RU2298265C1 - Silver-zinc battery for short and extra-short discharge conditions - Google Patents

Abstract

FIELD: electrical engineering; silver-zinc batteries for short and extra-short discharge conditions.

SUBSTANCE: proposed stand-by chemical current supply has unlike-polarity plates with separators in-between placed in electrolyte-filled jar and plate leads connected to binding posts. Novelty is specific mechanical design of battery leads which are made in the form of flat metal strips provided with side notch, their top part being bent through 180 deg. Leads are reliably attached to binding posts by means of solder heated to temperature over 180 °C.

EFFECT: enhance reliability of soldered joint, facilitated manufacture of silver-zinc battery.

1 cl, 2 dwg

Description

The claimed invention relates to electrical engineering and can be used in the production of silver-zinc batteries for short and especially short discharge modes. Specifically, the invention relates to the construction of current leads of electrodes soldered by induction brazing directly into a hollow boron.

Analysis of the prior art on this issue showed the following.

The following technical solutions are analyzed:

1. US patent No. 4317870 "The design of the current lead HIT".

2. US patent No. 4948681 "Current output of the battery."

3. US Patent No. 4833049 "Sealing the current lead containing two sealing layers."

4. US patent No. 4920018 "Site sealing the current terminals of the battery."

5. US patent No. 4879191 "Site sealing the current terminals of the battery."

6. US patent No. 4775607 "Method of sealing current lead HIT".

7. US patent No. 4934046 "Method for sealing the battery boron."

These technical solutions are not acceptable for silver-zinc batteries for short and extremely short (up to 5 min) discharge modes, because attempts to use them, conducted by the applicant, did not give the required result for the claimed battery.

Closest to the claimed invention is the design of a commercially available firm SAFT (France) battery 120RA3, selected by the applicant as a prototype.

In this battery, the bourne consists of a rod part with a thread for fasteners connected to a stamped cavity intended for placement of current leads in it. The node “current outputs - boron” is a boron, in the stamped plane of which vertically flat rectangular current leads are mounted and soldered with an alloy with a melting point not higher than 190 ° C. To protect the non-alkali solder from dissolving, the soldering spot is filled with a polymer composition.

The disadvantages of this design:

- with an increase in the temperature of the boron during operation (accidental weakening of contact with the inter-element jumper), the solder may melt with contact with the plate block;

- the constructive arrangement of the current leads in the stamped plane of the boron does not provide the same clearance between the ends of the current leads, thereby not uniformly wetting all current leads with solder;

- the vertical arrangement of the current leads does not allow complete visual control of the quality of soldering.

The objective of the invention is the development of the design of the current leads of the electrodes of the silver-zinc battery, designed for soldering into the cavity of the Born, in order to improve the reliability of the soldered connection "current leads - Born".

The problem is solved due to the fact that in a silver-zinc battery for short and extremely short charge modes, containing bipolar electrodes separated by separators, placed in a housing filled with electrolyte, and electrode leads connected to the boron, the connection of the current leads to the boron is carried out due to that the current leads are flat metal plates having cutouts on the side, and the upper part of which is bent 180 °.

The invention is illustrated by the drawings shown in figures 1 and 2.

The following positions are indicated in the drawing:

1 - current output;

2 - electrode;

3 - born of the same sign (+) and (-);

4 - the place of the soldered connection of the node "current outputs - Born."

The design of the current lead is a flat metal plate 1 having a cutout on the side and bent by 180 ° the upper part by the value of "D" (see figure 1).

The drawings show the design of the electrode current lead - Fig. 1 and the relative position of the electrode block and the same sign bourns - Fig. 2, where each electrode (positive or negative) is made in a special conductor, in which the relative position of the electrode and the current lead relative to lines B and G is determined (see figure 1).

Next, the electrode block 2 of the chemical current source is assembled in another special conductor, which provides a spatial arrangement of the current leads of the positive and negative electrodes in such a way that, when soldering in the Born 3, the surfaces B and G of the current leads of the unipolar electrodes are located in the lower edge of the Born (see figure 2) .

This design allows you to fix the specified distance "D" (see figure 1) between the electrodes of the current leads of the same polarity over the entire width of the boron cavity and create the effect of capillary rise of the solder during brazing along the width of the bent part of the current lead.

EFFECT: improved reliability of soldering of a node “current outputs - borne” with solder with a melting temperature over 320 ° С;

- the design can be used alkali-resistant solder with a melting point above 320 ° C, which increases the resistance of the current-carrying parts of chemical current sources to overheating during operation;

- the design provides visual control over the quality of soldering;

- the design allows you to quickly perform the soldering process, which prevents damage to the insulating polymer covers on the current leads and the destruction of the separator material and the active mass.

Claims (1)

A silver-zinc battery for short and very short discharge modes, containing bipolar electrodes separated by separators, placed in a housing filled with electrolyte, and electrode leads connected to the bourns, characterized in that the connection of the current leads to the bourns is carried out due to the fact that the current leads represent a flat metal plate having a cutout on the side, and the upper part of which is bent 180 °.

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