Product description

Lithium-ion batteries in the charge and discharge process, there will be a phenomenon of size expansion or contraction, which is a macro performance caused by a variety of reasons. In the actual use of lithium batteries, expansion is not an ideal reversible behavior, so lithium battery expansion will cause cell deformation, electrode material rupture, SEI film rupture and other consequences.

The battery expansion test system is highly integrated with multiple modules such as battery charging and discharging, temperature control box, and expansion test, which can evaluate the expansion behavior of different forms of batteries under various test modes under battery charging and discharging conditions, providing real and reliable data support for the research and development of electrode materials and the analysis and research of expansion mechanism.

Product characteristics

· A variety of battery types: alkali metal ion batteries (Li/Na/K), polyvalent ion batteries (Zn/Ca/Mg/Al), other secondary metal ion batteries (metal-air, metal-sulfur), solid state batteries

· A variety of battery forms: soft pack battery, square shell battery, cylindrical battery, single battery, model button battery, solid state battery

· Multiple test modes: manual pressure, automatic pressure, constant pressure, intermittent constant pressure, pulse constant pressure, constant interval, steady state compression modulus, transient compression modulus

· A variety of test fixtures: soft pack battery, square shell battery, cylindrical battery, single battery, model button battery, solid state battery

· Multi-dimensional test variables: temperature, expansion force (N or kg), expansion amount (μm), expansion rate (%), current/voltage, differential capacity (dQ/dV) and their correlation