Secondary short circuit prevention structure with riveting block and battery

Abstract

The utility model relates to the technical field of energy storage equipment, in particular to a secondary short circuit prevention structure with a riveting block, which comprises a shell, the riveting block, a pole and an insulation sealing assembly. A first through hole is formed in the shell, a second through hole is formed in the riveting block, and the riveting block is located on one side of the shell. And one end of the pole sequentially penetrates through the first through hole and the second through hole and is riveted on the inner wall of the second through hole. And the insulation sealing assembly is clamped between the riveting block and the shell and between the pole and the shell. A first high-temperature-resistant insulating layer is arranged on the shell to prevent the riveting block or the pole from being conducted with the shell, and / or a second high-temperature-resistant insulating layer is arranged on the riveting block to prevent the riveting block from being conducted with the shell, and / or a third high-temperature-resistant insulating layer is arranged on the pole to prevent the pole from being conducted with the shell. The utility model also provides a battery which comprises a battery cell and the secondary short circuit prevention structure with the riveting block, and the battery cell is positioned in the shell. The battery is helpful for preventing secondary short circuit and improving safety.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, in particular to a secondary short circuit prevention structure with a riveted block and a battery. Background Art

[0002] Once thermal runaway (such as short circuit) occurs in the battery cells inside the new energy battery, high heat will be generated. When the high heat is transferred to the pole, the outer plastic and / or inner plastic will melt, which may cause the positive and negative poles to short-circuit, causing a secondary short circuit. Utility Model Content

[0003] One purpose of the present utility model is to provide a secondary short circuit prevention structure with a riveted block, which can help prevent secondary short circuits.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] Provided is a secondary short circuit prevention structure with a riveted block, comprising:

[0006] a housing, wherein a first through hole is formed in the housing;

[0007] a riveting block, wherein a second through hole is formed on the riveting block and the riveting block is located on one side of the housing;

[0008] a pole, one end of which passes through the first through hole and the second through hole in sequence and is riveted to the inner wall of the second through hole;

[0009] The housing has a first high-temperature resistant insulating layer to prevent the rivet block or the pole from being electrically connected to the housing, and / or the rivet block has a second high-temperature resistant insulating layer to prevent the rivet block from being electrically connected to the housing, and / or the pole has a third high-temperature resistant insulating layer to prevent the pole from being electrically connected to the housing;

[0010] The insulating sealing assembly is sandwiched between the riveting block and the shell and between the pole and the shell.

[0011] Optionally, a positioning groove is formed on one side of the housing, the first through hole is formed at the bottom of the positioning groove, the rivet block is partially located in the positioning groove, and the first high-temperature resistant insulating layer includes a first-region high-temperature resistant insulating layer, and the first-region high-temperature resistant insulating layer is located on the sidewall and bottom of the positioning groove;

[0012] And / or, the first high temperature resistant insulation layer includes a second region high temperature resistant insulation layer, and the second region high temperature resistant insulation layer is located on the inner wall of the first through hole;

[0013] And / or, the pole includes a connecting portion, the connecting portion is located on a side of the shell where the rivet block is not provided, the first high-temperature resistant insulation layer includes a third-zone high-temperature resistant insulation layer, and the third-zone high-temperature resistant insulation layer is located on the first end face of the shell around the first through hole facing the connecting portion.

[0014] Optionally, the second high-temperature resistant insulating layer is located on a first side surface of the rivet block and a second end surface of the rivet block facing the housing.

[0015] Optionally, the pole includes an inserting portion, the inserting portion is inserted into the first through hole, the third high-temperature resistant insulation layer includes a fourth-region high-temperature resistant insulation layer, and the fourth-region high-temperature resistant insulation layer is located on a side wall of the inserting portion;

[0016] And / or, the pole includes a connecting portion, the connecting portion is located on a side of the shell where the rivet block is not provided, the third high-temperature resistant insulation layer includes a fifth-zone high-temperature resistant insulation layer, and the fifth-zone high-temperature resistant insulation layer is located on the third end face of the connecting portion facing the shell.

[0017] Optionally, the thickness of the first high temperature resistant insulating layer is greater than 0.01 mm;

[0018] And / or, the thickness of the second high temperature resistant insulating layer is greater than 0.01 mm;

[0019] And / or, the thickness of the third high-temperature resistant insulation layer is greater than 0.01 mm.

[0020] Optionally, the first high temperature resistant insulating layer is an aluminum oxide layer formed by electroplating;

[0021] And / or, the second high temperature resistant insulating layer is an aluminum oxide layer formed by electroplating;

[0022] And / or, the third high-temperature resistant insulating layer is an aluminum oxide layer formed by electroplating.

[0023] Optionally, the insulating sealing assembly includes a first insulating member, wherein the first insulating member is at least partially sandwiched between the riveting block and the housing;

[0024] And / or, the insulating sealing assembly further includes a second insulating member, the second insulating member is located on a side of the housing where the rivet block is not provided, and the second insulating member is at least partially sandwiched between the pole and the housing.

[0025] Optionally, the insulating sealing assembly further includes a sealing ring, which is sleeved on the pole and at least partially sandwiched between the pole and the inner wall of the first through hole.

[0026] Optionally, the housing includes a cover plate and a shell, and the pole is inserted into the first through hole of the cover plate, or the pole is inserted into the first through hole of the shell.

[0027] Another object of the present invention is to provide a battery that can help prevent secondary short circuits.

[0028] To achieve this purpose, the present invention adopts the following technical solutions:

[0029] A battery is provided, comprising a battery core and the aforementioned secondary short circuit prevention structure with riveted blocks, wherein the battery core is located in the housing.

[0030] Beneficial effects of the utility model:

[0031] The utility model provides a secondary short circuit prevention structure with a riveted block, comprising a shell, a riveted block, a pole and an insulating sealing assembly. A first through hole is provided on the shell, a second through hole is provided on the riveted block, and the riveted block is located on one side of the shell. One end of the pole passes through the first through hole and the second through hole in sequence and is riveted to the inner wall of the second through hole. The insulating sealing assembly is clamped between the riveted block and the shell, and between the pole and the shell. The shell has a first high-temperature resistant insulating layer to prevent the riveted block or the pole from being electrically connected to the shell, and / or the riveted block has a second high-temperature resistant insulating layer to prevent the riveted block from being electrically connected to the shell, and / or the pole has a third high-temperature resistant insulating layer to prevent the pole from being electrically connected to the shell. Even if the insulating sealing assembly melts and fails in a high-temperature environment, the first high-temperature resistant insulating layer and the second high-temperature resistant insulating layer can help prevent contact between the riveted block and the shell, causing a secondary short circuit, and the first high-temperature resistant insulating layer and the third high-temperature resistant insulating layer can help prevent contact between the pole and the shell, causing a secondary short circuit. Therefore, the anti-secondary short circuit structure with the riveted blocks can help prevent secondary short circuits and improve safety.

[0032] The utility model also provides a battery, comprising a battery core and the aforementioned secondary short circuit prevention structure with riveted blocks, wherein the battery core is located in a housing. The battery can help prevent secondary short circuits and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of a secondary short circuit prevention structure with a riveted block provided by an embodiment of the present utility model;

[0034] Figure 2 This is an exploded view of the secondary short circuit prevention structure with riveted blocks provided by an embodiment of the utility model;

[0035] Figure 3 This is a cross-sectional view of a secondary short circuit prevention structure (including a first high-temperature resistant insulating layer) with a riveted block provided by an embodiment of the present utility model;

[0036] Figure 4 It is a cross-sectional view of a secondary short circuit prevention structure (including a second high-temperature resistant insulation layer and a third high-temperature resistant insulation layer) with a riveted block provided by an embodiment of the present utility model.

[0037] In the picture:

[0038] 1. Riveting block; 11. Second high-temperature resistant insulation layer; 12. First side surface; 13. Second end surface;

[0039] 2. Pole; 21. Connecting portion; 211. Third end surface; 212. Fifth zone high-temperature resistant insulation layer; 22. Insertion portion; 221. Fourth zone high-temperature resistant insulation layer; 23. Riveted portion;

[0040] 3. Cover plate; 31. First high-temperature resistant insulating layer; 311. First zone high-temperature resistant insulating layer; 312. Second zone high-temperature resistant insulating layer; 313. Third zone high-temperature resistant insulating layer; 32. First end surface;

[0041] 4. First insulating part; 5. Second insulating part; 6. Sealing ring. DETAILED DESCRIPTION

[0042] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention, and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of it.

[0043] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0044] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0045] Once thermal runaway (such as short circuit) occurs in the battery cells inside the new energy battery, high heat will be generated. When the high heat is transferred to the pole, the outer plastic and / or inner plastic will melt, which may cause the positive and negative poles to short-circuit, causing a secondary short circuit.

[0046] This embodiment provides a secondary short circuit prevention structure with a riveted block, which helps prevent secondary short circuits in batteries with riveted blocks and improves their safety performance.

[0047] like Figures 1-4 As shown, the anti-secondary short circuit structure with a riveted block in this embodiment includes a shell, a riveted block 1, a pole 2 and an insulating sealing assembly. Particularly, a first through hole is provided on the shell, a second through hole is provided on the riveted block 1, and the riveted block 1 is located on one side of the shell. One end of the pole 2 passes through the first through hole and the second through hole in sequence and is riveted to the inner wall of the second through hole. The insulating sealing assembly is clamped between the riveted block 1 and the shell and between the pole 2 and the shell. The shell has a first high-temperature resistant insulating layer 31 to prevent the riveted block 1 or the pole 2 from being conductive to the shell, and / or the riveted block 1 has a second high-temperature resistant insulating layer 11 to prevent the riveted block 1 from being conductive to the shell, and / or the pole 2 has a third high-temperature resistant insulating layer to prevent the pole 2 from being conductive to the shell.

[0048] Even if the insulating seal assembly melts and fails in a high-temperature environment, the first high-temperature-resistant insulating layer 31 and the second high-temperature-resistant insulating layer 11 can help prevent contact between the riveted block 1 and the housing, which could cause a secondary short circuit. The first high-temperature-resistant insulating layer 31 and the third high-temperature-resistant insulating layer can also help prevent contact between the pole 2 and the housing, which could cause a secondary short circuit. Therefore, this secondary short-circuit prevention structure with the riveted block can help prevent secondary short circuits and improve safety.

[0049] like Figure 3 As shown, optionally, a positioning groove is formed on one side of the housing, and a first through-hole is formed at the bottom of the positioning groove. The riveted block 1 is partially located within the positioning groove. The first high-temperature-resistant insulating layer 31 includes a first-region high-temperature-resistant insulating layer 311. The first-region high-temperature-resistant insulating layer 311 is located on the sidewalls and bottom of the positioning groove to ensure that the sidewalls and bottom of the positioning groove are insulated from the riveted block 1. Optionally, the connection between the sidewalls and bottom of the positioning groove also has a high-temperature-resistant insulating layer.

[0050] Optionally, the first high temperature resistant insulating layer 31 includes a second zone high temperature resistant insulating layer 312 , which is located on the inner wall of the first through hole to prevent the inner wall of the first through hole from contacting the pole 2 in a high temperature environment, causing a secondary short circuit.

[0051] Optionally, the pole 2 includes a connecting portion 21, which is located on a side of the shell where the rivet block 1 is not provided, and the first high-temperature resistant insulating layer 31 includes a third-zone high-temperature resistant insulating layer 313, and the third-zone high-temperature resistant insulating layer 313 is located on the first end face 32 of the shell surrounding the first through hole facing the connecting portion 21 to prevent a short circuit between the third end face 211 of the connecting portion 21 and the first end face 32 of the shell in a high-temperature environment.

[0052] Optionally, the first zone high temperature resistant insulation layer 311, the second zone high temperature resistant insulation layer 312, and the third zone high temperature resistant insulation layer 313 are connected in sequence, and there is no interruption at the regional connection to prevent the pole 2 or the rivet block 1 at the discontinuity from contacting the shell in a high temperature environment, causing a secondary short circuit.

[0053] like Figure 4 As shown, optionally, a second high-temperature-resistant insulating layer 11 is located between the first side surface 12 of the rivet block 1 and the second end surface 13 of the rivet block 1 facing the housing, ensuring insulation between the first side surface 12 of the rivet block 1 and the sidewalls of the positioning groove, and between the second end surface 13 of the rivet block 1 facing the housing and the bottom of the positioning groove. Optionally, the connection between the first side surface 12 of the rivet block 1 and the second end surface 13 of the rivet block 1 facing the housing also has a high-temperature-resistant insulating layer.

[0054] Optionally, the pole 2 includes an insertion portion 22, and the pole 2 also includes a riveted portion 23. The riveted portion 23, the insertion portion 22, and the connecting portion 21 are sequentially connected along the axial direction of the pole 2. Optionally, the riveted portion 23 is located in the second through-hole, the insertion portion 22 is located in the first through-hole, and the diameter of the connecting portion 21 is larger than the diameters of the insertion portion 22 and the riveted portion 23. Optionally, in this embodiment, the connecting portion 21 is used to electrically connect to the battery cell in the battery. The riveted portion 23 is located outside the battery, which helps to reduce the difficulty of riveting and ensure the quality of riveting.

[0055] Optionally, the insertion portion 22 is inserted into the first through hole, and the third high-temperature resistant insulation layer includes a fourth-area high-temperature resistant insulation layer 221. The fourth-area high-temperature resistant insulation layer 221 is located on the side wall of the insertion portion 22 to prevent the insertion portion 22 from contacting the inner wall of the first through hole in a high-temperature environment, causing a secondary short circuit.

[0056] Optionally, the third high-temperature resistant insulation layer includes a fifth-zone high-temperature resistant insulation layer 212, which is located on the third end face 211 of the connecting part 21 facing the outer shell to prevent the third end face 211 of the connecting part 21 from contacting the first end face 32 of the outer shell in a high-temperature environment, causing a secondary short circuit.

[0057] Optionally, there is no discontinuity at the connection between the fourth zone high temperature resistant insulation layer 221 and the fifth zone high temperature resistant insulation layer 212 to prevent the pole 2 from contacting the housing at the discontinuity and causing a secondary short circuit.

[0058] Optionally, a first high-temperature-resistant insulating layer 31 is provided on the housing, a second high-temperature-resistant insulating layer 11 is provided on the riveted block 1, and a third high-temperature-resistant insulating layer is provided on the pole 2. Alternatively, only one of the three may be implemented, while the other two are not, or two may be implemented while the other is not, or all three may be implemented. Optionally, the above-mentioned multiple different implementation combinations may be implemented in the positive electrode region, the negative electrode region, or both the positive and negative electrode regions.

[0059] Optionally, the thickness of the first high-temperature-resistant insulating layer 31 is greater than 0.01 mm, the thickness of the second high-temperature-resistant insulating layer 11 is greater than 0.01 mm, and the thickness of the third high-temperature-resistant insulating layer is greater than 0.01 mm. A low thickness of the high-temperature-resistant insulating layer may affect the insulation effect. The upper limit of the thickness depends on the spatial design of the battery to balance energy density and safety performance.

[0060] Optionally, the first high-temperature-resistant insulating layer 31 is an aluminum oxide layer formed by electroplating, the second high-temperature-resistant insulating layer 11 is an aluminum oxide layer formed by electroplating, and the third high-temperature-resistant insulating layer is an aluminum oxide layer formed by electroplating. Aluminum oxide has excellent insulating properties and is resistant to high temperatures. The aluminum oxide layer formed by electroplating can ensure structural strength and connection strength. Electroplating is a very mature process method that is conducive to controlling costs and ensuring process quality.

[0061] Optionally, the insulating seal assembly includes a first insulating member 4, which is at least partially sandwiched between the rivet block 1 and the housing. Optionally, the base plate of the first insulating member 4 is sandwiched between the bottom of the positioning groove and the second end face 13 of the rivet block 1. Optionally, the first insulating member 4 further includes a side plate, which is disposed around the periphery of the base plate and covers the first side surface 12 of the rivet block 1, i.e., the side surface of the rivet block 1, to ensure insulation between the rivet block 1 and the housing.

[0062] Optionally, the insulating seal assembly further includes a second insulating member 5, which is located on the side of the housing where the rivet block 1 is not provided. The second insulating member 5 is at least partially sandwiched between the pole 2 and the housing to prevent a short circuit between the connection portion 21 of the pole 2 and the housing. Optionally, in this embodiment, the first insulating member 4 is made of outer plastic, and the second insulating member 5 is made of inner plastic.

[0063] Optionally, the insulating seal assembly further includes a sealing ring 6, which is sleeved on the pole 2. The sealing ring 6 is at least partially sandwiched between the pole 2 and the inner wall of the first through hole to block the gap between the pole 2 and the inner wall of the first through hole. Optionally, the sealing ring 6 is also partially sandwiched between the third end face 211 of the connecting portion 21 and the first end face 32 of the housing, thereby helping to fix the position of the pole 2 relative to the housing and providing insulation.

[0064] Optionally, the outer shell includes a cover plate 3 and a shell, and the pole 2 is inserted into the first through hole of the cover plate 3, or the pole 2 is inserted into the first through hole of the shell. In this embodiment, the pole 2 is inserted into the first through hole of the cover plate 3. Optionally, a first high-temperature resistant insulating layer 31 can be provided on the cover plate 3 or the shell near the positive pole 2, or a first high-temperature resistant insulating layer 31 can be provided on the cover plate 3 or the shell near the negative pole 2, or a first high-temperature resistant insulating layer 31 can be provided on the cover plate 3 or the shell near the positive pole 2 and a first high-temperature resistant insulating layer 31 can be provided on the cover plate 3 or the shell near the negative pole 2. Optionally, a second high-temperature resistant insulating layer 11 can be provided on the positive riveted block 1, or a second high-temperature resistant insulating layer 11 can be provided on the negative riveted block 1, or a second high-temperature resistant insulating layer 11 can be provided on the positive riveted block 1 and a second high-temperature resistant insulating layer 11 can be provided on the negative riveted block 1. Optionally, a third high-temperature resistant insulating layer may be provided on the positive electrode post 2, or on the negative electrode post 2, or both. The electrode post 2 provided with the third high-temperature resistant insulating layer, the rivet block 1 provided with the second high-temperature resistant insulating layer 11, and the cover plate 3 or housing provided with the first high-temperature resistant insulating layer 31 may all be located in the same polar region, or in different polar regions.

[0065] This embodiment also provides a battery comprising a battery cell and the aforementioned secondary short circuit prevention structure with riveted blocks, wherein the battery cell is located within a housing. Optionally, in this embodiment, the battery is a prismatic battery, although in other embodiments, a cylindrical battery is also possible. This battery can help prevent secondary short circuits and improve safety.

[0066] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. The anti-secondary short circuit structure with riveted blocks is characterized by: include: a housing, wherein a first through hole is formed in the housing; A riveting block (1), wherein a second through hole is formed on the riveting block (1), and the riveting block (1) is located on one side of the housing; A pole (2), one end of the pole (2) passes through the first through hole and the second through hole in sequence and is riveted to the inner wall of the second through hole; The housing has a first high-temperature resistant insulating layer (31) to prevent the rivet block (1) or the pole (2) from being electrically connected to the housing, and / or the rivet block (1) has a second high-temperature resistant insulating layer (11) to prevent the rivet block (1) from being electrically connected to the housing, and / or the pole (2) has a third high-temperature resistant insulating layer to prevent the pole (2) from being electrically connected to the housing; An insulating sealing assembly is sandwiched between the riveting block (1) and the housing, and between the pole (2) and the housing.

2. The secondary short circuit prevention structure with riveted blocks according to claim 1, characterized in that: A positioning groove is provided on one side of the housing, the bottom of the positioning groove is provided with the first through hole, the riveting block (1) is partially located in the positioning groove, the first high-temperature resistant insulation layer (31) includes a first-area high-temperature resistant insulation layer (311), and the first-area high-temperature resistant insulation layer (311) is located on the side wall and the bottom of the positioning groove; And / or, the first high-temperature resistant insulation layer (31) includes a second-region high-temperature resistant insulation layer (312), and the second-region high-temperature resistant insulation layer (312) is located on the inner wall of the first through hole; And / or, the pole (2) includes a connecting portion (21), the connecting portion (21) is located on a side of the housing where the rivet block (1) is not provided, the first high-temperature resistant insulation layer (31) includes a third-zone high-temperature resistant insulation layer (313), and the third-zone high-temperature resistant insulation layer (313) is located on a first end surface (32) of the housing surrounding the first through hole and facing the connecting portion (21).

3. The secondary short circuit prevention structure with riveted blocks according to claim 1, characterized in that: The second high-temperature resistant insulating layer (11) is located on a first side surface (12) of the riveted block (1) and a second end surface (13) of the riveted block (1) facing the housing.

4. The secondary short circuit prevention structure with riveted blocks according to claim 1, characterized in that: The pole (2) comprises an inserting portion (22), the inserting portion (22) is inserted into the first through hole, the third high-temperature resistant insulation layer comprises a fourth-area high-temperature resistant insulation layer (221), and the fourth-area high-temperature resistant insulation layer (221) is located on a side wall of the inserting portion (22); And / or, the pole (2) includes a connecting portion (21), the connecting portion (21) is located on a side of the housing where the rivet block (1) is not provided, the third high-temperature resistant insulation layer includes a fifth-zone high-temperature resistant insulation layer (212), and the fifth-zone high-temperature resistant insulation layer (212) is located on a third end face (211) of the connecting portion (21) facing the housing.

5. The secondary short circuit prevention structure with riveted blocks according to any one of claims 1 to 4, characterized in that: The thickness of the first high-temperature resistant insulating layer (31) is greater than 0.01 mm; and / or the thickness of the second high temperature resistant insulating layer (11) is greater than 0.01 mm; And / or, the thickness of the third high-temperature resistant insulation layer is greater than 0.01 mm.

6. The secondary short circuit prevention structure with riveted blocks according to any one of claims 1 to 4, characterized in that: The first high-temperature resistant insulating layer (31) is an aluminum oxide layer formed by electroplating; And / or, the second high-temperature resistant insulating layer (11) is an aluminum oxide layer formed by electroplating; And / or, the third high-temperature resistant insulating layer is an aluminum oxide layer formed by electroplating.

7. The secondary short circuit prevention structure with riveted blocks according to any one of claims 1 to 4, characterized in that: The insulating sealing assembly comprises a first insulating member (4), wherein the first insulating member (4) is at least partially sandwiched between the riveting block (1) and the housing; And / or, the insulating sealing assembly further comprises a second insulating member (5), the second insulating member (5) being located on a side of the housing where the rivet block (1) is not provided, and the second insulating member (5) being at least partially sandwiched between the pole (2) and the housing.

8. The secondary short circuit prevention structure with riveted blocks according to any one of claims 1 to 4, characterized in that: The insulating sealing assembly further comprises a sealing ring (6), which is sleeved on the pole (2), and at least partially sandwiched between the pole (2) and the inner wall of the first through hole.

9. The secondary short circuit prevention structure with riveted blocks according to any one of claims 1 to 4, characterized in that: The housing comprises a cover plate (3) and a shell, and the pole (2) is plugged into the first through hole of the cover plate (3), or the pole (2) is plugged into the first through hole of the shell.

10. A battery, characterized in that The invention comprises a battery core and a secondary short circuit prevention structure with a riveted block as claimed in any one of claims 1 to 9, wherein the battery core is located in the housing.

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