Battery end cover connecting structure

Abstract

The utility model discloses a battery end cover connecting structure, and particularly relates to the technical field of end cover connection, the battery end cover connecting structure comprises a fixed plate I, a fixed plate II and an end cover main body used for connecting two ends of a battery shell, and a plurality of uniformly distributed connecting plates I are fixedly arranged on one side, close to the battery shell, of the fixed plate I; a second connecting plate corresponding to the first connecting plate is fixedly arranged on the side, close to the battery shell, of the second fixing plate, the first connecting plate and the second connecting plate are detachably fixed together, and annular grooves matched with the end cover body are formed in the sides, close to each other, of the first fixing plate and the second fixing plate. The fixing plate I and the fixing plate II are connected and fixed through the connecting plate I and the connecting plate II, the two end cover main bodies and the battery shell can be firmly fixed together by virtue of the matching of the fixing plate I and the fixing plate II, and when the end cover main bodies need to be replaced, only fastening bolts between the connecting plate I and the connecting plate II need to be loosened; the structure is simple, and replacement is very fast.

Description

Technical Field

[0001] This utility model relates to the field of end cap connection technology, and more specifically to a battery end cap connection structure. Background Technology

[0002] A battery is a device that converts chemical energy, physical energy, etc., into electrical energy, and it is widely used in modern society. A battery generally consists of a positive electrode, a negative electrode, an electrolyte, and a separator. Inside the battery, a potential difference is created between the positive and negative electrodes through chemical reactions or other physical processes, driving electrons to flow from the negative electrode to the positive electrode, forming an electric current, and thus outputting electrical energy. Existing battery end caps are typically fixed by welding. This involves applying pressure between the end cap and the outer casing and passing an electric current through it. The heat generated by the current passing through the contact resistance melts the material, achieving the connection. Its advantages include relatively simple equipment, low cost, and high welding efficiency.

[0003] For example, the prior art disclosure number CN220155631U describes a cylindrical battery end cap sealing connection structure. This utility model uses resistance welding or laser welding for electrical connection, which provides more manufacturing space, facilitates production, and thus improves production efficiency.

[0004] However, the existing technology has the following problems: the battery end cap will oxidize during long-term use, leading to poor contact and other issues. In this case, the end cap needs to be disassembled for inspection and replacement. However, the welding method makes it impossible to replace the end cap; it can only be separated by cutting the components, which not only increases inspection time but also maintenance costs. Therefore, this utility model provides a battery end cap connection structure that is simple in construction and easy to disassemble and replace. Utility Model Content

[0005] To overcome the aforementioned deficiencies in the prior art, this utility model provides a battery end cap connection structure. A first connecting plate and a second connecting plate connect and fix a first fixing plate and a second fixing plate. With the cooperation of the first fixing plate and the second fixing plate, the two end cap bodies can be firmly fixed together with the battery casing. When the end cap body needs to be replaced, it is only necessary to loosen the fastening bolts between the first connecting plate and the second connecting plate. The structure is simple and the replacement is very quick, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a battery end cap connection structure, including a fixing plate one and a fixing plate two, for connecting the end cap bodies at both ends of the battery casing. The fixing plate one is fixed with a plurality of evenly distributed connecting plates one on the side near the battery casing. The fixing plate two is fixed with a connecting plate two corresponding to the connecting plates one on the side near the battery casing. The connecting plates one and two are detachably fixed together. The fixing plates one and two are each machined with an annular groove adapted to the end cap body on the side near each other. The end cap body is inserted into the annular groove.

[0007] In a preferred embodiment, multiple positioning rods arranged in a circular array are fixedly provided on the inner walls of the two annular grooves. Positioning holes adapted to the positioning rods are machined on the outer walls of the two end cap bodies on opposite sides. The positioning rods are inserted into the positioning holes. By using the positioning rods and positioning holes to cooperate, the assembly personnel can quickly put the fixing plate one and fixing plate two onto the end cap bodies, thereby improving the connection efficiency.

[0008] In a preferred embodiment, each connecting plate 1 has mounting holes machined on its outer wall, and fastening bolts are provided in the mounting holes. The connecting plate 1 is detachably fixed to the connecting plate 2 by means of fastening bolts. Compared with the spring snap-fit ​​method, the fastening bolts provide higher stability for fixing the connecting plate 1 and the connecting plate 2.

[0009] In a preferred embodiment, a dust plug is inserted into each mounting hole. The dust plug is fitted over the outside of the fastening bolt. The dust plug can seal the mounting hole, which can improve the aesthetics and prevent dust and debris from clogging the mounting hole and affecting the disassembly of the fastening bolt.

[0010] In a preferred embodiment, each connecting plate 1 and each connecting plate 2 have multiple equally spaced ventilation holes on their outer walls. The arrangement of multiple ventilation holes can reduce the impact of connecting plate 1 and connecting plate 2 on the heat dissipation of the battery casing to a certain extent.

[0011] In a preferred embodiment, both end cap bodies are fixedly provided with a plurality of arc-shaped positioning plates arranged in a circular array on the side near the battery casing. Both ends of the battery casing are machined with arc-shaped positioning grooves in the same number as the arc-shaped positioning plates. The arc-shaped positioning plates help assemblers to quickly and accurately install the end cap bodies onto the battery casing.

[0012] In a preferred embodiment, a rubber sealing ring is provided between the two end cap bodies and the battery casing to fill the gap between them. After being squeezed by the first fixing plate and the second fixing plate, the rubber sealing ring can greatly improve the sealing performance of the connection between the end cap body and the battery casing.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model connects and fixes the first and second fixing plates by connecting plate one and connecting plate two. With the cooperation of fixing plate one and fixing plate two, the two end cover bodies can be firmly fixed to the battery shell. When the end cover body needs to be replaced, simply loosen the fastening bolts between connecting plate one and connecting plate two. The structure is simple and the replacement is very quick.

[0015] 2. The positioning rod and positioning hole help the assembly personnel to quickly put the fixing plate one and fixing plate two onto the end cover body. In addition, the arc-shaped positioning plate helps the assembly personnel to quickly and accurately install the end cover body onto the battery shell, thereby improving the connection efficiency. Furthermore, the compression of the rubber sealing ring can greatly improve the sealing performance of the connection between the end cover body and the battery shell, preventing moisture and impurities from entering the battery shell and causing corrosion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the disassembled connection plate one and connection plate two of this utility model;

[0018] Figure 3 This is a schematic diagram of the fixing plate structure of this utility model;

[0019] Figure 4 This is a side view of the fixing plate 2 and the end cap body of this utility model;

[0020] Figure 5 This is a schematic diagram of the end cap body and fixing plate of this utility model.

[0021] The attached diagram is labeled as follows: 1. Fixing plate one; 2. Fixing plate two; 3. Battery casing; 4. End cap body; 5. Connecting plate one; 6. Connecting plate two; 7. Annular groove; 8. Positioning rod; 9. Positioning hole; 10. Mounting hole; 11. Fastening bolt; 12. Dust plug; 13. Vent hole; 14. Arc-shaped positioning plate; 15. Arc-shaped positioning groove; 16. Rubber sealing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Refer to the instruction manual appendix Figures 1-5This utility model provides a battery end cap connection structure, including a fixing plate 1 and a fixing plate 2, for connecting the end cap bodies 4 at both ends of the battery casing 3. The fixing plate 1 is fixed with a plurality of evenly distributed connecting plates 5 on the side near the battery casing 3. The fixing plate 2 is fixed with a connecting plate 6 corresponding to the connecting plates 5 on the side near the battery casing 3. The connecting plates 5 and the connecting plates 6 are detachably fixed together.

[0024] Each connecting plate 5 and each connecting plate 6 has multiple equally spaced ventilation holes 13 on their outer walls. The arrangement of multiple ventilation holes 13 can reduce the impact of connecting plates 5 and 6 on the heat dissipation of the battery casing 3 to a certain extent. The fixing plates 1 and 2 have annular grooves 7 that are adapted to the end cap body 4 on their adjacent sides. The end cap body 4 is inserted into the annular grooves 7.

[0025] Each connecting plate 5 has mounting holes 10 on its outer wall. Fastening bolts 11 are installed in the mounting holes 10. The connecting plate 5 is detachably fixed to the connecting plate 6 by means of fastening bolts 11. The fastening bolts 11 fix the connecting plate 5 and the connecting plate 6, which is more stable than the spring snap-fit ​​method.

[0026] In actual use, the assembler first inserts the two end cap bodies 4 into the battery casing 3, and then puts the fixing plate 1 and fixing plate 2 on the two end cap bodies 4 respectively. At this time, the corresponding connecting plate 5 and connecting plate 6 are spliced ​​together and fastened with fastening bolts 11. With the help of fixing plate 1 and fixing plate 2, the two end cap bodies 4 can be firmly fixed to the battery casing. When it is necessary to replace the end cap body 4, simply loosen the fastening bolts 11 between connecting plate 5 and connecting plate 6. The structure is simple and the replacement is very quick.

[0027] In this embodiment, multiple positioning rods 8 arranged in a ring array are fixedly provided on the inner walls of the two annular grooves 7. Positioning holes 9 adapted to the positioning rods 8 are machined on the outer walls of the two end cap bodies 4 on opposite sides. The positioning rods 8 are inserted into the positioning holes 9. By using the positioning rods 8 and positioning holes 9 to cooperate, the assembly personnel can quickly put the fixing plate 1 and fixing plate 2 on the end cap body 4, thereby improving the connection efficiency.

[0028] In this embodiment, a dust plug 12 is inserted into each mounting hole 10. The dust plug 12 is fitted over the outside of the fastening bolt 11. The dust plug 12 can seal the mounting hole 10, which can improve the aesthetics and prevent dust and debris from clogging the mounting hole 10 and affecting the disassembly of the fastening bolt 11.

[0029] Refer to the instruction manual appendix Figures 1-5Both end cap bodies 4 are fixed with multiple arc-shaped positioning plates 14 arranged in a ring array on the side near the battery casing 3. Both ends of the battery casing 3 are machined with arc-shaped positioning grooves 15 in the same number as the arc-shaped positioning plates 14. Both end cap bodies 4 and battery casing 3 are provided with rubber sealing rings 16 to fill the gap between them.

[0030] The arc-shaped positioning plate 14 helps assemblers to quickly and accurately install the end cap body 4 onto the battery casing 3. At the same time, the rubber sealing ring 16, when squeezed by the fixing plate 1 and the fixing plate 2, can greatly improve the sealing performance of the connection between the end cap body 4 and the battery casing 3, thereby preventing moisture and impurities from entering the battery casing 3 and causing corrosion.

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery end cap connection structure, characterized in that: It includes a fixing plate one (1) and a fixing plate two (2) for connecting the end cap body (4) at both ends of the battery casing (3). The fixing plate one (1) is fixed with a plurality of evenly distributed connecting plates one (5) on the side near the battery casing (3). The fixing plate two (2) is fixed with a connecting plate two (6) corresponding to the connecting plates one (5) on the side near the battery casing (3). The connecting plates one (5) and the connecting plates two (6) are detachably fixed together. The fixing plate one (1) and fixing plate two (2) are both machined with annular grooves (7) that are adapted to the end cap body (4) on the side closest to each other, and the end cap body (4) is inserted into the annular grooves (7).

2. The battery end cap connection structure according to claim 1, characterized in that: The inner walls of the two annular grooves (7) are each fixed with a plurality of positioning rods (8) arranged in an annular array. The outer walls of the two end cap bodies (4) on the opposite side are each machined with positioning holes (9) that are compatible with the positioning rods (8). The positioning rods (8) are inserted into the positioning holes (9).

3. The battery end cap connection structure according to claim 1, characterized in that: Each connecting plate 1 (5) has a mounting hole (10) machined on its outer wall. The mounting hole (10) is provided with a fastening bolt (11). The connecting plate 1 (5) is detachably fixed to the connecting plate 2 (6) by the fastening bolt (11).

4. The battery end cap connection structure according to claim 3, characterized in that: Each mounting hole (10) is fitted with a dust plug (12), which is placed on the outside of the fastening bolt (11).

5. The battery end cap connection structure according to claim 1, characterized in that: Each connecting plate one (5) outer wall and each connecting plate two (6) outer wall are machined with multiple equally spaced ventilation holes (13).

6. The battery end cap connection structure according to claim 1, characterized in that: Both end cap bodies (4) are fixed with multiple arc-shaped positioning plates (14) arranged in a ring array on the side near the battery casing (3). Both ends of the battery casing (3) are machined with the same number of arc-shaped positioning grooves (15) as the arc-shaped positioning plates (14).

7. The battery end cap connection structure according to claim 1, characterized in that: Both end cap bodies (4) and the battery casing (3) are provided with rubber sealing rings (16) to fill the gap between them.

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