How to correctly select lithium battery testing equipment?
In recent years, the large-scale manufacturing of power lithium batteries has started, putting forward stricter requirements for product performance and safety. As an important level of battery safety, the importance of battery testing equipment is also increasingly prominent. Faced with the mixed quality of testing equipment in the market, boastful and exaggerated propaganda, and dazzling professional terminology, from aspects such as testing items, types, and performance. How do we choose a lithium battery testing device that truly meets our needs?
Firstly, from the main testing items, it mainly includes battery cycle life test, capacity test, charge discharge characteristic test, charge retention ability test, factory consistency test, temperature characteristic, rate characteristic, constant power characteristic, pulse characteristic, open circuit voltage, energy efficiency, safety test, etc.
Secondly, lithium battery testing equipment is divided into linear and feedforward types based on energy consumption.
Linear type: During the discharge process, the current passes through the load and is mainly consumed in the form of thermal energy. Advantages: Simple structure, relatively simple and mature technology, easy to install and maintain. Suitable for low-power charging and discharging use.
During the discharge process, the battery energy is fed back to other devices for battery charging or the power grid through a bidirectional inverter. Advantages: Small footprint, energy saving and consumption reduction, reducing air conditioning cooling and heat dissipation costs. Suitable for high-voltage high-capacity batteries, charging and discharging, or large-scale charging and discharging.
Finally, how to determine the performance of lithium battery testing equipment can be considered from aspects such as testing accuracy, current response time, switching time, data collection frequency, software performance, and auxiliary functions.