Battery flanging and riveting secondary short circuit prevention structure and battery

Abstract

The utility model relates to the technical field of energy storage equipment, in particular to a battery flanging and riveting secondary short circuit prevention structure and a battery, and the battery flanging and riveting secondary short circuit prevention structure comprises a shell, a pole and an insulation sealing assembly. A through hole is formed in the shell, a riveting tubular structure surrounding the through hole is arranged on the shell, and the riveting tubular structure and the through hole are coaxially arranged. The pole is provided with an annular protruding part, the annular protruding part is arranged in a protruding mode in the radial direction of the pole, the end, in the axial direction of the pole, of the pole is inserted into the through hole, the first end face of the annular protruding part abuts against the first face, located around the through hole and perpendicular to the axial direction of the pole, of the shell, and the riveting pipe-shaped structure wraps the side face and the second end face of the annular protruding part in a riveting and bending mode. A first high-temperature-resistant insulating layer is arranged on the side wall of the pole, and / or a second high-temperature-resistant insulating layer is arranged on the surface, facing the pole, of the shell. The insulation sealing assembly at least partially sleeves the side wall of the pole, and the insulation sealing assembly is at least partially clamped between the pole and the shell. The battery comprises a battery cell and the battery flanging and riveting secondary short circuit prevention structure.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, in particular to a battery flanging riveting secondary short circuit prevention structure 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 utility model is to provide a battery flange riveting secondary short circuit prevention structure, which can help prevent secondary short circuit.

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

[0005] A battery flanging riveting secondary short circuit prevention structure is provided, comprising:

[0006] A housing, wherein a through hole is formed on the housing, and a riveted tube-shaped structure is provided on the housing, wherein the riveted tube-shaped structure is coaxially arranged with the through hole and surrounds the through hole;

[0007] A pole having an annular protrusion that protrudes radially along the pole, one axial end of the pole being inserted into the through-hole, a first end face of the annular protrusion abutting a first face of the housing located around the through-hole and perpendicular to the axial direction of the pole, and a riveted tube-shaped structure that is riveted, bent, and covers the side face and second end face of the annular protrusion;

[0008] The side wall of the pole is provided with a first high-temperature resistant insulation layer, and / or the surface of the housing facing the pole is provided with a second high-temperature resistant insulation layer;

[0009] An insulating sealing assembly is at least partially sleeved on the side wall of the pole, and at least partially sandwiched between the pole and the shell.

[0010] Optionally, the first high-temperature resistant insulation layer includes a first-region high-temperature resistant insulation layer, and the first-region high-temperature resistant insulation layer is located on the first end surface;

[0011] 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 a side surface of the annular protrusion;

[0012] And / or, the first high-temperature resistant insulation layer includes a third-region high-temperature resistant insulation layer, and the third-region high-temperature resistant insulation layer is located on the second end surface.

[0013] Optionally, the pole includes a first portion, the first portion is located at one end of the annular protrusion along the axial direction of the pole, the end surface of the first portion is used for current conduction, and the first high-temperature resistant insulating layer includes a fourth-region high-temperature resistant insulating layer, and the fourth-region high-temperature resistant insulating layer is located on a sidewall of the first portion;

[0014] And / or, the pole includes a second part, which is located at the other end of the annular protrusion along the axial direction of the pole, the end surface of the second part is used for current conduction, and the first 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 side wall of the second part.

[0015] Optionally, the second high-temperature resistant insulation layer includes a sixth-area high-temperature resistant insulation layer, and the sixth-area high-temperature resistant insulation layer is located on the inner wall of the riveted tube-shaped structure;

[0016] And / or, the second high-temperature resistant insulation layer includes a seventh-region high-temperature resistant insulation layer, and the seventh-region high-temperature resistant insulation layer is located on the first surface;

[0017] And / or, the second high-temperature resistant insulating layer includes an eighth-region high-temperature resistant insulating layer, and the eighth-region high-temperature resistant insulating layer is located on the inner wall of the through hole;

[0018] And / or, the second high temperature resistant insulation layer includes a ninth zone high temperature resistant insulation layer, the ninth zone high temperature resistant insulation layer is located on a second surface of the housing around the through hole and perpendicular to the axial direction of the pole, the second surface being opposite to the first surface.

[0019] Optionally, the thickness of the first high-temperature resistant insulation layer is greater than 0.01 mm, and / or the thickness of the second 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, and / or the second high-temperature resistant insulating layer is an aluminum oxide layer formed by electroplating.

[0021] Optionally, the insulating sealing assembly includes a first insulating member, which is sleeved on the pole and at least partially sandwiched between the pole and the riveted tube structure.

[0022] Optionally, the insulating sealing assembly further includes a sealing ring, which is sleeved on the pole, and the sealing ring portion is sandwiched between the pole and the inner wall of the through hole.

[0023] Optionally, the housing includes a cover plate and a shell, and the pole is inserted into the through hole of the cover plate, or the pole is inserted into the through hole of the shell.

[0024] Another object of the present invention is to provide a battery that can help prevent secondary short circuits.

[0025] To achieve this purpose, the present invention adopts the following technical solutions:

[0026] A battery is provided, comprising a battery core and the battery flanging riveting secondary short circuit prevention structure, wherein the battery core is located in the housing.

[0027] Beneficial effects of the utility model:

[0028] The utility model provides a battery flange riveting secondary short circuit prevention structure, comprising a housing, a terminal, and an insulating seal assembly. The housing has a through-hole formed therein, and a riveted tube-shaped structure disposed coaxially with and surrounding the through-hole. The terminal has an annular protrusion extending radially from the terminal. One axial end of the terminal is inserted into the through-hole, and a first end face of the annular protrusion abuts a first surface of the housing located perpendicular to the terminal axis and surrounding the through-hole. The riveted tube-shaped structure is riveted and bent to cover the side and second end faces of the annular protrusion. A first high-temperature-resistant insulating layer is disposed on the side wall of the terminal, and / or a second high-temperature-resistant insulating layer is disposed on the surface of the housing facing the terminal. The insulating seal assembly is at least partially sheathed over the side wall of the terminal and at least partially sandwiched between the terminal and the housing. When the battery temperature is very high, the insulating seal assembly may melt and fail. However, the first and / or second high-temperature-resistant insulating layers help prevent contact between the terminal and the housing, thereby preventing secondary short circuits and improving safety.

[0029] The utility model provides a battery, comprising a battery core and the battery flange riveting secondary short circuit prevention structure, 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

[0030] Figure 1 This is a schematic structural diagram of a battery flanging riveting secondary short circuit prevention structure provided by an embodiment of the present utility model;

[0031] Figure 2 This is an exploded view of the battery flange riveting secondary short circuit prevention structure provided by an embodiment of the utility model;

[0032] Figure 3 This is a cross-sectional view of a battery flange riveted secondary short circuit prevention structure (including a first high-temperature resistant insulating layer) provided by an embodiment of the present utility model;

[0033] Figure 4 It is a cross-sectional view of a battery flange riveted secondary short circuit prevention structure (including a second high-temperature resistant insulating layer) provided by an embodiment of the utility model.

[0034] In the picture:

[0035] 1. Cover plate; 11. Riveted tube structure; 12. First surface; 13. Second surface;

[0036] 2. Pole; 21. Annular protrusion; 211. First end face; 212. Second end face;

[0037] 3. First high-temperature resistant insulation layer; 31. First zone high-temperature resistant insulation layer; 32. Second zone high-temperature resistant insulation layer; 33. Third zone high-temperature resistant insulation layer; 34. Fourth zone high-temperature resistant insulation layer; 35. Fifth zone high-temperature resistant insulation layer;

[0038] 4. Second high-temperature resistant insulation layer; 41. Sixth zone high-temperature resistant insulation layer; 42. Seventh zone high-temperature resistant insulation layer; 43. Eighth zone high-temperature resistant insulation layer; 44. Ninth zone high-temperature resistant insulation layer;

[0039] 5. Outer plastic; 6. Sealing ring; 7. Inner plastic. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] This embodiment provides a battery flanging riveting secondary short circuit prevention structure, which helps to prevent secondary short circuits from occurring in batteries with flanging riveting styles, thereby improving their safety performance.

[0045] like Figure 1-Figure 4 As shown, the battery flange riveting secondary short circuit prevention structure of this embodiment includes a housing, a terminal 2, and an insulating seal assembly. The housing is provided with a through-hole and a riveted tube-shaped structure 11. The riveted tube-shaped structure 11 is coaxially arranged with and surrounds the through-hole. The terminal 2 has an annular protrusion 21 that projects radially from the terminal 2. One axial end of the terminal 2 is inserted into the through-hole. The first end face 211 of the annular protrusion 21 abuts the first face 12 of the housing located around the through-hole and perpendicular to the axial direction of the terminal 2. The riveted tube-shaped structure 11 is riveted and bent to cover the side face and second end face 212 of the annular protrusion 21. The side wall of the terminal 2 has a first high-temperature-resistant insulating layer 3, and / or the surface of the housing facing the terminal 2 has a second high-temperature-resistant insulating layer 4. The insulating seal assembly is at least partially sleeved on the side wall of the terminal 2 and at least partially sandwiched between the terminal 2 and the housing.

[0046] When the battery temperature is very high, the insulating sealing assembly may melt and fail, but the first high-temperature resistant insulating layer 3 and / or the second high-temperature resistant insulating layer 4 help prevent the pole 2 from contacting the shell, thereby preventing secondary short circuit and improving safety.

[0047] like Figure 3 As shown, optionally, the first high temperature resistant insulation layer 3 includes a first zone high temperature resistant insulation layer 31, and the first zone high temperature resistant insulation layer 31 is located on the first end surface 211 to prevent the first end surface 211 of the annular protrusion 21 from contacting the first surface 12 of the cover plate 1 in a high temperature environment to cause a secondary short circuit.

[0048] Optionally, the first high-temperature resistant insulation layer 3 includes a second-zone high-temperature resistant insulation layer 32, and the second-zone high-temperature resistant insulation layer 32 is located on the side of the annular protrusion 21 to prevent the side of the annular protrusion 21 from contacting the inner wall of the riveted tube structure 11 of the cover plate 1 under high-temperature environment, causing a secondary short circuit.

[0049] Optionally, the first high-temperature resistant insulation layer 3 includes a third-zone high-temperature resistant insulation layer 33, and the third-zone high-temperature resistant insulation layer 33 is located on the second end face 212 to prevent the second end face 212 of the annular protrusion 21 from contacting the inner wall of the riveted tube structure 11 of the cover plate 1 under high-temperature environment, causing a secondary short circuit.

[0050] Optionally, the pole 2 includes a first portion, located at one end of the annular protrusion 21 along the axial direction of the pole 2. The end surface of the first portion is used for current conduction. The first high-temperature-resistant insulating layer 3 includes a fourth region of high-temperature-resistant insulating layer 34, which is located on the sidewalls of the first portion. Optionally, the end surface of the first portion is used for electrical connection to the outside world. In high-temperature environments, the sidewalls of the first portion may contact the sidewalls of the opening formed by the bending of the riveted tube structure 11. Therefore, the fourth region of high-temperature-resistant insulating layer 34 prevents the pole 2 from contacting the outer casing at this location, helping to avoid secondary short circuits.

[0051] Optionally, the pole 2 includes a second portion, which is located at the other end of the annular protrusion 21 along the axial direction of the pole 2. The end surface of the second portion is used for current conduction. The first high-temperature-resistant insulating layer 3 includes a fifth-zone high-temperature-resistant insulating layer 35, which is located on the sidewall of the second portion. Optionally, the end surface of the second portion is used for electrical connection to the battery cell inside the battery. In high-temperature environments, the sidewall of the second portion may contact the inner wall of the through-hole. Therefore, the fifth-zone high-temperature-resistant insulating layer 35 can prevent the pole 2 from contacting the outer casing at this location, helping to avoid secondary short circuits.

[0052] Optionally, the fourth zone high temperature resistant insulation layer 34, the third zone high temperature resistant insulation layer 33, the second zone high temperature resistant insulation layer 32, the first zone high temperature resistant insulation layer 31, and the fifth zone high temperature resistant insulation layer 35 are connected in sequence, with no gaps between adjacent areas to avoid secondary short circuits easily forming at the connections between the areas.

[0053] Optionally, the edges of the end faces of the first part and the second part are chamfered, and the first high-temperature resistant insulating layer 3 also covers the chamfered annular surfaces at both ends of the pole 2 to prevent the shell from deforming at high temperature and contacting the chamfered annular surfaces.

[0054] like Figure 4 As shown, to further prevent secondary short circuits, the second high-temperature-resistant insulating layer 4 optionally includes a sixth-zone high-temperature-resistant insulating layer 41. The sixth-zone high-temperature-resistant insulating layer 41 is located on the inner wall of the riveted tubular structure 11, that is, the sidewall of the first portion of the outer shell corresponding to the outer shell near the pole 2, as well as the second end face 212 and side portions of the annular protrusion 21, are all provided with the sixth-zone high-temperature-resistant insulating layer 41. Optionally, in this embodiment, after riveting, the riveted tubular structure 11 forms connected tubular and annular segments. The inner wall of the tubular segment and the side of the annular segment facing the pole 2 are both provided with the sixth-zone high-temperature-resistant insulating layer 41. This prevents the inner wall of the tubular segment and the side of the annular segment facing the pole 2 from contacting the pole 2 in a high-temperature environment, thereby causing a secondary short circuit.

[0055] Optionally, the second high temperature resistant insulation layer 4 includes a seventh zone high temperature resistant insulation layer 42, which is located on the first surface 12 to prevent the first surface 12 from contacting the first end surface 211 of the annular protrusion 21 in a high temperature environment to prevent secondary short circuit.

[0056] Optionally, the second high temperature resistant insulation layer 4 includes an eighth zone high temperature resistant insulation layer 43, which is located on the inner wall of the through hole to prevent the second part of the pole 2 from moving and contacting the inner wall of the through hole in a high temperature environment, thereby preventing secondary short circuit.

[0057] Optionally, the second high-temperature-resistant insulating layer 4 includes a ninth-area high-temperature-resistant insulating layer 44. The ninth-area high-temperature-resistant insulating layer 44 is located on the second surface 13 of the housing, which is perpendicular to the axial direction of the pole 2 and is located around the through-hole. The second surface 13 is opposite the first surface 12 to prevent deformation of the housing in high-temperature environments. This prevents bending in the annular area where the first and second surfaces 12, 13 of the housing are located, causing the second surface 13 to contact the sidewall of the second portion of the pole 2, resulting in a secondary short circuit. Optionally, a positioning groove is defined on one side of the housing where the second surface 13 is located. The second surface 13 is located at the bottom of the positioning groove, and the ninth-area high-temperature-resistant insulating layer 44 is laid at the bottom of the positioning groove.

[0058] Optionally, the sixth zone high temperature resistant insulation layer 41, the seventh zone high temperature resistant insulation layer 42, the eighth zone high temperature resistant insulation layer 43 and the ninth zone high temperature resistant insulation layer 44 are connected in sequence, and there is no interruption at the regional connection to prevent the pole 2 from contacting the shell at the interruption, causing a secondary short circuit.

[0059] In some embodiments, the first high-temperature-resistant insulating layer 3 is provided only on the pole 2, and the second high-temperature-resistant insulating layer 4 is not provided on the outer shell. In other embodiments, the second high-temperature-resistant insulating layer 4 is provided only on the outer shell, and the first high-temperature-resistant insulating layer 3 is not provided on the pole 2. In still other embodiments, both the first high-temperature-resistant insulating layer 3 is provided on the pole 2 and the second high-temperature-resistant insulating layer 4 is provided on the outer shell.

[0060] Optionally, the thickness of the first high-temperature resistant insulating layer 3 is greater than 0.01 mm. Optionally, the thickness of the second high-temperature resistant insulating layer 4 is greater than 0.01 mm. If the thickness of the high-temperature resistant insulating layer is too low, it will affect the insulation effect. The upper limit of the thickness depends on the spatial design of the battery to balance the energy density and safety performance.

[0061] Optionally, the first high-temperature-resistant insulating layer 3 is an aluminum oxide layer formed by electroplating, and optionally, the second high-temperature-resistant insulating layer 4 is an aluminum oxide layer formed by electroplating. Aluminum oxide has good insulation properties and is resistant to high temperatures. The aluminum oxide layer formed by electroplating can ensure structural strength and connection strength.

[0062] Optionally, the insulating seal assembly includes a first insulating member, which is sleeved on the pole 2 and at least partially sandwiched between the pole 2 and the riveted tube structure 11. Optionally, the first insulating member is also partially sandwiched between the annular protrusion 21 and the first surface 12.

[0063] Optionally, the insulating seal assembly further includes a second insulating member, which is disposed on the side of the second surface 13 of the housing to prevent this side of the housing from contacting the pole 2 or the tab. Optionally, in this embodiment, the first insulating member is an outer plastic 5, and the second insulating member is an inner plastic 7.

[0064] Optionally, the insulating seal assembly further includes a sealing ring 6, which is sleeved on the pole 2, with a portion of the sealing ring 6 sandwiched between the pole 2 and the inner wall of the through hole. Optionally, a portion of the sealing ring 6 is sandwiched between the first end surface 211 of the annular protrusion 21 and the first surface 12 of the housing, with the sealing ring 6 being close to the base of the pole 2.

[0065] Optionally, the outer shell includes a cover plate 1 and a shell, and the pole 2 is inserted into the through hole of the cover plate 1, or the pole 2 is inserted into the through hole of the shell. In this embodiment, the pole 2 is inserted into the through hole of the cover plate 1. Optionally, a first high-temperature resistant insulating layer 3 can be provided on the positive pole 2, or a first high-temperature resistant insulating layer 3 can be provided on the negative pole 2, or a first high-temperature resistant insulating layer 3 can be provided on the positive pole 2 and a first high-temperature resistant insulating layer 3 can be provided on the negative pole 2. Optionally, a second high-temperature resistant insulating layer 4 can be provided on the cover plate 1 or shell near the positive pole 2, or a second high-temperature resistant insulating layer 4 can be provided on the cover plate 1 or shell near the negative pole 2, or a second high-temperature resistant insulating layer 4 can be provided on the cover plate 1 or shell near the positive pole 2 and a second high-temperature resistant insulating layer 4 can be provided on the cover plate 1 or shell near the negative pole 2. The pole 2 provided with the first high temperature resistant insulation layer 3 and the cover plate 1 or the shell provided with the second high temperature resistant insulation layer 4 may be at the connection position of the same pole, or at the connection position of different poles.

[0066] This embodiment also provides a battery comprising a battery cell and the aforementioned battery flange riveting secondary short circuit prevention structure, 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.

[0067] 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 battery flange riveting secondary short circuit prevention structure is characterized by: include: A shell, wherein a through hole is formed on the shell, and a riveted tube-shaped structure (11) is provided on the shell, wherein the riveted tube-shaped structure (11) is coaxially arranged with the through hole and surrounds the through hole; A pole (2), wherein the pole (2) has an annular protrusion (21), the annular protrusion (21) is arranged to protrude radially of the pole (2), one end of the pole (2) along its own axial direction is inserted into the through hole, a first end face (211) of the annular protrusion (21) abuts against a first face (12) of the housing located around the through hole and perpendicular to the axial direction of the pole (2), and the riveted tube-shaped structure (11) is riveted and bent to cover the side face and the second end face (212) of the annular protrusion (21); A first high-temperature resistant insulating layer (3) is provided on the side wall of the pole (2), and / or a second high-temperature resistant insulating layer (4) is provided on the surface of the housing facing the pole (2); An insulating sealing component is at least partially sleeved on the side wall of the pole (2), and at least partially sandwiched between the pole (2) and the housing.

2. The battery flange riveting secondary short circuit prevention structure according to claim 1, characterized in that: The first high-temperature resistant insulation layer (3) comprises a first-region high-temperature resistant insulation layer (31), and the first-region high-temperature resistant insulation layer (31) is located on the first end surface (211); And / or, the first high-temperature resistant insulating layer (3) includes a second-area high-temperature resistant insulating layer (32), and the second-area high-temperature resistant insulating layer (32) is located on a side of the annular protrusion (21); And / or, the first high-temperature resistant insulation layer (3) includes a third-region high-temperature resistant insulation layer (33), and the third-region high-temperature resistant insulation layer (33) is located on the second end surface (212).

3. The battery flange riveting secondary short circuit prevention structure according to claim 1, characterized in that: The pole (2) includes a first portion, the first portion is located at one end of the annular protrusion (21) along the axial direction of the pole (2), the end surface of the first portion is used for current conduction, the first high-temperature resistant insulation layer (3) includes a fourth-area high-temperature resistant insulation layer (34), and the fourth-area high-temperature resistant insulation layer (34) is located on the side wall of the first portion; And / or, the pole (2) includes a second portion, the second portion is located at the other end of the annular protrusion (21) along the axial direction of the pole (2), the end surface of the second portion is used for current conduction, and the first high-temperature resistant insulation layer (3) includes a fifth-zone high-temperature resistant insulation layer (35), and the fifth-zone high-temperature resistant insulation layer (35) is located on the side wall of the second portion.

4. The battery flange riveting secondary short circuit prevention structure according to any one of claims 1 to 3, characterized in that: The second high-temperature resistant insulation layer (4) comprises a sixth-area high-temperature resistant insulation layer (41), and the sixth-area high-temperature resistant insulation layer (41) is located on the inner wall of the riveted tube-shaped structure (11); And / or, the second high-temperature resistant insulation layer (4) includes a seventh-area high-temperature resistant insulation layer (42), and the seventh-area high-temperature resistant insulation layer (42) is located on the first surface (12); And / or, the second high-temperature resistant insulating layer (4) includes an eighth-region high-temperature resistant insulating layer (43), and the eighth-region high-temperature resistant insulating layer (43) is located on the inner wall of the through hole; And / or, the second high-temperature resistant insulation layer (4) includes a ninth zone high-temperature resistant insulation layer (44), the ninth zone high-temperature resistant insulation layer (44) is located on a second surface (13) of the housing located around the through hole and perpendicular to the axial direction of the pole (2), and the second surface (13) is opposite to the first surface (12).

5. The battery flange riveting secondary short circuit prevention structure according to any one of claims 1 to 3, characterized in that: The thickness of the first high-temperature resistant insulating layer (3) is greater than 0.01 mm, and / or the thickness of the second high-temperature resistant insulating layer (4) is greater than 0.01 mm.

6. The battery flange riveting secondary short circuit prevention structure according to any one of claims 1 to 3, characterized in that: The first high-temperature resistant insulating layer (3) is an aluminum oxide layer formed by electroplating, and / or the second high-temperature resistant insulating layer (4) is an aluminum oxide layer formed by electroplating.

7. The battery flange riveting secondary short circuit prevention structure according to any one of claims 1 to 3, characterized in that: The insulating sealing assembly comprises a first insulating member, the first insulating member is sleeved on the pole (2), and the first insulating member is at least partially sandwiched between the pole (2) and the riveted tube-shaped structure (11).

8. The battery flange riveting secondary short circuit prevention structure according to any one of claims 1 to 3, characterized in that: The insulating sealing assembly further comprises a sealing ring (6), wherein the sealing ring (6) is sleeved on the pole (2), and a portion of the sealing ring (6) is sandwiched between the pole (2) and the inner wall of the through hole.

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

10. A battery, characterized in that The invention comprises a battery core and a battery flange riveting secondary short circuit prevention structure according to any one of claims 1 to 9, wherein the battery core is located in the housing.

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