1, let's talk about dynamic wireless charging, dynamic wireless charging in popular terms is to go and charge, which can completely solve the electric vehicleThe battery life problem, coupled with the instant charging, there is no charging time concerns. However, static wireless charging also has a big shortcoming, that is, the cost, in order to achieve dynamic wireless charging not only has higher requirements for electric vehicles, but also the road has to be re-paved.
2, compared with the traditional charging method, the wireless charging system can indeed greatly improve the convenience of charging, so that the stop is charged, and the wireless charging device has lower space demand. In addition, relying on magnetic resonance wireless charging, it can theoretically be charged while walking, and even is expected to solve the range anxiety of pure electric vehicles.
3,As for the electromagnetic wireless charging scheme, aluminum can also be used to replace copper as raw materials to a certain extent, thereby reducing manufacturing costs.
2. Wireless charging technology was invented by genius scientist Nikola Tesla. As early as 1890, physicist and electrical engineer Nikola Tesla experimented with wireless power transmission. The International System of Units for magnetic induction is also named after him.
3, since Google launched its flagship smartphone LG E960 (Nexus 4) in 2012Designed and manufactured by LG Electronics), mobile phone wireless charging has also been promoted to the public's vision. The phone is gently placed on the charging hemisphere, and the phone can be charged without doing any operation. 4. LorneWhitehead, a professor in the physics department at the University of British Columbia, led his own development team to develop wireless charging technology for electric vehicles. The difficulty in developing wireless charging technology for electric vehicles is that the high frequency and high intensity of the current can cause harm to nearby people. Whitehead has long believed that energy can be transferred efficiently between magnets.
5, mobile phone wireless charging is the first invention in Finland in 2012, and there was a similar design before, until the Nokia 920 was launched in 2012, is the true sense of wireless charging mobile phones.
6, this has to start from the wireless charging technology itself. Wireless charging, which originated from Michael Faraday's electromagnetic induction and was invented by Nicholas Tesla, has not really landed until nearly 10 years ago. At present, there are three main ways: electromagnetic induction, magnetic resonance, radio wave power wireless charging ; But where the radio wave isBy converting electromagnetic waves into electrical energy, the balance between power and safety is tricky, and there are fewer applications at present, let alone here.
The logic behind the wireless charging technology applied by Germany's WIFERION, which Tesla acquired, in the modified Model 3 is electromagnetic induction wireless charging. Currently used for modificationThe Tesla Model 3 can achieve a maximum of 12KW wireless charging power, the fastest one hour to replenish 80 kilometers, full may take about 6 hours.
Compared with the traditional charging method, the wireless charging system can indeed greatly improve the convenience of charging, so that it is stopped and charged, and the wireless charging device has lower space demand. In addition, relying on magnetic resonance wireless charging, it can theoretically be charged while walking, and even is expected to solve the range anxiety of pure electric vehicles.
The Ministry of Industry and Information Technology recently solicited opinions from the community, the main content is to regulate the standards for wireless charging of electric vehiclesThe current, which transfers the point energy from the originating end to the receiving end, begins to power the phone from the charging seat. Magnetic resonance.
The basic principle of wireless charging is to convert the current into a magnetic field, which is transmitted through the air and then converted into a current to be transmitted to the intelligent terminal. 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.
Wireless charging system mainly adopts the principle of electromagnetic induction. Wireless chargingElectrical appliances refer to the charger that is connected to the terminal device that needs to be charged without the traditional charging power cord. Using the latest wireless charging technology, the inductive coupling technology will become the bridge connecting the charging base station and the device by using the magnetic field generated between the coils to transmit electric energy magically.
Electromagnetic induction: The fundamental principle is to use the principle of electromagnetic induction, similar to a transformer, the primary coil of a certain frequency of alternating current, through electromagnetic induction in the secondary coil to produce a certain current, thereby transferring the energy from the transmission end to the receiving end. The conversion efficiency is high, the cost is cheap, but the transmission distance is short, and it is easy to be placed in the shadowBRRR.
Using the principle of electromagnetic induction charging equipment, its principle is similar to the transformer, through the transmitter and receiver end set coil, transmitter coil under the action of power to send electromagnetic signals, the receiving end coil receives electromagnetic signals and convert electromagnetic signals into current, so as to achieve the purpose of wireless charging.
If the vivo mobile phone is used, wireless charging is also known as inductive charging or non-contact inductive charging, based on the principle of electromagnetic induction, the device that needs to be charged can be charged by contacting the wireless charger after being energized.
[Pacific Automotive network] New energy vehicle battery charging temperature can not exceed 35°C, under normal circumstances, in the 15°C to 35°C environment, the battery charging and discharging capacity at a normal level. But when the ambient temperature is below 15°C, its power storage will be reduced to 70% to 80% of the original. If the temperature drops below minus 10°C, the storage capacity is even lower.
New energy vehicle battery charging temperature can not exceed 40 degrees Celsius. There are four ways to charge: slow charge and fast chargeCharge, replace power battery and wireless charging. Slow charging is suitable for car chargers and home wall-mounted charging piles, the current and power are relatively small, and it takes 6-8 hours to fully charge.
[Pacific Automotive network] The battery of new energy vehicles is suitable for working at 0-40°C. Because the appropriate temperature of the cell is 0-40°C, the temperature is too high and too low will affect the activity of the cell and cause irreversible damage, and even affect the life of the cell. Electric vehicle batteries work at a suitable temperature of 0-40°C.
In summary, the temperature of the rechargeable battery of new energy vehicles does not exceed 40 degrees is positiveAt the same time, it is necessary to pay attention to the safety of the charger and power off in time during the charging process to ensure the safety of charging. I hope the above content can be helpful to you.
The normal operating temperature of new energy vehicle batteries is usually maintained between 0-40°C. This range ensures optimal battery performance and extends its service life. The following is some detailed analysis of the temperature of the new energy vehicle battery: The appropriate temperature of the battery cell, as the core part of the battery, its appropriate operating temperature is also 0-40°C.