Large cover structure, lead-acid battery shell and lead-acid battery

Abstract

The large cover structure is arranged at the upper end of an electrolytic bath in a covering mode, a plurality of acid injection pipes are formed on the large cover structure, a plurality of frame bodies are arranged on the peripheries of the inner side ends of the acid injection pipes, the frame bodies are located on the inner side of the large cover, and inclined faces are formed on the outer walls of the inner side ends of the frame bodies. When the glue is injected, the glue is firstly filled to the inclined surface and then overflows, so that a large amount of glue is prevented from entering the inner wall of the frame body and growing along the inner wall of the frame body, the glue is further prevented from blocking the acid injection pipe, in addition, the contact area among the large cover, the glue and the electrolytic bath can be increased through the arrangement of the inclined surface, and the connection firmness between the large cover and the electrolytic bath is further improved.

Description

Technical Field

[0001] The utility model relates to the field of lead-acid batteries, in particular to a large cover structure, a lead-acid battery shell and a lead-acid battery. Background Art

[0002] In the current production of lead-acid batteries, the busbars on the large cover and the battery tank are assembled after being glued by a glue dispenser. The glue dispenser dispenses glue in the slot of the large cover, and then the battery tank is inverted and assembled with the large cover. In this process, the glue will be squeezed by the busbar and flow. If the glue on both sides of the corresponding slot of the acid injection tube flows too much, the glue will flow into the acid injection tube, and then the inner end of the acid injection tube will be blocked, thus affecting the subsequent acid injection process of the lead-acid battery. How to ensure that the large cover is installed firmly and prevent the glue from flowing to the acid injection tube has become a technical problem that needs to be solved urgently. Utility Model Content

[0003] The utility model provides a large cover structure, a lead-acid battery shell and a lead-acid battery to solve the deficiencies of the prior art and the blockage of the acid injection pipe caused by glue, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technologies are proposed:

[0005] A large cover structure is provided, the cover is arranged at the upper end of the battery tank, a plurality of acid injection tubes are formed thereon, a plurality of frames are arranged on the outer periphery of the inner end of the acid injection tube, the frames are arranged on the inner side of the large cover, and the outer wall of the inner end of the frames is formed with an inclined surface. When injecting glue, the glue will first fill the inclined surface and then overflow, thereby preventing a large amount of glue from entering the inner wall of the frame and growing along the inner wall of the frame, thereby preventing the glue from clogging the acid injection tube. In addition, the setting of the inclined surface can increase the contact area between the large cover, the glue and the battery tank, thereby improving the connection firmness between the large cover and the battery tank.

[0006] Furthermore, the inner wall of the frame is formed with an inclined wall, the upper end of which extends inwardly. The setting of the inclined wall can extend the path required for the growth of the glue, thereby consuming a large amount of glue, thereby preventing a large amount of glue from growing upward and clogging the acid injection pipe.

[0007] Furthermore, a groove is formed on the surface where the upper end of the frame is located, and the arrangement of the groove is convenient for accommodating excess glue, thereby preventing the glue from overgrowing and growing downward along the outer wall of the acid injection tube to block the acid injection tube.

[0008] Furthermore, the surface where the upper end of the frame is located is an inclined surface, and the inclined surface is inclined toward the groove. The inclined surface facilitates the growth of the glue toward the direction of the groove, so as to facilitate the accommodation of the glue.

[0009] Furthermore, the lower end of the acid injection pipe extends out of the inner wall of the large cover, so as to prevent the glue from blocking the lower end of the acid injection pipe.

[0010] Furthermore, the length of the lower end of the acid injection tube protruding from the inner wall of the large cover is 2mm-3mm. The protruding length of the lower end of the acid injection tube is adjusted from 6mm to 2mm-3mm to avoid bubbling during acid injection.

[0011] A lead-acid battery shell comprises the above-mentioned large cover and a battery tank arranged at the lower end of the large cover. The shell of this structure has a good connection effect between the large cover and the battery tank.

[0012] A lead-acid battery is manufactured by using the lead-acid battery shell to manufacture a lead-acid battery with strong sealing performance.

[0013] The advantages of the above technical solution are:

[0014] The utility model can prevent the glue from blocking the acid injection pipe, improve the connection firmness between the large cover and the battery tank, and avoid the problem of bubbling during acid injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0016] Figure 1 A three-dimensional structural diagram of the large cover is shown.

[0017] Figure 2 A cross-section of the large cover is shown. DETAILED DESCRIPTION

[0018] like Figure 1~Figure 2 As shown, a large cover structure is provided at the upper end of the battery tank, and a plurality of acid injection tubes 10 are formed thereon. A plurality of frames 2 are provided on the outer periphery of the inner ends of the acid injection tubes 10. The frames 2 are located on the inner side of the large cover 1, and the outer wall of the inner end of the frames 2 is formed with an inclined surface 20. The inner wall of the frames 2 is formed with an inclined wall 21, and the upper end of the inclined wall 21 extends inwardly.

[0019] In this embodiment, when injecting glue, the glue is first filled and grown on the outside of the frame, and when the large cover and the electric trough are connected, the glue will grow at the inclined wall, thereby increasing the contact area between the electric trough and the large cover, thereby ensuring the firmness after the connection and fixation. When the large cover and the electric trough are connected, part of the glue will inevitably grow upward along the inner wall of the frame, and the presence of the inclined wall can expand the contact area between the glue and the frame, thereby reducing the probability of glue growing upward, thereby avoiding the glue from clogging the lower end of the acid injection pipe.

[0020] In some other embodiments, a groove 23 is formed on the surface where the upper end of the frame body 2 is located, and the surface where the upper end of the frame body 2 is located is an inclined surface 22, and the inclined surface 22 is inclined toward the groove 23.

[0021] In this embodiment, when the battery tank and the large cover are connected, the groove is provided to absorb and accommodate excess glue, thereby avoiding blockage of the lower end of the acid injection pipe as much as possible.

[0022] In some other embodiments, the lower end of the acid injection tube 10 extends out of the inner wall of the large cover 1 , and the length of the lower end of the acid injection tube 10 protruding from the inner wall of the large cover 1 is 2 mm-3 mm.

[0023] In this embodiment, by setting a reasonable protruding length of the lower end of the acid injection tube, firstly, blockage of the lower end of the acid injection tube can be avoided, and secondly, bubbling problems can be avoided during acid injection.

[0024] In some other embodiments, a lead-acid battery casing includes the above-mentioned large cover 1 and a battery tank disposed at the lower end of the large cover 1.

[0025] The shell provided by this embodiment has a strong structural firmness.

[0026] In some other embodiments, a lead-acid battery is made using the above-mentioned lead-acid battery shell.

[0027] The battery provided in this embodiment has strong sealing performance.

[0028] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A large cover structure, on which a plurality of acid injection tubes (10) are formed, a plurality of frames (2) are provided on the outer periphery of the inner ends of the acid injection tubes (10), and the frames (2) are located on the inner side of the large cover (1), characterized in that: An inclined surface (20) is formed on the outer wall of the inner end of the frame (2).

2. The large cover structure according to claim 1, characterized in that: An inner wall of the frame body (2) is formed with an inclined wall (21), and the upper end of the inclined wall (21) extends inwardly at an angle.

3. The large cover structure according to claim 1, characterized in that: A groove (23) is formed on the surface where the upper end of the frame (2) is located.

4. The large cover structure according to claim 3, characterized in that: The surface where the upper end of the frame (2) is located is an inclined surface (22), and the inclined surface (22) is inclined toward the groove (23).

5. The large cover structure according to claim 1, characterized in that: The lower end of the acid injection pipe (10) protrudes from the inner wall of the large cover (1).

6. The large cover structure according to claim 5, characterized in that: The lower end of the acid injection tube (10) protrudes from the inner wall of the large cover (1) by 2 mm to 3 mm.

7. A lead-acid battery casing, characterized in that: It comprises a large cover (1) as claimed in any one of claims 1 to 6 and an electric tank arranged at the lower end of the large cover (1).

8. A lead-acid battery, characterized in that: Made from a lead-acid battery casing as claimed in claim 7.

Images