New energy vehicle charging system inspection and disassembly training methods and steps?

It is recommended to go to a professional school to study, find a school with practical training equipment, and it is also possible to learn new energy system inspection in a short period of time.

Step 1: After powering off the pure electric vehicle, open the charging port cover, and the charging indicator on the motor tachometer will be lit at this time. In this case, the vehicle will not drive even when it hits "ON" gear.

The charging indicator in the motor tachometer remains on during charging and will only turn off after unplugging the charging plug and closing the charging door panel.

Step 2: Connect the charging plug to the charging socket on the vehicle.

Step 3: Connect the other end of the charging plug with the charging socket on the charging pile, and after swiping the card, the on-board charger will start charging the power battery pack. Or plug the household plug into an outlet at 220 V 16 A for charging.

Step 4: To charge a very low power battery pack to a full state, it generally takes 7 hours to use 220 V AC. The length of the charging time also depends on the state of charge (SOC) of the power battery pack, with a shorter charging time when the state of charge is higher and a longer charging time when the state of charge is low.

To check whether the power battery pack is fully charged during charging, simply turn the key to the "ACC" or "ON" gear to read it out from the dashboard.

When the pointer indicates 100%, it indicates that the power battery pack is fully charged. When the pointer does not indicate that it is near 100%, it means that the power battery pack has not been fully charged.

Precautions. Precautions for charging operation.

Due to the characteristics of the power battery and the detection accuracy, sometimes when the power battery pack is charged to a full state, the pointer of the SOC meter is not indicated at 100%, and the range of this indication may be 98%-100%. Therefore, it can be considered that when the pointer indication of the SOC meter is above 98% (including 98%), the power battery pack has been fully charged.

After unplugging the charging connector after charging, if you do not check the charging status of the SOC meter in time, but check it after several hours or longer, then due to the characteristics of the power battery, the SOC meter pointer may indicate below 98%, which does not mean that the power battery pack has failed.

The available energy of the power battery pack will gradually decay with the extension of service life. If the power battery pack has been used for a long time, the SOC meter pointer will not indicate around 100% when fully charged.

During the charging process of the power battery pack, the battery management system will automatically control the charging current, and when the power battery pack is charged to a full state, the battery management system will automatically terminate the charging of the power battery pack.

When the ambient temperature is too low, the battery management system will automatically heat the battery pack after plugging in the charging connector, and then charge the battery pack when the temperature is appropriate.

Maintenance-free battery: observe the color measurement value of the battery display light, and pay attention not to lack the battery liquid for the battery with distilled water. When replacing, remove the negative electrode of the battery first.

Depending on the car manufacturer, the charging method is also different.

Some new energy vehicles need professional charging piles to charge. Some don't. Household electricity can be charged. It's just a little slower.

Installing a charging pile, it is recommended to slow charging pile, which can complete the complete discharge cycle of the entire battery, which is beneficial to the battery life.

Fast charging is generally more than 20kw, and it can make up for 20-30 kWh of electricity in an hour, but direct current particularly hurts the battery, fast is fast, and it is not recommended as a long-term charging method, for the reasons above.

Generally, the household slow charge is 7-11kw, and it is full of sleep time at night, and the alternating current is beneficial to the battery efficiency.

The sockets for fast charging and slow charging are different, so it should be easy to identify.

The charging of new energy vehicles includes home charging and charging pile charging.

New energy vehicle discharge.

1. Correctly grasp the charging time.

Under normal circumstances, the battery charging time is about ten hours, and overcharging should be avoided. When preparing to travel, it is necessary to arrange charging on the way in advance to avoid insufficient power during driving, which will cause the battery to be over-discharged and seriously shorten the battery life.

2. Protect the mobile charger and try to avoid the charger bumps and vibrations.

In order to reduce costs, the current mobile chargers basically do not have a high vibration resistance design, many chargers after vibration, the potentiometer inside will drift, resulting in the entire parameter drift, resulting in abnormal charging. So, if you must use a mobile charger, try to wrap it in plastic foam.

In addition, the ventilation of the charger should be ensured when charging, otherwise, it will not only affect the life of the charger, but also may cause thermal drift and affect the charging state, which will cause damage to the battery.

3. It is strictly forbidden to store the battery in the state of power loss.

Because the battery is stored in a state of power loss, it is easy to sulfate, and the lead sulfate crystals adhere to the plates, which will block the ion channel, resulting in insufficient charging and a decrease in battery capacity. The longer the battery is idle, the more damaged the battery will be. Therefore, when the battery is not in use, it should be replenished once a month, so as to better maintain the health of the battery.

4. Preheat the battery before going out.

In winter, the electric car may still have 70% electricity the day before, but when I turn it on again overnight, I find that there is a "leakage"!

In fact, this is not "leakage", but "low temperature". In the process of driving the electric vehicle, the battery is in a state of continuous discharge, and the battery will heat up when discharged, so the battery itself is relatively hot, and the battery voltage is relatively high, so it is seen that there is still more power left in the electric vehicle.

However, after being parked overnight on a low winter night, the battery has already cooled down and the voltage drops, and then the BMS will automatically adjust the displayed power and mileage, which is the so-called "leakage".

There are two charging methods for new energy vehicles, one is to charge with the help of public charging piles, and the other is to use their own charging devices for charging, which is specified below.

1. Use public charging piles for charging

As of August 2019, with the increasing number of brands and numbers of new energy vehicles in society, a large number of public charging piles for new energy vehicles have also been set up. When charging with a public charging pile, pay attention to distinguishing between fast charging and slow charging. Generally speaking, fast charging can be used when charging with public charging piles, and the vehicle can be fully charged in 1-2 hours without delaying the normal driving of the car.

It is relatively fast to charge when using a public charging pile, but it needs to be charged in a special charging area, which is not very convenient in places where there are no public charging piles.

2. Use a home charging device for charging

Charging with a home charger is safer and less expensive. However, the charging speed is relatively slow, and it generally takes 8-10 hours to charge a single charge.

Matters needing attention when charging new energy vehicles:

1. When charging new energy vehicles, the charger and socket must be plugged in tightly to ensure the safety of electricity.

2. Don't charge it when the battery of the new energy vehicle is completely empty, which will not only damage the battery but also cause unnecessary trouble.

cognition of the overall layout of each system of the whole vehicle;

cognition of the overall structure of the whole vehicle frame and body covers;

Layout, cognition, detection, diagnosis and maintenance of low-voltage electrical system of the whole vehicle;

layout, cognition, testing, diagnosis and maintenance of chassis and drive motor systems;

The layout, cognition, detection, diagnosis and maintenance of charging piles are fully analyzed for the whole vehicle;

Layout, cognition, detection, diagnosis and maintenance of vehicle steering system;

arrangement, cognition, detection, diagnosis and maintenance of vehicle systems;

New energy vehicle teaching model equipment.

1. First of all, confirm the goodness of protective clothing, insulated shoes, safety helmets, insulating gloves, etc.;

2. Warning. Whether the sign is placed or not. For example, the warning cordon, the safety sign, the high-voltage danger sign, etc.;

3. Special tools for high-voltage insulation. Confirm that the tool is well insulated;

4. Disconnect the safety plug of the power battery;

5. Release the remaining high-voltage electricity inside the maintenance system. Confirm that there is no high voltage in the system being repaired (here it is pointed out that it is not the electricity in the power battery);

6. Carry out relevant maintenance operations.

The correct steps should be followed, first of all, wear anti-electric gloves, and the tools used should be the kind of anti-electric holster to avoid safety accidents.

The automotive industry continues to develop and innovate, and now there are new energy vehicles, which can effectively reduce the pollution of exhaust gas to the environment, make the air fresher, and ensure everyone's health. New energy vehicles need to be charged, so now everyone is right. The problem of car charging is more concerned, most people will often drive on business trips because of work, and everyone will charge the car when the car is out of power, but if this is a very important thing for everyone, you need to leave the car for a period of time, and some car owners are afraid that there will be some failures when charging the car during this time.

So some car owners asked what problems should be paid attention to if they need to leave in the process of charging new energy vehicles?

Anyone who has bought a new energy vehicle knows that there are two ways to charge a car, one is charging at the charging pile, and the other is portable charging. Charging pile charging is now the most common method, and portable charging is to carry a charging cable in the car at any time, which can be connected to your own socket for charging, just like your mobile phone, which can be charged anytime and anywhere. At this time, if you need to leave, you must carefully check whether the power plug is in good contact with the socket to see if the voltage and current are abnormal, if there is an abnormality, you must unplug the plug in time, otherwise it will affect the battery life of the car.

Second, we all know that the original charger must be used to ensure the life of the battery for mobile phone charging, but the same is true for new energy vehicles. If you use the charging pile for charging, you must check whether the charging plug matches the model of your car before leaving, to ensure that the contact between the car and the plug is good, if the plug does not match the model of the car, it will reduce the life of the battery for a long time.

Third, when charging the car, be sure to check the charging condition of the car regularly. New energy vehicles are charging, what places should be checked before leaving? Insider:

These 3 places! If you are really afraid that there will be some breakdowns in the car during the time you are away, the best thing to do at this time is to stop charging and ensure safety. And be sure to use the correct method of stopping charging.

If the abnormal method is used, the battery will be short-circuited, which will have a great impact on the car's battery and shorten the service life of the battery.

There are a lot of people who leave when they charge their cars because they feel that it is too wasteful to wait here for the car to be charged, and they don't care about the car while charging, and they will unplug the charging head of the car when they feel that there is enough time. Here I would like to remind you to check the charging of the car regularly, otherwise it is likely that due to some short circuits or model mismatch, it will have a great impact on the battery of the car, and the battery will be scrapped directly in serious cases.

Therefore, when charging new energy vehicles, we must pay special attention to the above 3 points, and don't feel that there is no problem with leaving for a period of time. There are so many things in the world that you can't predict that just a minute after you leave, the plug of your car will burn out, and not only will the car not be able to charge, but it may also cause an accident.

It should be to see if the socket of the car is completely unplugged.

Check that the plug of the power supply is plugged in properly and that the car is charging.

You should check if the socket is unplugged, as well as the condition of the wheels.

It is necessary to check whether the plug has been unplugged, and the wheels should also be checked to prevent accidents.

Be sure to check some parts near the car's engine, so that the phone bill is good for safety.

The first is whether the charging column is closed or not, and there is also the charging port of your car.

Look at the work of the contact port is not very normal, and the condition of the tire should also be seen.