Carbon battery capable of preventing negative electrode from deviating

Abstract

The utility model provides a carbon battery capable of preventing a negative electrode from deviating. The carbon battery comprises a zinc cylinder, a negative electrode piece and an insulating compression ring which are sequentially overlapped along the axial direction of the battery, the diameter of the negative plate is greater than the aperture of the central hole of the insulating compression ring; a negative plate region corresponding to the central hole of the insulating compression ring is a negative external region; at least two pits are formed in the edge of the bottom of the zinc cylinder in the circumferential direction at intervals, and protrusions capable of being meshed with the pits in a one-to-one correspondence mode are arranged on the edge of the insulation pressing ring; the negative plate is positioned on the center side of all the bulges, and the inner side surface of each bulge is propped against the outer peripheral surface of the negative plate. According to the carbon battery disclosed by the utility model, the insulation compression ring and the negative plate can be radially limited, so that the negative plate and the insulation compression ring are prevented from radially moving in the assembly process, and the position of the negative electrode external connection area is kept unchanged before and after the heat shrinkage film is packaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery field especially relates to a carbon battery of preventing negative pole deviation. BACKGROUND

[0002] The carbon battery is full name: zinc-manganese dry battery, belongs to the primary cell in chemical power supply, is a kind of disposable battery.The carbon battery is relatively cheap, and is mainly used for low-power electrical appliances, such as clock, doorbell, remote controller, calculator, radio, etc.

[0003] ‌The positive active material of zinc-manganese dry battery is manganese dioxide, can be electrolytic manganese dioxide, natural manganese dioxide or chemical manganese dioxide, also contains some carbon materials for conducting electricity, such as one or several mixtures of acetylene black, graphite, graphene and carbon nanotube.The positive active material also includes a small amount of zinc oxide material for adjusting battery open voltage, inhibiting harmful metal impurities, etc.The positive electrolyte is the mixed aqueous solution of zinc chloride and ammonium chloride.The positive current collector is carbon rod.‌The negative active material of zinc-manganese dry battery is zinc material, and zinc cylinder is made of zinc material, which is not only negative active material, but also container, and also plays the role of negative current collector.Positive active substance and electrolyte are contained in zinc cylinder.In the opening at the top end of zinc cylinder, positive end cover and sealing ring are arranged, and the positive end cover is separated from the zinc cylinder by the sealing ring;the bottom end outer surface of zinc cylinder is attached with negative plate (in the form of round sheet) and insulating compression ring;the circumferential outer side of zinc cylinder is covered with heat shrinkage film and metal skin, the end of heat shrinkage film is covered on the insulating compression ring by heat shrinkage process, the end of metal skin is covered outside heat shrinkage film, and the center cavity of insulating compression ring corresponds to the negative plate area as the negative external connection part of battery for abutting with the negative pole of electrical appliance to realize power supply.But the existing carbon battery has the following problems in the assembly process:the diameter of the combined assembly of negative plate and insulating compression ring is equal to the diameter of zinc cylinder, after the combined assembly is placed on the end face of the closed end of zinc cylinder with the center axis coinciding with the center axis of zinc cylinder, the end of heat shrinkage film is heat shrunk, but the combined assembly often occurs radial deviation phenomenon (i.e. "negative deviation") during the heat shrinkage process of the end of heat shrinkage film, so that the center axis of the combined assembly and negative plate deviates from the center axis of the battery, so that the negative external connection part of the battery deviates from the center position of the battery end face, not only affects the quality of the battery, but also affects the normal docking and use of negative pole when the battery is installed in the battery compartment of electrical appliance. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a carbon battery of preventing negative pole deviation, which can avoid radial deviation of negative plate when packaging battery.

[0005] The technical scheme for realizing the purpose of the utility model is: a carbon battery preventing negative pole from deviating, which comprises zinc cylinders, negative poles and insulating compression rings which are sequentially stacked along the axial direction of the battery; the diameter of the negative pole is larger than the hole diameter of the central hole of the insulating compression ring, and the area of the negative pole corresponding to the central hole of the insulating compression ring is the negative pole circumscribed area; at least two pits are arranged at the bottom edge of the zinc cylinder along the circumferential direction of the zinc cylinder, and the edge of the insulating compression ring is provided with protrusions which can engage with the pits one by one; the negative pole is located at the center side of all the protrusions, and the inner side surface of each protrusion is in contact with the outer circumferential surface of the negative pole.

[0006] The carbon battery of the utility model realizes the radial limiting of the insulating compression ring through the engagement of the protrusions and the pits, and the negative pole is located at the center side of all the protrusions, and the inner side surface of each protrusion is in contact with the outer circumferential surface of the negative pole, so that the radial limiting of the negative pole can be realized through the protrusions, the radial movement of the negative pole and the insulating compression ring in the subsequent packaging process of the heat-shrinkable film can be avoided, the position of the negative pole circumscribed area remains unchanged before and after the packaging of the heat-shrinkable film, for example, the central axes of the zinc cylinder, the negative pole and the insulating compression ring are coincident in advance, and the central axis of the negative pole is coincident with the central axis of the zinc cylinder after the heat-shrinkable film is sleeved, so that the battery packaging quality and normal use are not affected.

[0007] Further, the pits are uniformly arranged.

[0008] Further, the protrusions are triangular, at this time, the pits are inverted triangular, and the protrusions can be quickly aligned when engaging with the corresponding pits.

[0009] Further, the negative pole circumscribed area is provided with a negative pole circumscribed boss which protrudes outward and is used for abutting against the negative pole of an electric appliance to realize power supply.

[0010] Further, the lower surface of the negative pole is provided with an insulating compression piece limiting embedding groove, and the insulating compression piece is embedded in the insulating compression piece limiting embedding groove, so that the positioning of the negative pole can be strengthened. When the insulating compression piece is embedded in the insulating compression piece limiting embedding groove, the central axis of the insulating compression piece is coincident with the central axis of the negative pole. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is an axial sectional structure schematic view of the carbon battery preventing negative pole from deviating of the utility model;

[0012] Fig. 2 It is a side view structure view of the zinc cylinder of the utility model;

[0013] Fig. 3 It is a side view structure view of the assembly structure of the zinc cylinder, the negative pole and the insulating compression ring of the utility model;

[0014] Fig. 4 The utility model discloses a bottom view of the carbon battery of preventing negative pole deviation. DETAILED DESCRIPTION

[0015] The utility model discloses a carbon battery of preventing negative pole deviation, including zinc cylinder 10, negative pole piece 20 and insulating press ring 30 who are overlaid in turn along the axial direction of battery, the diameter of negative pole piece 20 is greater than the aperture of the center hole 31 of insulating press ring 30, and the negative pole piece area corresponding to the center hole 31 of insulating press ring 30 is negative pole circumscribed area, at least two pits 11 are arranged along the circumferential direction of the bottom edge of zinc cylinder 10, and the edge of insulating press ring 30 is provided with the protrusion 32 that can engage with pit 11 one by one, and the negative pole piece 20 is located the center side of all protrusion 32, and the inner side surface of each protrusion 32 all are in contact with the outer circumferential surface of negative pole piece 20.

[0016] Combining Figs. 1-3 , a carbon battery of preventing negative pole deviation, including zinc cylinder 10, negative pole piece 20 and insulating press ring 30 who are overlaid in turn along the axial direction of battery, the diameter of negative pole piece 20 is greater than the aperture of the center hole 31 of insulating press ring 30, and the negative pole piece area corresponding to the center hole 31 of insulating press ring 30 is negative pole circumscribed area, at least two pits 11 are arranged along the circumferential direction of the bottom edge of zinc cylinder 10, and the edge of insulating press ring 30 is provided with the protrusion 32 that can engage with pit 11 one by one, and the negative pole piece 20 is located the center side of all protrusion 32, and the inner side surface of each protrusion 32 all are in contact with the outer circumferential surface of negative pole piece 20.

[0017] Before packaging, the assembly between zinc cylinder 10 and insulating press ring 30 is realized through the engagement of protrusion 32 and pit 11, and at the same time, the negative pole piece 20 is clamped between zinc cylinder 10 and insulating press ring 30, at this time, the center axes of zinc cylinder 10, negative pole piece 20 and insulating press ring 30 keep coinciding (that is, when pit 11 and protrusion 31 engage, the center axes of insulating press ring 30 and zinc cylinder 10 coincide), then heat shrink film and metal outer skin are packaged.

[0018] The carbon battery of the utility model can avoid the radial movement of negative pole piece 20 and insulating press ring 30 in the process of packaging heat shrink film, keep the negative pole circumscribed area unchanged before and after packaging heat shrink film, and will not affect the battery packaging quality and normal use.

[0019] Further, each pit 11 is uniformly arranged.

[0020] Further, the protrusion 32 is triangular, at this time, the pit 11 is inverted triangular, and the protrusion 32 and the corresponding pit 11 can be quickly aligned when engaging. Of course, the shape of the protrusion 32 can be but not limited to triangular, which can also be trapezoidal, square and other common shapes.

[0021] Further, the negative pole circumscribed area is provided with the negative pole piece circumscribed boss 21 that protrudes outward, which is used for abutting with the negative pole of the electric appliance to realize power supply. Of course, the negative pole piece 20 can also not be provided with the negative pole piece circumscribed boss 21.

[0022] Further, the lower surface of the negative plate 20 is provided with an insulating pressing plate limiting embedding groove 22, the insulating pressing plate 30 is embedded in the insulating pressing plate limiting embedding groove 22, and the positioning of the negative plate 20 can be enhanced by the insulating pressing plate limiting embedding groove 22. When the insulating pressing plate embedding 22 is embedded in the insulating pressing plate limiting embedding groove 22, the insulating pressing plate 30 coincides with the central axis of the negative plate 20. Of course, the insulating pressing plate limiting embedding groove 22 can also not be provided on the negative plate 20.

[0023] The negative plate 20 is usually made of stainless steel.

[0024] The insulating pressing ring 30 is usually made of plastic.

[0025] The negative plate external convex boss 21 and the insulating ring limiting embedding groove 22 on the negative plate 20 are both formed by stamping.

[0026] The concave pit 11 on the zinc cylinder 10 is also formed by stamping.

[0027] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent process transformation or direct or indirect application in other related technical fields by using the content of the present application is also included in the patent protection range of the present application.

Claims

1. A carbon battery preventing negative pole deviation, comprising a zinc cylinder, a negative pole sheet and an insulating press ring which are stacked in sequence along the axial direction of the battery; the diameter of the negative pole sheet is greater than the hole diameter of the central hole of the insulating press ring, and the area of the negative pole sheet corresponding to the central hole of the insulating press ring is the external area of the negative pole; characterized in that: At least two recesses are arranged at the bottom edge of the zinc cylinder along the circumference thereof, and the edge of the insulating press ring is provided with protrusions capable of engaging with the recesses one by one; the negative plate is located at the center side of all the protrusions, and the inner side of each protrusion is in contact with the outer circumferential surface of the negative plate.

2. The carbon cell to prevent negative electrode run-off according to claim 1, characterized by: The recesses are uniformly arranged.

3. The run-down prevention carbon battery according to claim 1, wherein: The protrusions are triangular, and the recesses are inverted triangular.

4. The run-down prevention carbon battery according to claim 1, wherein: The negative plate outer connection region is provided with an outward protruding negative plate outer connection boss.

5. The run-down prevention carbon battery according to claim 1, wherein: An insulating press plate limiting embedding groove is arranged on the lower surface of the negative plate, and the insulating press plate is embedded in the insulating press plate limiting embedding groove.

6. The carbon cell of claim 5, wherein: When the insulating press plate is embedded in the insulating press plate limiting embedding groove, the insulating press plate is coincident with the central axis of the negative plate.

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