What problems can arise during the composition of lithium batteries? Slight differences in the materials that make up lithium cells and varying levels of assembly processes can cause lithium cells to exhibit inconsistent performance during use and storage, which is commonly referred to as the discreteness phenomenon of lithium batteries.

The discrete phenomenon of lithium batteries is quantified by an indicator called discreteness, which is obtained from the functional relationship of several parameters. The main factors causing changes in the discreteness value include resistance, voltage, capacity, and temperature.

1. The inconsistency of battery internal resistance, especially polarization resistance, causes individual batteries to experience drastic voltage changes during charging and discharging, which in turn leads to drastic changes in the entire battery pack.

2. Inconsistencies in individual cell voltages will affect the battery pack's peak regulation capability, reducing the overall energy output of the battery pack.

3. Since the battery undergoes exothermic and endothermic processes during operation, its temperature constantly changes. When it overheats, it can lead to performance degradation and safety risks. It has been proven that in recent years, the triggers for fires during electric vehicle operation and testing were all caused by batteries overheating due to inadequate over-temperature protection. This applies not only to lithium manganese oxide batteries but also to lithium iron phosphate batteries.

4. Capacity is the most serious factor in discreteness. Inconsistent capacity mainly causes two performance issues: first, some batteries may be in an overcharge or over-discharge state, leading to safety hazards such as fire or explosion; second, low-capacity individual batteries end work prematurely, affecting the complete energy release of other individual batteries in the battery pack, thereby causing a reduction in the overall battery pack lifespan.

The main reasons for changes in lithium battery dispersion values are as described above. Lithium batteries must be properly handled. I believe you also know that lithium batteries are harmful to the environment. Thank you for browsing and supporting!