With the gradual development of science and technology, we are increasingly demanding the degree of intelligent automation in the industrial production process.
Then in this issue, Let’s analyze the various charging methods of the AGV car together!
First, according to the charging time can be divided into random charging and full cycle charging
1 random charge
It means that the parking stations of the AGV can be charged at any time without any time limit. If there are more charging points, it can ensure that the loss of the AGV car during the working process can be replenished in time, so as to achieve shallow charging of the battery, prolong the service life of the car battery and reduce the required battery capacity.
2 full cycle charging
It means that the AGV car is required to be charged after the service is taken out of the service, and the charging is performed when the charge of the battery falls within the specified range.
Of course, there are currently charging modes that are combined in the above two ways.
Second, according to the charging area can be divided into online charging and offline charging
1 online charging
It means that the AGV car does not need to leave the working line and does not need to be charged for a specific time. It is only necessary to use the short time in the working process to perform the charging mode. Reasonable use of the fragmentation time of the AGV car does not take up its working time. This method is also an extension of random charging. Embed the charging station into the workflow of the AGV trolley to further improve the efficiency of the AGV trolley.
2 offline charging
It means that after the AGV car exits the service, it will enter the charging area or a special charging station for charging mode.
Third, according to the operation method classification into manual mode, battery replacement mode, automatic charging
When the power of the AGV car is insufficient, the ground control center will direct the AGV car to the designated charging area. The corresponding professional personnel manually complete the electrical connection between the AGV car and the charger to perform charging. After the charging is completed, the working state of the car is also manually restored.
The manual charging mode of the AGV car is very reliable and easy to implement and low in equipment cost. It is usually used in the standard work system where the degree of automation is not particularly high and the number of vehicles is small. In order to ensure the endurance of the AGV car, it is necessary to equip the battery with a large capacity. Therefore, continuous operation of the 24-hour AGV trolley cannot be achieved.
The replacement battery charging is when the power of the AGV car is insufficient, the corresponding professional personnel manually replace the battery pack, and the AGV car is put into use. The replaced battery will be used after charging. Its main features are simple, fast, and can achieve 24-hour continuous work of the AGV trolley throughout the day. However, it takes twice as many battery packs as it is costly and primitive. Usually used to respond to work timeliness is also very high requirements, but the above two methods are required to take care of, not only waste of manpower and automation will be reduced. Once the charge is lost, the AGV car will not work.
Automatic charging is the automatic reporting and request charging when the AGV car needs supplementary power. It is commanded by the ground control center and drives to the designated charging area. The charging connector of the vehicle and the charging system of the ground are automatically connected to implement charging. When the charging is completed, the AGV car will automatically leave the charging system and then drive to the work area for normal work. This type of AGV trolley is suitable for applications where the number of vehicles is small, the work cycle is long and the degree of automation is high.
Fourth, according to the electrical connection method of the charger can be divided into contact and wireless charging
Contact charging is a charging circuit that requires charging contacts and cables to connect the vehicle to the power supply system. The contact charging mode provides a large charging current for fast charging. This is also a way for everyone to choose more. However, this method cannot be applied to frequent random charging, and there is wear of the charging contacts, so regular replacement is required. Moreover, fire may occur during the charging process, so there will be a case for all. In addition, since the charging contact is an exposed component, it cannot work normally in a humid, low-temperature condensation, flammable or explosive environment.
Wireless charging refers to a non-contact charging device. It is not necessary to use a cable. It is only necessary to connect the vehicle to the power supply system, discard the charging contacts, and the electrical device and the charger can be exposed without conductive contacts.
The wireless charging technology electrically isolates the charging end from the energy storage system of the AGV car, and fundamentally eliminates the drawbacks caused by the in-line charging method. Therefore, it is more complete and more applicable.
The charging efficiency of the current AGV trolley wireless charging products is comparable to that of the contact charging system. Non-contact wear and high degree of intelligence make it ideal for online charging.