CN201532985U - Dry batteries that indicate their charge by their own color - Google Patents

Abstract

The utility model is a dry battery indicating the electric quantity by its own color, including positive electrode powder, negative electrode zinc cylinder, and electrolyte, and the cylinder wall of the negative electrode zinc cylinder is made with a thin wall, and the thickness of the thin wall is equal to the zinc thickness consumed when the battery discharge terminates. The thin wall is closely attached to the pH test paper, the battery's trademark skin is covered outside the pH test paper, and the trademark skin leaves a transparent window at the position of the pH test paper. When the battery is exhausted, the thin wall will be perforated, the electrolyte will contact with the pH test paper, and the test paper will change color, which can be seen directly on the trademark skin of the battery. It has the advantages of simple structure and reliability.

Description

Dry batteries that indicate their charge by their own color

technical field

The utility model is a dry battery.

Background technique

During the use of dry batteries, the positive and negative electrode materials continue to undergo chemical reactions, and finally completely discharge and terminate. Whether the battery is charged or not cannot be identified with the naked eye, and it is easy to misjudge it as a fault when the electrical appliance is in use, causing trouble. Existing dry batteries can't show whether there is electricity from the appearance, it is not intuitive.

Utility model content

The purpose of the utility model is to provide a dry battery that changes color in appearance when the power is exhausted, so as to be convenient to use.

The solution of the utility model is: a dry battery indicating the electric quantity through its own color, including the positive electrode powder, the negative electrode zinc cylinder, and the electrolyte, and it is characterized in that: the cylinder wall of the negative electrode zinc cylinder is made with a thin wall, and the thickness of the thin wall is equal to the discharge rate of the battery. The thickness of zinc consumed at the time of termination, the thin wall is tightly attached to the PH test paper, the battery's trademark outer skin is covered outside the pH test paper, and the trademark outer skin has a transparent window at the position of the pH test paper.

The utility model has the advantages that: since the thickness of the thin wall on the zinc cylinder is equal to the zinc thickness consumed when the battery discharge terminates, when the battery power is exhausted, the thin wall will be perforated, the electrolyte will contact with the PH test paper, and the test paper will change color. It can be seen intuitively from above that it has the advantages of simple structure and reliability.

Description of drawings

Below according to accompanying drawing and embodiment the utility model will be further described.

Accompanying drawing is the structural representation of the utility model.

In the figure: 1 positive cap, 2 seal, 3 PH test paper, 4 thin wall, 5 release paper, 6 trademark sheath, 7 carbon rod, 8 positive powder, 9 zinc cylinder.

Detailed ways

Referring to the accompanying drawings, the battery of the embodiment includes positive electrode powder 8, negative electrode zinc cylinder 9, and electrolyte infiltrated in the positive electrode powder, and its structure is the same as that of the existing dry battery.

Thin wall 4 is formed on the cylinder wall of negative electrode zinc cylinder 9, and the thickness of thin wall 4 is equal to the zinc thickness consumed when battery discharge terminates. Since the zinc cylinder of the dry battery has a margin, there is still a certain thickness when the battery is exhausted. The battery is manufactured based on this, and the thickness of the thin wall is ground on the zinc cylinder. The size of the thin wall is ￠3mm-￠5mm.

A pH test paper 3 is attached to the outside of the thin wall 4 .

The trademark sheath 6 of the battery is covered outside the pH test paper 3. In order to prevent the electrolyte from seeping out, the trademark sheath 6 adopts self-adhesive and is pasted on the zinc cylinder 9.

Trademark sheath 6 leaves transparent window on the position of PH test paper 3, to observe the color of test paper.

When the battery power is exhausted, the thin wall is perforated, the electrolyte and the pH test paper come into contact, and the test paper changes color, which can be visually seen on the battery's trademark skin.

Claims (1)

1. A dry battery that indicates the electric quantity by its own color, including positive electrode powder (8), negative electrode zinc cylinder (9), and electrolyte, characterized in that: the cylinder wall of the negative electrode zinc cylinder (9) is formed with a thin wall (4), The thickness of the thin wall (4) is equal to the zinc thickness consumed when the discharge of the battery is terminated. The thin wall (4) is closely attached to the pH test paper (3), and the trademark skin (6) of the battery is set outside the pH test paper (3). (6) A transparent window is left at the position of the pH test paper (3).

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