Pole explosion-proof integrated piece, battery structure assembly and battery

Abstract

The utility model relates to the technical field of energy storage equipment, in particular to a pole explosion-proof integrated piece which is provided with a first end face and a second end face which are oppositely arranged, the second end face is arranged towards the interior of a battery, a first groove is formed in the first end face, a second groove is formed in the second end face, and the first groove and the second groove share a groove bottom. Any one side or two sides of the groove bottom are provided with nicks, so that the groove bottom is explosion-proof. The utility model further provides a battery structure assembly which comprises a welding piece, a rubber coating piece and the anti-explosion integrated pole piece, and the welding piece is connected with the anti-explosion integrated pole piece through the rubber coating piece. The utility model also provides a battery which comprises a box body and the battery structure assembly, and the battery structure assembly is arranged at the opening of the box body. According to the pole explosion-proof integrated piece, the battery structure assembly and the battery, the quality stability of an explosion-proof valve can be guaranteed, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage devices, in particular to an integrated pole explosion-proof component, a battery structure component and a battery. Background Art

[0002] Existing batteries are all provided with explosion-proof valves to ensure the safety of the batteries during use. The explosion-proof valves are often arranged on the top cover sheet of the battery and fixed to the top cover sheet through welding technology. However, due to the small size of the explosion-proof valves and the need to precisely avoid the notch positions during welding, problems such as welding holes, explosion during welding, false welding and welding deviation are likely to occur during the welding process, resulting in low welding efficiency, low production efficiency of products, and poor quality stability of the explosion-proof valves. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an integrated pole explosion-proof component, a battery structure component and a battery, which helps to ensure the quality stability of the explosion-proof valve and improve the production efficiency.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] Provide a battery structure component, the integrated pole explosion-proof component has a first end face and a second end face arranged oppositely, the second end face faces the inside of the battery, a first groove is opened on the first end face, a second groove is opened on the second end face, the first groove and the second groove have a common groove bottom, and a notch is opened on one side or both sides of the groove bottom so that the groove bottom can prevent explosion.

[0006] Optionally, notches are opened on both sides of the groove bottom, and the notches on both sides are arranged oppositely.

[0007] Optionally, the cross-section of the notch is trapezoidal, and the opening of the cross-section of the notch is the long side of the trapezoid.

[0008] Optionally, the cross-section of the notch has a bottom edge and two side edges, both of the two side edges are inclined towards the opening of the cross-section of the notch, and there are step edges on the two side edges, and the step edges face the opening of the cross-section of the notch.

[0009] Provide a battery structure component, including a welding component, a rubber-coated component and the above integrated pole explosion-proof component, and the welding component is connected to the integrated pole explosion-proof component through the rubber-coated component.

[0010] Optionally, the rubber-coated component is arranged around the side surface of the integrated pole explosion-proof component, the welding component is a welding ring, and the welding ring is circumferentially connected to the rubber-coated component.

[0011] Optionally, it further includes a top cover sheet, the top cover sheet is provided with an avoidance hole, the welding part is welded to the top cover sheet, and the second groove of the pole column explosion-proof integrated part communicates with the avoidance hole.

[0012] Optionally, the top cover sheet is provided with a positioning groove, the welding part is embedded in the positioning groove, and the avoidance hole is opened at the bottom of the positioning groove.

[0013] Optionally, it further includes an insulating sealing ring, and the insulating sealing ring is partially clamped between the second end face of the pole column explosion-proof integrated part and the top cover sheet to ensure interval insulation between the pole column explosion-proof integrated part and the top cover sheet.

[0014] Provided is a battery, including a box body and the above-mentioned battery structure assembly, and the battery structure assembly is arranged at the opening of the box body.

[0015] Advantages of the present utility model:

[0016] The present utility model provides a pole column explosion-proof integrated part. The pole column explosion-proof integrated part has a first end face and a second end face arranged oppositely. The second end face faces the inside of the battery. A first groove is opened on the first end face, and a second groove is opened on the second end face. The first groove and the second groove have a common groove bottom, and a notch is opened on one side or both sides of the groove bottom so that the groove bottom can prevent explosion. That is, the pole column explosion-proof integrated part realizes the integration of the pole column and the explosion-proof valve, and realizes the two functions of the pole column and the explosion-proof valve on one part, eliminating the step of separately welding the explosion-proof valve on the top cover sheet. The pole column is fixed on the top cover sheet, and the explosion-proof valve is also fixed on the top cover sheet accordingly, which can improve production efficiency. And the integrated structure avoids many welding defects that may exist in the welding of the explosion-proof valve in the prior art, and this pole column explosion-proof integrated part helps to ensure the quality stability of the explosion-proof valve.

[0017] The present utility model also provides a battery structure assembly, including a welding part, a rubber-coated part and the above-mentioned pole column explosion-proof integrated part. The welding part and the pole column explosion-proof integrated part are connected through the rubber-coated part. This battery structure assembly helps to ensure the quality stability of the explosion-proof valve and can improve production efficiency.

[0018] The present utility model also provides a battery, including a box body and the above-mentioned battery structure assembly, and the battery structure assembly is arranged at the opening of the box body. This battery helps to ensure the quality stability of the explosion-proof valve and can improve production efficiency. Description of the drawings

[0019] Figure 1 is the structural schematic diagram of the battery structure assembly provided by the embodiment of the present utility model Figure 1 ;

[0020] Figure 2It is a schematic structure of the battery structure component provided by the embodiment of the present utility model Figure 2 ;

[0021] Figure 3 is Figure 2 a partial view of the A-A cross-sectional view in

[0022] In the figure:

[0023] 1. Pole column explosion-proof integrated part; 11. First end face; 111. First groove; 1111. First notch; 12. Second end face; 121. Second groove; 1211. Second notch;

[0024] 2. Welding ring; 3. Encapsulation part; 4. Top cover piece; 5. Insulating sealing ring; 6. Lower plastic. Specific embodiments

[0025] The technical solution of the present utility model will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all of them.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0028] Such as Figures 1 - 3As shown in the figure, the pole column explosion-proof integrated part 1 of this embodiment has a first end face 11 and a second end face 12 arranged opposite to each other. The second end face 12 faces the inside of the battery. A first groove 111 is formed on the first end face 11, and a second groove 121 is formed on the second end face 12. The first groove 111 and the second groove 121 have a common groove bottom, and a notch is formed on one side or both sides of the groove bottom so that the groove bottom can prevent explosion. Optionally, the notch is formed by stamping.

[0029] The pole column explosion-proof integrated part 1 realizes the integration of the pole column and the explosion-proof valve, and realizes the two functions of the pole column and the explosion-proof valve on one part, eliminating the step of separately welding the explosion-proof valve on the top cover sheet 4. The pole column is fixed on the top cover sheet 4, and the explosion-proof valve is also fixed on the top cover sheet 4 accordingly, which can improve production efficiency. And the integrated structure avoids many welding defects that may exist in the welding of the explosion-proof valve in the prior art, and the pole column explosion-proof integrated part 1 helps to ensure the quality stability of the explosion-proof valve.

[0030] Optionally, the depths of the first groove 111 and the second groove 121 are quite the same, that is, the explosion-proof part is located in the middle of the pole column body part. Of course, in other embodiments, the explosion-proof part can also be located at the top or bottom of the central through hole of the pole column body part, as long as it can ensure that one side of the explosion-proof part is communicated with the outside and the other side is communicated with the inside of the battery. Of course, being located in the middle is beneficial to preventing external components from damaging the explosion-proof part or internal components from damaging the explosion-proof part.

[0031] Optionally, in this embodiment, notches are formed on both sides of the groove bottom, and the notches on both sides are arranged oppositely. Optionally, in this embodiment, the notch is in a closed circular shape. Of course, in other embodiments, the notch can also be a closed oval or polygon, or an open circular, oval or polygon, etc.

[0032] Optionally, the cross-section of the notch is trapezoidal, and the opening of the cross-section of the notch is the long side of the trapezoid.

[0033] Optionally, the cross-section of the notch may not be trapezoidal, but a form of two-layer trapezoids superimposed. That is, the cross-section of the notch has a bottom side and two side edges, and both side edges are inclined towards the opening of the cross-section of the notch, and there are step edges on the two side edges, and the step edges face the opening of the cross-section of the notch.

[0034] In this embodiment, the cross-section of the first notch 1111 facing outwards is in the form of two-layer trapezoids superimposed, and the cross-section of the second notch 1211 facing inwards is in the form of a single-layer trapezoid. Of course, in other embodiments, the notches facing inwards and outwards can also be both set in the form of two-layer trapezoids superimposed or single-layer trapezoid, or the cross-section of the first notch 1111 facing outwards is set in the form of a single-layer trapezoid, and the cross-section of the second notch 1211 facing inwards is set in the form of two-layer trapezoids superimposed.

[0035] This embodiment also provides a battery structure assembly, including a welding piece, a rubber coating piece 3 and the above-mentioned pole explosion-proof integrated piece 1, the welding piece is connected to the pole explosion-proof integrated piece 1 through the rubber coating piece 3, that is, it is pre-processed into an integrated piece through the rubber coating process, and can be connected to the top cover sheet 4 through the welding piece. The battery structure assembly helps to ensure the quality stability of the explosion-proof valve and can improve production efficiency.

[0036] Optionally, the rubber-coated part 3 is arranged on the side of the pole explosion-proof integrated part 1, and the welding part is a welding ring 2, which is circumferentially connected to the rubber-coated part 3. Optionally, the welding ring 2 is connected to the bottom of the outer side of the rubber-coated part 3 to facilitate the welding ring 2 to connect the components below the rubber-coated part 3.

[0037] Optionally, the battery structure assembly further includes a top cover sheet 4, the top cover sheet 4 is provided with an avoidance hole, the welding piece is welded to the top cover sheet 4, and the second groove 121 of the pole explosion-proof integrated part 1 is connected to the avoidance hole to be connected with the inside of the battery.

[0038] Optionally, a positioning groove is provided on the top cover sheet 4, the welding piece is embedded in the positioning groove, and the avoidance hole is provided at the bottom of the positioning groove. Optionally, the bottom surface of the welding piece can be welded to the top surface of the top cover sheet 4, and the outer ring wall surface of the welding piece can be welded to the side wall of the positioning groove.

[0039] Optionally, the battery structure assembly also includes an insulating sealing ring 5, and the insulating sealing ring 5 is partially sandwiched between the second end face 12 of the pole explosion-proof integrated part 1 and the top cover sheet 4 to ensure insulation between the pole explosion-proof integrated part 1 and the top cover sheet 4. Optionally, the insulating sealing ring 5 includes an inner ring, an outer ring, and an annular end face connecting the inner ring and the outer ring. The inner ring, the outer ring, and the annular end face together form a positioning groove that opens toward the inside of the battery, and the side of the avoidance hole of the top cover sheet 4 protrudes outward to be inserted into the above-mentioned positioning groove. The outer ring of the insulating sealing ring 5 abuts against the inner side wall of the rubber-coated part 3, and the annular end face abuts against the second end face 12 of the pole explosion-proof integrated part 1, so that the pole explosion-proof integrated part 1 and the top cover sheet 4 can be spaced apart to ensure insulation between the two.

[0040] Optionally, the battery structure assembly also includes a lower plastic 6, which is located on the inner side of the top cover sheet 4. A connecting hole is opened in the lower plastic 6 corresponding to the position of the avoidance hole. The side wall of the connecting hole of the lower plastic 6 is connected to the inner circle of the insulating sealing ring 5 to ensure insulation between the top cover sheet 4 and the electrical conductive parts inside the battery.

[0041] The pole explosion-proof integrated part 1 realizes the direct integration of the explosion-proof valve on the pole, and is fixed by an innovative rubber encapsulation process of the pole explosion-proof integrated part 1 and the welding ring 2. Subsequently, the welding ring 2 is precisely welded to the top cover sheet 4 to ensure a firm connection between the explosion-proof part and the top cover sheet 4.

[0042] The integrated explosion-proof component 1 of the terminal post abandons the traditional method of directly welding an explosion-proof valve on the top cover sheet 4, but innovatively stamps an explosion-proof valve on the terminal post. Then, through an advanced encapsulation process, the terminal post and the welding ring 2 are tightly combined into a whole. Finally, this encapsulated integral structure is precisely welded to the top cover sheet 4, thus forming a stable and reliable explosion-proof structure. This integrated design not only improves production efficiency, but also ensures the stability and reliability of the explosion-proof valve, significantly enhancing the overall safety of the battery.

[0043] This embodiment also provides a battery, including a box body and the above-mentioned battery structure assembly. The battery structure assembly is arranged at the opening of the box body, and the top cover sheet 4 of the battery structure assembly is hermetically connected to the box body, jointly forming the outer shell of the battery. This battery helps to ensure the quality stability of the explosion-proof valve and can improve production efficiency.

[0044] Obviously, the above-mentioned embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. The pole explosion-proof integrated part is characterized by: The pole explosion-proof integrated part (1) comprises a first end face (11) and a second end face (12) which are arranged opposite to each other, the second end face (12) being arranged towards the inside of the battery, a first groove (111) being provided on the first end face (11), a second groove (121) being provided on the second end face (12), the first groove (111) and the second groove (121) having a common groove bottom, and notches being provided on any one side or both sides of the groove bottom so as to make the groove bottom explosion-proof.

2. The pole explosion-proof integrated part according to claim 1, characterized in that: The notches are provided on both sides of the groove bottom, and the notches on the two sides are arranged opposite to each other.

3. The pole explosion-proof integrated part according to any one of claims 1 to 2, characterized in that: The cross section of the notch is a trapezoid, and the opening of the cross section of the notch is the long side of the trapezoid.

4. The pole explosion-proof integrated part according to any one of claims 1 to 2, characterized in that: The cross section of the notch has a bottom edge and two side edges, the two side edges are inclined to face the opening of the cross section of the notch, and the two side edges have step edges, which face the opening of the cross section of the notch.

5. A battery structure assembly, characterized in that: It comprises a welding part, a rubber-coated part (3) and the pole explosion-proof integrated part (1) according to any one of claims 1 to 4, wherein the welding part is connected to the pole explosion-proof integrated part (1) via the rubber-coated part (3).

6. The battery structure assembly according to claim 5, characterized in that: The rubber-coated component (3) is arranged on the side of the pole explosion-proof integrated component (1), and the welding component is a welding ring (2), and the welding ring (2) is circumferentially connected to the rubber-coated component (3).

7. The battery structure assembly according to claim 5, characterized in that: It also comprises a top cover sheet (4), the top cover sheet (4) is provided with an escape hole, the welding piece is welded to the top cover sheet (4), and the second groove (121) of the pole explosion-proof integrated piece (1) is connected to the escape hole.

8. The battery structure assembly according to claim 7, characterized in that: The top cover sheet (4) is provided with a positioning groove, the welding piece is embedded in the positioning groove, and the avoidance hole is provided at the bottom of the positioning groove.

9. The battery structure assembly according to claim 7, characterized in that: It also comprises an insulating sealing ring (5), wherein the insulating sealing ring (5) is partially sandwiched between the second end surface (12) of the pole explosion-proof integrated part (1) and the top cover sheet (4) to ensure insulation between the pole explosion-proof integrated part (1) and the top cover sheet (4).

10. A battery, characterized in that It comprises a box body and a battery structure assembly as described in any one of claims 5 to 9, wherein the battery structure assembly is arranged at the opening of the box body.

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