Wireless charging or becoming a paving stone for the development of electric vehicles

It is an indisputable fact that oil will eventually run out. Selecting new energy as the main means of transportation in the future is imminent. The reason why electric vehicles are still not developing rapidly is that, apart from the internal combustion engine, there is still a certain amount of development space. The more important thing is that the characteristics of electric vehicles (EVs) are inherently delayed. Once these problems are solved, it is bound to spread throughout the entire transportation industry. network.

Some problems that hinder the development of EV

Judging from the current situation, the problems that hinder EV development mainly come from two aspects.

First, security issues. Several accidents ignited by electric vehicles sounded a warning bell to people. No matter how the development of transportation means, in the final analysis, it is to serve people. Therefore, safety issues must be placed in the first place. As the saying goes, "it is not difficult to use money to solve problems." Security issues can also be called technical problems. Technology may not be able to use money. Even if it requires large sums of money for research and development, it also requires an exploration process.

Second, the charging problem.

1) Gas stations provide fast and convenient energy for diesel locomotives. Its main problem is fire prevention. Fire prevention is not used for cutting-edge technology and people's awareness of prevention can be realized. A full tank of 90L oil can be completed within 5 minutes. Even if you charge the EV every time you use fast charge, it will take at least tens of minutes. But fast charge is at the expense of the cycle life of the battery, because the battery generates electricity through the electrochemical reaction, the charge is a reverse chemical reaction, and the fast charge in the moment input high current into the battery, often fast charge will reduce the battery Reducing capacity, reducing the number of battery charge and discharge cycles. Then, normal charging can take up to several hours to complete.

2) The EV cannot be used during the charging process for several hours, and a dedicated charging station cannot satisfy the requirement for a large number of vehicles to be recharged at the same time.

3) The charging problem is accompanied by the problem of vehicle mileage. If the vehicle can be moved from point A to point B, there is no need to charge. Once traffic congestion occurs on the way or there are insufficient mileages due to other reasons, traffic will be lost due to the breakdown of the vehicle, and the endurance will not be effective.

4) In the form of battery replacement at the charging station, the EV or above problem cannot be perfectly solved. Because at the beginning of the design of the vehicle, it is necessary to consider safety as well as styling and practicality. If all manufacturers put the battery in the same easy-to-access place, then in the future, EVs may only be differentiated by license plates.

Our optimistic vision is that perhaps the EV security issue has already been completely resolved by vendors and has not yet been made public, so the latter will become the ultimate issue. It is convenience in the final analysis.

Wireless charging or convenient

As early as many years ago, manufacturers had researched this topic and had established industry standards. For example, wireless charging devices in the mobile phone industry use the “Qi” specification as a global standard. There are many ways in wireless charging such as magnetic resonance, magnetic induction, and electric field coupling, each of which has its own characteristics. Because the magnetic resonance method can achieve long-distance high-power energy transmission purposes, and the general car's minimum ground clearance is between 140mm and 170mm, the sports car is even lower, so it will be widely used by people. Regardless of which method will be used in the end, it will greatly enhance the convenience by eliminating the piles of cables.

Let Wireless Charging Technology Give Us More Strength

Since the development of EV has the problem of convenience, there are also possible ways to crack it. The remaining problem “rich money” can be solved. We may wish to boldly imagine several scenarios to place wireless charging devices.

First, parking lot on the ground. At present, the EV's cruising range is about 200km to 300km. It can basically meet the mileage from home to company or on the day of travel, and there is enough time to recharge at night.

Second, congested roads on the road. Every day here is a serious gambling point, or a junction or close to schools, large shopping malls, in short, traffic jams every day here, it is not difficult to judge, Beijing has a few daily sections that must be blocked. Setting up charging equipment on such a road section avoids the EV from starting and stopping, resulting in power consumption, which in turn makes it more abundant.

Third, the inter-provincial fast road. If the distance between two cities exceeds the EV life, vehicles may be anchored in the wild. The charging device is set on the express road according to the running speed, and the continuous charging can be realized during the running, just like the mobile phone is charged in the on state.