Storage battery pole sealing structure and storage battery

Abstract

The utility model relates to the technical field of storage batteries, in particular to a storage battery pole sealing structure and a storage battery, the storage battery pole sealing structure comprises a battery cover and a pole, the battery cover is provided with a pole hole, the periphery of the pole hole is provided with an annular wall, an annular accommodating groove is formed between the inner annular wall of the annular wall and the outer wall of the pole hole, and the pole comprises a pole body and an annular part, the annular part is arranged on the pole body along the circumferential direction of the pole body, an annular groove is formed between the inner annular wall of the annular part and the outer wall of the pole body, a first sealing groove is formed between the inner annular wall of the annular part and the outer wall of the pole hole, and a second sealing groove is formed between the outer annular wall of the annular part and the inner annular wall of the annular wall. According to the glue sealing process of the storage battery pole sealing structure, the steps of placing a sealing ring and pressing the sealing ring are omitted, the sealing effect can be achieved only by injecting the sealing glue into the first sealing groove and the second sealing groove, the glue sealing process of the storage battery pole sealing structure is simplified, and the situation that the production efficiency is affected due to multiple glue sealing process steps is avoided.

Description

Technical Field

[0001] This utility model relates to the field of storage battery technology, and in particular to a storage battery terminal sealing structure and a storage battery. Background Technology

[0002] Batteries are prone to leakage during prolonged use. One form of leakage is that electrolyte can climb up the battery terminals and gradually seep into the outside of the battery. Furthermore, corrosive electrolyte entering the external environment can corrode electrical components connected to the battery. Therefore, maintaining a tight seal between the battery terminals and the terminal holes on the battery cover is crucial.

[0003] Currently, the patent publication number CN102945933A discloses a lead-acid battery terminal sealing structure, in which a sealing ring made of high elastic thermoplastic rubber SEBS is provided between the terminal and the cover, and a plastic clamping plate is provided on the top of the sealing ring. Above the clamping plate is a fixing ring that is threadedly connected to the cover. The cavity between the terminal and the cover (hereinafter referred to as the battery cover) above the fixing ring is filled with polyurethane resin sealant.

[0004] However, in the aforementioned battery terminal sealing structure, the sealing process requires placing a sealing ring between the terminal and the terminal hole of the battery cover, then pressing the sealing ring tightly, and finally injecting polyurethane resin sealant. This results in numerous sealing process steps for the battery terminal sealing structure, affecting production efficiency. Utility Model Content

[0005] One of the objectives of this utility model is to provide a battery terminal sealing structure and a battery, which can effectively simplify the sealing process of the battery terminal sealing structure and avoid affecting production efficiency due to the numerous sealing process steps.

[0006] To achieve the above objectives, in a first aspect, this utility model provides a battery terminal sealing structure, including a battery cover and terminals. The battery cover has a terminal hole, and an annular wall is provided around the terminal hole. An annular receiving groove is formed between the inner annular wall of the annular wall and the outer wall of the terminal hole. The terminal includes a terminal body and an annular portion connected to each other. The annular portion is disposed at the first end of the terminal body along the circumference of the terminal body. An annular groove is formed between the inner annular wall of the annular portion and the outer wall of the terminal body. The bottom of the second end of the annular groove facing away from the terminal body is closed. The second end of the terminal body passes through the terminal hole, and the annular portion is inserted into the annular receiving groove. A first sealing groove is formed between the inner annular wall of the annular portion and the outer wall of the terminal hole. A second sealing groove is formed between the outer annular wall of the annular portion and the inner annular wall of the annular wall. Sealant is used to seal the first and second sealing grooves.

[0007] Furthermore, protrusions are provided on opposite sides of the outer ring wall of the annular portion.

[0008] Furthermore, the outer diameter of the pole body gradually decreases from the first end of the pole body toward the second end of the pole body.

[0009] Furthermore, the distance between the inner wall of the annular portion and the outer wall of the pole hole is set to 0.5 to 1.0 mm; the distance between the inner wall of the pole hole and the outer wall of the pole body is set to 0.5 to 1.0 mm.

[0010] Furthermore, the pole body, the annular portion, and the protrusion are integrally formed.

[0011] Furthermore, the bottom surface of the annular wall is flush with the bottom surface of the pole hole.

[0012] Secondly, this utility model provides a storage battery, including the above-mentioned storage battery terminal sealing structure.

[0013] Furthermore, the battery also includes a battery housing, with the battery cover covering the top of the battery housing, and the first end of the terminal body and the annular receiving groove both located inside the battery housing.

[0014] Furthermore, an annular inlet is provided on the top surface of the battery housing along the top of the battery housing, and an annular socket is provided on the bottom surface of the battery cover along the bottom contour of the battery cover. The annular inlet and the annular socket are inserted and sealed together.

[0015] Furthermore, a groove is provided on the annular wall, and the annular receiving groove and the annular receiving port are connected through the groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The battery terminal sealing structure of this utility model provides an annular wall around the terminal hole, forming an annular receiving groove between the inner annular wall and the outer wall of the terminal hole. Furthermore, an annular portion is circumferentially provided at the first end of the terminal body, forming an annular groove between the inner annular wall and the outer wall of the terminal body, with the bottom of the second end of the annular groove facing away from the terminal body closed. Based on this, sealant is applied to the annular receiving groove, and then the second end of the terminal body is inserted through the terminal hole, allowing the annular portion to be inserted into the annular receiving groove. This sealant seals the inner annular wall of the annular portion with the outer wall of the terminal hole, forming a first sealing groove, and seals the outer annular wall of the annular portion with the inner annular wall, forming a second sealing groove. This achieves a sealing effect, realizing a seal between the terminal and the terminal hole on the battery cover. In summary, the sealing process of the battery terminal sealing structure of this utility model omits the steps of placing and pressing the sealing ring. When assembling the terminal and the battery cover, it is only necessary to apply sealant to the annular receiving groove to achieve a sealing effect. This simplifies the sealing process of the battery terminal sealing structure and avoids affecting production efficiency due to numerous sealing process steps.

[0018] 2. Because the battery of this utility model uses the battery terminal sealing structure of this utility model, the sealing process of its terminal sealing structure also omits the steps of placing and pressing the sealing ring, which simplifies the sealing process of the terminal sealing structure and avoids affecting production efficiency due to numerous sealing process steps. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the battery terminal sealing structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the pole structure involved in an embodiment of the present utility model;

[0021] Figure 3 This is a cross-sectional view of the pole piece involved in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the battery cover according to an embodiment of the present utility model. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the structure of the battery cover according to an embodiment of the present utility model. Figure 2 ;

[0024] Figure 6 This is a schematic diagram of the battery box structure according to an embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the storage battery according to an embodiment of the present utility model;

[0026] Figure 8 for Figure 7 Top view;

[0027] Figure 9 for Figure 8 Sectional view at point AA.

[0028] Numbering in each attached figure:

[0029] 1. Battery cover; 10. Terminal hole; 11. Annular wall; 12. Annular socket; 2. Terminal; 20. Terminal body; 21. Annular part; 210. Annular groove; 22. Protrusion; 3. Battery housing; 30. Annular inlet; 4. First sealing groove; 41. Second sealing groove; 42. Sealant; 43. Annular receiving groove; 431. Groove. Detailed Implementation

[0030] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0031] In the description of this utility model, it should be understood that the terms "width", "upper", "lower", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] Please refer to Figure 1 - Figure 9 This utility model provides a battery terminal sealing structure and a battery.

[0035] Reference Figure 1 - Figure 4 The battery terminal sealing structure includes a battery cover 1 and a terminal 2. The battery cover 1 has a terminal hole 10. An annular wall 11 is provided around the terminal hole 10. An annular receiving groove 43 is formed between the inner annular wall of the annular wall 11 and the outer wall of the terminal hole 10. The terminal 2 includes a terminal body 20 and an annular part 21. The terminal body 20 and the annular part 21 are integrally connected, omitting the assembly process between the terminal body 20 and the annular part 21. The annular portion 21 is disposed around the first end of the electrode body 20 along the circumference of the electrode body 20. An annular groove 210 is formed between the inner annular wall of the annular portion 21 and the outer wall of the electrode body 20. The bottom of the second end of the annular groove 210 facing away from the electrode body is closed. The second end of the electrode body 20 passes through the electrode hole 10. The annular portion 21 is inserted into the annular receiving groove 43. A first sealing groove 4 is formed between the inner annular wall of the annular portion 21 and the outer wall of the electrode hole 10. A second sealing groove 41 is formed between the outer annular wall of the annular portion 21 and the inner annular wall 11. Sealant 42 is sealed in the first sealing groove 4 and the second sealing groove 41 to achieve a seal between the electrode 2 and the electrode hole 10 on the battery cover 1, thus achieving a sealing effect.

[0036] During assembly, the sealing structure of the battery terminal 2 of this utility model involves applying sealant 42 to the annular receiving groove 43, then inserting the second end of the terminal body 20 through the terminal hole 10, and inserting the annular part 21 into the annular receiving groove 43. The sealant 42 seals the inner annular wall of the annular part 21 and the outer wall of the terminal hole 10 to form a first sealing groove 4, and seals the outer annular wall of the annular part 21 and the inner annular wall of the annular wall 11 to form a second sealing groove 41, thereby achieving a sealing effect and realizing the seal between the terminal 2 and the terminal hole 10 on the battery cover 1.

[0037] In summary, the sealing process of the battery terminal 2 sealing structure of this utility model omits the steps of placing and pressing the sealing ring. When assembling the terminal 2 and the battery cover 1, it is only necessary to apply sealant 42 to the annular receiving groove 43 to achieve the sealing effect. This simplifies the sealing process of the battery terminal 2 sealing structure and avoids the impact on production efficiency due to the numerous sealing process steps.

[0038] In addition, it should be noted that the first sealing groove 4 and the second sealing groove 41 form a labyrinth seal in the battery terminal sealing structure, which enhances the sealing effect between the terminal 2 and the battery cover 1.

[0039] In one embodiment, the distance between the inner annular wall of the annular portion 21 and the outer wall of the pole post hole 10 is set to 0.5–1.0 mm. Specifically, the distance between the inner annular wall of the annular portion 21 and the outer wall of the pole post hole 10 is set to 0.5 mm to avoid affecting the sealing effect of the sealant 42 in the first sealing groove 4 due to an excessively large distance between the inner annular wall of the annular portion 21 and the outer wall of the pole post hole 10. In other embodiments, the distance between the inner annular wall of the annular portion 21 and the outer wall of the pole post hole 10 can also be set to 1.0 mm or 0.8 mm, which is not limited here. Similarly, the distance between the inner wall of the pole post hole 10 and the outer wall of the pole post body 20 is set to 0.5–1.0 mm. Specifically, the distance between the inner wall of the pole post hole 10 and the outer wall of the pole post body 20 is set to 0.5 mm to avoid affecting the sealing effect of the sealant 42 in the second sealing groove 41 due to an excessively large distance between the inner wall of the pole post hole 10 and the outer wall of the pole post body 20. In other embodiments, the distance between the inner wall of the pole hole 10 and the outer wall of the pole body 20 can also be set to 1.0 mm or 0.8 mm, and is not limited here.

[0040] In one embodiment, protrusions 22 are provided on opposite sides of the outer ring wall of the annular portion 21. The electrode body 20, the annular portion 21 and the protrusions 22 are integrally formed. The protrusions 22 are mainly for the operator to hold the electrode 2, thereby facilitating the assembly of the electrode 2 with the battery cover 1.

[0041] In one embodiment, the bottom surface of the annular wall 11 is flush with the bottom surface of the terminal hole 10, which facilitates the insertion of the annular portion 21 into the annular receiving groove 43. Of course, in other embodiments, the bottom surface of the annular wall 11 may not be flush with the bottom surface of the terminal hole 10, which is not limited here. Those skilled in the art can change the height of the annular wall 11 according to the height of the terminal 2 to meet the needs of batteries of different grades of the same size.

[0042] In one embodiment, the outer diameter of the pole body 20 gradually decreases from the first end of the pole body 20 toward the second end of the pole body 20, which facilitates the insertion of the pole body 20 into the pole hole 10.

[0043] Reference Figure 6 - Figure 9A storage battery includes the aforementioned battery terminal sealing structure. Furthermore, the battery also includes a battery housing 3, with a battery cover 1 sealing the top of the battery housing 3. The first end of the terminal body 20 and the annular receiving groove 43 are both located inside the battery housing 3. Thus, for the electrolyte inside the battery housing 3 to rise along the battery terminals 2 and gradually enter the outside of the battery, it must overcome the sealant 42 in the first sealing groove 4 and the sealant 42 in the second sealing groove 41. Because the first sealing groove 4 and the second sealing groove 41 form a labyrinthine structure, it is extremely difficult for the electrolyte inside the battery housing 3 to overcome the sealant 42 in the first sealing groove 4 and the sealant 42 in the second sealing groove 41 to enter the outside of the battery, greatly improving the sealing effect of the battery terminal sealing structure.

[0044] In one embodiment, an annular insertion port 30 is provided on the top surface of the battery housing 3 along the top edge of the battery housing 3, and an annular receiving port 12 is provided on the bottom surface of the battery cover 1 along the bottom contour of the battery cover 1. The annular insertion port 30 and the annular receiving port 12 are inserted and sealed together, thereby improving the sealing effect between the battery housing 3 and the battery cover 1. Furthermore, referring to... Figure 4 A slot 431 is provided on the annular wall 11, and the annular receiving groove 43 and the annular socket 12 are connected through the slot 431. This allows the glue applicator (not shown) to continuously apply glue in the annular receiving groove 43 and the annular socket 30. That is, the glue applicator can continuously and uninterruptedly complete the glue application in the annular receiving groove 43 and the annular socket 12 in one go. Of course, in other embodiments, refer to Figure 5 Alternatively, the groove 431 may not be provided on the annular wall 11. In this case, the glue applicator can only apply glue in the annular receiving groove 43 first and then apply glue in the annular insertion port 30, or apply glue in the annular insertion port 30 first and then apply glue in the annular receiving groove 43.

[0045] It should be noted that the battery assembly steps are as follows: sealant 42 can be applied to the annular receiving groove 43 by an adhesive applicator, then the terminal post 2 is assembled with the battery cover 1, and finally the battery case 3 is inverted onto the battery cover 1 to complete the assembly. The sealant 42 can be epoxy resin.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A battery terminal sealing structure, comprising a battery cover and terminals, wherein the battery cover has terminal holes, characterized in that, An annular wall is provided around the periphery of the pole post hole. An annular receiving groove is formed between the inner annular wall of the annular wall and the outer wall of the pole post hole. The pole post includes a pole post body and an annular portion connected to each other. The annular portion is disposed at the first end of the pole post body along the circumference of the pole post body. An annular groove is formed between the inner annular wall of the annular portion and the outer wall of the pole post body. The second end of the annular groove facing away from the pole post body is closed. The second end of the pole post body passes through the pole post hole. The annular portion is inserted into the annular receiving groove. A first sealing groove is formed between the inner annular wall of the annular portion and the outer wall of the pole post hole. A second sealing groove is formed between the outer annular wall of the annular portion and the inner annular wall of the annular wall. The first sealing groove and the second sealing groove are sealed with sealant.

2. The battery terminal sealing structure according to claim 1, characterized in that, The outer ring wall of the annular portion has protrusions on opposite sides.

3. The battery terminal sealing structure according to claim 1, characterized in that, The outer diameter of the pole body gradually decreases from the first end of the pole body toward the second end of the pole body.

4. The battery terminal sealing structure according to claim 1, characterized in that, The distance between the inner ring wall of the annular portion and the outer wall of the pole post hole is set to 0.5 to 1.0 mm; the distance between the outer ring wall of the annular portion and the inner ring wall of the annular portion is set to 0.5 to 1.0 mm.

5. The battery terminal sealing structure according to claim 1, characterized in that, The pole body, the annular part, and the protruding part are integrally formed.

6. The battery terminal sealing structure according to claim 1, characterized in that, The bottom surface of the annular wall is flush with the bottom surface of the pole hole.

7. A storage battery, characterized in that, Includes the battery terminal sealing structure as described in any one of claims 1-6.

8. The storage battery according to claim 7, characterized in that, It also includes a battery housing, with the battery cover covering the top of the battery housing, and the first end of the terminal body and the annular receiving groove both located inside the battery housing.

9. The storage battery according to claim 8, characterized in that, An annular inlet is provided on the top surface of the battery box along the top of the battery box, and an annular socket is provided on the bottom surface of the battery cover along the bottom contour of the battery cover. The annular inlet and the annular socket are inserted and sealed together.

10. The storage battery according to claim 9, characterized in that, A slot is provided on the annular wall, and the annular receiving groove and the annular socket are connected through the slot.

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