Evaluation method for particle size uniformity of battery negative electrode material

• Main Authors: WANG WANSHENG, WEI MIMI
• Format: Patent
• Language: Chinese; English
• Published: 07.03.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to the technical field of batteries, and discloses a method for judging the particle size uniformity of a battery negative electrode material, and the method comprises the following steps: providing a finished battery, the negative electrode of which comprises a negative electrode material to be detected; under a preset condition, performing a performance test on the finished battery to obtain performance characterization parameter information characterizing the electrical performance of the finished battery; and obtaining particle size uniformity information of the to-be-tested negative electrode material of the finished battery according to the performance characterization parameter information. In the evaluation method, the negative electrode material to be tested is prepared in the finished battery for testing, and the particle size uniformity of the particles of the negative electrode material to be tested is reflected by guiding the performance characterization parameter informatio