high (output power factor), Small external electromagnetic interference (input power factor), large input voltage redundancy (input voltage range), etc.
Increase the input voltage. The power inverter can significantly increase the DC voltage entering it to a range more suitable for AC equipment.
Once the input DC power supply voltage rises, it will be converted to the same AC power supply in your home.
After completing these two steps, the power socket on the car's power converter can provide AC to any device that needs it to operate.
Single socket inverter: light and compact, simple design, can only charge one device at a time.
Multi-socket inverter: It can charge multiple devices at the same time. The main concern is whether the device is overloaded or overheated.
USB socket: Supports devices compatible with USB. It can provide enough power for devices with USB sockets, but it cannot provide power for most household or high-energy devices.
The sine wave inverter converts DC power into AC power by controlling the turn-on and turn-off of semiconductor power switching devices. The circuit that controls the on and off of the power switch tube is the control circuit of the inverter. The control circuit outputs a certain voltage pulse so that the power switch tube in the power conversion circuit is turned on and off according to a certain rule. At this time, the power main circuit The output is a specific harmonic combination, and finally, we get the voltage waveform we need through the filter circuit.
The difference between a sine wave inverter and an ordinary inverter is that the output waveform is a complete sine wave with a low distortion rate, so there is no interference to radios and communication equipment, the noise is also very low, the protection function is complete, and the overall efficiency is high. The reason why the sine wave inverter can output a complete sine wave is that it adopts SPWM technology which is more advanced than PWM technology. The principle of SPWM is based on the equivalent principle of the pulse acting on the time function device: if the pulse acts on the time function device, the product of the peak value and the acting time is equal, and the pulse equivalent can be approximated.
Oscillation phase of sine wave inverter: The inverter generates oscillation pulses through the IC circuit. These oscillations produce alternating positive and negative voltage peaks at specific frequencies. They are very weak and cannot be used to power large current output transformers, so these pulses are sent to the inverter's amplifier to accomplish the required tasks.
The AC voltage generated by the pure sine wave inverter oscillator is amplified to a high current level at this stage. The amplified current is in the form of AC, and the voltage is still at the battery power level. The voltage is too low to operate the appliance. In order to increase the voltage to a level suitable for electrical appliances, the amplified voltage is applied to the secondary winding of the output transformer.
When we use the inverters used in ordinary cars, we must know how much current is allowed by the insurance corresponding to the 12V car power supply of our car. Don’t be greedy for high power. Use electrical appliances with excessive power, in addition to putting your car in the car. There is no other benefit besides the burning of insurance. According to your actual situation, it is also wise to choose the corresponding low-power sine wave inverter.
The output waveform is good, the distortion is very low, and its output waveform is basically the same as the AC waveform of the commercial power grid. In fact, the AC power provided by a good sine wave inverter is higher in quality than the grid. The sine wave inverter has little interference to radio and communication equipment and precision equipment, low noise, strong load adaptability, can meet all AC load applications, and the overall efficiency is high; the output of the sine wave inverter is the same as ours The sine wave alternating current used in the daily power grid is even better, and there is no electromagnetic pollution in the power grid. In simple terms, it has a wide application range, strong load capacity, and excellent stability. It can provide the same AC power as ordinary households. In the case of meeting the power, it can drive almost any kind of electrical appliances. Its disadvantage is that the circuit and the relative correction wave inverter are complicated, the control chip and maintenance technicians have high requirements, and the price is relatively expensive. In the application of solar power grid connection, in order to avoid power pollution to the public grid, a sine wave inverter must also be used.
Although the improved sine wave inverter can complete the work in almost every case, in some cases, it may cause damage or inefficiency. The main category of equipment that can operate more efficiently with a pure sine wave inverter is electronic equipment that uses AC motors. Although the modified sine wave inverter is used, the setting can still work in most cases, but the efficiency may not be high. , Which may lead to excessive heat accumulation and potential damage.
Safety certification:
priority to use products marked with ETL mark. This means that the product meets all North American safety guidelines; the product protects against overload, overheating, short circuits, and other electrical faults.
Power output: Automotive power inverters can provide a variety of power outputs. It must be ensured that the purchased power converter can meet your needs for portable AC. Before buying, add the total power of all the equipment you need to use on the vehicle power converter to know your approximate power usage range.
A number of outlets:
Make sure that the outlets are also the same as standard three-hole grounded household outlets. Avoid situations that are not enough.
Length/material of cable insert:
A wired insert of appropriate length can reach the internal PowerPoint, or a cable of the correct length is required to reach the battery under the hood. If large-size conductors are installed in the cable, it can ensure the reduction of heat generation during power transmission. Moreover, it is preferably made of thick rubber or neoprene. A power inverter made of a strong metal alloy (such as aluminum) helps to make it lightweight and able to withstand high temperatures and environmental conditions.
Whether it is equipped with a built-in fan:
The built-in fan can help the car inverter maintain a longer cooling time, and can also extend the life of the inverter and reduce trips due to thermal overload.
Safety function/equipment protection: Automotive power inverters require a large amount of built-in protection, and must be guaranteed to have functions such as fuses, low battery outage rate, and high thermal protection.
Warranty: Try to buy products with a good warranty, get the longest warranty, and provide you with the most comprehensive warranty. A good warranty will only make you more at ease when making any type of purchase.
At the same time, you should also check whether there is a specific manual attached to the product, which can allow you to use the car inverter correctly and will not do anything that is not conducive to the inverter device during use.
Although the price range of the inverter is very large, it is also very important to choose a high-quality power supply manufacturer. Machines produced by good manufacturers often have very high-cost performance, and the set life can be maintained for a long time. Here we recommend Scientek Electrical Co., Limited, which is a professional manufacturer and solution manufacturer of power inverters, automatic voltage regulators, UPS, solar charge controllers, transformers, and battery chargers, which can provide on-time Competitive prices provide the highest quality and reliable products to meet your various needs.
In-vehicle power inverters do not emit smoke, liquid waste or harmful rays into the atmosphere, and can keep cars clean and enjoy reliable power. When you have a high-power sine wave inverter on a long journey, you can keep your computer, phone, and portable DVD player fully charged and ready to use. When you go camping and enjoy outdoor activities, you can carry a juicer, TV, or portable fan with you. In the event of a storm or other accident that causes a household power outage, the car inverter can serve as an emergency power supply for you to use. Automotive power inverters do not use fuels such as diesel or gasoline, and you do not need to spend extra money. They get power from your vehicle and provide you with extended power to meet the power needs of the day and achieve zero operating costs.
Before running the inverter, make sure to always start the engine, which can save battery power. If you want to use the inverter with the engine turned off, make sure not to let the inverter run for more than an hour.
If a secondary battery is used to power the inverter, make sure that it is well sealed and well ventilated in the car. Batteries in enclosed spaces can be unpredictable and fatal.
When not using the inverter, please disconnect the excess load to prevent the machine from overheating and save the battery power of the car.
Do not place the power inverter in direct sunlight, near heat sources, or on wet surfaces.
If you use the inverter on an old car, always disconnect the inverter after turning off the car. Avoid the situation where the battery is dead.
Automotive power inverters are usually connected in one of two ways: connected to the car's cigarette lighter or internal power outlet. This is the easiest way to plug in a car power inverter, just plug it in. The problem with connecting the power converter in this way is that you cannot use it to power higher power devices.
Hanging directly on the battery This is a more difficult method of installing the power converter because you have to go under the hood and hang the cable directly on the battery. The advantage of this is that you can use all the watts of power the inverter can produce.
It is important to note that some automotive power converters can be connected in both directions. They can unplug lower power devices from the vehicle's power plug, or they can connect higher power devices to the battery terminals.
Some people will choose to install the power inverter permanently somewhere in the car, while others will only take it out and connect it when needed.