1. Lead-acid batteries:
a. Lead-acid batteries with added water are common non-polluting batteries. However, if water is added, a drainage device must be installed at the charging station; to effectively vent harmful gases during the charging process. Currently less used.
b. Maintenance-free lead acid batteries. No pollution, no need to add water to maintain the battery. The general charging current is 0.2C to 0.3C, which requires a special charger, and the charging time is 10-12 hours.
2. Nickel-chromium battery:
The battery has low energy density, has a memory effect, and the recycling process pollutes the environment. It is generally only used in special applications. Large-scale AGVs.
3. Lithium iron phosphate battery
Charging and discharging rate is commonly used. 1C discharge and 2C charge meet the requirements ofe fast charging. Lead-acid batteries, and the same capacity can be lighter and smaller. No pollution, the size can be customized to meet different car size needs. For fast charging applications, lithium iron phosphate batteries are typically used.
4. Ternary lithium battery
Conventional ternary lithium battery supports 0.5C charge and 0.5C discharge. The energy density is higher than that of lithium iron phosphate battery , but the thermal stability thereof is high. The battery is poor, does not support charging and discharging. For online charging applications that do not require fast charging, this ternary battery is generally used.
How to choose the power supply of AGV car?
Two operating modes of AGV cars.
1. AGV guided by electromagnetic induction
On the ground, the wires are buried along a predefined conduit path, a high-frequency current passes through them, and an electromagnetic field is generated around them. the sons. The AGV lithium battery follows the path of the wire by sensing the magnetic field. (There are two electromagnetic sensors installed symmetrically on the left and right on the AGV. The difference in the intensity of the electromagnetic signals they receive can reflect the degree to which the AGV deviates from the trajectory.)
2. Laser-guided AGV
A rotating laser scanner is installed on the AGV to scan the laser positioning mark (installed on the wall or pillar along the raceway, with a highly reflective reflector), receives the laser beam. reflected by the positioning mark, and the on-board computer calculates the current position and movement direction of the vehicle are compared with the built-in digital map to correct the orientation.
3. PA-guided AGVr vision
The AGV is equipped with visual detection equipment (CCD camera or visual sensor), and a database of images of the environment around the predetermined driving trajectory of the 'AGV is defined in the on-board computer. During the driving process of the AGV lithium battery, the camera dynamically obtains image information from the vehicle environment and compares it with the image database to determine the current location and make a decision on the next movement.
What is the difference between model 3 ternary lithium battery and lithium iron phosphate battery?
1: Nickel cadmium battery for AGV car
The internal resistance is large and can be discharged with large current, the voltage change during discharge is small Compared with other types of batteries, nickel-cadmium batteries can withstand overcharge or discharge and aresimple and convenient to use.The discharge voltage varies somewhat depending on the discharge current. Generally speaking, it is about 1.2 V. The end-of-discharge voltage of the nickel-cadmium battery is 1.0 V/CELL. Actual operating temperature range is -20 degrees to 60 degrees. In this range, you can repeat charging and discharging more than 500 times.
2: AGV car nickel-metal hydride battery
The energy of nickel-metal hydride battery is twice that of nickel-cadmium battery. It can be charged quickly in an hour with one. special charger. The self-discharge characteristics are better than nickel-cadmium batteries, can be kept longer after charging, and can be repeatedly charged and discharged more than 500 times
3: AGV. car lithium battery
It has high energy density. Compared with high c nickel-cadmium batteriesapacity, the volume energy is 1.5 times, the energy density is 2 times, high voltage, the average operating voltage is 3.6V, 3 times that of nickel-cadmium batteries and nickel-metal hydride batteries, and the working voltage is flat. It also has high capacity, wide operating temperature range from -20 degrees to 60 degrees and long charge and discharge life. After 500 discharges, its capacity is still at least 70%. Because lithium batteries have the characteristics of high energy density, high voltage and stable operation.
4: AGV Car Lead Acid Battery
Lead acid battery is the most widely used battery. It uses sponge lead as the negative electrode and lead dioxide as the positive electrode. Use These two substances are called active substances and an aqueous solution of sulfuric acid is used as an electrolyte. They jointly participate in the electrochemical reaction of the battery. Lead-acid batteries have good reversibility, stable voltage characteristics, long service life, wide application range, abundant raw materials, renewable use and low cost. It is mainly used in various fields of national economy such as transportation, mining, ports, national defense, information technology, scientific research, etc. It is an indispensable product in social production, commercial activities and human life.
(Data source: AGV car Tianjin Shenneng, reprinting is prohibited)
Basically, the battery of the AGV car has these conditions. It's better to compare yourself.
Pacific Automotive Network's ternary lithium battery refers to the positive electrode material composed of three elements: nickel salt, cobalt salt, manganese/aluminum saltlithium minate. It has high energy density, good safety and stability. and high support Excellent electrochemical properties such as discharge rate, plus the cost advantage of moderate price; lithium iron phosphate battery Lithium iron phosphate battery refers to a lithium ion battery using lithium iron phosphate as the cathode material. the battery is inserted, it can be charged and used at any time, no need to discharge and then recharge.
Ternary lithium battery A ternary lithium battery refers to a lithium salt lithium battery in which the positive electrode material is composed of three elements: nickel salt, cobalt salt, manganese salt/lithium aluminate, the material of the negative electrode is graphite, and the electrolyte is mainly lithium hexafluorophosphate battery. It has excellent electrochemical properties such as high densityHigh energy, good safety and stability, supports high rate discharge, and has the advantage of moderate cost. It has been widely used in the fields of small and medium-sized lithium batteries such as consumer digital batteries. electronics, industrial equipment and medical instruments. , and in the field of lithium batteries such as intelligent robots, AGV logistics vehicles, drones and new energy vehicles, there are also digital categories (smartphones, tablets, laptops, electric cars, MP3). /MP
4. Headphones, power banks for mobile phones, model airplanes, mobile chargers, etc. ) presents strong development potential.
Lithium iron phosphate battery Lithium iron phosphate battery Lithium iron phosphate battery refers to a lithium-ion battery using lithium iron phosphateas a positive electrode material. The negative electrode is also made of graphite. The electrolyte is also primarily lithium hexafluorophosphate. Regardless of the battery condition, it can be charged and used at any time. There is no need to unload and then load it. This is the safest lithium battery available today. If damaged internally or externally, the battery will not burn or explode and provides the best safety. The battery does not contain heavy metals or rare metals (nickel-metal hydride batteries require rare batteries). metals), and is non-toxic (SGS certified), pollution-free, compliant with European RoHS regulations and with an absolute green battery certificate.
Data comparison between ternary lithium batteries and lithium iron phosphate batteries. In the field of power batteries, lithium iron batteries pphosphate and ternary battery technologies are in the lead. In the two major technical fields, the company's core technical indicators are at the top level in the industry. The energy density of lithium iron phosphate batteries is much lower than that of ternary lithium batteries, but its safety is generally considered better than that of ternary lithium batteries. #不 draggingchallenge# Due to the different performance characteristics and different application scenarios of lithium iron phosphate batteries and ternary batteries, the two main technical routes will be supported at the same time. Among them, lithium iron phosphate batteries have the advantages of high safety and. long life expectancy. It can meet the field of commercial vehicles with higher safety requirements and higher operating frequency. In the field of carsSpecial tures with higher space and weight requirements, the high energy density ternary battery can achieve longer cruising range and be more practical to meet the needs of individual consumers. needs.
1. Although lithium iron phosphate batteries are resistant to high temperatures, ternary lithium batteries have better low temperature resistance and are the main technical route for manufacturing lithium batteries at low temperatures at minus 20°C. Lithium batteries can release 70.14% of their capacity, while lithium iron phosphate batteries can only release 54.94% of their capacity. Due to the low temperature conditions, the discharge platform of the ternary lithium battery is much higher than the voltage platform of the lithium iron phosphate battery and starts. faster.
(Images/Text/Photos: Questionsand responses from Pacific Automotive Network Calling the Beast)