Lead-type anode post lithium battery

Abstract

The invention relates to the technical field of lithium batteries, in particular to a lithium battery structure with a leading-out wire. The invention relates to a lead-type anode post lithium battery comprising a battery housing; a lithium sheet, a side film and a carbon package are sequentially sheathed in the battery housing, wherein the port of the batter housing is provided with a cover film; the cover film is provided with a nut cap body which is connected with an anode leading-out structure, and the anode leading-out structure comprises a current collector performing the current collection function, an anode post and the leading-out wire; the current collector, the anode post and the leading-out wire are respectively independent components. The anode leading-out structure of the invention is characterized in that the current collector can choose pure nickel and alloy thereof with favourable electrical conductivity to manufacture and is manufactured into a flat structure, thus increasing the current output capacity of the battery and avoiding bending phenomenon when the current collector is inserted into the carbon package. The anode post adopts 4J28 alloy material to realize better sealing with glass, and the leading-out wire can adopt tinning alloy with strong tinning ability; in addition, the leading-out wire has favourable toughness and is not easy to break off.

Description

Technical field [0001] The invention relates to the technical field of lithium batteries, in particular to the improvement of the structure of lithium batteries with lead wires. Background technique [0002] Lithium batteries with lead wires are a type of lithium batteries, so lithium / thionyl chloride batteries also include lead wire structures. Lithium / thionyl chloride battery is a lithium battery with lithium metal as the negative electrode, thionyl chloride as the positive electrode active material and electrolyte, and carbon as the reaction carrier. Attached figure 1 , 2 It is the basic structure of the existing lithium / thionyl chloride battery. It includes a battery casing 1 and a lithium sheet 2, an edge film 3, and a carbon pack 4 sequentially sleeved in the battery casing. A cover film 5 is provided at the edge of the battery casing 1, and a cap assembly is provided on the cover film. The cap assembly includes a cap body 6, a sealing body 7 provided on the cap body, an...

AI Technical Summary

Problems solved by technology

Since the whole battery is immersed to inject liquid, it will cause part of the lead wire 11 to be oxidized and not easy to be tinned

For this reason, it is necessary to manually clean or scrape off the oxide layer on the lead-out line, which makes the production process complicated, the manufacturing cost is high, and there is a hidden danger of short circuit during operation.

[0005] 2. Due to the existing one-piece positive electrode lead-out structure, the lead-out wires extend long outside the battery case, which is easy to bend and deform during storage, transportation and processing, and may also loosen or damage the glass seal, resulting in Poor battery sealing performance

Images