What effect does the heavy or light pole piece attached material have on the battery?

Date:2021-12-30
Summary:

1. The main components of the battery are: positive ele […]

1. The main components of the battery are: positive electrode sheet, negative electrode sheet, cap, steel shell, electrolyte, sealing ring and diaphragm paper.

2. The core component of the battery is composed of positive electrode sheet and negative electrode sheet. Therefore, the attachment of the positive and negative plates directly affects the performance of the battery. Understand the specific structure of the battery, and then in turn understand the composition and function of the positive electrode sheet and the negative electrode sheet.

3. The positive electrode sheet is composed of: foamed nickel (conductor) and positive electrode chemical raw materials. The negative electrode sheet is composed of: steel strip and negative electrode chemical raw materials. To put it simply, the chemical raw material is tightly connected with the foamed nickel (steel strip) through drawing slurry to form the positive electrode sheet (negative electrode sheet).

4. In the process of battery pack production, there are the following rules: The negative electrode determines the battery's stable performance and overcharge (discharge) performance. The positive electrode determines the capacity of the battery. If the battery is in the production process, these conditions will have a greater impact on the battery.
A: The lightness of the positive electrode will lead to the "low capacity" of the battery;
B: A heavy positive electrode will cause the battery to leak and swell during the charging process. If it is more serious, it will cause the battery to explode;
C: The lightness of the negative electrode will cause the battery to leak and the bottom of the drum during the charging process. If it is more serious, it will cause an explosion;
D: The weight of the negative plate will affect the difficulty of the battery in the assembly process, resulting in the scrap or short circuit of the positive and negative plates in the process of inserting the case. In addition, the heavy weight of the negative plate will lead to the waste of battery raw materials and reduce the material utilization rate of the battery. Therefore, whether the positive and negative plates are lighter or heavier, they will have a greater impact on the battery.
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