Method for testing thermal parameters of non-uniform structure

• Main Authors: YE SHULIANG, HOU DEXIN
• Format: Patent
• Language: Chinese; English
• Published: 05.06.2020
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method suitable for testing thermal parameters of a non-uniform structure, especially the non-uniform structure formed by connecting and combining a plurality of components,such as a lithium battery module. According to the method, a to-be-tested sample is placed in a constant-temperature T0 environment for energy storage, then heat dissipation measures are taken on a cooling surface, and the effect of the cooling surface can be approximate to the first type of boundary condition of the temperature T1. The temperature change of one end, far away from the cooling surface, of the to-be-tested sample in the heat dissipation process is recorded, and the thermal parameters such as the equivalent heat conductivity coefficient and the inter-component contact thermal resistance of the internal components of the non-uniform structure are inverted by using the data. According to the invention, thermal parameters, such as an equivalent heat conductivity coefficient, contact thermal resistance a