Negative electrode bus structure and aluminum-air battery

Abstract

The utility model provides a kind of negative pole confluence structure and aluminum air cell, negative pole confluence structure includes negative pole aluminum plate, insulating cover, confluence row and electric connecting piece, insulating cover is equipped with first through-hole, confluence row is attached to the upper surface of insulating cover, electric connecting piece is made of integrally formed metal stick and long strip connecting piece, metal stick passes through corresponding first through-hole and is connected with confluence row by first detachable fastener, connecting piece is connected with negative pole aluminum plate by second detachable fastener.The structure, electric connecting piece is integrated multi-purpose, both as the conductor of current output, also as the component of mechanically fixed negative pole aluminum plate, save external fixed structure, reduce the number of parts and mold expense, shorten assembly rhythm synchronously, realize cost reduction and efficiency increase.In addition, electric connecting piece, negative pole aluminum plate are all detachably connected, component can be individually replaced when damaged, avoid overall replacement, reduce maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of aluminum-air battery technology, and more specifically, relates to a negative electrode busbar structure and an aluminum-air battery. Background Technology

[0002] Aluminum-air batteries have broad application prospects in energy storage, emergency power supplies, and other fields due to their high energy density and environmental friendliness. The negative electrode current collector structure is a core component of aluminum-air batteries, and its performance directly affects the battery's current output efficiency, manufacturing cost, and ease of maintenance.

[0003] The existing negative electrode busbar structure of aluminum-air batteries has the following technical problems: Electrical connectors and plastic covers are often manufactured using a one-piece molding process. When either the electrical connector or the plastic cover is damaged, the entire component must be replaced, which significantly increases the replacement cost. Electrical connectors only carry current, and the negative aluminum plate requires an additional independent fixing structure (such as a special bracket or buckle), which increases the number of parts, increases material costs, and prolongs the assembly cycle. The single-output structure design means that only one electrochemical reaction unit can be formed in a single physical unit, resulting in low space utilization and limited overall energy density of the battery in the same volume. Electrical connectors are prone to rotation during assembly, which makes it difficult to align the negative electrode aluminum plate and affects assembly efficiency. This problem is particularly prominent in mass production scenarios.

[0004] Therefore, there is an urgent need to design an aluminum-air battery negative electrode busbar structure that combines low cost, high assembly efficiency, and high energy density to address the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this invention is to provide a negative electrode busbar structure and an aluminum-air battery, which solves the problems of high replacement cost, large number of parts, low assembly efficiency, and limited energy density of the negative electrode busbar structure.

[0006] To achieve the above objectives, in a first aspect, this utility model provides a negative electrode busbar structure applied to an aluminum-air battery, comprising: At least one negative electrode aluminum plate; The insulating cover plate has at least two first through holes; At least one busbar is attached to the upper surface of the insulating cover plate; At least two electrical connectors, each consisting of an integrally formed metal rod and a long strip connecting piece, the metal rod passing through a corresponding first through hole and connected to the busbar via a first detachable fastener, and the connecting piece being connected to the negative electrode aluminum plate via a second detachable fastener.

[0007] Optionally, the cross-section of the metal rod is polygonal; A metal insert is fixedly disposed within the first through hole, the metal insert having a polygonal inner hole that matches the metal rod.

[0008] Optionally, the cross-section of the metal rod is hexagonal.

[0009] Optionally, the electrical connector is a polygonal copper rod that has been cold-formed into a single piece.

[0010] Optionally, the upper end of the metal rod is provided with a pair of limiting pins, and the busbar is provided with limiting holes corresponding to the limiting pins, and the limiting pins are inserted into the limiting holes.

[0011] Optionally, the first detachable fastener is a first bolt; A first threaded hole is formed on the upper end face of the metal rod; The busbar is provided with a second through hole; The first bolt passes through the second through hole and is screwed into the first threaded hole.

[0012] Optionally, the second detachable fastener is a second bolt, the connecting piece is provided with a second threaded hole, the negative electrode aluminum plate is provided with a third through hole, and the second bolt passes through the third through hole and is screwed into the second threaded hole.

[0013] Optionally, the lower surface of the busbar is provided with a positioning protrusion in the middle, and the upper part of the insulating cover is provided with a positioning groove, and the positioning protrusion is inserted into the positioning groove.

[0014] Optionally, the negative electrode aluminum plate is provided in two, the insulating cover plate is provided in four first through holes, the busbar is provided in two, and the electrical connector is provided in four. The negative electrode aluminum plate, the insulating cover plate, the busbar, and the electrical connector together constitute two independent negative electrode units.

[0015] Secondly, this utility model provides an aluminum-air battery, characterized in that... This includes the negative electrode busbar structure described in the first aspect.

[0016] The beneficial effects of this utility model are as follows: It provides a negative electrode busbar structure for aluminum-air batteries, including a negative electrode aluminum plate, an insulating cover plate, a busbar, and an electrical connector. The insulating cover plate has a first through hole, and the busbar is attached to the upper surface of the insulating cover plate. The electrical connector consists of an integrally formed metal rod and a long strip connecting piece. The metal rod passes through the corresponding first through hole and is connected to the busbar through a first detachable fastener. The connecting piece is connected to the negative electrode aluminum plate through a second detachable fastener. In this structure, the electrical connector serves multiple purposes, acting as both a current output conductor and a component for mechanically fixing the negative electrode aluminum plate. This eliminates the need for an external fixing structure, reduces the number of parts and mold costs, and simultaneously shortens the assembly cycle, achieving cost reduction and efficiency improvement. In addition, both the electrical connector and the negative electrode aluminum plate are detachably connected, allowing for individual replacement of damaged components, avoiding overall replacement and reducing maintenance costs.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0019] Figure 1 A schematic structural diagram of a negative electrode busbar structure according to an embodiment of the present invention is shown.

[0020] Figure 2 An exploded view of a negative electrode busbar structure according to an embodiment of the present invention is shown.

[0021] Figure 3 A schematic structural diagram of a bus and electrical connector according to an embodiment of the present invention is shown.

[0022] Explanation of reference numerals in the attached figures: 1. Negative electrode aluminum plate; 11. Third through hole; 2. Insulating cover plate; 21. First through hole; 22. Positioning groove; 3. Busbar; 31. Second through hole; 32. Positioning protrusion; 33. Limiting hole; 4. Electrical connector; 41. Metal rod; 41a. First threaded hole; 41b. Limit pin; 42. Connecting piece; 42a. Second threaded hole; 5. First detachable fastener; 6. Second detachable fastener. Detailed Implementation

[0023] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0024] like Figure 1-3 As shown, this embodiment provides a negative electrode busbar structure applied to an aluminum-air battery, comprising: At least one negative electrode aluminum plate 1; Insulating cover plate 2 is provided with at least two first through holes 21; At least one busbar 3 is attached to the upper surface of the insulating cover plate 2; At least two electrical connectors 4, each electrical connector 4 consisting of an integrally formed metal rod 41 and a long strip connecting piece 42. The metal rod 41 passes through the corresponding first through hole 21 and is connected to the busbar 3 through the first detachable fastener 5. The connecting piece 42 is connected to the negative electrode aluminum plate 1 through the second detachable fastener 6.

[0025] Specifically, in this structure, the electrical connector 4 serves multiple purposes, acting as both a conductor for current output and a component for mechanically fixing the negative electrode aluminum plate 1. This eliminates the need for an external fixing structure, reduces the number of parts and mold costs, and simultaneously shortens the assembly cycle, achieving cost reduction and efficiency improvement. Furthermore, both the electrical connector 4 and the negative electrode aluminum plate 1 are detachable, allowing for individual replacement of damaged components, avoiding the need for complete replacement and reducing maintenance costs.

[0026] Optionally, the cross-section of the metal rod 41 is polygonal; A metal insert is fixedly provided inside the first through hole 21. The metal insert has a polygonal inner hole that matches the metal rod 41.

[0027] Specifically, the metal rod 41 and the first through hole 21 prevent rotation through a surface fit, resulting in high torque bearing capacity. This completely solves the assembly difficulties caused by the rotation of the connecting piece 42 during bolt tightening. The metal insert can be pre-embedded in injection molding, making it suitable for high-speed mass production and reducing costs. The metal insert also enhances the local strength of the insulating cover plate 2, adapting to the needs of large-scale mass production.

[0028] Optionally, the cross-section of the metal rod 41 is hexagonal.

[0029] Specifically, hexagonal shapes are standard industrial rods that can be directly processed without special molds, making the processing simple and saving processing costs compared to customized one-piece molded parts.

[0030] In this embodiment, the electrical connector 4 is a polygonal copper rod that has been cold-worked into one piece.

[0031] Optionally, a pair of limiting pins 41b protrudes from the upper end of the metal rod 41, and the busbar 3 is provided with limiting holes 33 corresponding to the limiting pins 41b, and the limiting pins 41b are inserted into the limiting holes 33.

[0032] Specifically, the limiting pin 41b is inserted into the limiting hole 33 to form a rotation lock, which can effectively limit the rotation of the electrical connector 4. It has a simple structure, is flexible in modification, and is suitable for small-batch trial production.

[0033] In this embodiment, the first detachable fastener 5 is a first bolt; the upper end face of the metal rod 41 has a first threaded hole 41a; the busbar 3 is provided with a second through hole 31; the first bolt passes through the second through hole 31 and is screwed into the first threaded hole 41a.

[0034] The second detachable fastener 6 is the second bolt. The connecting piece 42 is provided with a second threaded hole 42a. The negative electrode aluminum plate 1 is provided with a third through hole 11. The second bolt passes through the third through hole 11 and is screwed into the second threaded hole 42a.

[0035] Optionally, a positioning protrusion 32 is provided in the middle of the lower surface of the busbar 3, and a positioning groove 22 is provided on the upper part of the insulating cover plate 2, with the positioning protrusion 32 inserted into the positioning groove 22.

[0036] Specifically, the positioning protrusion 32 cooperates with the positioning groove 22, allowing the busbar 3 to automatically align during assembly, eliminating the need for tooling fixtures, saving costs, and improving assembly efficiency. It also reduces lateral displacement under vibration, preventing bolt failure due to shear force and improving reliability.

[0037] Optionally, the negative electrode aluminum plate 1 is provided with two, the insulating cover plate 2 is provided with four first through holes 21, the busbar 3 is provided with two, and the electrical connector 4 is provided with four.

[0038] The negative electrode aluminum plate 1, the insulating cover plate 2, the busbar 3, and the electrical connector 4 together constitute two independent negative electrode units.

[0039] Specifically, two independent negative electrode units are used to couple with two independent positive electrode chambers below, forming a dual-cell parallel structure. The dual-cell parallel structure forms two independent electrochemical reaction circuits within the same volume, which greatly improves space utilization and component sharing, thereby significantly increasing the overall energy density of the battery within the same volume.

[0040] This embodiment also provides an aluminum-air battery, including the negative electrode busbar structure of this embodiment.

[0041] Specifically, the battery's electrical connector 4 is made from a modified polygonal copper rod, which is simple to process and reduces processing costs compared to customized one-piece molded parts. Electrical connector 4 integrates conductive and fixing functions, eliminating the need for a separate fixing structure, reducing the number of parts, significantly lowering material costs and mold expenses, and simplifying the assembly process; Electrical connector 4 and negative electrode aluminum plate 1 are both connected by bolts for easy removal. When a component is damaged, it can be replaced individually, avoiding the need to replace the whole component and reducing maintenance costs.

[0042] The symmetrical dual-output structure constructs two independent electrochemical reaction units in the same volume, improving space utilization and significantly increasing the overall energy density of the battery, making it suitable for high-capacity demand scenarios.

[0043] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A negative electrode busbar structure, applied to an aluminum-air battery, characterized in that, include: At least one negative electrode aluminum plate (1); The insulating cover plate (2) is provided with at least two first through holes (21); At least one busbar (3) is attached to the upper surface of the insulating cover plate (2); At least two electrical connectors (4), each electrical connector (4) consists of an integrally formed metal rod (41) and a strip-shaped connecting piece (42), the metal rod (41) passes through the corresponding first through hole (21) and is connected to the busbar (3) through a first detachable fastener (5), and the connecting piece (42) is connected to the negative electrode aluminum plate (1) through a second detachable fastener (6).

2. The negative electrode busbar structure according to claim 1, characterized in that, The cross-section of the metal rod (41) is polygonal; A metal insert is fixedly provided in the first through hole (21), the metal insert having a polygonal inner hole that matches the metal rod (41).

3. The negative electrode busbar structure according to claim 2, characterized in that, The cross-section of the metal rod (41) is hexagonal.

4. The negative electrode busbar structure according to claim 2 or 3, characterized in that, The electrical connector (4) is a polygonal copper rod that has been cold-worked into one piece.

5. The negative electrode busbar structure according to claim 1, characterized in that, The metal rod (41) has a pair of limiting pins (41b) protruding from its upper end. The busbar (3) has a limiting hole (33) corresponding to the limiting pins (41b). The limiting pins (41b) are inserted into the limiting hole (33).

6. The negative electrode busbar structure according to claim 1, characterized in that, The first detachable fastener (5) is the first bolt; The metal rod (41) has a first threaded hole (41a) on its upper end face. The busbar (3) is provided with a second through hole (31); The first bolt passes through the second through hole (31) and is screwed into the first threaded hole (41a).

7. The negative electrode busbar structure according to claim 1, characterized in that, The second detachable fastener (6) is a second bolt. The connecting piece (42) is provided with a second threaded hole (42a). The negative electrode aluminum plate (1) is provided with a third through hole (11). The second bolt passes through the third through hole (11) and is screwed into the second threaded hole (42a).

8. The negative electrode busbar structure according to claim 1, characterized in that, The busbar (3) has a positioning protrusion (32) in the middle of its lower surface, and the insulating cover plate (2) has a positioning groove (22) on its upper part. The positioning protrusion (32) is inserted into the positioning groove (22).

9. The negative electrode busbar structure according to claim 1, characterized in that, The negative electrode aluminum plate (1) is provided in two, the insulating cover plate (2) is provided in four first through holes (21), the busbar (3) is provided in two, and the electrical connector (4) is provided in four; The negative electrode aluminum plate (1), the insulating cover plate (2), the busbar (3) and the electrical connector (4) together constitute two independent negative electrode units.

10. An aluminum-air battery, characterized in that, Includes the negative electrode busbar structure as described in any one of claims 1-9.

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