Flexible lead-acid battery core easy to recycle, and preparation method of flexible lead-acid battery core

Abstract

The invention relates to a preparation method of a flexible lead-acid battery core easy to recycle. The preparation method of the flexible lead-acid battery core is characterized by taking porous glass fiber cloth made of compound sodium alginate fiber as a supporting layer, and comprises the following steps: applying metal flow collection layers to two surfaces of the supporting layer by adopting a vacuum sputtering or vacuum evaporation coating method, coating positive and negative electrode active substances respectively, and drying; spraying a sodium alginate solution on the dried surface, so as to form an isolating layer; and drying so as to obtain the flexible lead-acid battery core capable of being wound. The assembling is performed according to required capacitances, shapes and sizes, electrode leading-out terminals are connected and are pressed in a shell, then an electrolyte is filled in the shell, and the sealing is performed, so that the flexible lead-acid battery core easy to recycle is obtained.

Description

technical field [0001] The invention relates to a preparation method of a lead-acid battery core, in particular to a preparation method of a flexible and easily recyclable lead-acid battery core. Background technique [0002] In recent years, due to the rapid increase in demand for various electric tools and electrical appliances, the demand for high-performance batteries is increasing and urgent. Lead-acid battery is the most important type of product in the current power battery market. It has the advantages of low price and durability, but has the disadvantage of low specific energy. On the other hand, as a result of extensive use of various storage batteries, the recycling of spent materials has increasingly become a social problem to be solved urgently. The dismantling and separation of waste batteries and the utilization of components will become the focus of attention of the entire human society. [0003] Bipolar sealed lead-acid battery is a new type of lead-acid b...

AI Technical Summary

Problems solved by technology

[0013] 1. The utilization rate of the active material of the plate in the traditional lead-acid battery is mostly only about 45%. The reason is mainly related to the thickness of the plate, the surface area of ​​the plate, and the density of the electrolyte. Therefore, in order to improve the utilization of the active material rate, it is necessary to increase the contact area between the surface of the plate and the electrolyte as much as possible

[0014] 2. The active material of traditional lead-acid batteries mainly adopts cast grids. During the casting process, defects such as pores, sand holes, cracks, shrinkage cavities and skews usually occur, resulting in poor product uniformity and have to be assembled during assembly. Add the board matching process in order to obtain the consistency of the performance of the same batch of products, which leads to the problems of low labor efficiency and unstable product quality

[0015] 3. In the process of grid casting, the high-temperature molten lead vapor will inevitably lead to the deterioration of the production environment, affect the health of employees, and cause environmental pollution

[0016] 4. Due to the complex assembly process required for the cast grid structure, it will be difficult to achieve large-scale continuous production in the production process

[0017] 5. The cast grid structure is difficult to effectively use the effective space in the battery body, and it will also lead to increased internal resistance and reduced conductivity

[0018] 6. Limited by the specifications of the grid mold, it is difficult to flexibly adjust and change the capacity and size of the battery according to the requirements of use, thus limiting the development of product varieties and uses

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