Power lead-acid storage battery diaphragm sleeve

Abstract

The invention discloses a power lead-acid storage battery diaphragm sleeve which is a bag type battery diaphragm sleeve and comprises an opening end; circulating holes are formed in the bottom end opposite to the opening end. The power lead-acid storage battery diaphragm sleeve has the advantages as follows: the circulating holes are formed in the bottom end of the existing bag type battery diaphragm sleeve; an electrolyte circulation flowing channel is formed between the circulating holes and the opening end at the upper part of the diaphragm sleeve, so that electrolyte fluidity in the diaphragm is improved and the electrolyte circulation smoothness and the electrolyte concentration uniformity in the whole battery can be improved, thereby reinforcing the battery performance and prolongingthe service life of the battery; in addition, by virtue of the bottom end of the diaphragm sleeve, the infinite upward movement of the diaphragm sleeve due to electrolyte circulation can be limited,so that it is ensured that the diaphragm sleeve can well support a positive electrode plate and a negative electrode plate, and performance stability of the battery can be improved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a diaphragm sleeve for a power lead-acid battery. Background technique [0002] The power battery diaphragm sleeve is a component made of diaphragm material that plays a supporting role between the positive plate and the negative plate of the battery. It is a very critical part of the battery and has a direct impact on the safety and cost of the battery. Its main function is to isolate the positive and negative electrodes, so that the ions in the electrolyte can freely migrate and pass between the positive and negative electrodes. [0003] At present, there are mainly two types of pouch-type battery separator sleeves and sleeve-type battery separator sleeves on the market. [0004] The pouch battery separator sleeve only has an opening at one end. When using it, insert the electrode plate into the pouch battery separator sleeve from one end of the opening. The outside of the s...

AI Technical Summary

Problems solved by technology

[0004] The pouch battery separator sleeve only has an opening at one end. When using it, insert the plate from the open end into the pouch battery separator sleeve. The outside of the separator sleeve is another polar plate, although it can effectively isolate the positive and negative plates. To prevent the short circuit of the plate, but because the bag-type battery diaphragm sleeve has only one port opening, when the battery is charged at the end, the gas generated by the electrode is precipitated from the opening end, which cannot drive the battery electrolyte to flow and migrate inside and outside, and there is a problem of poor electrolyte circulation , resulting in uneven electrolyte concentration inside the battery, which can easily cause early failure of the power battery and shorten the service life of the battery

[0005] There are openings at both ends of the sleeve-type battery separator sleeve. When using it, just insert the plate into the sleeve-type battery separator sleeve. The outside of the sleeve-type battery separator sleeve is another polar plate. However, since both ends of the sleeve-type battery diaphragm are open, the electrolyte will drive the sleeve-type battery diaphragm to move during the recycling process, resulting in a positional shift of the sleeve-type battery diaphragm. Thus affecting its stability when supporting the positive and negative plates, affecting the performance of the power battery

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