The choice of the AGV battery has a greater impact on the overall AGV car. It will directly affect the AGV's continuous navigation capability and the stability of the agv trolley. The continuous duty cycle and charging time of the AGV trolley also directly determine the production efficiency of the AGV trolley. Reasonable and effective management and control of the battery can ensure the performance of the AGV car vehicle power battery is good, safe and stable, and can effectively extend the service life of the battery.
Big Data Technology in AGV Logistics System
In the past, domestically produced AGVs generally used nickel-cadmium batteries and lead-acid batteries, which are heavy, bulky, and contain heavy metals. Many AGV manufacturers now use the smallest, lightest weight, high and low temperature rate discharge performance, the longest life, the most environmentally friendly, the simplest maintenance of lithium batteries.
Compared with the same high-capacity nickel-cadmium battery, the AGV car lithium battery has 1.5 times the volumetric energy of the nickel-cadmium battery and twice the energy density of the nickel-cadmium battery. The average voltage of the lithium-ion battery of the AGV car is 3.6V, which is a nickel-cadmium battery and nickel-hydrogen. 3 times the battery. It has the characteristics of wide use temperature, long life of charge and discharge, and stable operation.
AGV lithium battery automatic charging system program:
The battery used in the AGV car is a 24V/60AH lithium iron phosphate battery, with a normal charging current of 20A, a fast charging of 100A, and a charging voltage of 28.8V. Charging method: automatic charging. The charging system should be composed of three parts: the lithium battery pack residual capacity (SOC) detecting device, that is, the hour meter, the automatic charger and the charging automatic docking interface.
1. Antime meter
An ampere meter is a meter that measures the SOC and voltage of a lithium battery pack. It should be mounted on an AGV trolley to display the SOC and voltage values of the battery pack in a timely manner. When the remaining capacity of the battery pack reaches 20% of the rated capacity or the battery pack voltage is lower than 20V, the alarm meter should send an alarm signal to inform the AGV car to monitor the car to be charged at the charging position; the signal form is dry contact signal or 485 communication. signal.
The intelligent charging device of AGV trolley adopts programmable controller as the main control unit, 7-inch color LCD touch screen as human-machine exchange platform; the main circuit adopts high-frequency switching power supply circuit, light weight, small size, high efficiency, stable and steady flow High precision and other features. The whole set of equipment is easy to operate, reliable in operation, complete in protection and high in automation. Provide 485 communication interface and dry contact signal (charging, standby, full and fault) to the background monitoring of AGV car, and exchange data and working status to the host computer in time.
1) AC input voltage: AC220V±10% /50Hz
2) DC output voltage: DC 0-30V
3) DC output current: DC 10-100A
4) Noise: ≤55dB (close the front and rear doors 1 meter)
5) Cooling method: air cooling
6) Dimensions: 900mm high × 600mm wide × 400mm thick
7) Weight: about 40kg
8) Installation method: ground
3, the interface
Battery charging interface: There are various specifications such as single pole, bipolar, three-level, 20A, 60A, 80A, 100A, 200A, etc., which can be used for charging lithium batteries, lead-acid batteries, nickel-hydrogen batteries, nickel-cadmium batteries, etc. It can also be used in the online charging system of AGV navigation transport vehicles. The products are widely used in charging systems in the fields of electric power, railway, communication, logistics automation, national defense, petrochemical, metallurgy, coal mine, etc., and can completely replace imported products.