Wireless charging technology mainly through electromagnetic induction, magnetic resonance and other ways to achieve non-contact power transmission. For electric vehicles, electromagnetic induction and magnetic resonance are the two main wireless charging methods. Electromagnetic induction wireless charging is suitable for fixed parking Spaces and is charged while the vehicle is parkedd=' The principle of automobile wireless charging '> The principle of automobile wireless charging is detailed
Electric vehicle wireless charging technology mainly uses the mutual inductance in the law of electromagnetic induction. It is also similar to a transformer, which inputs from the primary coil and then generates an induced current on the secondary coil. It mainly relies on the energy transmission between electricity and electricity, converts electricity into magnetism, and then induces electricity. Wireless charging is simply to charge electrical equipment through electromagnetic fields or electromagnetic waves without being connected by physical wires.
Wireless charging system mainly adopts the principle of electromagnetic induction. Wireless charging is often usedElectromagnetic induction, through the coil energy coupling to achieve energy transfer. When the system works, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or uses the 24V direct current end to supply power to the system directly. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
The breakthrough of wireless transmission technology is to find a way to "catch" electromagnetic waves, that is, to use the "resonance" principle of physics - two objects with the same vibration frequency can efficiently transmit energy. The system consists of a main circuit located outside the car and a circuit located inside the carThe secondary circuit, rectifier and drive system are composed.
Radio wave type: The principle is to convert environmental electromagnetic waves into current and transmit current through the circuit. The transmission distance of this wireless charging method is greater than 10 meters, which is suitable for long-distance low-power charging, and can also realize automatic charging anytime and anywhere. However, because of the low conversion efficiency, if you use this method, the charging time will be longer. Focused light: This is a new wireless charging technology "AutoCharge" developed by Microsoft.
The principle of wireless charging of cars is to convert electrical energy into electromagnetic waves, howeverIt is then sent to the receiver, and the electromagnetic wave is converted into electrical energy. Charging technology is not complex, mainly the use of electromagnetic induction and magnetic resonance, but the biggest difficulty of wireless charging is that the lack of a unified standard, charging time is too long, efficiency is too low, high cost.
Electric vehicle charging methods are mainly divided into two types, electromagnetic induction and magnetic resonance. The current application is more common wireless charging form. The principle is to use the principle of electromagnetic induction, there is a coil in the sending end and the receiving end, the primary coil through a certain frequency of alternating current, due to electromagnetic induction in the secondary coil to produce a certain current, so that the energy fromThe transmitting end is transferred to the receiving end.
First of all, fix the car wireless charger to the cab car magnetic wireless charging The appropriate position car magnetic wireless charging , Connect the data cable connector of the wireless charger automotive magnetic wireless charge to the cigarette lighter interface of the car automotive magnetic wireless charge , the other end is connected to the wireless charger car magnetic wireless charging , after fixing the wireless charger, ensure that the wireless charger will not slip, the wireless charger can be used normally.
Fixed wireless charger. The owner needs to buy a suitable wireless charger equipment, and then fix the wireless charger on the vehicle, and the fixed position should be convenient for the owner to take. Connect the cigarette lighter. One end of the USB data cable of the wireless charging device is connected to the wireless charger, and the other end is connected to the car cigarette lighter interface. Put it in your phone. You put your phone in a wireless charger, and it'sWill start charging.
Fix the car wireless charger to the appropriate position in the cab (the driver feels Ok, you can). Connect one end of the data line of the wireless charger to the car cigarette port and the other end to the wireless charger. After fixing the seat of the wireless charger, make sure that it will not slide, you can put the phone to charge it.
Start the Volkswagen Cruiser and turn on the wireless charging pad. Remove items from the charging pad and make sure the phone is placed face up on the pad. The charging symbol W will appear green on the screen, indicating that the phone is placed correctly and is charging.
1, the test results show that the wireless transmission distance is about 15 centimeters, but Fujitsu says that the wireless transmission distance can eventually be achieved several meters. It should be pointed out that the further away from the device, the more power lost in transmission. Fujitsu's system is similar to technology developed by Witricity, an American company, which also uses magnetic resonance to transmit electricity over distances of several meters.
2, the principle of wireless charging is through near-field induction, byThe wireless charging device conducts the energy to the charging terminal device, and the terminal device converts the received energy into electrical energy and stores it in the battery of the device. The principle of energy conduction is inductive coupling, which can ensure that there is no exposed conductive interface, which can not only save the messy transmission line between the equipment, but also be safer for electronic devices such as electric toothbrushes that are often in contact with conductive media such as liquids.
3, the principle of wireless charging technology is electromagnetic induction, magnetic field resonance, radio wave and so on. Electromagnetic induction type primary coil a certain frequency of alternating current, through electromagnetic induction in the secondary coil to produce a certain currentTo transfer energy from the transmitting end to the receiving end.
4, generally about 0.9-2 meters high-power wireless charging transmission distance up to 5 meters wireless charging technology can be divided into low-power wireless charging and high-power wireless charging two ways. Low-power wireless charging often uses electromagnetic induction, such as the Qi method of charging mobile phones, but ZTE's electric vehicle wireless charging method uses induction.
How to wireless charging car wireless charging How to use car wireless chargingThe method is: the car wireless charge is fixed in the appropriate position of the cab; Connect one end of the USB data cable of the wireless charger to the car cigarette port and the other end to the wireless charger; After fixing the position of the wireless charger, make sure that it is stable and will not slide, put the phone on and charge it.
Fixed wireless charger. The owner needs to buy a suitable wireless charger equipment, and then fix the wireless charger on the vehicle, and the fixed position should be convenient for the owner to take. Connect the cigarette lighter. One end of the USB data cable of the wireless charging device is connected to the wireless charger, and the other end is connected to the car cigarette lighter interface. Put it in your phone. Put the phone in noneIn the cable charger, the phone will start charging.
Fixed position: First, fix the car wireless charger in the appropriate position in the cab. You can place the charger in the center console, under the front seat, or on the edge of the windshield. Make sure the charger does not interfere with driving and does not slide or move. Connect the data cable: Connect one end of the USB data cable of the wireless charger to the car cigarette outlet and the other end to the wireless charger. Make sure the connection is secure and does not come loose or break.
Car wireless charging as long as the mobile phone supports wireless charging function can be charged, if the mobile phone does not supportYou need to connect a wireless charging patch on your phone. At present, the car charger basically uses the QI protocol (wireless charging standard), and the mobile phone and the car charger that meet this protocol can be matched for charging. So as long as the transmitter and receiver are QI certified, they can basically be charged.
Wireless charging can be divided into low-power wireless charging and high-power wireless charging two ways, low-power wireless charging often uses electromagnetic induction, such as mobile phone charging. High-power wireless charging often uses magnetic resonance, and the power supply device (charger) transmits energy to the electrical device, which uses the received energy to charge the batteryElectricity, and at the same time for its own operation.
At present, the wireless charging method mainly includes three types of automotive magnetic wireless charging : electromagnetic induction type, magnetic field resonance type, radio wave type.
Electric vehicle wireless charging technology is mainly the use of automotive magnetic wireless charging mutual induction in the law of electromagnetic induction. It is also similar to a transformer, which inputs from the primary coil and then generates an induced current on the secondary coil. It mainly relies on the energy transmission between electricity and electricity, converts electricity into magnetism, and then induces electricity. Wireless chargingElectricity is simply to charge electrical equipment through electromagnetic fields or electromagnetic waves without being connected by physical wires.
Wireless charging technology is derived from radio energy transmission technology, which can be divided into two ways of low-power wireless charging and high-power wireless charging. Low-power wireless charging often uses electromagnetic induction, such as the Qi method of charging mobile phones, but ZTE's electric vehicle wireless charging method uses induction.
Convenient Car magnetic wireless charging : no need to connect with a wire when charging, as long as it is placed near the charger. technologyOn the other hand, a charger can power multiple electrical devices, and in the case of multiple electrical devices, it can save multiple chargers, do not occupy multiple power sockets, and there is no trouble of multiple wires winding each other.