Pole, pole assembly and battery cover plate assembly
Patent Information
- Application Number
- CN202522446778.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-18
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-18
AI Technical Summary
[0002]目前，锂离子电池一般包括壳体、极芯以及盖板组件等，极芯安装在壳体内，盖板组件安装在壳体的开口端，极芯的极耳与盖板组件上的极柱焊接在一起，焊接所产生的热量往往传导至盖板组件的下塑胶上，从而导致下塑胶发生高温热熔，从而影响下塑胶对极芯和金属的盖板之间的绝缘防护作用
本申请提供了一种新型的极柱结构，将极柱设计成本体、密封部以及支撑部的结构，本体主要用于安装在电池盖板组件也即盖板和第一绝缘件上的极柱安装通孔内，密封部则起到封盖住第一绝缘件上的极柱安装通孔的开口的内侧，支撑部则起到支撑耐高温片的作用，使得耐高温片阻隔在支撑部和第一绝缘件的内侧之间，从而当极柱的密封部和/或支撑部与极芯的极耳焊接时，焊接热量不会传导至第一绝缘件例如下塑胶上，从而避免了下塑胶产生热熔，保证下塑胶的绝缘效果，保证结构的稳定性以及可靠性。
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Figure CN224874440U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a terminal post, a terminal post assembly, and a battery cover assembly. Background Technology
[0002] Currently, lithium-ion batteries generally include a casing, electrode core, and cover plate assembly. The electrode core is installed inside the casing, and the cover plate assembly is installed at the open end of the casing. The tabs of the electrode core are welded together with the terminals on the cover plate assembly. The heat generated by welding is often conducted to the lower plastic of the cover plate assembly, which causes the lower plastic to melt at high temperature, thus affecting the insulation and protection effect of the lower plastic between the electrode core and the metal cover plate. Utility Model Content
[0003] The purpose of this application is to provide a terminal post, a terminal post assembly, and a battery cover assembly, which to some extent solves the technical problem in the prior art where the electrode tab of the electrode core is welded to the terminal post on the cover assembly, and the heat generated by welding is often conducted to the lower plastic of the cover assembly, causing the lower plastic to melt at high temperature, thereby affecting the insulation and protection effect of the lower plastic on the electrode core and the metal cover.
[0004] This application provides a terminal post, including: a body, a sealing part, and a support part; wherein, the body is used to be installed in a terminal post mounting through hole of a battery cover assembly along a first preset direction; the sealing part and the support part are used to be installed on the inner side of a first insulating member of the battery cover assembly along the first preset direction near the electrode core, the sealing part is used to cover the inner opening of the terminal post mounting through hole, the support part is disposed on the side of the sealing part, and the support part is used to install a high-temperature resistant sheet located between the inner side of the first insulating member and the support part.
[0005] In the above technical solution, further, along the width direction of the first insulating member, at least one side of the sealing portion is provided with the support portion.
[0006] In any of the above technical solutions, further, along the width direction of the first insulating member, the support portion is provided on both opposite sides of the sealing portion.
[0007] In any of the above technical solutions, further, along the first preset direction, a height difference is formed between the side surface of the support portion near the first insulating member and the side surface of the sealing portion near the first insulating member, and the side surface of the support portion near the first insulating member is disposed away from the first insulating member relative to the side surface of the sealing portion near the first insulating member.
[0008] In any of the above technical solutions, the body is further described as cylindrical.
[0009] In any of the above technical solutions, the sealing part and the supporting part further form a flat plate structure.
[0010] In any of the above technical solutions, the body, the sealing part, and the support part are further integrated into a single structure.
[0011] This application also provides a terminal assembly, including a high-temperature resistant sheet and the terminal as described in any of the above technical solutions, wherein the high-temperature resistant sheet is mounted on the support portion and is respectively disposed against the inner side of the battery cover assembly and the support portion along the first preset direction. Therefore, it possesses all the beneficial technical effects of this terminal assembly, which will not be elaborated further here.
[0012] In the above technical solution, the high-temperature resistant sheet is further bonded to the side of the support near the cover plate.
[0013] This application also provides a battery cover assembly, including a cover plate, a first insulating member, and the terminal post described in any of the above technical solutions. The first insulating member is installed on the inner side of the cover plate near the electrode core. Both the cover plate and the first insulating member have terminal post mounting through holes extending along both sides of them in a first preset direction. The body is installed within the terminal post mounting through holes on the cover plate and the first insulating member. A sealing portion and a supporting portion are installed on the inner side of the first insulating member along the first preset direction near the electrode core. The sealing portion covers the inner opening of the terminal post mounting through hole, and the supporting portion is disposed on the outer side of the sealing portion. A high-temperature resistant sheet is disposed between the supporting portion and the inner side of the first insulating member. Therefore, it possesses all the beneficial technical effects of this terminal post, which will not be elaborated further here.
[0014] In the above technical solution, the pole assembly further includes a second insulating member and a clamping member; wherein the second insulating member and the clamping member are both installed on the outer side of the cover plate away from the pole core, and the second insulating member is disposed close to the cover plate, and a portion of the structure of the second insulating member extends into the pole mounting through hole and is blocked between the side wall of the pole mounting through hole and the side wall of the pole body; The second insulating member and the clamping member are both sleeved on the body of the pole post and exposed on the outer periphery of the pole post mounting through hole. The clamping member is connected to the pole post and is used to clamp the second insulating member.
[0015] In any of the above technical solutions, a support platform is further formed on the outer periphery of the body, and the clamping member is sleeved on the outer periphery of the body and abuts against the support platform along the first preset direction.
[0016] In any of the above technical solutions, one of the clamping member and the second insulating member is provided with a first anti-rotation groove, and the other is provided with a first anti-rotation part, wherein the first anti-rotation part is disposed in the first anti-rotation groove.
[0017] In any of the above technical solutions, one of the cover plate and the second insulating member is provided with a second anti-rotation groove, and the other is provided with a second anti-rotation part, and the second anti-rotation part is disposed in the second anti-rotation groove.
[0018] In any of the above technical solutions, a mounting groove is further formed on the side of the cover plate away from the electrode core, and the mounting groove surrounds and communicates with the outer periphery of the electrode mounting through hole, and the second insulating member is installed in the mounting groove.
[0019] In any of the above technical solutions, the battery cover assembly further includes a sealing ring, which is sleeved on the outside of the body of the electrode post, and a part of the sealing ring is disposed in the electrode post mounting through hole, while another part of the sealing ring is disposed on the outside of the electrode post mounting through hole and is pressed between the inner side of the first insulating member and the sealing part.
[0020] In any of the above technical solutions, the second insulating member is further defined as a groove structure with an opening in the bottom wall along the first preset direction.
[0021] Compared with the prior art, the beneficial effects of this application are as follows: This application provides a novel electrode post structure, which designs the electrode post into a body, a sealing part, and a support part. The body is mainly used to install the electrode post in the through hole on the battery cover assembly, i.e., the cover and the first insulating component. The sealing part covers the inside of the opening of the electrode post mounting through hole on the first insulating component. The support part supports the high-temperature resistant sheet, so that the high-temperature resistant sheet is isolated between the support part and the inside of the first insulating component. Therefore, when the sealing part and / or the support part of the electrode post are welded to the electrode tab of the electrode core, the welding heat will not be conducted to the first insulating component, such as the lower plastic, thereby avoiding the lower plastic from melting, ensuring the insulation effect of the lower plastic, and ensuring the stability and reliability of the structure.
[0022] In addition, this application provides an anti-rotation structure between the clamping member and the second insulating member, which can effectively prevent the two from rotating, making the structure more stable and reliable. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the pole structure provided in an embodiment of this application; Figure 2 This is another structural schematic diagram of the pole provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the battery cover assembly provided in an embodiment of this application; Figure 4 for Figure 3 A sectional view along section AA; Figure 5 An exploded view of the battery cover assembly provided in an embodiment of this application; Figure 6 This is another structural schematic diagram of the battery cover assembly provided in an embodiment of this application; Figure 7 Another structural schematic diagram of the battery cover assembly provided in the embodiments of this application; Figure 8 This is a schematic diagram of the structure of the second insulating element provided in an embodiment of this application; Figure 9 This is a schematic diagram of the structure of the clamping member provided in the embodiments of this application; Figure 10 This is a schematic diagram of the structure of the cover plate provided in an embodiment of this application; Figure 11 for Figure 10 A partially enlarged structural diagram; Figure 12 This is another structural schematic diagram of the second insulating member provided in an embodiment of this application.
[0025] Figure label: 1-Cover plate, 11-Pole mounting through hole, 12-Mounting groove, 13-Second anti-rotation part, 2-First insulating component, 3-Pole post, 31-Body, 32-Sealing part, 33-Supporting part, 34-Supporting platform, 4-High temperature resistant sheet, 5-Second insulating component, 51-First anti-rotation part, 52-Second anti-rotation groove, 6-Pressurizing component, 61-First anti-rotation groove, 7-Sealing ring, a-First preset direction. Detailed Implementation
[0026] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.
[0027] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.
[0028] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0029] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0031] The following reference Figures 1 to 12 The present application describes the terminal post, terminal post assembly, and battery cover assembly according to some embodiments thereof.
[0032] Example 1 See Figures 1 to 4As shown, an embodiment of this application provides an electrode post 3, including: a body 31, a sealing part 32, and a support part 33; wherein, the body 31 is used to be installed in the electrode post mounting through hole 11 provided along a first preset direction a in the battery cover assembly, and preferably, both the cover plate 1 and the first insulating member 2 of the battery cover assembly are formed with electrode post mounting through holes 11, and the body 31 is used to be installed in the electrode post mounting through holes 11 on the cover plate 1 and the first insulating member 2; the sealing part 32 and the support part 33 are used to be installed on the inner side of the first insulating member 2 of the battery cover assembly along the first preset direction a near the electrode core, the sealing part 32 is used to cover the inner opening of the electrode post mounting through hole 11, the support part 33 is disposed on the side of the sealing part 32, and the support part 33 is used to install the high temperature resistant sheet 4 located between the inner side of the first insulating member 2 and the support part 33.
[0033] As can be seen from the structure described above, this application provides a novel pole structure, in which the pole 3 is designed as a body 31, a sealing part 32, and a support part 33. The body 31 is mainly used to install in the pole mounting through hole 11 on the battery cover assembly, i.e., the cover plate 1 and the first insulating member 2. The sealing part 32 covers the inner side of the opening of the pole mounting through hole 11 on the first insulating member 2. The support part 33 supports the high-temperature resistant sheet 4, so that the high-temperature resistant sheet 4 is isolated between the support part 33 and the inner side of the first insulating member 2. Therefore, when the sealing part 32 and / or the support part 33 of the pole 3 are welded to the electrode tab of the pole core, the welding heat will not be conducted to the first insulating member 2, such as the lower plastic, thereby avoiding the lower plastic from melting, ensuring the insulation effect of the lower plastic, and ensuring the stability and reliability of the structure.
[0034] In this embodiment, preferably, as follows: Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, along the width direction of the first insulating member 2, support portions 33 are provided on both opposite sides of the sealing portion 32. It should be noted that high-temperature resistant sheets 4 can be installed on both sides of the support portions 33. As can be seen from the structure described above, by fully utilizing the width of the first insulating member 2 and arranging support portions 33 on both opposite sides of the sealing portion 32, the welding area between the pole post 3 and the pole core's tabs can be increased. Furthermore, high-temperature resistant sheets 4 can be installed on the support portions 33 on both sides to improve the heat insulation effect. Of course, this is not the only option; other structures can also be used. For example, along the width of the first insulating member 2, support portions 33 can be provided on only one side of the sealing portion 32, depending on the actual needs.
[0035] In addition, it should be noted that a support portion 33 may be provided on at least one side of the sealing portion 32 along the length direction of the first insulating member 2, or a support portion 33 may be provided on the entire outer periphery of the sealing portion 32 along a direction perpendicular to the first preset direction a. That is to say, the support portion 33 is a ring structure, and correspondingly, the high temperature resistant sheet 4 is a matching ring sheet, which may be selected according to actual needs.
[0036] Furthermore, preferably, the first preset direction 'a' is the thickness direction of the cover plate 1 and the first insulating member 2, which meets the usage requirements. Preferably, the length directions of the cover plate 1 and the first insulating member 2 are the same, and their width directions are also the same. Of course, this is not the only possible configuration.
[0037] In this embodiment, preferably, as follows: Figure 2 and Figure 4 As shown, along the first preset direction a, a height difference is formed between the side surface of the support portion 33 near the first insulating member 2 and the side surface of the sealing portion 32 near the first insulating member 2, and the side surface of the support portion 33 near the first insulating member 2 is disposed away from the first insulating member 2 relative to the side surface of the sealing portion 32 near the first insulating member 2.
[0038] As can be seen from the structure described above, the high-temperature resistant sheet 4 is installed in the space formed by the aforementioned height difference, and the high-temperature resistant sheet 4 can also be limited by the vertical portion between the side surface of the support portion 33 near the first insulating member 2 and the side surface of the sealing portion 32 near the first insulating member 2. Of course, it is not limited to this; it can also be made so that the side surface of the support portion 33 near the first insulating member 2 is flush with the side surface of the sealing portion 32 near the first insulating member 2 along the first preset direction a, etc., depending on the actual needs.
[0039] In this embodiment, preferably, as follows: Figures 1 to 3 As shown, the main body 31 is cylindrical. As can be seen from the structure described above, the body 31 of the pole post 3 adopts a cylindrical structure, which meets the usage requirements and facilitates manufacturing and assembly. Of course, it is not limited to this; the body 31 can also be a prismatic structure, etc.
[0040] In this embodiment, preferably, as follows: Figure 1 As shown, the sealing part 32 and the supporting part 33 are formed into a flat plate shape. The flat plate structure has a large area, which meets the sealing requirements of the opening of the pole mounting through hole 11, that is, it meets the sealing requirements, and it is also lightweight. Of course, it is not limited to this. In this embodiment, preferably, as follows: Figure 1As shown, the main body 31, the sealing part 32 and the support part 33 are an integral structure. That is to say, the pole post 3 adopts an integral structure, which has high overall strength, is not easy to be damaged, has a long service life, and avoids the risk of increasing resistance when the separate structures are connected by welding or connectors. Example 2 See Figure 4 As shown, Embodiment 2 of this application also provides a pole assembly, including the pole 3 described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of the pole 3. The same technical features and beneficial effects will not be repeated here.
[0041] In this embodiment, preferably, as follows: Figure 4 As shown, the pole assembly also includes a high-temperature resistant sheet 4, which is mounted on the support portion 33 and is respectively attached to the inner side of the first insulating member 2 and the support portion 33 along the first preset direction a. As can be seen from the structure described above, the high-temperature resistant sheet 4 is placed between the support part 33 of the pole post 3 and the inner side of the first insulating member 2, thereby preventing the welding heat during the welding of the pole post 3 and the electrode tab from being transferred to the first insulating member 2, such as the lower plastic, thus avoiding the lower plastic from melting, ensuring the insulation effect of the lower plastic, and ensuring the stability and reliability of the structure.
[0042] In this embodiment, preferably, as follows: Figure 4 As shown, the high-temperature resistant sheet 4 is bonded to the side of the support part 33 near the cover plate 1. As can be seen from the structure described above, the high-temperature resistant sheet 4 is bonded to the support part 33, which not only provides a stable and reliable structure but also simplifies and facilitates the bonding process, saving time and effort and improving production efficiency. It should be noted that the high-temperature resistant sheet 4 is not limited to being bonded to the support part 33. It can also be bonded without any connection, relying solely on the support part 33 and the first insulating member 2 to clamp the high-temperature resistant sheet 4. Alternatively, other connection methods can be selected, such as snap-fit and slot connections. Or, a groove can be cut into the support part 33 to install the high-temperature resistant sheet 4 within the groove of the support part 33.
[0043] Example 3 See Figures 3 to 12 As shown, Embodiment 2 of this application also provides a battery cover assembly, including the terminal assembly described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of the terminal assembly, and the same technical features and beneficial effects will not be repeated.
[0044] In this embodiment, preferably, as follows: Figures 3 to 7As shown, the battery cover assembly also includes a cover plate 1 and a first insulating member 2; wherein, the first insulating member 2 is installed on the inner side of the cover plate 1 near the electrode core; both the cover plate 1 and the first insulating member 2 are formed with electrode mounting through holes 11 extending through both sides along a first preset direction a, and the body 31 is installed in the electrode mounting through holes 11 on the cover plate 1 and the first insulating member 2. The sealing part 32 and the support part 33 are installed on the inner side of the first insulating member 2 along the first preset direction a near the pole core. The sealing part 32 covers the inner opening of the pole mounting through hole 11. The support part 33 is disposed on the outer side of the sealing part 32, and a high temperature resistant sheet 4 is disposed between the support part 33 and the inner side of the first insulating member 2.
[0045] As can be seen from the structure described above, the electrode post 3 provided in this application includes a body 31, a sealing part 32, and a support part 33. The body 31 is mainly used to install the electrode post mounting through hole 11 on the battery cover assembly, i.e., the cover plate 1 and the first insulating member 2. The sealing part 32 covers the inner side of the opening of the electrode post mounting through hole 11 on the first insulating member 2. The support part 33 supports the high-temperature resistant sheet 4, so that the high-temperature resistant sheet 4 is isolated between the support part 33 and the inner side of the first insulating member 2. Therefore, when the sealing part 32 and / or the support part 33 of the electrode post 3 are welded to the electrode tab of the electrode core, the welding heat will not be conducted to the first insulating member 2, such as the lower plastic, thereby avoiding the lower plastic from melting, ensuring the insulation effect of the lower plastic, and ensuring the stability and reliability of the structure.
[0046] In this embodiment, preferably, as follows: Figure 4 and Figure 5 As shown, the pole assembly also includes a second insulating member 5 and a clamping member 6; wherein the second insulating member 5 and the clamping member 6 are both installed on the outer side of the cover plate 1 away from the pole core, and the second insulating member 5 is disposed close to the cover plate 1, and a portion of the structure of the second insulating member 5 extends into the pole mounting through hole 11, and is blocked between the side wall of the pole mounting through hole 11 and the side wall of the body 31 of the pole 3. The second insulating member 5 and the clamping member 6 are both sleeved on the outer periphery of the body 31 of the pole post 3, which is exposed on the pole post mounting through hole 11. The clamping member 6 is connected to the pole post 3 and is used to clamp the second insulating member 5. As can be seen from the structure described above, the second insulating component 5 mainly serves as the upper plastic layer. The second insulating component 5 isolates the pressing component 6 and the pole post 3 from the cover plate 1, thus playing a role in insulation and protection. The pressing component 6, such as the pressure block, is mainly used to press the second insulating component 5, making the second insulating component 5 more secure and stable.
[0047] Furthermore, preferably, the second insulating component 5 can also be pre-molded into a structural component by injection molding and assembled with the cover plate 1, the pole post 3 and the clamping component 6, or the second insulating component 5 can be directly injection molded onto the cover plate 1 and the pole post 3, etc.
[0048] Further, preferably, such as Figure 6 , Figure 8 and Figure 11 As shown, a mounting groove 12 is formed on the side of the cover plate 1 opposite to the electrode core. The mounting groove 12 surrounds and communicates with the outer periphery of the electrode mounting through hole 11, and the second insulating member 5 is installed in the mounting groove 12. It can be seen that the second insulating member 5, situated within the mounting groove 12 of the cover plate 1, serves to limit its position, preventing rotation or displacement. Alternatively, this mounting groove 12 can be omitted, and the second insulating member 5 can be placed directly on the outside of the cover plate 1.
[0049] Further, preferably, such as Figure 8 As shown, the second insulating member 5 is a groove structure with an opening in the bottom wall along the first preset direction a, which can cover the bottom wall and side wall of the pressing member 6 and improve the insulation protection effect.
[0050] In this embodiment, preferably, as follows: Figure 1 and Figure 4 As shown, a support platform 34 is formed on the outer periphery of the body 31, and the clamping member 6 is sleeved on the outer periphery of the body 31 and abuts against the support platform 34 along the first preset direction a. The support platform 34 plays the role of limiting the clamping member 6. In this embodiment, preferably, as follows: Figure 8 and Figure 9 As shown, one of the clamping member 6 and the second insulating member 5 is provided with a first anti-rotation groove 61, and the other is provided with a first anti-rotation part 51, and the first anti-rotation part 51 is provided in the first anti-rotation groove 61. That is to say, the first anti-rotation groove 61 can be provided on the clamping member 6 and the first anti-rotation part 51 can be provided on the second insulating member 5, or the first anti-rotation groove 61 can be provided on the second insulating member 5 and the first anti-rotation part 51 can be provided on the clamping member 6, depending on the actual needs. As can be seen from the structure described above, the first anti-rotation part 51 is provided in the first anti-rotation groove 61, thereby preventing the pressing member 6 from rotating relative to the first insulating member 2.
[0051] In this embodiment, preferably, as follows: Figures 10 to 12As shown, one of the cover plate 1 and the second insulating member 5 is provided with a second anti-rotation groove 52, and the other is provided with a second anti-rotation part 13, and the second anti-rotation part 13 is provided in the second anti-rotation groove 52. That is to say, the second anti-rotation groove 52 can be provided on the second insulating member 5, and the second anti-rotation part 13 can be provided on the bottom wall of the mounting groove 12 of the cover plate 1, or the second anti-rotation groove 52 can be provided on the bottom wall of the mounting groove 12 of the cover plate 1, and the second anti-rotation part 13 can be provided on the second insulating member 5, depending on the actual needs.
[0052] As can be seen from the structure described above, the second anti-rotation part 13 is disposed in the second anti-rotation groove 52, thereby preventing the second insulating member 5 from rotating relative to the cover plate 1.
[0053] In this embodiment, preferably, as follows: Figure 4 As shown, the battery cover assembly also includes a sealing ring 7. The sealing ring 7 is sleeved on the outside of the body 31 of the terminal post 3, and a part of the structure of the sealing ring 7 is disposed in the terminal post mounting through hole 11, while another part of the structure of the sealing ring 7 is disposed on the outside of the terminal post mounting through hole 11 and is pressed between the inner side of the first insulating member 2 and the sealing part 32.
[0054] As can be seen from the structure described above, the sealing ring 7 serves to seal and prevent electrolyte leakage.
[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. An electrode post, characterized in that, include: The battery cover assembly comprises a body, a sealing portion, and a support portion; wherein the body is used to be installed in the electrode mounting through hole of the battery cover assembly along a first preset direction; the sealing portion and the support portion are used to be installed on the inner side of the first insulating member of the battery cover assembly near the electrode core along the first preset direction, the sealing portion is used to cover the inner opening of the electrode mounting through hole, the support portion is disposed on the side of the sealing portion, and the support portion is used to install a high-temperature resistant sheet located between the inner side of the first insulating member and the support portion.
2. The pole post according to claim 1, characterized in that, Along the width direction of the first insulating member, at least one side of the sealing portion is provided with the support portion.
3. The pole post according to claim 2, characterized in that, Along the width direction of the first insulating member, the support portion is provided on both opposite sides of the sealing portion.
4. The pole post according to any one of claims 1 to 3, characterized in that, Along the first preset direction, a height difference is formed between the side surface of the support portion near the first insulating member and the side surface of the sealing portion near the first insulating member, and the side surface of the support portion near the first insulating member is disposed away from the first insulating member relative to the side surface of the sealing portion near the first insulating member; and / or The body is cylindrical; and / or The sealing portion and the supporting portion form a flat plate structure; and / or The main body, the sealing part, and the supporting part are an integral structure.
5. A pole assembly, characterized in that, It includes a high-temperature resistant sheet and an electrode post as described in any one of claims 1 to 3; wherein the high-temperature resistant sheet is mounted on the support portion and is respectively disposed against the inner side of the first insulating member of the battery cover assembly and the support portion along the first preset direction.
6. The electrode assembly according to claim 5, characterized in that, The high-temperature resistant sheet is bonded to the side of the support near the cover plate.
7. A battery cover assembly, characterized in that, The device includes a cover plate, a first insulating member, and an electrode assembly as described in claim 5 or 6; wherein the first insulating member is installed on the inner side of the cover plate near the electrode core; both the cover plate and the first insulating member are formed with electrode mounting through holes extending through both sides along the first preset direction, and the body is installed in the electrode mounting through holes on the cover plate and the first insulating member. The sealing part and the supporting part are installed on the inner side of the first insulating member along the first preset direction near the pole core. The sealing part covers the inner opening of the pole mounting through hole. The supporting part is disposed on the outer side of the sealing part, and the high temperature resistant sheet is disposed between the supporting part and the inner side of the first insulating member.
8. The battery cover assembly according to claim 7, characterized in that, The pole assembly further includes a second insulating member and a clamping member; wherein the second insulating member and the clamping member are both installed on the outer side of the cover plate away from the pole core, and the second insulating member is disposed close to the cover plate, and a portion of the structure of the second insulating member extends into the pole mounting through hole and is blocked between the side wall of the pole mounting through hole and the side wall of the pole body. The second insulating member and the clamping member are both sleeved on the body of the pole post and exposed on the outer periphery of the pole post mounting through hole. The clamping member is connected to the pole post and is used to clamp the second insulating member.
9. The battery cover assembly according to claim 8, characterized in that, A support platform is formed on the outer periphery of the body, and the clamping member is sleeved on the outer periphery of the body and abuts against the support platform along the first preset direction.
10. The battery cover assembly according to claim 8, characterized in that, One of the clamping member and the second insulating member is provided with a first anti-rotation groove, and the other is provided with a first anti-rotation part, wherein the first anti-rotation part is disposed within the first anti-rotation groove; and / or One of the cover plate and the second insulating member is provided with a second anti-rotation groove, and the other is provided with a second anti-rotation part, wherein the second anti-rotation part is disposed within the second anti-rotation groove; and / or A mounting groove is formed on the side of the cover plate opposite to the electrode core, and the mounting groove surrounds and communicates with the outer periphery of the electrode mounting through hole, and the second insulating member is installed in the mounting groove; and / or The battery cover assembly further includes a sealing ring, which is sleeved on the outside of the body of the terminal post. A portion of the sealing ring is disposed within the terminal post mounting through hole, and another portion is disposed outside the terminal post mounting through hole, and is pressed between the inner side of the first insulating member and the sealing portion; and / or The second insulating element is a groove structure with an opening in the bottom wall along the first preset direction.