Because the battery energy storage technology laboratory is committed to the research and development of large-scale energy storage technology, which is closely connected with people's production and life, it has attracted great attention from visitors.
Research and test battery internal and external characteristics
In the battery external characteristics experiment area, technicians introduced various environmental simulation test boxes and battery charge and discharge testers of different specifications to the visitors.
All charge and discharge testers in the experimental area can be controlled through the control platform of the monitoring room, so as to realize different charge and discharge procedures and regulation of operating conditions.
Put the battery into the environmental simulation box to set the environmental conditions, and conduct the charge and discharge test of the battery to obtain the external characteristic parameters of the battery under certain conditions, such as discharge capacity, energy density, cycle life, power characteristics, and failure performance.Also read：48v lithium ion battery 200ah
The battery internal characteristics test area is equipped with a complete battery internal characteristics test platform, which can study the microstructure, structure, element composition and thermodynamic characteristics of key battery materials.
By comparing various internal characteristic parameters during use and after failure, the experimenter can obtain the failure mode and influencing factors, and analyze and evaluate the performance, advantages and disadvantages of the existing battery from the perspective of the internal characteristics of the battery, and determine the use of the battery. Principles and performance improvements play a very important role.
According to technicians, the core of the battery safety problem is the deterioration of internal reactions. By building a testing platform for battery external characteristics and internal characteristics, the laboratory combines the external and internal characteristic parameters of the battery to study the coupling relationship between the internal and external characteristics of lithium-ion batteries, and establish a battery state evaluation and analysis system to provide large-scale storage for lithium-ion batteries. The application provides security.
Assess battery safety risks
At present, battery safety is a common topic of national concern. According to technical personnel, the safety problems of batteries are mainly due to two aspects: one is the characteristics of the battery itself, and the other is caused by sudden external events or improper application of batteries.
There are a series of potential exothermic reactions in the battery system, which are the root causes of battery safety problems.Also read：lifepo4 10kwh manufacturer
If the battery encounters some emergencies or improper use, such as overcharge, hard object puncture, extrusion, high temperature, it is easy to lead to a series of physical and chemical reactions of electrodes, electrolytes, diaphragms and other materials, such as positive electrode decomposition, diaphragm Damage leads to internal short circuits, etc. These reactions generate a lot of heat. Once the heat cannot be dissipated in time, thermal runaway of the battery will occur, causing the battery to catch fire and explode.
The technicians specially warned that once the battery burns and explodes, special attention should be paid to preventing debris, smoke and shock waves generated by the explosion to ensure personal safety.
In addition, the technicians also explained the concerns of battery safety evaluation technology and the simulation method of safety problems to the visitors from the application scenarios of electric energy storage and electric vehicles.
More details:aimeno