A battery cover for preventing glue from overflowing

Abstract

The present invention discloses a battery cover for preventing glue from overflowing, the battery cover comprises a cover body and a protective cap, the cover body is provided with a pole hole; the protective cap is integrally formed on the cover body, the protective cap is a thin shell, the protective cap is sealed and arranged above the pole hole, the protective cap has a force-bearing part, and the protective cap exposes the pole hole after the force-bearing part is subjected to force. In the present invention, a protective cap with a thin shell structure is provided to shield the pole hole, which can effectively prevent epoxy resin from flowing into the positive and negative pole holes, and the fixing element of the protective cap is single, and the pole hole is quickly exposed after being damaged by external force.

Description

Technical Field

[0001] The present invention belongs to the technical field of lead-acid battery production, and particularly relates to a battery cover for preventing glue overflow. Background Art

[0002] The battery cover used in lead-acid batteries is usually sealed with epoxy resin. Taking the battery cover of a lead-acid battery as an example, such products usually have positive and negative terminal post holes. After the battery cover and the battery case assembled with it are sealed with glue, the positive and negative terminal posts need to be exposed on the product surface through the holes reserved on the battery cover, so that in the subsequent process, the assembled lead-acid battery finished product can be charged and other operations by using the positive and negative terminal posts exposed on the battery surface.

[0003] In the prior art, a Chinese patent application document with the application number 201610498823.0 discloses a lead-acid battery busbar made of non-lead materials, including a battery middle cover, a busbar and a screw hole cap. Terminal openings are provided at both ends of the battery middle cover corresponding to the positions of the battery terminal posts. The inner diameter size of the screw hole cap matches the diameter of the terminal post, and the outer diameter size of the screw hole cap matches the inner diameter of the terminal opening of the battery middle cover. The screw hole cap is sleeved on the terminal post and then embedded into the terminal opening. When the battery is sealed with epoxy resin, the epoxy resin will not flow into the terminal post hole.

[0004] The above prior art can solve the problem of epoxy resin flowing into the positive and negative terminal post holes to a certain extent. However, after adding a certain proportion of curing agent to the epoxy resin, the two will blend with each other after a period of time, forming a crystal substance with extremely strong adhesion and hard texture, resulting in the difficulty of removing the screw hole cap, which is also not conducive to the subsequent operation of the lead-acid battery. Summary of the Invention

[0005] Aiming at the problem in the prior art that it is difficult to remove the screw hole cap fixed by the cured epoxy resin to expose the internal terminal post, the present invention proposes the following technical solutions:

[0006] The present invention provides a battery cover for preventing glue overflow, which includes:

[0007] A cover body, the cover body is provided with terminal post holes;

[0008] And a protective cap, the protective cap is integrally formed on the cover body, the protective cap is a thin shell, the protective cap is hermetically arranged above the terminal post holes, the protective cap has a stress part, and the protective cap exposes the terminal post holes after the stress part is stressed.

[0009] As the protective cap of the above technical solution, after being set as a thin shell, it has a single fixing element, that is, it is integrally formed with the cover body and has no limiting components inside. The protective cap can be completely or partially separated from the cover body when applying force, thereby exposing the terminal post holes on the cover body.

[0010] In a specific embodiment of the present invention, a chamfered notch - type thin wall that is easily damaged under force is provided at the connection between the protective cap and the cover body. The chamfered notch - type thin wall has relatively low strength and is easily damaged under force, so that the entire protective cap can be separated from the cover body.

[0011] As a preference of the above - mentioned technical solution, the outer cross - section of the top of the protective cap is hexagonal, and the outer cross - section of the bottom of the protective cap is circular. Setting the top of the protective cap to be hexagonal is to fit common wrenches and facilitate applying force to the protective cap.

[0012] As a preference of the above - mentioned technical solution, the outer cross - section of the protective cap is circular, and anti - slip patterns are provided on the top of the protective cap. Providing anti - slip patterns is another technical means to facilitate applying force to the protective cap.

[0013] In another specific embodiment of the present invention, the top of the protective cap is a decomposition part, and the decomposition part includes a surrounding plate with a hexagonal cross - section and a hexagonal top plate. A notch - type thin wall that is easily damaged under force is provided at the connection between the surrounding plate and the top plate.

[0014] Setting the top of the protective cap as a decomposition part composed of a surrounding plate and a top plate, and the decomposition part is not solidified inside the epoxy resin, which can avoid the strong adhesive force of the epoxy resin after curing from hindering the separation of the top plate from the surrounding plate.

[0015] As a preference of the above - mentioned technical solution, a reinforcing rib is arranged along the diagonal of the top plate at the top of the top plate. The decomposition part is divided into two force - receiving parts with the reinforcing rib as the boundary, and the top plate arches upward and separates after the decomposition part is stressed.

[0016] As a preference of the above - mentioned technical solution, dot - shaped strengthening parts are provided outside the notch - type thin walls on both sides of the reinforcing rib.

[0017] The beneficial effects of the present invention are as follows: In the present invention, a protective cap with a thin - shell structure is provided to shield the pole holes, which can effectively prevent epoxy resin from flowing into the positive and negative pole holes. Moreover, the fixing element of the protective cap is single, and it can be quickly exposed by being damaged after external force is applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. shows the structural schematic diagram of the battery cover in Embodiment 1;

[0019] Figure 2 FIG. shows Figure 1 the cross - sectional view taken along A - A in

[0020] Figure 3 FIG. shows the structural schematic diagram of the battery cover in Embodiment 2;

[0021] Figure 4The structure diagram of the protective cap in Example 2 is shown;

[0022] Figure 5 Shows a schematic diagram of the connection structure between the enclosure and the top plate in Example 2;

[0023] Figure 6 Shown is Figure 4 A partial enlarged view of point A. Specific implementation method

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described in conjunction with the embodiments below.

[0025] Example 1

[0026] Figure 1 The structure diagram of the battery cover of this embodiment is shown. The battery cover includes a cover body 1, on which a pole hole 11 is opened. The pole hole 11 is used to fit the pole. A protective cap 2 is provided above the pole hole 11. The protective cap 2 and the cover body 1 are integrally formed by injection molding. The cover body 1 is a thin shell structure.

[0027] When the battery cover and the battery shell are sealed, the pole hole 11 corresponds to the installation position of the pole, and the protective cap 2 forms a cofferdam above the pole hole 11, so that the epoxy resin is blocked by the cofferdam and cannot enter the pole hole 11. At the same time, the protective cap 2 is a thin shell structure, which is only connected to the cover body 1. After the epoxy resin is cured, the protective cap 2 can be removed to expose the pole hole 11.

[0028] See also Figure 1 , an angled notch thin wall 21 is provided at the root of the protective cap 2 (i.e., the connection between the protective cap 2 and the cover body 1), and the protective cap 2 is connected to the cover body 1 through the angled notch thin wall 21. The angled notch thin wall 21 can satisfy the sealing between the protective cap 2 and the cover body 1 on one hand, and has the characteristic of low strength on the other hand. The angled notch thin wall 21 is easily damaged after being subjected to force, so that the protective cap 2 is separated from the cover body 1, thereby exposing the pole hole 11 on the cover body 1.

[0029] Figure 2 Shown is Figure 1 The cross-sectional view of AA in is a schematic cross-sectional view of the protective cap 2, combined with Figure 2 It can be seen that at least a part of the outer cross-section of the protective cap 2 is hexagonal, so that it is convenient to remove the protective cap 2 by rotating it with a wrench. Usually, the hexagonal cross-section is set at the top of the protective cap 2, while the bottom of the protective cap 2 is still set to be circular, especially the part in contact with the epoxy resin, so as to facilitate the removal of the protective cap 2 by rotating it.

[0030] ​In some other specific embodiments, the outer cross-section of the protective cap 2 is circular, and anti-slip patterns are provided on the outer side wall of the protective cap 2 to increase the frictional force during rotation, thereby facilitating the application of rotational force to remove the protective cap 2.

[0031] Embodiment 2

[0032] Figure 3 The following shows a schematic structural view of the battery cover of this embodiment. The battery cover includes a cover body 1, and a pole hole 11 is formed on the cover body 1. The pole hole 11 is used for fitting and installing a pole. Above the pole hole 11, there is a protective cap 2. The protective cap 2 and the cover body 1 are integrally formed by injection molding, and the cover body 1 is a thin-shell structure.

[0033] When the battery cover and the battery case are adhesively sealed with epoxy resin, the pole hole 11 corresponds to the installation position of the pole. The protective cap 2 forms a cofferdam above the pole hole 11, so that the epoxy resin is blocked by the cofferdam and cannot enter the pole hole 11. At the same time, the protective cap 2 is a thin-shell structure and is only connected to the cover body 1. After the epoxy resin is cured, removing the protective cap 2 can expose the pole hole 11.

[0034] Figure 4 The following shows a schematic structural view of the protective cap 2. The top of the protective cap 2 has a hexagonal decomposition part 22. The decomposition part 22 includes a hexagonal-shaped surrounding plate 221 and a hexagonal top plate 222. The surrounding plate 221 and the top plate 222 can be separated when an external force is applied, thereby exposing the notch at the top of the surrounding plate 221, that is, exposing the pole hole 11.

[0035] This embodiment is different from the protective cap 2 in Embodiment 1. In Embodiment 1, the protective cap 2 is provided with an angled notch-type thin wall 21 at the root of the protective cap 2, and the angled notch-type thin wall 21 is destroyed by applying a rotational force to remove the protective cap 2. However, this structure still has the following defects: After the epoxy resin is cured, a certain strength of adhesion will be generated between the epoxy resin and the protective cap 2, which will hinder the process of destroying the angled notch-type thin wall 21 by applying a rotational force. Moreover, the angled notch-type thin wall 21 is a continuous circular stable structure, and a large external force is also required to destroy the angled notch-type thin wall 21.

[0036] In this embodiment, the structure of the top of the protective cap 2 is improved. The top of the protective cap 2 is provided with a decomposition part 22 composed of a surrounding plate 221 and a top plate 222. The decomposition part 22 is not cured inside the epoxy resin, so it is avoided that the strong adhesion force of the epoxy resin after curing hinders the separation of the top plate 222 from the surrounding plate 221.

[0037] More specifically, refer to Figure 5 , Figure 5The diagram shows the connection structure of the enclosure 221 and the top plate 222. A notched thin wall 223 is provided at the connection between the enclosure 221 and the top plate 222. The top plate 222 is sealedly connected to the enclosure 221 through the notched thin wall 22. The notched thin wall 223 is easily damaged under the action of external force, so that the top plate 222 is separated from the enclosure 221, thereby exposing the pole hole 11 on the cover body 1.

[0038] Figure 6 Shown is Figure 4 A partial enlarged view of the A in the middle. A reinforcing rib 224 is arranged diagonally along the top plate 222 on the top surface of the top plate 222, and the reinforcing rib 224 divides the top plate 222 into two parts. Point-shaped reinforcing parts 225 are arranged outside the notched thin wall 22 on both sides of the reinforcing rib 224.

[0039] All structures of the protective cap 2 are integrally formed by injection molding, and the protective cap 2 and the cover body 1 are also integrally formed by injection molding. Among them, the reinforcing rib 224 can serve as an indicator of operation, that is, the reinforcing rib 224 divides the top plate 222 into two parts, and the two sides of the reinforcing rib 224 are force-applying parts; on the other hand, the function of the reinforcing rib 224 is to strengthen the upper part of the top plate 222. Under the action of the reinforcing rib 224, once the top plate 222 is subjected to an external force symmetrical to the reinforcing rib 224, the top plate 222 will bend and deform in an arched state.

[0040] Under the splitting indication of the reinforcing rib 224, the operator squeezes the two sides of the reinforcing rib 224, causing different deformations of the enclosure 221 and the top plate 222 under the squeezing, thereby generating a difference in deformation stress, which will have a destructive effect on the notched thin wall 223, causing the enclosure 221 and the top plate 222 to separate; and the presence of the reinforcing rib 224 will cause the top plate 222 to arch upward during the separation process, thereby facilitating the direct removal of the separated top plate 222. The provision of the reinforcing rib 224 can prevent the top plate 222 from deforming unstably and sinking downward (i.e. sinking into the protective cap 2) when subjected to force. Once the top plate 222 is separated, it will fall into the protective cap 2 and cover the pole hole 11 that should have been exposed.

[0041] The point-shaped reinforcement part 225 is provided to make the notched thin wall 22 on both sides of the reinforcement rib 224 have different separation states from the notched thin wall 22 at other positions, that is, the reinforcement rib 224 has a certain reinforcement effect on the notched thin wall 22, so that the notched thin wall 22 on both sides of the reinforcement rib 224 is separated and evacuated later than the notched thin wall 22 at other positions, so that it is easier to make the top plate 222 arch up during separation to remove the top plate 222.

[0042] The above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit it.

Claims

1. A battery cover for preventing glue from overflowing, characterized in that: include: A cover body, wherein the cover body is provided with a pole hole; and a protective cap, wherein the protective cap is integrally formed on the cover body, the protective cap is a thin shell, the protective cap is sealingly arranged above the pole hole, the protective cap has a force-bearing portion, and the protective cap exposes the pole hole after the force-bearing portion is subjected to force; The top of the protective cap is a decomposition part, which includes a hexagonal enclosure and a hexagonal top plate. The connection between the enclosure and the top plate is provided with a notched thin wall that is easily damaged by force. The top of the top plate has a reinforcing rib arranged diagonally along the top plate, and the decomposition part is divided into two force-bearing parts by the reinforcing rib. After the decomposition part is subjected to force, the top plate is arched upward and separated.

2. The battery cover with anti-overflow glue according to claim 1, characterized in that: Point-shaped reinforcement parts are arranged outside the notched thin walls on both sides of the reinforcement rib.

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