Zinc-manganese battery

Abstract

The utility model discloses a zinc-manganese battery, which comprises a zinc shell, a positive electrode cap arranged at the upper end of the zinc shell, a carbon rod connected with the positive electrode cap, an electrolyte and isolation paper positioned between the electrolyte and the inner wall of the zinc shell arranged in the zinc shell, an opening at the upper end of the positive electrode cap is communicated with the zinc shell, and a copper sheet for sealing the opening is arranged at the opening of the positive electrode cap. An explosion-proof membrane is arranged in the positive electrode cap, the periphery of the explosion-proof membrane is hermetically connected with the inner wall of the positive electrode cap, the lower end of the positive electrode cap is connected with a conductive cap, through holes for gas to pass through are formed between the periphery of the conductive cap and the inner wall of the positive electrode cap, the lower end of the conductive cap arches upwards and is provided with a socket, the socket is matched with a carbon rod, and the upper end of the carbon rod is inserted into the socket. The side wall of the positive electrode cap is provided with a small hole communicated with the inner wall, the small hole is positioned above the explosion-proof membrane, and a valve core structure is arranged in the small hole, so that high voltage generated in the battery can be discharged, and battery explosion is avoided.

Description

Technical Field

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

[0002] Zinc-manganese battery is also called alkaline dry battery, alkaline zinc-manganese battery, alkaline manganese battery. It is the best performance variety in the zinc-manganese battery series. It is suitable for large discharge and long-term use. The battery internal resistance is low, so the current generated is larger than that of ordinary manganese batteries, and the environmentally friendly mercury content is only 0.025%, and no recycling is required. Alkaline battery is the most successful high-capacity dry battery and one of the most cost-effective batteries at present.

[0003] Usually, when zinc-manganese batteries are used improperly or are squeezed and deformed by pressure, collision, etc., a large amount of gas and high temperature will be generated inside. If the gas is not discharged in time, the gas pressure in the battery will easily increase and cause an explosion. Utility Model Content

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

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

[0006] A zinc-manganese battery comprises a zinc shell, wherein a positive electrode cap is provided at the upper end of the zinc shell, a carbon rod connected to the positive electrode cap, an electrolyte and a separator paper located between the electrolyte and the inner wall of the zinc shell are provided in the zinc shell, the upper end of the positive electrode cap is open and communicated with the zinc shell, a copper sheet with a sealed opening is provided at the opening of the positive electrode cap, an explosion-proof membrane is provided in the positive electrode cap, the periphery of the explosion-proof membrane is tightly connected to the inner wall of the positive electrode cap, a conductive cap is connected to the lower end of the positive electrode cap, a through hole for gas to pass through is provided between the periphery of the conductive cap and the inner wall of the positive electrode cap, the lower end of the conductive cap is arched upward and provided with a socket, the socket matches the carbon rod, the upper end of the carbon rod is inserted into the socket, a small hole connected to the inner wall is provided on the side wall of the positive electrode cap, the small hole is located above the explosion-proof membrane, and a valve core structure is provided in the small hole.

[0007] A preferred technical solution is that a circle of convex edges is arranged around the inner wall of the positive electrode cap, a pressure ring is arranged above the convex edge and is threadedly connected to the inner wall of the positive electrode cap, a S-shaped groove is arranged at the upper end of the pressure ring, the convex edge and the pressure ring are both arranged in a ring shape, and the surrounding edges of the explosion-proof membrane are clamped between the pressure ring and the convex edge.

[0008] According to a preferred technical solution, the edge of the opening at the upper end of the positive electrode cap is recessed inward to form a step, the copper sheet matches the opening, and the copper sheet is located in the opening and supported on the step.

[0009] According to a preferred technical solution, the upper end surface of the copper sheet is flush with the upper end of the positive electrode cap.

[0010] According to a preferred technical solution, a plurality of limiting protrusions are protruding from the four edges of the copper sheet, and limiting grooves matching the limiting protrusions one by one are matched at the opening of the positive electrode cap.

[0011] According to a preferred technical solution, the lower edge of the positive electrode cap extends outward to form a cap brim, and the upper edge of the zinc shell extends inward to form a closed edge attached to the upper end of the cap brim, and a sealing ring is sandwiched between the closed edge and the cap brim.

[0012] According to a preferred technical solution, the lower end of the conductive cap extends in all directions to form a connecting edge, the connecting edge is welded to the lower end of the positive electrode cap, and the connecting edge has a plurality of ventilation holes for ventilation.

[0013] Compared with the prior art, the beneficial effects are:

[0014] The utility model has a simple structure and is easy to use. When the pressure in the battery increases, the explosion-proof membrane will be squeezed to allow high-pressure gas to enter the positive electrode cap. When the pressure increases, the copper sheet on the positive electrode cap will be squeezed open to generate a gap between the copper sheet and the positive electrode cap, thereby exhausting and relieving pressure. The utility model can discharge the high pressure generated in the battery to avoid battery explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0016] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of part A;

[0017] Figure 3 It is a top view schematic diagram of the opening in the utility model;

[0018] Figure 4 It is a top view schematic diagram of the copper sheet in the utility model.

[0019] Figure numerals: 1. zinc shell; 2. positive electrode cap; 3. electrolyte; 4. isolation paper; 5. carbon rod; 6. closing edge; 7. cap edge; 8. sealing ring; 9. conductive cap; 10. connecting edge; 11. vent hole; 12. opening; 13. copper sheet; 14. step; 15. pressure ring; 16. explosion-proof membrane; 17. convex edge; 18. limiting groove; 19. limiting protrusion. DETAILED DESCRIPTION

[0020] 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.

[0021] A zinc-manganese battery, comprising a zinc shell 1, wherein a positive electrode cap 2 is disposed at the upper end of the zinc shell 1, and a carbon rod 5 connected to the positive electrode cap 2, an electrolyte 3, and a separator paper 4 located between the electrolyte 3 and the inner wall of the zinc shell 1 are disposed in the zinc shell 1;

[0022] The upper end opening 12 of the positive electrode cap 2 is connected to the zinc shell 1. A copper sheet 13 for sealing the opening 12 is provided at the opening 12 of the positive electrode cap 2. The copper sheet 13 is directly covered at the opening 12 without being fixed. An explosion-proof membrane 16 is provided inside the positive electrode cap 2. The explosion-proof membrane 16 adopts the existing technology. When the pressure on the explosion-proof membrane 16 reaches the critical value of the explosion-proof membrane 16, the explosion-proof membrane 16 ruptures. The explosion-proof membrane 16 is sealed and connected to the inner wall of the positive electrode cap 2 on all sides. The lower end of the positive electrode cap 2 is connected There is a conductive cap 9, which is electrically connected to the positive electrode cap 2. There are through holes for gas to pass through between the four sides of the conductive cap 9 and the inner wall of the positive electrode cap 2. The lower end of the conductive cap 9 is arched upward and provided with a socket, which matches the carbon rod 5. The upper end of the carbon rod 5 is inserted into the socket, and the carbon rod 5 is connected to the positive electrode cap 2 through the conductive cap 9. A small hole connected to the inner wall is opened on the side wall of the positive electrode cap 2, and the small hole is located above the explosion-proof membrane 16. A valve core structure is arranged in the small hole.

[0023] The air in the area between the explosion-proof membrane 16 and the copper sheet 13 in the positive electrode cap 2 is extracted through the valve core to form a vacuum portion, thereby pressing the copper sheet 13 tightly against the opening 12 of the positive electrode cap 2 .

[0024] When the pressure in the battery increases, the explosion-proof membrane 16 will be squeezed and the high-pressure gas will enter the positive cap 2. When the pressure increases, the copper sheet 13 on the positive cap 2 will be squeezed open, so that a gap will be generated between the copper sheet 13 and the positive cap 2, thereby exhausting and relieving pressure. The utility model can discharge the high pressure generated in the battery to avoid battery explosion.

[0025] A preferred technical solution is that a circle of convex edge 17 is arranged around the inner wall of the positive electrode cap 2, and a pressure ring 15 is arranged above the convex edge 17 and is threadedly connected to the inner wall of the positive electrode cap 2. A straight groove is provided at the upper end of the pressure ring 15, and the convex edge 17 and the pressure ring 15 are both arranged in a ring shape, and the surrounding edges of the explosion-proof membrane 16 are clamped between the pressure ring 15 and the convex edge 17.

[0026] The explosion-proof membrane 16 is supported on the upper end of the convex edge 17 around, and then the pressure ring 15 is screwed in, and the explosion-proof membrane 16 is pressed against the convex edge 17 by the pressure ring 15, and the pressure ring 15 can be rotated by inserting a flat screwdriver into the flat groove of the pressure ring 15.

[0027] According to a preferred technical solution, the edge of the opening 12 at the upper end of the positive electrode cap 2 is recessed inward to form a step 14 , and the copper sheet 13 matches the opening 12 . The copper sheet 13 is located in the opening 12 and supported on the step 14 .

[0028] According to a preferred technical solution, the upper end surface of the copper sheet 13 is flush with the upper end of the positive electrode cap 2 .

[0029] The upper end of the copper sheet 13 is prevented from protruding, so that the copper sheet 13 is easily squeezed out of the opening 12 by scratches or the like.

[0030] According to a preferred technical solution, a plurality of limiting protrusions 19 are protruded from the four edges of the copper sheet 13 , and limiting grooves 18 that match the limiting protrusions 19 are matched at the opening 12 of the positive electrode cap 2 .

[0031] The limiting protrusion 19 is inserted into the limiting groove 18 to prevent the copper sheet 13 from rotating in the opening 12 .

[0032] According to a preferred technical solution, the lower edge of the positive electrode cap 2 extends outward to form a cap brim 7, and the upper edge of the zinc shell extends inward to form a closed edge 6 attached to the upper end of the cap brim 7, and a sealing ring 8 is sandwiched between the closed edge 6 and the cap brim 7.

[0033] According to a preferred technical solution, the lower end of the conductive cap 9 extends in all directions to form a connecting edge 10, which is welded to the lower end of the positive electrode cap 2. The connecting edge 10 has a plurality of ventilation holes 11 for ventilation, and the interior of the zinc shell 1 is connected with the interior of the positive electrode cap 2 through the ventilation holes 11.

[0034] 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.

[0035] 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.

[0036] 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 zinc-manganese battery, characterized in that: The invention comprises a zinc shell (1), wherein a positive electrode cap (2) is provided at the upper end of the zinc shell (1), wherein a carbon rod (5) connected to the positive electrode cap (2), an electrolyte (3) and a separation paper (4) located between the electrolyte (3) and the inner wall of the zinc shell (1) are provided in the zinc shell (1), wherein the upper end of the positive electrode cap (2) is opened (12) and is connected to the zinc shell (1), wherein a copper sheet (13) for sealing the opening (12) is provided at the opening (12) of the positive electrode cap (2), wherein an explosion-proof membrane (16) is provided in the positive electrode cap (2), wherein the explosion-proof membrane (16) is provided with a The positive electrode cap (2) is sealedly connected to the inner wall of the positive electrode cap (2) on all sides, and the lower end of the positive electrode cap (2) is connected to a conductive cap (9). There are through holes for gas to pass through between the inner wall of the positive electrode cap (2) and the surrounding of the conductive cap (9). The lower end of the conductive cap (9) is arched upward and provided with a socket, which matches the carbon rod (5). The upper end of the carbon rod (5) is inserted into the socket. A small hole connected to the inner wall is opened on the side wall of the positive electrode cap (2), and the small hole is located above the explosion-proof membrane (16). A valve core structure is arranged in the small hole.

2. The zinc-manganese battery according to claim 1, characterized in that: A convex edge (17) is arranged around the inner wall of the positive electrode cap (2), a pressure ring (15) is arranged above the convex edge (17) and is threadedly connected to the inner wall of the positive electrode cap (2), a slot is arranged at the upper end of the pressure ring (15), the convex edge (17) and the pressure ring (15) are both arranged in a ring shape, and the edges around the explosion-proof membrane (16) are clamped between the pressure ring (15) and the convex edge (17).

3. The zinc-manganese battery according to claim 1, characterized in that: The edge of the opening (12) at the upper end of the positive electrode cap (2) is recessed inward to form a step (14); the copper sheet (13) matches the opening (12); the copper sheet (13) is located in the opening (12) and supported on the step (14).

4. The zinc-manganese battery according to claim 3, characterized in that: The upper end surface of the copper sheet (13) is flush with the upper end of the positive electrode cap (2).

5. The zinc-manganese battery according to claim 3, characterized in that: A plurality of limiting protrusions (19) are protruding from the four edges of the copper sheet (13), and limiting grooves (18) that match the limiting protrusions (19) are matched at the opening (12) of the positive electrode cap (2).

6. The zinc-manganese battery according to claim 1, characterized in that: The lower edge of the positive electrode cap (2) extends outward to form a cap edge (7), and the upper edge of the zinc shell extends inward to form a closed edge (6) attached to the upper end of the cap edge (7), and a sealing ring (8) is sandwiched between the closed edge (6) and the cap edge (7).

7. The zinc-manganese battery according to claim 1, characterized in that: The lower end of the conductive cap (9) extends in all directions to form a connecting edge (10), the connecting edge (10) is welded to the lower end of the positive electrode cap (2), and the connecting edge (10) has a plurality of ventilation holes (11) for ventilation.

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