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Structure and manufacturing method of anode current collector in cylindrical zinc-air battery

A current collector and anode current technology, applied in the direction of electrode carrier/collector, fuel cell half-cell and primary battery half-cell, etc., can solve the problem of increased battery ion migration or diffusion path, which is not conducive to high battery current Discharge, increase electron transfer resistance and other issues, to achieve the effect of increasing the apparent surface area, improving the discharge capacity and output power, and shortening the distance

Inactive Publication Date: 2016-01-20
胡伟康
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The widening of the distance between the cathode and anode in the battery will inevitably lead to an increase in the ion migration or diffusion path inside the battery, increasing the electron transfer resistance
The internal resistance of the battery increases, which is not conducive to the high current discharge of the battery

Method used

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  • Structure and manufacturing method of anode current collector in cylindrical zinc-air battery
  • Structure and manufacturing method of anode current collector in cylindrical zinc-air battery
  • Structure and manufacturing method of anode current collector in cylindrical zinc-air battery

Examples

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Effect test

Embodiment 1

[0017] The manufacturing method of the anode current collector structure in the cylindrical zinc-air battery described in this embodiment is to take a piece of red copper material 1 with a thickness of 0.15 mm and a mesh structure, and cut the material into a rectangle: 26 mm long and 25 mm wide. Under the control of stainless steel cylindrical rollers, they are lightly rolled together to form a multi-layer cylindrical shape, and then stretched radially to form a concentric spiral structure 2, the innermost end 3 of the spiral structure 2 is connected to the anode tab 4 welding, and the end of the anode tab 4 is embedded in the anode plastic sealing ring and connected with the circular anode cap, and the surrounding is provided with a sealing plastic ring to form the anode cap of the anode current collector of the AA battery.

[0018] According to the calculation, the weight of the AA-type spiral anode current collector copper material is 0.38 grams, and the apparent surface ar...

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Abstract

The invention discloses a cylindrical zinc-air battery anode current collector structure which comprises an anode terminal and a current collector, wherein the current collector is fixedly arranged on the anode terminal; the current collector adopts a laminary spiral structure and is vertically arranged, and the spiral structure and the anode terminal are concentric. The structure has the characteristic that laminary material is utilized to be coiled to form the current collector adopting the spiral structure, so that the surface area of the current collector is increased. According to the cylindrical zinc-air battery anode current collector structure, which is provided by the invention, the structure of the anode current collector is replaced by the spiral structure innovatively, so that under the same use environment, the current collector has a higher surface area ratio per unit mass, and the apparent surface area of the current collector is increased significantly, and under the conditions of not increasing the weight of the anode current collector and not sacrificing the energy density of a battery, the space between a cathode current collector and an anode current collector of the battery can be effectively reduced, and discharge capacity and output power at a high speed are improved.

Description

technical field [0001] The invention relates to an alkaline battery, in particular to an anode current collector structure in a cylindrical zinc-air battery and a manufacturing method thereof. Background technique [0002] In the existing cylindrical zinc-air battery patents, the problems of the structure of the cylindrical zinc-air battery, battery leakage, alkali creep, and battery sealing and their solutions are mainly described. The anode current collectors are all made of needles shaped current collector bar, which is the same as the anode current collector in the cylindrical zinc-manganese battery. When a large current is discharged, due to the small specific surface area of ​​the needle-shaped current collector, it often leads to a large anode polarization. In addition, the distance between the anode and the cathode in the cylindrical zinc-air battery is relatively large (compared with the cylindrical zinc-manganese battery), and the air electrode in the cylindrical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/78H01M12/06
CPCY02E60/10
Inventor 胡伟康
Owner 胡伟康
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