Leakage-proof zinc-manganese battery

Abstract

The utility model discloses an anti-leakage zinc-manganese battery which comprises a zinc shell, a positive electrode cap connected to the upper end of the zinc shell, a carbon rod arranged in the zinc shell and connected with the positive electrode cap, electrolyte filled in the zinc shell and isolation paper arranged between the electrolyte and the inner wall of the zinc shell, the lower end of the positive electrode cap extends towards the periphery and is provided with a cap edge, the upper end of the zinc shell extends inwards and is provided with an attaching edge attached to the upper end of the cap edge, a sealing ring is clamped between the attaching edge and the cap edge, a separator pressing electrolyte is arranged in the zinc shell, the center of the separator is provided with a through hole allowing a carbon rod to penetrate through, and a gap between the interior of the through hole and the carbon rod is filled with sealant. The edge of the isolation piece is attached to the inner wall of the zinc shell, the peripheral edge of the brim abuts against the inner wall of the zinc shell, the peripheral edge of the brim is connected with at least two elastic pieces which extend downwards and are continuously bent, and the lower ends of the elastic pieces abut against the upper end of the isolation piece. And liquid in the battery is prevented from flowing out.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a leakage-proof zinc-manganese battery. Background Art

[0002] The common structure of zinc-manganese battery is usually a steel shell with a sealed bottom and an open top. The steel shell is filled with electrolyte solution, carbon rods and isolation paper, and then the positive electrode cap is installed at the opening on the top of the steel shell. Therefore, the connection of the whole battery lies in the connection between the bottom of the steel shell and the positive electrode cap. Usually, the bottom of the positive electrode cap extends outward to form a cap brim, and then the upper end of the steel shell extends inward to form a covering brim, which is pressed tightly against the upper end of the cap brim, and a sealing ring is set between the covering brim and the cap brim for sealing.

[0003] However, in the above method, after the battery is produced, there is no pressure between the covering edge and the cap edge, so after the sealing ring sandwiched therebetween ages, the sealing performance between the covering edge and the cap edge will decrease, increasing the risk of battery leakage. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a leakage-proof zinc-manganese battery.

[0005] In order to achieve the above technical effects, the utility model adopts the following scheme:

[0006] A leakproof zinc-manganese battery comprises a zinc shell, a positive electrode cap connected to the upper end of the zinc shell, a carbon rod arranged in the zinc shell and connected to the positive electrode cap, an electrolyte filled in the zinc shell, and a separator paper arranged between the electrolyte and the inner wall of the zinc shell; the lower end of the positive electrode cap is provided with a cap brim extending in all directions, the upper end of the zinc shell is provided with a covering brim extending inwardly and covering the upper end of the cap brim, a sealing ring is sandwiched between the covering brim and the cap brim, a separator for pressing the electrolyte is provided in the zinc shell, the center of the separator has a through hole for the carbon rod to pass through, the gap between the through hole and the carbon rod is filled with sealant, the edge of the separator is in contact with the inner wall of the zinc shell, the four peripheral edges of the cap brim abut against the inner wall of the zinc shell, the four peripheral edges of the cap brim are connected to at least two elastic sheets extending downward and continuously bent, and the lower end of the elastic sheet abuts against the upper end of the separator.

[0007] According to a preferred technical solution, the connection between the brim and the elastic sheet is arranged in an arc transition.

[0008] According to a preferred technical solution, an inner shell with an opening facing upward is provided inside the zinc shell, the outer wall of the inner shell is in contact with the inner wall of the zinc shell, the electrolyte is filled in the inner shell, and the separator is pressed against the upper end of the inner shell to seal the electrolyte in the inner shell.

[0009] According to a preferred technical solution, the lower end of the inner shell is arched upward to form a slot, a vertical conductive spring is provided in the slot, and the upper and lower ends of the conductive spring are respectively connected to the top of the slot and the bottom of the zinc shell.

[0010] According to a preferred technical solution, a first nickel-cobalt coating is disposed on the inner wall of the zinc shell, and a second nickel-cobalt coating is disposed on the outer wall of the zinc shell.

[0011] Compared with the prior art, the beneficial effects are:

[0012] The utility model has a simple structure and is easy to use. The elastic sheet at the lower end of the cap brim is pressed against the isolation piece below, so that the elastic sheet has upward elasticity, so that the cap brim is pressed against the covering brim at the upper end of the shell, so that the covering brim and the cap brim clamp the sealing ring, which greatly improves the sealing between the covering brim and the cap brim. The utility model improves the sealing of the connection between the positive electrode cap and the upper end of the zinc shell, and prevents the liquid in the battery from flowing out. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional schematic diagram of the utility model.

[0014] Figure numerals: 1, zinc shell; 2, positive electrode cap; 3, electrolyte; 4, carbon rod; 5, isolation paper; 6, covering edge; 7, cap edge; 8, sealing ring; 9, elastic sheet; 10, inner shell; 11, slot; 12, conductive spring. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] A leakproof zinc-manganese battery, comprising a zinc shell 1, a positive electrode cap 2 connected to the upper end of the zinc shell 1, a carbon rod 4 arranged in the zinc shell 1 and connected to the positive electrode cap 2, an electrolyte 3 filled in the zinc shell 1, and a separation paper 5 arranged between the electrolyte 3 and the inner wall of the zinc shell 1; the lower end of the positive electrode cap 2 is provided with a cap brim 7 extending in all directions, the upper end of the zinc shell 1 is provided with a covering brim 6 extending inwardly and covering the upper end of the cap brim 7, a sealing ring 8 is sandwiched between the covering brim 6 and the cap brim 7, and the zinc shell 1 is provided with a sealing ring 8. The separator presses the electrolyte 3, and the separator is made of plastic. The center of the separator has a through hole for the carbon rod 4 to pass through. The gap between the through hole and the carbon rod 4 is filled with sealant. The edge of the separator is in contact with the inner wall of the zinc shell 1, and the four edges of the brim 7 are against the inner wall of the zinc shell 1. The four edges of the brim 7 are connected with at least two continuously bent elastic sheets 9 extending downward. The elastic sheet 9 is elastic, and the lower end of the elastic sheet 9 is against the upper end of the separator.

[0017] The elastic sheet 9 at the lower end of the brim 7 is pressed against the insulating member below, so that the elastic sheet 9 has upward elasticity, so that the brim 7 is pressed against the covering brim 6 at the upper end of the shell, so that the covering brim 6 and the brim 7 clamp the sealing ring 8, which greatly improves the sealing between the covering brim 6 and the brim 7. The utility model improves the sealing of the connection between the positive electrode cap 2 and the upper end of the zinc shell 1, and prevents the liquid in the battery from flowing out.

[0018] According to a preferred technical solution, the connection between the brim 7 and the elastic sheet 9 is arranged in an arc transition.

[0019] The edges and corners at the connection between the surface elastic sheet 9 and the brim 7 scratch the inner wall of the zinc shell 1 .

[0020] A preferred technical solution is that an inner shell 10 with an opening facing upward is provided in the zinc shell 1, the inner shell 10 is made of zinc, the outer wall of the inner shell 10 is in contact with the inner wall of the zinc shell 1, the electrolyte 3 is filled in the inner shell 10, the isolation paper 5 is located between the electrolyte 3 and the inner wall of the inner shell 10, and the isolation member is pressed against the upper end of the inner shell 10 to seal the electrolyte 3 in the inner shell 10.

[0021] The upper end of the inner shell 10 provides support for the isolating member, so that the isolating member can be installed in the zinc shell 1 easily.

[0022] According to a preferred technical solution, the lower end of the inner shell 10 is arched upward to form a slot 11, and a vertical conductive spring 12 is provided in the slot 11. The upper and lower ends of the conductive spring 12 are respectively connected to the top of the slot 11 and the bottom of the zinc shell 1.

[0023] Due to the elasticity of the conductive spring 12, the upper and lower ends of the conductive spring 12 can always press against the upper end of the slot 11 and the bottom of the zinc shell 1, and then the conductive spring 12 is used to make an electrical connection between the two, thereby avoiding poor conductivity between the inner shell 10 and the zinc shell 1.

[0024] According to a preferred technical solution, a first nickel-cobalt coating is disposed on the inner wall of the zinc shell 1 , and a second nickel-cobalt coating is disposed on the outer wall of the zinc shell 1 .

[0025] In the description of the present utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present utility model.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A leakproof zinc-manganese battery, characterized in that: The invention comprises a zinc shell (1), a positive electrode cap (2) connected to the upper end of the zinc shell (1), a carbon rod (4) arranged in the zinc shell (1) and connected to the positive electrode cap (2), an electrolyte (3) filled in the zinc shell (1), and a separation paper (5) arranged between the electrolyte (3) and the inner wall of the zinc shell (1); the lower end of the positive electrode cap (2) is provided with a cap edge (7) extending in all directions, the upper end of the zinc shell (1) is provided with a covering edge (6) extending inwardly and covering the upper end of the cap edge (7), and a sealing member is sandwiched between the covering edge (6) and the cap edge (7). A sealing ring (8), wherein a separator for pressing the electrolyte (3) is arranged in the zinc shell (1), the center of the separator has a through hole for the carbon rod (4) to pass through, the gap between the through hole and the carbon rod (4) is filled with sealant, the edge of the separator is in contact with the inner wall of the zinc shell (1), the four peripheral edges of the brim (7) are against the inner wall of the zinc shell (1), the four peripheral edges of the brim (7) are connected to at least two continuously bent elastic sheets (9) extending downward, and the lower end of the elastic sheet (9) is against the upper end of the separator.

2. The leakproof zinc-manganese battery according to claim 1, characterized in that: The connection between the brim (7) and the elastic sheet (9) is arranged in an arc transition.

3. The leakproof zinc-manganese battery according to claim 1, characterized in that: An inner shell (10) with an opening facing upward is arranged inside the zinc shell (1), the outer wall of the inner shell (10) is in contact with the inner wall of the zinc shell (1), the electrolyte (3) is filled in the inner shell (10), and the separator is pressed against the upper end of the inner shell (10) to seal the electrolyte (3) in the inner shell (10).

4. The leakproof zinc-manganese battery according to claim 3, characterized in that: The lower end of the inner shell (10) is arched upward and is provided with a slot (11), a vertical conductive spring (12) is provided in the slot (11), and the upper and lower ends of the conductive spring (12) are respectively connected to the top of the slot (11) and the bottom of the zinc shell (1).

5. The leakproof zinc-manganese battery according to claim 1, characterized in that: A first nickel-cobalt coating is provided on the inner wall of the zinc shell (1), and a second nickel-cobalt coating is provided on the outer wall of the zinc shell (1).

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