DE2007893B2 - METHOD FOR FORMING THE ELECTRODES OF LEAD ACCUMULATORS - Google Patents

Claims (3)

1 2 Lead accumulator electrodes are predominantly in direct contact with the grid in which there is a metal grid as a mass carrier made of lead is contained, the predominantly lead surface of the grid itself will be converted into lead oxide with the valences 0 and + 2. 5 transforms. The lead oxide that forms on the grid from the gas bubbles rising up after the active material enters the plate grid. Once it has been released, the electrodes are then subjected to a persistence between the positive and the negative action, which is to some extent of the tive electrode type, so-called leakage currents, which is dependent on the electrode in question. Purpose lead to formation of lead dioxide,
This treatment is to create a certain structure in the case of io. The invention represents a method for building up the lead compounds mentioned. The loading prevents that. The electrolyte reaches the contact point and affects the result of the subsequent action and the formation of an electrolyte film, the creep-forming process, which enables electrochemical currents. A special method of converting the aforementioned compounds with invention is that a stream of air or gas with valences 0 and ^ 2 in lead compounds, with 15 at a certain speed along valence +4 in the positive electrodes and the contact point between electrodes and Means current to valence 0 in the negative electrodes. ladders flow by while the building is being made. For all"; Types of lead-acid battery electrodes The invention is illustrated with the aid of the drawing. and regardless of the treatment method that explains for example. they have been exposed, however, current in Fig. 20 F i g. 1 shows a cross section through an arrangement Live parts in the electrode, the voltage for carrying out the procedure. On the Plate grid, must be supplied so that the contact point of an electrode 1 rests a current to be mentioned electrochemical conversion takes place ladder 2 with its own weight. A degree can cover 3 made of non-conductive material covers the A common process used in shaping a shaping vessel. In the cover there are channels for tive and negative electrodes, so that air or gas is attached directly, which are denoted by the supply channel 4 after one of the treatments described. The gas is passed through the supply trodes either individually or several together into channels 4, which are provided in the cover 3 with guide grooves in a forming container. In . extend along the forming vessel, and of the forming vessel alternately one around the 30 supply channels 4, via branched air or other guide grooves either with electrodes, the gas channels 5, to the contact points. The channels are intended to be negative, or with electrodes which can, of course, be made positive in many ways. Mistake. After electrolyte. as shown in FIG. 2 shows. The final acid and sulfuric acid of a suitable concentration in lid 3, which covers the entire forming vessel, can fill the container and then the electrodes can of course only be connected to the outer shell for the DC power source, channels 4, 5 or a part thereof represent. Fig. 3 is started with the formation. Usually represents a variant of the channels, and in this the electrodes are connected by welding to the figure, an electrode section is connected in view of the current conductor of the power source. That shows. The electrode is also referred to here as 1. Current conductors for their part expediently consist of 40 and the current supply conductor with 2. The channel, which is made of lead rods. The electrodes, in which the two contact points surround the electrode 1, are transformed into anaovalent lead compounds by forming them into metallic to F i g. 1 and 2 are to be reduced with air or gas duct 5 'and lischem lead, nor need a gas line that supplies air or gas, especially not to be soldered, but one called guide line 4'. The top of the gets enough. Contact with the conductor, 45 forming vessel is denoted by 6 and the electrolyte level when these electrodes against the conductor are marked with a dash-dotted line with 7,
can lie. On the other hand, it is customary that the positive electrodes are connected by welding to the positive one another formation-technical advantage current conductors, so that the contact with respect to the later welding of several between this and ,, the electrodes with Safety 50 electrodes of the same polarity to plate sets,
Maintained during the entire duration of the formation- The contact point of the electrodes, which can be so-called preserved. In the case of the positive connections, the current vane is preferably the contact point where lead sulphate is formed, which is non-conductive. Because of the aforementioned connection and would destroy all contact. Sulphate content was this point in the hitherto used form largely due to the fact that sulphurous forming methods are thrown up after forming with acid when the gas bubbles burst, which are covered by a layer of dioxide that is formed with metal forming. A woven brush had to be brushed off before welding or, due to a considerable simplification when forming this electrical element, had to be removed by other scraping. One would be able to achieve this if one could not avoid oxy welding in the method according to the invention. 60 dation of the contact point takes place, you save yourself The present invention therefore relates to a form thus the entire cleaning work, mier method in which the electrodes, especially the _p ... positive claims to the current conductors without welding are closed, which is characterized in that 1. Process for forming electrodes Air or another gas around the contact point between lead-acid batteries, in which one or see electrode and conductor being blown. multiple electrodes in _; containing an electrolyte In the case of electrochemical oxidation, they are arranged side by side during the forming vessel Not only the lead compounds, and in which the electrode parts are in contact, are formed with current feeders, characterized by that the contact points between electrode 1 and current feeder 2 are exposed to a gas or air flow. 2. The method according to claim 1, characterized in that the contact points between Electrodes 1 and current leads 2 an air or gas tube in an air or gas duct 5 " be exposed above the electrolyte level 7 in the formation vessel. 3. Device for carrying out the method according to claim 1 or 2, characterized in that that the supply channels 4 or supply lines 4 'and the air or gas channels 5, 5 'are attached in the cover 3 of the forming vessel. 1 sheet of drawings