Hermetically sealed lead battery

FIELD: electrical engineering; lead battery manufacture.

SUBSTANCE: proposed lead battery has strengthened active material on its positive plate thereby enhancing its utilization efficiency at low internal resistance of battery. Novelty is that only positive plates hold in their voids gel-like sulfuric-acid electrolyte and remaining space of battery is filled with liquid sulfuric acid electrolyte.

EFFECT: enlarged service life of battery.

1 cl, 1 tbl

 

The invention relates to the electrical industry and can be used in the manufacture of lead acid batteries.

Known lead-acid battery containing an electrode unit consisting of separated by separators negative and positive electrodes, and sulfuric acid electrolyte (A.S. No. 524266, CL 10/12, 1976).

The disadvantage of this battery is that because the sulfuric acid electrolyte in the battery is in a liquid state during operation of the battery there is a loss of contact of the active mass with shunts positive electrode, resulting in the observed dislodging active mass and settling it on the bottom of the tank as sludge. The consequence is the reduction of the capacitive characteristics, and consequently, reduction of battery life.

As a prototype selected U.S. patent No. 3257237 (CL H 01 M 10/06, 1966). In the mentioned patent in lead-acid battery all the sulfuric acid electrolyte is in a gel state. The gel electrolyte occupies the entire volume of the battery, including the pores, both positive and negative electrodes. The disadvantage of this battery is that the gel electrolyte has a higher resistance, which increases the internal resistance of the battery. In addition, heliobas the initial electrolyte because of its high density makes the exit of gas from the battery. The consequence is the reduction of the capacitive characteristics, and consequently, reduction of battery life.

The claimed invention is directed to solving the problem of increasing the service life of the lead battery, due to hardening of the active mass of the positive electrode and thereby increasing efficiency while maintaining low internal resistance of the battery. The problem is solved in that the positive electrode lead battery contained in the pores of the gel sulfuric acid electrolyte, and the remaining capacity of the battery (including the pores of the negative electrode) contains sulfuric acid electrolyte in a liquid state.

Comparative analysis with known lead batteries shows that the proposed solution is a new one.

The invention consists in the following. The pores of the positive electrode filled with a gel-like electrolyte, and the remaining capacity of the battery (including the pores of the negative electrode) filled with sulfuric acid electrolyte in a liquid state. The gel electrolyte in the pores of the positive electrode strengthens the structure of the active masses of these electrodes and thereby prevents it from dislodging during operation of the battery. This preserves the low internal resistance of the Akku is ulator due to liquid sulfuric acid electrolyte in the remaining amount of the battery. Moreover, the gas outlet of the announced battery is not difficult. The consequence is to increase the capacitive characteristics, and therefore increase battery life 1.4-1.6 times.

By analogy with the prototype was made the layout of the battery, as well as the layout of the proposed lead battery. As shown by experimental data (see table)offered the lead battery has a longer lifespan compared to the prototype due to the hardening of the active mass of the positive electrode and thereby increasing efficiency while maintaining low internal resistance of the battery.

Table
Life at 100%depth of discharge cycles.
1.Proposed lead-acid battery268
2.The prototype U.S. patent No. 3257237166

Sealed lead-acid battery containing an electrode unit consisting of separated by separators negative and positive electrodes, and sulfuric acid electrolyte, wherein the positive electrodes contain in the pores of the gel sulfuric acid electrolyte, and the rest of Jim battery contains sulfuric acid electrolyte in a liquid state.



 

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4 cl, 1 tbl

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