1. Application Background
Lithium battery is a kind of battery made of lithium metal or lithium alloy as anode material and using non-aqueous electrolyte solution. It mainly relies on lithium ions moving between the positive and negative electrodes to work. With the development of new energy technology and technology, lithium batteries are more and more widely used due to their chargability and high energy density. The electrolyte inside the lithium ion battery is flammable liquid, and the electrode is combustible material. In the case of overcharge, short circuit, overheat, puncture or collision, the lithium battery will lose control of heat, which is easy to catch fire or even explode. According to incomplete statistics, there are dozens of serious fire accidents in the lithium battery industry every year, which are distributed in the production, transportation, application, recycling and other links of lithium ion battery. These fire incidents show the industry that it is urgent to solve the safety production problem of lithium battery, and the safety management in the production process, storage and application end becomes more critical.
2. Customer Demand
This project is lithium battery storage warehouse monitoring. When lithium battery is stored in the warehouse, short circuit will easily cause heat and fire. The process of lithium battery heating and fire is very fast, which makes it difficult for conventional smoke and temperature sensors to detect the problems in time. When the problems are found, they have caused great economic losses and even threatened the life safety of staff. Since the warehouse of this project is 154.8 meters long, 60 meters wide, and 2 meters high for stacking batteries, it covers a large area and has a wide monitoring range. Considering cost control, it is necessary to provide a rail robot fire monitoring system, so that problems can be found early in the abnormal temperature of lithium batteries and relevant responsible personnel can be notified in a timely manner.
This project adopts the orbital robot to carry infrared and visible light at the same time, and completes the temperature detection of the battery warehouse through the robot to set the cruise route. Infrared combined with visible light can better locate the high temperature area, convenient for staff inspection. At the same time, the number of equipment can be reduced and the cost can be reduced by installing the track robot. The biggest feature of this set of solutions is that the track robot is used for inspection, and all digitized. The front end uses infrared thermal camera, which is transmitted through Ethernet. The digital signal is transmitted to the computer through optical receiver, and the video image is stored and displayed in real time through the monitor. The biggest characteristic of this set of solutions is that the system is all digitized, the front end USES the infrared thermal camera, the network is convenient, the late positioning expansion and the system upgrade is convenient.
4. System Characteristics
1） The inspection robot with sliding contact power supply and integrated transmission technology has a repetitive positioning accuracy of ±2mm and smooth operation without jamming; 24 hours of uninterrupted operation, no need to wait for charging.
2）Automatic cruise function system provides a variety of automatic patrol plan and scheme, and realizes fully automatic operation. It can patrol the lithium battery warehouse several times a day, reducing the number of visits to the site and improving the work efficiency of staff.
3）Double-light image, auxiliary detection
The single network wire transmits infrared temperature and visible light image at the same time, the network bandwidth occupies low, the network is flexible.
4） Abnormal early warning and linkage alarm disposal
Different alarm levels can be set according to the temperature of the battery warehouse, and the robot can be given local acoustooptic warning and control center acoustooptic warning.
When the warehouse environment reaches the alarm parameters, fire, abnormal equipment at the inspection point, communication system failure, robot disconnected and other abnormal situations, the system will automatically alarm. When the staff determines the alarm information, the system can cancel the relevant alarm.
5） Fire detection and emergency treatment
Through inspection robot with a double light equipment, infrared equipment to identify temperature anomaly area, visible light auxiliary personnel positioning, found that the temperature anomaly or suspected fire location in time, if by the software system analysis point, whether to need to have a joint fire control system, after confirmation of ignition, send fire alarm to the local monitoring platform, at the same time inspection robot will move to a safe area.
6） Generate reports automatically
When the system software discovers temperature anomalies, a report with infrared and visible images will be automatically generated to record the temperature in the temperature measuring area for later viewing.