Cathode mounting structure of carbon battery

Abstract

The utility model provides a cathode mounting structure of a carbon battery. The cathode mounting structure comprises a zinc cylinder, a cathode cover and an insulating compression ring, the negative electrode cover is of a cylindrical structure consisting of a negative electrode cover bottom wall and a negative electrode cover peripheral wall; the bottom of the zinc cylinder is inserted into the cathode cover, the outer bottom surface of the zinc cylinder is attached to the inner surface of the bottom wall of the cathode cover, and the outer peripheral surface of the zinc cylinder is attached to the inner surface of the peripheral wall of the cathode cover; the outer surface of the bottom wall of the negative electrode cover is provided with an insulating compression ring embedding groove; and the insulating compression ring is embedded and matched in the insulating compression ring embedding groove. According to the utility model, the cathode cover and the insulating compression ring can be radially limited, and the cathode cover is prevented from radially shifting when a thermal shrinkage film is externally packaged on the battery and the bottom of the thermal shrinkage film is thermally shrunk in sequence, so that the central axis of the cathode cover is always kept coincident with the central axis of the battery, the packaging quality of the battery is improved, and the production efficiency is improved. And normal use of the battery is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery field especially relates to a negative electrode mounting structure of carbon battery. BACKGROUND

[0002] The carbon battery is a kind of primary battery, and its full name is zinc-manganese dry battery, which belongs to the primary battery in chemical power supply.The carbon battery is relatively cheap, and is mainly used for low-power electrical appliances, such as watches, doorbells, remote controllers, calculators and radios.

[0003] The positive active material of the zinc-manganese dry battery is manganese dioxide, which can be electrolytic manganese dioxide, natural manganese dioxide or chemical manganese dioxide, and also contains some carbon materials for conducting electricity, such as a mixture of one or several of acetylene black, graphite, graphene and carbon nanotubes.The positive active material also includes a small amount of zinc oxide material for adjusting the open voltage of the battery, suppressing harmful metal impurities, etc.The positive electrolyte is a mixed aqueous solution of zinc chloride and ammonium chloride.The positive current collector is a carbon rod.The negative active material of the zinc-manganese dry battery is zinc material, and the zinc cylinder made of zinc material serves as the negative active material, container and negative current collector.The positive active material and electrolyte are contained in the zinc cylinder.The positive end cover and sealing ring are provided at the opening of the top end of the zinc cylinder, and the positive end cover is separated from the zinc cylinder by the sealing ring;the negative plate (in the form of a round plate) and insulating compression ring are attached to the outer surface of the bottom end of the zinc cylinder;the zinc cylinder is covered with a heat-shrinkable film and a metal outer skin on the circumferential outer side, the end of the heat-shrinkable film is covered on the insulating compression ring by heat-shrinking process, and the end of the metal outer skin is covered outside the heat-shrinkable film;the negative plate region corresponding to the center cavity of the insulating compression ring serves as the negative external connection part of the battery for contacting the negative electrode of the electrical appliance to realize power supply. SUMMARY

[0004] The utility model aims at providing a negative electrode mounting structure of carbon battery.

[0005] The technical scheme for realizing the purpose of the utility model is: a negative electrode mounting structure of a carbon battery, comprising a zinc cylinder, a negative electrode cover and an insulating compression ring; the negative electrode cover is a cylindrical structure composed of a negative electrode cover bottom wall and a negative electrode cover peripheral wall; the bottom of the zinc cylinder is inserted into the negative electrode cover, the outer bottom surface of the zinc cylinder is attached to the inner surface of the negative electrode cover bottom wall, and the outer peripheral surface of the zinc cylinder is attached to the inner surface of the negative electrode cover peripheral wall; an insulating compression ring embedding groove is arranged on the outer surface of the negative electrode cover bottom wall, and the insulating compression ring is embedded and matched in the insulating compression ring embedding groove.

[0006] The negative electrode cover of the utility model is cylindrical, and compared with the prior art that the negative electrode of the carbon battery is a round sheet, the negative electrode cover peripheral wall is added to the negative electrode, the outer bottom surface of the zinc cylinder is attached to the inner surface of the negative electrode cover bottom wall, the outer peripheral surface of the zinc cylinder is attached to the inner surface of the negative electrode cover peripheral wall, and the radial position of the negative electrode is limited, the radial position of the insulating compression ring in the insulating compression ring embedding groove on the negative electrode cover is limited, and the radial displacement of the negative electrode caused by the heat shrinkable film of the battery is avoided, so that the center axis of the negative electrode (i.e. the negative electrode cover) is always coincident with the center axis of the battery, the battery packaging quality is improved, and the normal use of the battery is ensured.

[0007] Further, the bottom of the zinc cylinder is conical, the cross-sectional shape of the negative electrode cover peripheral wall is a right triangle, and the bottom of the zinc cylinder and the negative electrode cover peripheral wall are complementary in shape, so that the negative electrode cover and the bottom of the zinc cylinder are assembled to be cylindrical, and the subsequent coating of the heat shrinkable film and the metal outer skin is not affected.

[0008] Further, the negative electrode cover outer part protruding outward is arranged on the negative electrode cover bottom wall area corresponding to the center cavity of the insulating compression ring, and is used for abutting against the negative electrode of the electric appliance to realize power supply. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 It is an axial sectional structure schematic view of the negative electrode mounting structure of the carbon battery of the utility model;

[0010] Fig. 2 It is a top view structure view of the negative electrode cover of the utility model;

[0011] Fig. 3 It is a bottom view of the negative electrode mounting structure of the carbon battery of the utility model. DETAILED DESCRIPTION

[0012] The preferred embodiment of the negative electrode mounting structure of the carbon battery of the utility model is described in detail below with reference to the drawings.

[0013] Combined with the drawings Figs. 1-3The utility model discloses a negative electrode mounting structure of carbon battery, including zinc cylinder 10, negative electrode cover 20 and insulating press ring 30, the negative electrode cover 20 is the cylindrical structure that is formed by negative electrode cover bottom wall 21 and negative electrode cover peripheral wall 22, the bottom of zinc cylinder 10 is inserted in the negative electrode cover 20, the outer bottom surface of zinc cylinder 10 is inlaid with the inner surface of negative electrode cover bottom wall 21, the outer peripheral surface of zinc cylinder 10 is inlaid with the inner surface of negative electrode cover peripheral wall 22, the outer surface of negative electrode cover bottom wall 21 is equipped with insulating press ring embedding groove 23, and the insulating press ring 30 is embedded in the insulating press ring embedding groove 23.

[0014] The utility model discloses a negative electrode mounting structure of carbon battery, including zinc cylinder 10, negative electrode cover 20 and insulating press ring 30, the negative electrode cover 20 is the cylindrical structure that is formed by negative electrode cover bottom wall 21 and negative electrode cover peripheral wall 22, the bottom of zinc cylinder 10 is inserted in the negative electrode cover 20, the outer bottom surface of zinc cylinder 10 is inlaid with the inner surface of negative electrode cover bottom wall 21, the outer peripheral surface of zinc cylinder 10 is inlaid with the inner surface of negative electrode cover peripheral wall 22, the outer surface of negative electrode cover bottom wall 21 is equipped with insulating press ring embedding groove 23, and the insulating press ring 30 is embedded in the insulating press ring embedding groove 23.

[0015] Further, as shown in the drawings, Fig. 1 The bottom 11 of the zinc cylinder 10 is conical, the cross-sectional shape of the negative electrode cover peripheral wall 22 is a right triangle, and the bottom of the zinc cylinder and the negative electrode cover peripheral wall 22 are complementary in shape, so that the negative electrode cover 20 and the bottom 11 of the zinc cylinder are assembled in a cylindrical shape, so as to avoid affecting the subsequent wrapping of the heat-shrinkable film 40 and the metal outer skin 50. Of course, the bottom of the zinc cylinder 10 can be conical, but is not limited to this, and can also be cylindrical. Similarly, the cross-sectional shape of the negative electrode cover peripheral wall 22 can be a right triangle, but is not limited to this.

[0016] Further, as shown in the drawings, Fig. 1 、 Fig. 3 An outwardly protruding negative electrode cover external part 24 is arranged at the negative electrode cover bottom wall region corresponding to the central cavity of the insulating press ring 30, and is used for abutting against the negative electrode of the electrical appliance to realize power supply.

[0017] The negative electrode cover 20 of the utility model is a stainless steel product, and the insulating press ring 30 is a plastic product.

[0018] The above description is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent process transformation or direct or indirect application in other related technical fields according to the content of the utility model specification is also included in the patent protection range of the utility model.

Claims

1. A negative electrode mounting structure of a carbon battery, characterized by comprising: a negative electrode 1; a negative electrode lead 2; a negative electrode terminal 3; and a negative electrode terminal cover 4. The zinc cylinder, the negative electrode cover and the insulating compression ring; the negative electrode cover is a cylindrical structure composed of a negative electrode cover bottom wall and a negative electrode cover peripheral wall; the bottom of the zinc cylinder is inserted into the negative electrode cover, the outer bottom surface of the zinc cylinder is in close contact with the inner surface of the negative electrode cover bottom wall, and the outer peripheral surface of the zinc cylinder is in close contact with the inner surface of the negative electrode cover peripheral wall; an insulating compression ring embedding groove is arranged on the outer surface of the negative electrode cover bottom wall, and the insulating compression ring is embedded in the insulating compression ring embedding groove.

2. The negative electrode mounting structure for a carbon battery according to claim 1, characterized by: The bottom of the zinc cylinder is conical; the cross-sectional shape of the negative electrode cover peripheral wall is a right triangle; the shape of the bottom of the zinc cylinder and the negative electrode cover peripheral wall is complementary, so that the negative electrode cover and the bottom of the zinc cylinder are assembled in a cylindrical shape.

3. The negative electrode mounting structure for a carbon battery according to claim 1, characterized by: A negative electrode cover circumscribed part protruding outward is arranged on the negative electrode cover bottom wall area corresponding to the center cavity of the insulating compression ring.

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