Battery cover plate assembly
Patent Information
- Application Number
- CN202521350450.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-06-27
AI Technical Summary
[0003]本申请的目的在于提供一种电池盖板组件，在一定程度上解决了现有技术中存在的当电池生产过程中注液时，常常会出现电解液溢出至极柱处，导致极柱外的塑胶件污染或腐蚀的技术问题
[0024]本申请提供的电池盖板组件，本申请提供的电池盖板组件增设了阻挡构件，阻挡构件设置在注液孔和第一绝缘件之间，并且围绕第一绝缘件的外周设置，并且阻挡构件上开设有第一容纳槽，并且在第一容纳槽的底壁还开设有第二容纳槽，可容纳注液时溢流出的电解液，起到阻挡溢流出的电解液的作用，进而可避免溢流出的电解液腐蚀阻挡构件的另一侧的第一绝缘件，保证其结构的可靠性。
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Figure CN224720942U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a battery cover assembly. Background Technology
[0002] Currently, various problems can occur during battery production, especially in the electrolyte injection process. Because the common design of the electrolyte injection hole is close to the terminal, electrolyte often overflows to the terminal during injection, causing contamination or corrosion of the plastic parts outside the terminal. Utility Model Content
[0003] The purpose of this application is to provide a battery cover assembly that, to a certain extent, solves the technical problem in the prior art where, during the battery production process, electrolyte often overflows to the terminals, causing contamination or corrosion of the plastic parts outside the terminals.
[0004] This application provides a battery cover assembly, including: a cover plate, a terminal post, a first insulating member, and a blocking member; wherein, the terminal post is mounted on the cover plate, and the first insulating member surrounds the structure of the terminal post exposed on the outside of the cover plate;
[0005] The cover plate has an injection hole, and the blocking member is disposed on the outside of the cover plate, between the injection hole and the first insulating member, and is disposed around the outer periphery of the first insulating member; a first receiving groove is formed on the side of the blocking member near the cover plate, and the first receiving groove is used to receive the electrolyte overflowing from the injection hole.
[0006] In the above technical solution, further, along the thickness direction of the cover plate, the bottom wall of the first receiving groove forms a plurality of second receiving grooves, and the plurality of second receiving grooves are arranged sequentially at intervals along the circumference of the first receiving groove.
[0007] In any of the above technical solutions, the battery cover assembly further includes a support ring, the cover is formed with mounting through holes arranged along its thickness direction, and the support rings are all installed in the mounting through holes;
[0008] The pole is installed inside the support ring, and the first insulating member is wrapped around the support ring and exposed on the outer structure of the cover plate, separating the pole from the support ring; the first receiving groove of the blocking member is provided outside the edge of the outer opening of the mounting through hole.
[0009] In any of the above technical solutions, the edge of the outer opening of the mounting through hole is further provided relative to the second receiving groove on the side closer to the first insulating member.
[0010] In any of the above technical solutions, the blocking member further includes a first blocking wall, a connecting wall, and a second blocking wall connected in sequence, and is arranged to form the first receiving groove; wherein the first blocking wall and the second blocking wall are both arranged along the thickness direction of the cover plate, and the second blocking wall is arranged close to the cover plate relative to the first blocking wall; the first blocking wall is inserted into the first groove of the cover plate, and the second blocking wall is inserted into the second groove of the support ring; the second receiving groove is formed in the connecting wall.
[0011] In any of the above technical solutions, the wall thickness of the first barrier wall is X1, the wall thickness of the second barrier wall is X2, and X1 = 2X2, wherein 0.5mm < X2 < 0.8mm.
[0012] In any of the above technical solutions, the second receiving groove is further provided near the side wall of the blocking member that is away from the pole post.
[0013] In any of the above technical solutions, there is further an assembly gap between the blocking member and the support ring.
[0014] In any of the above technical solutions, the blocking member is further connected to the cover plate and / or the support ring.
[0015] In any of the above technical solutions, the support ring and the cover plate are further connected by welding.
[0016] In any of the above technical solutions, the support ring is further provided with a reinforcing through hole, the first insulating member is provided with a reinforcing protrusion, and the reinforcing protrusion is disposed in the reinforcing through hole.
[0017] In any of the above technical solutions, the battery cover assembly further includes a sealing ring, which is sleeved on the outside of the electrode post and compressed between the electrode post, the first insulating member, and the support ring.
[0018] In any of the above technical solutions, a preset gap is further formed between the blocking member and the first insulating member.
[0019] In any of the above technical solutions, the material of the blocking component is a corrosion-resistant polymer plastic.
[0020] In any of the above technical solutions, further, along the thickness direction of the cover plate, the height difference between the outer surface of the blocking member away from the cover plate and the outer surface of the cover plate is S, and 0.5mm < s < 0.8mm.
[0021] In any of the above technical solutions, the blocking member is further described as an annular structure, and the first receiving groove is an annular groove.
[0022] In any of the above technical solutions, there is further an assembly gap between the blocking member and the cover plate.
[0023] Compared with the prior art, the beneficial effects of this application are as follows:
[0024] The battery cover assembly provided in this application includes a blocking member disposed between the injection hole and the first insulating member, and surrounding the outer periphery of the first insulating member. The blocking member has a first receiving groove, and a second receiving groove is also provided on the bottom wall of the first receiving groove, which can accommodate the electrolyte overflowing during injection, thereby preventing the overflowing electrolyte from corroding the first insulating member on the other side of the blocking member and ensuring the reliability of its structure.
[0025] Furthermore, by setting up blocking components and rationally arranging the positional relationship between the blocking components and the injection hole and the assembly gap on the electrode side, when electrolyte appears around the first insulating component outside the electrode, it is possible to determine whether it is electrolyte overflowing during injection or electrolyte leaking from the electrode side. Attached Figure Description
[0026] 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.
[0027] Figure 1 An exploded view of the battery cover assembly provided in an embodiment of this application;
[0028] Figure 2 This is an assembly diagram of the battery cover assembly provided in an embodiment of this application;
[0029] Figure 3 A cross-sectional view of the assembly diagram of the battery cover assembly provided in an embodiment of this application;
[0030] Figure 4 for Figure 3 A magnified structural diagram at point A;
[0031] Figure 5 A cross-sectional view of the cover plate provided in an embodiment of this application;
[0032] Figure 6 for Figure 5A magnified structural diagram at point B;
[0033] Figure 7 This is a schematic diagram of the support ring provided in an embodiment of this application;
[0034] Figure 8 This is a schematic diagram of the structure of the blocking member provided in the embodiments of this application;
[0035] Figure 9 This is another structural schematic diagram of the blocking member provided in an embodiment of this application;
[0036] Figure 10 Another structural schematic diagram of the blocking member provided in the embodiments of this application;
[0037] Figure 11 for Figure 10 A partially enlarged structural diagram.
[0038] Figure label:
[0039] 1-Cover plate, 11-Injection hole, 12-Mounting through hole, 13-First groove, 2-Pole post, 3-First insulating component, 4-Blocking component, 41-First blocking wall, 42-Connecting wall, 43-Second blocking wall, 44-First receiving groove, 45-Second receiving groove, 5-Support ring, 51-Second groove, 52-Reinforced through hole, 6-Sealing ring, 7-Second insulating component. Detailed Implementation
[0040] 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.
[0041] 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.
[0042] 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.
[0043] 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.
[0044] 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.
[0045] The following reference Figures 1 to 11 This application describes a battery cover assembly according to some embodiments.
[0046] See Figures 1 to 4 As shown, an embodiment of this application provides a battery cover assembly, including: a cover plate 1, a terminal post 2, a first insulating member 3, and a blocking member 4; wherein, the terminal post 2 is mounted on the cover plate 1, and the first insulating member 3 surrounds the structure of the terminal post 2 exposed on the outside of the cover plate 1; the cover plate 1 has an injection hole 11, the blocking member 4 is disposed on the outside of the cover plate 1, and is located between the injection hole 11 and the first insulating member 3, and is disposed around the outer periphery of the first insulating member 3; a first receiving groove 44 is formed on the side of the blocking member 4 near the cover plate 1, and the first receiving groove 44 is used to receive the electrolyte overflowing from the injection hole 11.
[0047] As can be seen from the structure described above, the battery cover assembly provided in this application adds a blocking member 4. The blocking member 4 is disposed between the injection hole 11 and the first insulating member 3, and is disposed around the outer periphery of the first insulating member 3. The blocking member 4 is provided with a first receiving groove 44, which can accommodate the electrolyte overflowing during injection, thereby blocking the overflowing electrolyte and preventing the overflowing electrolyte from corroding the first insulating member 3 on the other side of the blocking member 4, thus ensuring the reliability of the structure.
[0048] It should be noted that there is an assembly gap between the blocking member 4 and the cover plate 1, which is a micro-leakage structure. The electrolyte overflowing through the injection hole 11 will enter the first receiving tank 44 through the gap between the blocking member 4 and the cover plate 1, thereby preventing it from flowing further toward the first insulating member 3. Of course, it is not limited to this. There may also be no gap between the blocking member 4 and the cover plate 1, which can completely block the overflowing electrolyte on the outside of the blocking member 4 near the injection hole 11, thus preventing leakage. The specific choice depends on the actual needs.
[0049] Furthermore, preferably, the blocking member 4 is an annular structure, and the first receiving groove 44 is an annular groove, so that it can correspond to the injection hole 11 on either side, thereby improving assembly efficiency. It should be noted that the structure of the blocking member 4 is not limited to this; the blocking member 4 can also be part of an annular structure, etc., depending on the actual needs.
[0050] In this embodiment, preferably, as follows: Figure 4 , Figure 8 , Figure 9 and Figure 11 As shown, along the thickness direction of the cover plate 1, the bottom wall of the first receiving groove 44 forms a plurality of second receiving grooves 45, and the plurality of second receiving grooves 45 are arranged sequentially at intervals along the circumference of the first receiving groove 44.
[0051] As can be seen from the structure described above, a second receiving tank 45 is provided on the bottom wall of the first receiving tank 44 to further hinder the electrolyte from continuing to flow to the first insulating component 3, thereby effectively preventing the electrolyte from overflowing to the first insulating component 3 and corroding it, which helps to improve the reliability of the structure.
[0052] Furthermore, preferably, the plurality of second receiving tanks 45 are arranged sequentially and evenly at intervals along the circumference of the first receiving tank 44. Regardless of the horizontal orientation of the first blocking member 4, it can prevent the electrolyte overflowing during injection from flowing toward the first insulating member 3. Of course, this is not the only option; the plurality of second receiving tanks 45 can be arranged arbitrarily, depending on the actual needs.
[0053] It should be noted that the second receiving slot 45 may not be provided, that is, only the first receiving slot 44 may be provided, depending on the actual needs.
[0054] In this embodiment, preferably, as follows: Figure 1 , Figure 3 and Figure 4As shown, the battery cover assembly also includes a support ring 5. The cover 1 has mounting through holes 12 arranged along its thickness direction, and the support rings 5 are all installed in the mounting through holes 12. The pole post 2 is installed in the support ring 5. The first insulating member 3 is wrapped around the support ring 5 and exposed on the outer structure of the cover 1, and separates the pole post 2 from the support ring 5. The first receiving groove 44 of the blocking member 4 is covered outside the edge of the outer opening of the mounting through hole 12.
[0055] As can be seen from the structure described above, the support ring 5 serves to support the first insulating element 3. Preferably, the support ring 5 serves as the basic skeleton, and the first insulating element 3 can be injection molded on the support ring 5. Moreover, the blocking member 4 blocks the outer edge of the outer opening of the mounting through hole 12, which helps to determine whether the leakage is at the joint between the support ring 5 and the cover plate 1, such as the weld seam (referred to as electrode side leakage), or the electrolyte overflowing during injection. This will be explained in detail later.
[0056] It should be noted that there is an assembly gap between the blocking member 4 and the support ring 5, which constitutes a micro-leakage structure. Leakage from the pole side will flow through this assembly gap to the inside of the blocking member 4, thus indicating leakage from the pole side. However, this is not the only possibility; there can also be no gap between the blocking member 4 and the support ring 5, which would completely block leakage from the pole side within the blocking member 4, thus preventing leakage. The choice depends on the specific needs.
[0057] In this embodiment, preferably, as follows: Figure 4 and Figure 11 As shown, the edge of the outer opening of the mounting through hole 12 is positioned relative to the second receiving groove 45 on the side closer to the first insulating member 3.
[0058] Based on the structure described above, the first path a on the left represents the path of leakage on the electrode side, and the second path b on the right represents the flow path of the electrolyte overflowing during injection. It can be seen that the edge of the outer opening of the mounting hole 12 is set closer to the first insulating member 3 relative to the second receiving groove 45. This ensures that the electrolyte overflowing during injection will pass through the second receiving groove 45, thereby preventing it from continuing to flow towards the first insulating member 3. In this case, once electrolyte appears between the blocking member 4 and the first insulating member 3, that is, when electrolyte appears on the left side of the blocking member 4, it can be basically determined that the leakage is on the electrode side, rather than electrolyte overflowing during injection. When electrolyte appears on the right side of the blocking member 4 near the injection hole 11, that is, on the right side, it can be basically determined that it is electrolyte overflowing during injection.
[0059] In addition, by removing the blocking component 4 and observing the flow path of the electrode liquid below it, it can be further determined whether the electrolyte overflowed during injection or leaked from the electrode side.
[0060] Further, preferably, such as Figure 4 , Figures 8 to 11 As shown, the second receiving tank 45 is located near the side wall of the blocking member 4 away from the electrode post 2, which further ensures that the electrolyte overflowing during injection will pass through the second receiving tank 45, thereby preventing it from continuing to flow towards the first insulating member 3. The electrolyte leaking from the electrode post side will not pass through the second receiving tank 45, but will flow directly to the preset gap between the blocking member 4 and the first insulating member 3 as described below, thus not affecting the judgment of leakage from the electrode post side.
[0061] In this embodiment, preferably, as follows: Figures 4 to 9 , Figure 11 As shown, the blocking member 4 includes a first blocking wall 41, a connecting wall 42, and a second blocking wall 43 connected in sequence, forming a first receiving groove 44; wherein, the first blocking wall 41 and the second blocking wall 43 are both arranged along the thickness direction of the cover plate 1, and the second blocking wall 43 is arranged close to the cover plate 1 relative to the first blocking wall 41; the first blocking wall 41 is inserted into the first groove 13 of the cover plate 1, and the second blocking wall 43 is inserted into the second groove 51 of the support ring 5; the second receiving groove 45 is formed in the connecting wall 42.
[0062] As can be seen from the structure described above, the first blocking wall 41 is inserted into the first groove 13 of the cover plate 1, and the second blocking wall 43 is inserted into the second groove 51 of the support ring 5, thereby playing the role of fixing and supporting the blocking member 4, making the blocking member 4 more stable and preventing displacement, etc. Moreover, the first blocking wall 41 increases the path of the electrolyte overflowing during liquid injection, thereby blocking the electrolyte and preventing it from reaching the first insulating member.
[0063] It should be noted that there is a certain space between the upper surface of the cover plate 1 that mates with the connecting wall 42 or the upper surface of the support ring 5 and the connecting wall 42, and they can be made to fit together. However, there is actually a gap in this fit, and it will not be completely sealed.
[0064] In this embodiment, preferably, as follows: Figure 11 As shown, the wall thickness of the first blocking wall 41 is X1, the wall thickness of the second blocking wall 43 is X2, and X1 = 2X2.
[0065] As can be seen from the structure described above, the thickness of the first blocking wall 41 is greater than the thickness of the second blocking wall 43, thereby increasing the flow path of the electrolyte overflowing from the injection hole 11, so that it flows to the first receiving tank 44 of the blocking member 4 at most, and avoids flowing out of the first receiving tank 44, that is, flowing to the first insulating member 3.
[0066] Furthermore, preferably, 0.5mm < X2 < 0.8mm. If the thickness of the second barrier wall 43 is too large, it will occupy a lot of space. If the thickness of the second barrier wall 43 is too small, its strength will be low and it will reduce the leakage path of the electrode 2, thus failing to effectively prevent leakage of the electrode 2. Based on this, the thickness of the first barrier wall 41 can be quickly calculated, providing guidance for production.
[0067] In this embodiment, preferably, as follows: Figure 4 As shown, a preset gap is formed between the blocking member 4 and the first insulating member 3 along a direction perpendicular to the thickness direction of the cover plate 1.
[0068] Based on the structure described above, a certain space is reserved between the blocking member 4 and the first insulating member 3. When electrolyte is present in this space, it can be basically determined that the leakage is from the electrode post 2.
[0069] It should be noted that this gap may not be reserved between the blocking member 4 and the first insulating member 3, depending on the actual needs.
[0070] In this embodiment, preferably, the blocking member 4 is connected to the cover plate 1 and the support ring 5 by ultrasonic heat fusion. The connected structure is firm and stable, and the operation is simple and convenient. Of course, the connection method between the blocking member 4 and the cover plate 1 and the support ring 5 is not limited to the above. It can also be connected by adhesive or other methods, depending on the actual needs.
[0071] In this embodiment, preferably, the material of the blocking member 4 is a corrosion-resistant polymer plastic material, which is corrosion-resistant, has a long service life, and is easy to mold. In addition, it is easier to remove and observe the corrosion path, and then make further judgments.
[0072] Furthermore, preferably, the material of the blocking component 4 can be a corrosion-resistant polymer plastic such as PP or PVC, which has corrosion resistance.
[0073] It should be noted that the material of the blocking component 4 is not limited to this and can be selected according to actual needs.
[0074] In this embodiment, preferably, the support ring 5 and the cover plate 1 are connected by welding. The structure after connection is firm and stable, and the operation is simple and convenient. Of course, the connection method between the support ring 5 and the cover plate 1 is not limited to the above, and other connection methods can also be used, depending on the actual needs.
[0075] In this embodiment, preferably, as follows: Figure 7 As shown, the support ring 5 has a reinforcing through hole 52, and the first insulating member 3 has a reinforcing protrusion (not shown in the figure), and the reinforcing protrusion is disposed in the reinforcing through hole 52.
[0076] As can be seen from the structure described above, the reinforcing protrusion and the reinforcing through hole 52 form an interlocking structure, that is, the part of the structure between the support ring 5 and the first insulating member 3 is interlocked, increasing the firmness and stability of the structure after the two are connected. Of course, it is not limited to this, and the aforementioned reinforcing protrusion and reinforcing through hole 52 may not be provided.
[0077] Furthermore, preferably, there are multiple reinforcing through holes 52, which are arranged sequentially and evenly at intervals along the entire circumference of the support ring 5. Correspondingly, there can also be multiple reinforcing protrusions, which correspond one-to-one with the multiple reinforcing through holes 52. Of course, this is not limited to this; the number of both reinforcing protrusions and reinforcing through holes 52 can be one, depending on the actual needs.
[0078] In this embodiment, preferably, as follows: Figure 1 and Figure 3 As shown, the battery cover assembly also includes a sealing ring 6, which is sleeved on the outside of the terminal post 2 and compressed between the terminal post 2, the first insulating member 3 and the support ring 5, thereby fixing and pressing the sealing ring 6.
[0079] As can be seen from the structure described above, the sealing ring 6 serves a sealing function to prevent problems such as electrolyte leakage.
[0080] In addition, it should be noted that the battery cover assembly provided in this application also includes a second insulating member 7, such as the following plastic, which is disposed on the inner side of the cover 1, that is, the side close to the electrode assembly. It is an existing component and will not be described in detail here.
[0081] In this embodiment, preferably, as follows: Figure 4 As shown, along the thickness direction of the cover plate 1, the height difference between the outer surface of the blocking member 4 away from the cover plate 1 and the outer surface of the cover plate 1 is S, and 0.5mm < S < 0.8mm.
[0082] As can be seen from the structure described above, the greater the height S of the blocking member 4 protruding from the cover plate 1, the more likely it is to affect the installation of other components. The smaller the height S of the blocking member 4 protruding from the cover plate 1, the shallower the depth of the first receiving groove 44 and the second receiving groove 45 will be, which will not be conducive to hindering the flow of electrolyte. Therefore, S is set to a value between 0.5mm and 0.8mm.
[0083] 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. A battery cover assembly, characterized in that, include: A cover plate, a pole, a first insulating element, and a blocking member; wherein the pole is mounted on the cover plate, and the first insulating element surrounds the structure of the pole exposed outside the cover plate; The cover plate has an injection hole, and the blocking member is disposed on the outside of the cover plate, between the injection hole and the first insulating member, and is disposed around the outer periphery of the first insulating member; a first receiving groove is formed on the side of the blocking member near the cover plate, and the first receiving groove is used to receive the electrolyte overflowing from the injection hole.
2. The battery cover assembly according to claim 1, characterized in that, Along the thickness direction of the cover plate, the bottom wall of the first receiving groove forms a plurality of second receiving grooves, and the plurality of second receiving grooves are arranged sequentially at intervals along the circumference of the first receiving groove.
3. The battery cover assembly according to claim 2, characterized in that, The battery cover assembly also includes support rings, and the cover has mounting through holes arranged along its thickness direction, and the support rings are all installed in the mounting through holes; The pole is installed inside the support ring, and the first insulating member is wrapped around the support ring and exposed on the outer structure of the cover plate, separating the pole from the support ring; the first receiving groove of the blocking member is provided outside the edge of the outer opening of the mounting through hole.
4. The battery cover assembly according to claim 3, characterized in that, The edge of the outer opening of the mounting through hole is positioned relative to the second receiving groove on the side closer to the first insulating element.
5. The battery cover assembly according to claim 4, characterized in that, The blocking member includes a first blocking wall, a connecting wall, and a second blocking wall connected in sequence, and is arranged to form the first receiving groove; wherein the first blocking wall and the second blocking wall are both arranged along the thickness direction of the cover plate, and the second blocking wall is arranged close to the cover plate relative to the first blocking wall; the first blocking wall is inserted into the first groove of the cover plate, and the second blocking wall is inserted into the second groove of the support ring; the second receiving groove is formed in the connecting wall.
6. The battery cover assembly according to claim 5, characterized in that, The thickness of the first barrier wall is X1, the thickness of the second barrier wall is X2, and X1 = 2X2, where 0.5mm < X2 < 0.8mm.
7. The battery cover assembly according to claim 2, characterized in that, The second receiving groove is disposed near the side wall of the blocking member away from the pole post.
8. The battery cover assembly according to claim 3, characterized in that, The blocking member is connected to the cover plate and / or the support ring; and / or The support ring is connected to the cover plate by welding; and / or The support ring has a reinforcing through hole, the first insulating member has a reinforcing protrusion, and the reinforcing protrusion is disposed within the reinforcing through hole; and / or The battery cover assembly further includes a sealing ring, which is sleeved outside the terminal post and compressed between the terminal post, the first insulating member, and the support ring; and / or There is an assembly gap between the blocking member and the support ring.
9. The battery cover assembly according to claim 1, characterized in that, A predetermined gap is formed between the blocking member and the first insulating member.
10. The battery cover assembly according to any one of claims 1 to 9, characterized in that, The barrier component is made of corrosion-resistant polymer plastic; and / or Along the thickness direction of the cover plate, the height difference between the outer surface of the blocking member away from the cover plate and the outer surface of the cover plate is S, and 0.5 mm < s < 0.8 mm; and / or The blocking member is an annular structure, and the first receiving groove is an annular groove; and / or There is an assembly gap between the blocking member and the cover plate.