1, second, wireless chargingThe power is low and the cost is high. The current passenger car wireless charging power is up to 11kW, the efficiency is lower than wired charging, the equipment cost is more significant, a 3kW wireless charging system price of more than 10,000, and the same efficiency of AC slow charging pile only more than 1,000. The high cost and low efficiency make the popularization of wireless charging technology face serious challenges. Moreover, the electromagnetic wave radiation problem caused by wireless charging cannot be ignored.
2, on the one hand, it can reduce the construction cost of charging piles and charging stations, on the other hand, it can hide the charging power and transformer under the ground, so that the charging of the car becomes more convenient and fast. Orders,Before the world has a number of companies began to research in this field, including Wan 'an Technology, ZTE and many other companies.
3, a major challenge in the development of electric vehicles in China is battery life, and wireless charging technology may become a solution. China should accelerate the development of wireless charging technology, because it has many advantages such as flexible layout, user convenience, and safe charging, which is expected to alleviate the problem of charging pile construction. At present, this technology has gone out of the laboratory and entered the stage of demonstration development.
4, wireless charging, on the surface seems to only solve the "lazy" problem, eliminating the need to pick up the charging gun and insert the charging portThe process of; However, in fact, the problems solved by wireless charging are not limited to the second time, through wireless charging, the charging specification and interface can be completely unified, compared with the wired charging layout to save space, can solve many charging pile safety problems, and can provide completely unmanned operation for autonomous driving travel business.
5, Of course it can! Don't talk about the future. It's already here. The electric cars produced by BMW can already be charged wirelessly. As soon as the driver drives over the wireless charger, the system automatically charges the car. A domestic electric vehicle company is also studying wireless charging technology, at presentIt has low power standby mode and remote wake function, and high voltage tolerance of ±58V. In addition, it supports a flexible data rate of 5Mbps CAN FD, ensuring high speed and accuracy of data transmission.
Electric vehicle wireless charging is mainly used in two ways: one is magnetic induction wireless charging, the other is magnetic resonance wireless charging. The way electromagnetic waves are used in low-power places is not possible, let alone in the field of car charging. Whether it's magnetic induction orIs magnetic resonance, the final transfer of energy is the use of the space magnetic field, and because at least to transfer kW level above the energy, the energy level is large, then the frequency of the space magnetic field is correspondingly low.
There are two main ways to charge electric vehicles. One is the principle of electromagnetic induction, yes, that is, the electromagnetic induction of junior high school physics, the principle is very simple, but rely on this principle for wireless charging, to achieve it is a matter of recent years, mobile phones such as lumia 920 in 2012 to formally introduce this technology to the mobile phone industry.
Electric vehicle wireless charging technology is buried under the groundThe power supply guide transmits electric energy in the form of high-frequency alternating magnetic field to the electric energy picking mechanism at the receiving end of the vehicle running in a certain range from the ground up, and then supplies power to the vehicle energy storage equipment. When charging begins, the power transmitter PTx generates an alternating current through its coils, which creates an alternating magnetic field according to Faraday's Law.
Nuclear magnetic resonance technology is the scientific and technological innovation force behind wireless charging of electric vehicles, which cleverly uses magnetic field changes to achieve wireless transmission of energy. In a wireless charging system, a coil serves as the baseThe seat assembly is installed and the other is cleverly integrated into the vehicle structure.
1, BAIC wireless charging car: wireless charging On March 30, at the Guangzhou International New energy Vehicle charging pile Expo, we saw a wireless charging pile device and the matching BAIC EV200 model. Later, the reporter learned that the exhibitor of this wireless charging pile equipment is a company named Zhonghui Chuangzhi wireless power supply Technology Co., LTD. (hereinafter referred to as Zhonghui Chuangzhi)Enterprise.
2, BeiQI ev200 mobile phone wireless charging in the storage box. The mobile phone wireless charging device of BAIC EV200 uses electromagnetic induction to transfer energy for charging, and charges with release to get rid of messy wiring harness. When the phone is placed in the storage box, the system will automatically detect the phone's power level, start charging, and automatically stop charging after it is full. 3, summarize the answers to several questions about EV200: First of all, EV200 this A0-size electric vehicle costs less than 140,000, compared with BYD e6 and Denza and other models cheaper than half. Secondly, the temperature is right when the season is fullThere is no problem with electricity driving 200 kilometers, and electrical equipment can be fully opened to ensure that it is more than 150 kilometers.
4, the most powerful vehicle: BAIC New energy EV200 life: BAIC EV200 is equipped with high-performance lightweight permanent magnet synchronous motor independently developed by BAIC, the maximum torque is 102/180Nm, 0-50km/h, the acceleration time is 3 seconds, and the maximum speed is 125km/h. The official said that the new car can achieve a driving range of more than 200km under the current comprehensive working conditions. At a constant speed of 60 km, the maximum endurance can exceed 240 km.
1. Saic Anyue is currently the largest car company operating charging piles. Byd, as a car company, has also built charging piles. Guodian Nanrui is a company under the State Grid, mainly engaged in intelligent electrical equipment research and development and engineering service contracting. Aoxun is a leading enterprise committed to the development and production of DC operating power supplies.
2, in the selection of electric vehicle charging pile, the following three brands are highly recommended: Punord, Nanrui and Putian.PRTDT focuses on the manufacturing of new energy vehicle charging equipment. As a well-known private charging service provider and private pile sharing platform in China, its products are sold on JD.com, Tmall and other platforms. Consumers generally favor 7KW wall-mounted charging pile, Punode is known for its high-quality product quality and excellent reputation.
3, electric vehicle charging pile good have Punord, Nanrui, Putian and so on. PRTDT PRTDT brand product quality is very good, reputation is super good. Focus on new energy vehicle charging equipment manufacturing, domestic large private charging service providers and private pile sharing platform business. On Jingdong and Tmall and other platforms, Punode charging piles are sold. The most purchased by consumers is the 7KW wall-mounted charging pile.