What are the charging methods for electric vehicles now?

There are four main charging methods for electric vehicles:

One is to use a portable charger that comes with the car, and electric vehicles will be equipped with a portable charger with the car, so that the owner can charge it through the home power supply, and the main feature is convenience. However, its slow charging speed is a bit maddening, and it can only be used as an alternative way to replenish power.

The second is home charging piles. When buying an electric car, it is generally given home charging piles with the car, and technicians will be arranged to install and debug at home, the charging time of this charging method is okay, and it will be different with the different brands and models of the vehicle, but the premise is that there is a parking space, and the property allows you to install home charging piles on the parking space.

The third way is public charging piles. The advantage of this charging method is that DC fast charging and AC slow charging can be selected according to the actual situation, and it is also the only place that supports DC fast charging, but the disadvantages are also obvious, the public charging pile is less built at this stage, it is not easy to find, and it is not easy to occupy after finding, and the charging cost is higher.

The fourth way to charge is to change the battery. This is also the last trick of electric vehicles, specially trained technicians, through fully automatic or semi-automatic technology, can replace the battery within 2-10 minutes, to achieve the supply of electric energy, so as to achieve the speed comparable to fuel vehicle refueling, but the shortcomings of this way are also obvious, can only be in a professional location, operated by professionals.

Qualcomm Halo wireless charging system.

Charging an electric vehicle battery does not have to be connected by a cable, mobile phones have already realized the wireless charging function, so what is impossible about charging an electric vehicle battery.

Wireless charging technology is actually based on the principle of electromagnetic induction, wireless transmission of electric energy within a certain space range.

It is understood that at present, a number of car companies and third-party technology companies have developed wireless charging technology. For example, the wireless charging system developed by Nissan for the Leaf and the Halo wireless charging system developed by Qualcomm are both relatively mature technologies.

Now there are two ways to charge electric vehicles, public charging and home charging. Charging at public charging piles (stations), these are generally DC fast charging, which is the fastest charging method, but it is a bit harmful to electric vehicle batteries, and the process of installing the national grid is more cumbersome.

In some parking lots, there are column-type column-type charging piles or wall-mounted charging piles, which are basically AC slow charging, and it is also the most used charging method at present.

Pure electric vehicles use electric motors instead of gasoline engines

Driven by an electric motor without the need for an automatic transmission. Compared with the automatic gearbox, the motor has simple structure, mature technology and reliable operation. Conventional combustion engines limit the speed of efficient torque generation to a narrow range.

This is why traditional internal combustion engine vehicles require a large and complex transmission mechanism; The electric motor can efficiently generate torque in a fairly wide range of speeds, and does not need a gear shift device during the driving of pure electric vehicles, which is convenient and easy to operate, and has low noise.

There are different approaches to the classification of EV charging devices. In general, it can be divided into on-board charging devices and off-board charging devices. According to the different ways of energy conversion when charging electric vehicle batteries, charging devices can be divided into contact type and induction type.

Electric vehicles are divided into slow charging, fast charging, battery swapping, wireless charging, mobile charging and other methods according to different charging methods.

There are 4 ways to charge electric vehicles, which are:

AC charging. DC charging.

Wireless charging. Mechanical charging.

But now AC and DC charging are commonly used.

A closer look at several ways to charge electric vehicles.

Wireless charging technology2. Take the lead in using battery swap technology in the field of public transportation, 3. PublicCharging pilesMost of them use DC charging technology, 4, and AC charging methods that can be used at home.

Pure electric vehicles.

It refers to a vehicle that is powered by on-board power supply and driven by a motor to drive the wheels and meets the requirements of road traffic and safety regulations. Due to its small environmental impact compared to conventional vehicles, its prospects are widely promising, but the current technology is not yet mature.

Pure electric vehicles, which are entirely powered by rechargeable batteries such as lead-acid batteries.

Nickel-cadmium batteries, nickel-metal hydride batteries, or lithium-ion batteries.

A car that provides a power source.

Although it has a long history of 186 years, it has been limited to a certain range of applications, and the market is small. The main reason is that due to various types of batteries, there are serious shortcomings such as high quality, short life, large size and weight, and long charging time.

Main structure. The components of an electric vehicle include: electric drive and control system, mechanical systems such as drive transmission, and working devices to complete established tasks. Electric drive and control systems are at the heart of electric vehicles and the biggest differentiator from internal combustion engine vehicles.

The electric drive and control system consists of a driving motor, a power supply and a speed control device for the motor. The rest of the equipment of an electric car is basically the same as that of an internal combustion engine vehicle.

Power supply. It provides electrical energy to the drive motor of an electric vehicle, which converts the electrical energy of the power supply into mechanical energy.

The most widely used power source is lead-acid batteries, but with the development of electric vehicle technology, lead-acid batteries are gradually replaced by other batteries due to low energy, slow charging speed and short life.

The power supply under development mainly includes sodium-sulfur batteries, nickel-cadmium batteries, lithium batteries, fuel cells, etc., and the application of these new power sources has opened up broad prospects for the development of electric vehicles.

Working device. The working device is specially set up by industrial electric vehicles to complete the operation requirements, such as the lifting device and mast of electric forklifts.

forks, etc. The lifting of the forks and the tilting of the mast are usually done by a hydraulic system driven by an electric motor.

1. Portable charging.

Portable charging refers to charging by using the portable charging cable that comes with the car to connect to a common household outlet. This is a very convenient way to charge, as long as you can find an outlet, you can charge it. But the speed of its charging is not complimentary.

Generally speaking, the voltage of an ordinary household socket is 220V, the current is 10A, and the power is theoretically, while in practical use, the charging power is generally only. A portable charging unit on the Chery EQ electric vehicle.

In other words, it takes nearly 40 hours to fully charge a BAIC New Energy EV200 pure electric vehicle (range 200km, battery capacity) and nearly 40 hours to fully charge a BYD E6 pure electric vehicle (range 300km, battery capacity 57kWh) using a portable charging device. This speed is simply unbearable, and can only be used as a supplement to other charging methods, so that users can recharge at any time.

2. Home charging.

Home charging piles are the most common type of charging piles. Generally, private users will come with a home charging pile when they buy an electric car. Of course, piles alone are not enough, there is also a parking space and the property agrees to install it.

The BMW i3 is equipped with the i wallbox Pro charging wallbox, the power is: In terms of charging speed, the charging speed is not the same because the specifications of the charging piles provided by each manufacturer are different. The BMW i3 is equipped with the i wallbox Pro charging wallbox, the power is:

Venucia Chenfeng has 2 types of home charging piles, the low-profile version is the one, and the high-configuration version is. DENZA also offers two types of home charging cabinets, one with 10 kW and one with 20 kW.

3. Public charging.

Although home charging piles are good, there are still many users who cannot install home charging piles because they do not have a fixed parking space or the property does not cooperate. For them, public charging stations are the only option. If you can't build a charging pile at home, you can only charge at a public charging pile.

Public charging piles are generally built, maintained and operated by power companies such as the State Grid and China Southern Power Grid. In the future, with the maturity of the electric vehicle industry, there will be a lot of private capital into this field. Public charging piles are generally divided into fast charging and slow charging, the former using direct current, and the latter using alternating current.

DC fast charging: Taking the common State Grid fast charging pile as an example, its output DC voltage is 380V, the current can reach 50A, and the output power can reach 19kW. However, in order to protect the battery, after the battery capacity reaches 80%, the charging current will slowly drop to about 10A.

Therefore, after the power is generally charged to 80% with fast charging, it should be changed to a slow charging pile to fully charge, which is more efficient. AC slow charging: Due to the advantages in cost and other aspects, the number of AC slow charging piles is large.

Although the charging speed of DC fast charging piles is faster, the number of DC fast charging piles in a charging station must be limited by the power load and the cost of building piles. In order to use limited resources to provide charging services for more people, some AC slow charging piles must be supplemented.

There are several ways to charge electric vehicles: small charging stations.

Small charging stations are one of the most important charging methods for electric vehicles, and charging piles are set up on the streetside, supermarkets, office buildings, parking lots, etc. The driver of the electric vehicle only needs to park the car at the designated position of the charging station, connect the wire to start charging, the billing method is generally swiping the card, the charging power is generally 5 10kw, and its typical charging time is: 1 2h of charge, 5 8h of full charge.

There are several ways to charge electric vehicles: fast charging.

DC electric vehicle charging station, commonly known as "fast charging", is a power supply device that is fixed outside the electric vehicle, connected to the AC power grid, and can provide DC power for the power battery of the off-board electric vehicle. The input voltage of the DC charging pile adopts three-phase four-wire AC380V 15%, the frequency is 50Hz, and the output is adjustable DC power, which directly charges the power battery of the electric vehicle. Since the DC charging pile adopts three-phase four-wire power supply, it can provide sufficient power, and the output voltage and current adjustment range is large, which can realize the requirements of fast charging.

At present, pure electric vehicles mainly rely on two methods: AC slow charging and DC fast charging.

The electric energy replenishment of pure electric vehicles can be divided into two modes, namely:Charging mode and battery swap mode

Charging modes can be divided into fast charging and slow chargingIn fact, it is to charge the battery in the traditional sense. Battery swapping, also known as mechanical charging, is the direct replacement of a charged power batteryto achieve the purpose of electric energy replenishment of electric vehicles.

It's all plug-in, but it's divided into fast charging and slow charging.

There are four main charging methods for electric vehicles:

One is to use a portable charger carried with the car, and electric vehicles will be equipped with a portable charger with the car, so that the owner can charge through the household power supply, and the second is the home charging pile. When buying an electric vehicle, a home charging pile will generally be given with the car, and technicians will be arranged to install and debug it at home.

The third way is public charging piles.

The fourth way to charge is to change the battery.

One of the common charging methods for new energy vehicles is to use household electricity to transfer. Go charge the car. However, this method tends to be slower, but the cost is lower. You can also choose to go to the charging pile and use the DC charger to charge the car

Now the main thing is direct charging, and there are some battery swaps, so now it's not that you have an absolute traditional charging method, so the current ones are these two.

The best charging method for pure electric vehicles:

1. Conventional charging is also slow charging: the traditional way of constant voltage and constant current is generally used to charge the car. The charging current is about 15A, if you take a 120A·h battery as an example, the charging should last at least 8 hours, and it can be fully charged the next morning after getting off work at night.

2. This charging method is a more common electric vehicle charging mode at present, because of the low cost and stable work, the charging power of the general civilian charging equipment is 5 10kw, and the three-phase four-wire system 380V power supply or one-way 220V power supply is adopted. The charging current is small, which is good for battery life, but the disadvantage is that the charging rate is slower;

3. Fast charging mode: Generally, the high charging current of 150 400A is used to charge the battery in a short time. Fast charging charging method, need better batteries and charging piles, not all electric vehicles can be fast charged, need to be fast charged according to the manufacturer's requirements;

4. The main purpose of fast charging is to fully charge the electric vehicle in a short time, and the charging power of this type of charging mode is generally greater than 30KW, and the three-phase four-wire system 380V power supply is adopted. Although the charging speed is accelerated, because in the process of fast charging, the heat of the battery increases sharply, and at the same time, the chemical reaction inside the battery is violently, so it will have a certain impact on the life of the battery, so that the later use cost of the electric vehicle will be greatly increased.

Electric vehicle. There are three main charging methods:

First, the use of portable chargers carried with the car, electric vehicles will be equipped with portable chargers, so that the owner can charge through the household power supply, the main feature is convenience. But its slow charging speed is a bit maddening, and it can only be used as an other way to replenish the battery.

Use. 2. Home charging piles.

When buying an electric vehicle, it is generally a home charging pile with the car, and technicians will be arranged to install and debug it.

Third, the public charging pile, the advantage of this charging method is that you can choose DC fast charging and AC slow charging according to the actual situation, and it is also the only place to support DC fast charging, but the disadvantages are also obvious, the public charging pile is less construction at this stage, it is not easy to find, it is not easy to occupy after finding, and the charging cost is higher.