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Zinc-manganese dry battery with negative electrode body coated with anti-leakage film and manufacturing method thereof

A technology of zinc-manganese dry battery and anti-leakage film, which is applied in the field of lead-free, cadmium-free, mercury-free zinc-manganese dry battery, and the field of manufacturing the battery, which can solve the problems of occupying the internal space of the battery, reducing the cost performance of the battery, and increasing the cost of the battery.

Active Publication Date: 2020-09-08
CHUNG PAK GUANG DONG BATTERY IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, using the method of thickening the wall thickness of the zinc cylinder to improve the leak-proof performance of the battery will occupy the internal space of the battery on the one hand, and increase the cost of the battery on the other hand, making the cost performance of the battery lower.

Method used

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  • Zinc-manganese dry battery with negative electrode body coated with anti-leakage film and manufacturing method thereof
  • Zinc-manganese dry battery with negative electrode body coated with anti-leakage film and manufacturing method thereof
  • Zinc-manganese dry battery with negative electrode body coated with anti-leakage film and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Before the battery assembly process, a layer of leak-proof film 8 is pasted on the outer surface of the negative electrode body 12 . The anti-leakage film 8 is nanometer zirconia-polyethylene, and its inner surface is coated with epoxy resin adhesive. For the R20 type battery, the height of the anti-leakage film 8 is 48mm, the width is 104mm, and the thickness is 0.08mm. The adhesive-coated inner surface of the leak-proof film 8 is in close contact with the outer surface of the negative electrode body 12 without leaving gaps or air bubbles, so as to avoid adversely affecting the leak-proof effect.

[0045] After pasting the leak-proof film 8, put the pulp paper 10 inside the negative electrode body 12, and insert the paper cup 11 from the top of the negative electrode body 12, and then put the carbon powder column 5 into it. Carbon powder column 5 contains 45% manganese dioxide, 15% carbon and 28% water (by weight), and weighs 60 g. Put the pressed powder paper circle...

Embodiment 2

[0048] Before carrying out the battery assembly process, a layer of waterproof paint is evenly coated on the outer surface of the negative electrode body 12 to form a uniform waterproof film (leakage-proof film 8). The composition of the paint is a hot melt of nano zirconia-polyethylene. For the R20 type battery, the height of the anti-leakage film 8 is 48mm, and the thickness is 0.08mm. The paint should be evenly coated on the outer surface of the negative electrode body 12, preferably every position can be coated 2 times or more, and no gaps or air bubbles should be left as far as possible, so as to avoid adversely affecting the leak-proof effect.

[0049] After coating the leak-proof film 8, put the pulp paper 10 inside the negative electrode body 12, and insert the paper cup 11 from the top, and then put the carbon powder column 5 into it. The carbon powder column contained 45% manganese dioxide, 15% carbon and 28% water (by weight) and weighed 60 g. Put the pressed powd...

Embodiment 3

[0052] Before the battery assembly process, a layer of energy-gathering and leak-proof film 8 is pasted on the outer surface of the negative electrode body 12 . This energy-gathering anti-leakage film 8 is polyvinyl chloride (PVC), and its inner surface is coated with epoxy resin adhesive. For the R20 type battery, the height of the anti-leakage film 8 is 48mm, the width is 104mm, and the thickness is 0.08mm. The adhesive-coated inner surface of the leak-proof film 8 is in close contact with the outer surface of the negative electrode body 12 without leaving gaps or air bubbles, so as to avoid adversely affecting the leak-proof effect.

[0053] After pasting the leak-proof film 8, put the pulp paper 10 inside the negative electrode body 12, and insert the paper cup 11 from the top of the negative electrode body 12, and then put the carbon powder column 5 into it. Carbon powder column 5 contains 45% manganese dioxide, 15% carbon and 28% water (by weight), and weighs 60 g. Put...

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Abstract

The invention discloses a lead-free cadmium-free mercury-free zinc-manganese dry cell meeting environment protection requirements and having excellent leakage-proof performance and low cost and a manufacturing method thereof. The zinc-manganese dry cell comprises a carbon rod positioned in the middle of the battery, a carbon powder column surrounding the carbon rod, pulp paper coated on the outer surface of the carbon powder column and a cathode body arranged on the outer surface of the pulp paper. The zinc-manganese dry cell is characterized in that the outer surface of the cathode body is provided with one or multiple leakage-proof films insoluble in water and resistant to acidic electrolyte corrosion.

Description

technical field [0001] The invention relates to a dry battery, more specifically, to a lead-free, cadmium-free, mercury-free, zinc-manganese dry battery with a negative electrode body coated with a leak-proof film. Furthermore, the invention also relates to a method of manufacturing the battery. Background technique [0002] Zinc-manganese battery has a history of more than 100 years since its development. It is characterized by easy use and low price. It is still the largest and most widely used battery among disposable batteries. However, harmful substances such as lead, mercury, and cadmium in zinc-manganese battery materials are harmful to the human body and the environment, and people pay more and more attention to solving the adverse effects of these harmful substances. Today, with the increasing awareness of environmental protection, people's environmental protection requirements for batteries are also getting higher and higher, making the battery industry move towar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/06H01M6/00H01M6/08
CPCH01M4/06H01M6/005H01M6/085
Inventor 叶敏华
Owner CHUNG PAK GUANG DONG BATTERY IND