Current collector plate, battery top cover and battery
By designing a bending groove structure with a first bending section and a second bending section on the current collector, the problem of the current collector breaking during bending is solved, achieving a more convenient bending operation and a more stable structural design, thus improving the overall performance of the battery.
Patent Information
- Application Number
- CN202522065010.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-09-23
AI Technical Summary
The current collector is not easy to bend during battery assembly, is prone to breakage, affects assembly accuracy, occupies space, and may pose safety risks.
The design of the first and second bends of the collector plate, with the structures of the first and second bend grooves respectively, allows the collector plate to be bent more easily and avoids breakage. By designing the groove openings to face opposite directions after bending, the stress distribution is optimized.
The improved bending ease of the current collector prevents breakage, enhances battery stability and reliability, and ensures structural safety and durability.
Smart Images
Figure CN224934951U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery technology, specifically to a current collector, a battery top cover, and a battery. Background Technology
[0002] As a crucial component of new energy batteries, the current collector's design directly impacts battery performance and safety. With increasing demands for battery charging and discharging power, related technologies primarily aim to provide higher current carrying capacity by increasing the thickness and size of the current collector. However, during battery assembly, an excessively thick current collector is difficult to bend, leading to poor bending performance. This not only affects assembly accuracy but also occupies significant internal battery space. Furthermore, bending the current collector may introduce a risk of breakage. Utility Model Content
[0003] The embodiments of this utility model provide a current collector, a battery top cover, and a battery, which can improve the technical problem that the current collector is not easy to bend and is even easy to break during bending.
[0004] In a first aspect, an embodiment of the present invention provides a collector plate, comprising a first welding part, a first bending part, a connecting part, a second bending part, and a second welding part connected in sequence;
[0005] The first welding part can be welded to the pole post;
[0006] The second welding part can be welded to the electrode;
[0007] The first bending portion is provided with a first bending groove; the first bending portion can be bent toward the side where the first bending groove is located, so that the connecting portion and the first welding portion come close together;
[0008] The second bending portion has a second bending groove, and the opening of the second bending groove faces the opposite direction to the opening of the first bending groove; the second bending portion can be bent toward the side where the second bending groove is located, so that the connecting portion and the second welding portion come closer together.
[0009] In this embodiment, the structural design of the first bending groove on the first bending portion and the second bending groove on the second bending portion makes it easier for the first bending portion to bend towards the side where the first bending groove is located, thereby ensuring that the connecting portion and the first welded portion can come closer together. Simultaneously, the second bending portion also makes it easier to bend towards the side where the second bending groove is located, allowing the connecting portion and the second welded portion to come closer together. This design not only makes the bending operation of the collector plate more convenient but also effectively avoids breakage of the collector plate during bending. Furthermore, after bending, both the first and second bending grooves are located inside the bending point, ensuring that the compressive stress and load-bearing capacity of the first and second bending portions in the bending state are greater than the tensile stress, thus optimizing the stress distribution. This design further enhances the overall stability and reliability of the collector plate, ensuring its structure is safer and more durable.
[0010] In one embodiment, the ratio of the thickness of the bottom wall of the first bending groove to the thickness of the first bending portion is between 25% and 92%, and / or the ratio of the thickness of the bottom wall of the second bending groove to the thickness of the second bending portion is between 25% and 92%.
[0011] In this embodiment, the ratio of the thickness of the bottom wall of the first bending groove to the thickness of the first bending portion is between 25% and 92%, and / or the ratio of the thickness of the bottom wall of the second bending groove to the thickness of the second bending portion is between 25% and 92%. This makes the collector plate easier to bend while maintaining the flow capacity of the collector plate and the structural strength of the bending point of the collector plate.
[0012] In one embodiment, the width of the first bending groove is between 0.5 mm and 4.0 mm, and / or the width of the second bending groove is between 0.5 mm and 4.0 mm. In this embodiment, the width of the first bending groove and / or the second bending groove is set to ensure that the collector plate is easier to bend, while avoiding the impact on the flow capacity of the collector plate due to excessive width.
[0013] In one embodiment, both the first bending groove and the second bending groove are rectangular grooves; or,
[0014] Both the first bending groove and the second bending groove are arc-shaped grooves; or,
[0015] One of the first bending groove and the second bending groove is a rectangular groove, and the other is an arc-shaped groove.
[0016] In this embodiment, both the first and second bending grooves can be rectangular grooves according to the requirements of manufacturing cost and manufacturing efficiency; or both the first and second bending grooves can be arc-shaped grooves according to the requirements of strength and durability of the structure after bending; or a compromise can be selected in which one of the first and second bending grooves is a rectangular groove and the other is an arc-shaped groove.
[0017] In one embodiment, the second welding portion includes a welding area and a connecting area connected to each other. The connecting area is connected to the second bending portion, and the welding area is capable of welding to an electrode. In this embodiment, the partitioning of the welding area and the connecting area of the second welding portion ensures the consistency of the welding position each time the electrode is welded to the second welding portion.
[0018] In one embodiment, the welding area protrudes from the connection area on the side facing the electrode. In this embodiment, the protruding welding area facilitates electrode welding and mounting on the welding area.
[0019] In one embodiment, the side of the welding area away from the electrode is a plane. In this embodiment, because the side of the welding area away from the electrode is a plane, the welding structure can better weld the electrode onto the welding area.
[0020] In one embodiment, the height of the welding area protruding from the connection area on the side facing the electrode is less than 2 mm. In this embodiment, since the height of the welding area protrusion is less than 2 mm, it is convenient to weld the electrode onto the welding area, while avoiding the welding area protruding too high, which would cause the current collector to occupy too much internal battery space.
[0021] In one embodiment, the number of welding areas is at least two, and the at least two welding areas are distributed along the circumference of the second welding portion, or symmetrically distributed about the central axis of the second welding portion. In this embodiment, this distribution of welding areas makes it easier for the electrode to be welded to the manifold.
[0022] In one embodiment, the ratio of the area of the welding zone to the area of the second welded part is between 20% and 70%. In this embodiment, setting this ratio range ensures both sufficient positions for welding electrodes on the second welded part and maintains the overall structural strength of the second welded part.
[0023] In one embodiment, the thickness of the connection area is between 0.3 mm and 1.0 mm, and the thickness of the welding area is between 0.2 mm and 0.6 mm; or,
[0024] The thickness of the connection area is between 0.3 mm and 0.6 mm, and the thickness of the welding area is between 0.1 mm and 0.4 mm.
[0025] In this embodiment, by setting the thickness of the connection area between 0.3mm and 1.0mm and the thickness of the welding area between 0.2mm and 0.6mm, the current collector can be used at the top cover of the positive terminal of the battery to withstand a larger current density. By setting the thickness of the connection area between 0.3mm and 0.6mm and the thickness of the welding area between 0.1mm and 0.4mm, the current collector can be used at the top cover of the negative terminal of the battery, which satisfies the requirement of withstanding a relatively lower current density at the negative terminal while allowing for a thinner current collector to reduce costs.
[0026] In one embodiment, the thickness of the first welded portion and / or the connecting portion is between 0.3 mm and 1.0 mm; or,
[0027] The thickness of the first welded portion and / or the connecting portion is between 0.3 mm and 0.6 mm.
[0028] In this embodiment, by setting the thickness of the first welded portion and / or the connecting portion between 0.3mm and 1.0mm, the current collector can be used at the top cover of the positive terminal of the battery to withstand a larger current density. By setting the thickness of the first welded portion and / or the connecting portion between 0.3mm and 0.6mm, the current collector can be used at the top cover of the negative terminal of the battery, which satisfies the requirement of withstanding a relatively low current density at the negative terminal while also allowing for a suitable reduction in the thickness of the current collector to lower costs.
[0029] Secondly, embodiments of this utility model provide a battery top cover, comprising:
[0030] Cover;
[0031] A terminal post, wherein the terminal post passes through the cover and both ends are exposed on both sides of the cover; and,
[0032] The first welding part of the collector plate described in the first aspect is welded to the pole post.
[0033] In this embodiment, during the production and assembly of the battery top cover, the structural design based on the current collector not only facilitates the bending operation of the current collector, thereby improving the assembly efficiency of the battery top cover, but also effectively prevents the current collector from breaking during the bending process, thus reducing production losses during the battery top cover manufacturing process. After the battery top cover is assembled, the first and second bending grooves of the current collector are both located on the inner side of the bending point, so that the compressive stress and load-bearing capacity of the first and second bending parts in the bending state are greater than the tensile stress, thereby optimizing the stress distribution and further improving the overall stability and reliability of the battery top cover, ensuring that its structure is safer and more durable.
[0034] In one embodiment, a support portion is provided on the side of the cover near the collector plate, which supports the second welded portion of the bent collector plate. In this embodiment, by supporting the second welded portion of the bent collector plate with the support portion, direct contact between the first welded portion and the connecting portion, as well as direct contact between the second welded portion and the connecting portion, can be avoided after the collector plate is squeezed, thus ensuring the stability of the collector plate on the cover.
[0035] In one embodiment, the cover is provided with an injection hole, and the collector plate can be bent at the cover to avoid the injection hole. In this embodiment, by avoiding the injection hole with the bent collector plate, the collector plate will not obstruct the injected electrolyte when it is injected through the injection hole, thereby improving the injection effect.
[0036] In one embodiment, the cover is provided with a pressure relief valve hole, and the collector plate can be bent at the cover to avoid at least a portion of the pressure relief valve hole. In this embodiment, by bending the collector plate to avoid at least a portion of the pressure relief valve, the collector plate is prevented from affecting the pressure relief effect of the pressure relief valve hole.
[0037] In one embodiment, the first welding portion is provided with a welding hole, through which the electrode post can pass to be welded to the first welding portion. In this embodiment, the welding hole ensures the accuracy of the connection position between the electrode post and the collector plate, as well as the stability of the connection after welding.
[0038] In one embodiment, a positioning post is provided on the cover, and a positioning hole is provided on the first welded part, with the positioning post passing through the positioning hole. In this embodiment, the positioning cooperation of the positioning post and the positioning hole ensures the accuracy of their positions during assembly while improving the connection stability after assembly.
[0039] Thirdly, embodiments of the present invention provide a battery, including the battery top cover of the second aspect.
[0040] The beneficial effects of the embodiments of this utility model are as follows:
[0041] In the embodiments of this utility model, by setting a first bending groove on the first bending portion and a second bending groove on the second bending portion, it is possible to make it easier to bend the first bending portion toward the side where the first bending groove is located during the bending process of the collector plate, so as to control the connecting portion to approach the first welded portion, and it is easier to bend the second bending portion toward the side where the second bending groove is located, so as to control the connecting portion to approach the second welded portion. This improves the technical problem that the collector plate is not easy to bend and is even easy to break during the bending process. Furthermore, since the first bending groove and the second bending groove are both located inside the bending point after bending, the stress at the first bending groove and the second bending groove is more reasonable, making the collector plate structure more stable and reliable after bending. Attached Figure Description
[0042] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0043] Figure 1 This is a first-view perspective three-dimensional schematic diagram of the collector disk in the deployed state provided by an embodiment of this utility model;
[0044] Figure 2 This is a two-dimensional schematic diagram of the collector disk in the deployed state provided by an embodiment of the present invention;
[0045] Figure 3 This is a schematic diagram of the structure of the collector plate in a bent state according to an embodiment of the present invention;
[0046] Figure 4 This is a schematic diagram of the structure of the cover and pole provided in an embodiment of this utility model;
[0047] Figure 5 This is a schematic diagram of the structure of the cover, pole, and the collector plate in a bent state provided in an embodiment of this utility model;
[0048] Figure 6 This is a schematic diagram of the structure of the cover, pole, and collector plate in the unfolded state provided in an embodiment of this utility model.
[0049] Explanation of reference numerals in the attached figures:
[0050] 1. Collector plate; 11. First welding part; 111. Welding hole; 112. Positioning hole; 12. First bending part; 121. First bending groove; 13. Connecting part; 14. Second bending part; 141. Second bending groove; 15. Second welding part; 151. Welding area; 152. Connecting area;
[0051] 2. Cover; 21. Support; 22. Injection port; 23. Pressure relief valve port; 24. Positioning pin;
[0052] 3. Pole post. Detailed Implementation
[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.
[0054] It should be noted that in this application, "and / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / ", unless otherwise specified, generally indicates that the related objects before and after it are in an "or" relationship.
[0055] Firstly, combining Figure 1-3 As can be seen, the embodiment of this utility model provides a collector plate 1, which includes a first welding part 11, a first bending part 12, a connecting part 13, a second bending part 14, and a second welding part 15 connected in sequence;
[0056] The first welding part 11 can be welded to the pole post;
[0057] The second welding part 15 can be welded to the electrode;
[0058] The first bending portion 12 is provided with a first bending groove 121; the first bending portion 12 can be bent toward the side where the first bending groove 121 is located, so that the connecting portion 13 and the first welding portion 11 come close together;
[0059] The second bending portion 14 has a second bending groove 141, and the opening of the second bending groove 141 faces the opposite direction to the opening of the first bending groove 121. The second bending portion 14 can be bent toward the side where the second bending groove 141 is located, so that the connecting portion 13 and the second welding portion 15 come closer together.
[0060] The structural design of the first bending groove 121 on the first bending portion 12 and the second bending groove 141 on the second bending portion 14 makes it easier for the first bending portion 12 to bend towards the side where the first bending groove 121 is located, thereby ensuring that the connecting portion 13 and the first welded portion 11 can be brought closer together. Simultaneously, the second bending portion 14 also makes it easier to bend towards the side where the second bending groove 141 is located, allowing the connecting portion 13 and the second welded portion 15 to be brought closer together. This design not only makes the bending operation of the collector plate 1 more convenient but also effectively avoids breakage of the collector plate 1 during bending. Furthermore, after bending, both the first bending groove 121 and the second bending groove 141 are located inside the bend, ensuring that the compressive stress and load-bearing capacity of the first bending portion 12 and the second bending portion 14 in the bent state are greater than the tensile stress, thus optimizing the stress distribution. This design further enhances the overall stability and reliability of the collector plate 1, ensuring its structure is safer and more durable.
[0061] In one embodiment, the ratio of the thickness of the bottom wall of the first bending groove 121 to the thickness of the first bending portion 12, and the ratio of the thickness of the bottom wall of the second bending groove 141 to the thickness of the second bending portion 14, are both between 25% and 92%. In other implementations, the ratio of the thickness of the bottom wall of the first bending groove 121 to the thickness of the first bending portion 12, or the ratio of the thickness of the bottom wall of the second bending groove 141 to the thickness of the second bending portion 14, can be adjusted to other values as needed.
[0062] The design that the ratio of the thickness of the bottom wall of the first bending groove 121 to the thickness of the first bending portion 12, and the ratio of the thickness of the bottom wall of the second bending groove 141 to the thickness of the second bending portion 14 are between 25% and 92% can make the collector plate 1 easier to bend while maintaining the flow capacity of the collector plate 1 and the structural strength of the bending point of the collector plate 1.
[0063] In one embodiment, the widths of the first bending groove 121 and the second bending groove 141 are between 0.5 mm and 4.0 mm. In other implementations, the widths of the first bending groove 121 or the second bending groove 141 can be adjusted to other values as needed.
[0064] The widths of the first bending groove 121 and the second bending groove 141 are set between 0.5mm and 4.0mm, which can ensure that the collector plate 1 is easier to bend, and can also avoid affecting the flow capacity of the collector plate 1 due to excessive width.
[0065] In one embodiment, the first bending groove 121 and the second bending groove 141 are both rectangular grooves to reduce the processing difficulty of the first bending groove 121 and the second bending groove 141, improve the production efficiency of the collector plate 1, and reduce its manufacturing cost.
[0066] In one embodiment, both the first bending groove 121 and the second bending groove 141 are arc-shaped grooves. The arc-shaped design of both the first bending groove 121 and the second bending groove 141 can smoothly disperse stress when the collector plate 1 is bent, avoiding stress concentration at a certain point or in a certain area, which can significantly improve the strength and durability of the structure after the collector plate 1 is bent.
[0067] For example, the radius of the arc portion of the first bending groove 121 and the second bending groove 141 of the arc-shaped groove is less than or equal to 10 mm, and the opening width is less than or equal to 10 mm.
[0068] In one embodiment, one of the first bending groove 121 and the second bending groove 141 is a rectangular groove and the other is an arc-shaped groove; specifically, during the actual production and processing of the collector plate 1, the groove type of the first bending groove 121 and the second bending groove 141 can be selected according to the usage requirements.
[0069] In one embodiment, the second welding portion 15 includes a welding area 151 and a connecting area 152 connected to each other. The connecting area 152 is connected to the second bending portion 14, and the welding area 151 can be welded to the electrode. After the electrode is welded to the welding area 151, the electrode can sequentially pass through the welding area 151, the connecting area 152, the second bending portion 14, the connecting portion 13, the first bending portion 12, and the first welding portion 11 to connect with the electrode post welded to the first welding portion 11.
[0070] The partitioning of the welding area 151 and the connection area 152 of the second welding part 15 ensures the consistency of the welding position each time the electrode is welded to the second welding part 15.
[0071] In one embodiment, the welding area 151 protrudes from the connection area 152 on the side facing the electrode, making it easier to weld the electrode onto the welding area 151.
[0072] In one embodiment, the side of the welding area 151 facing away from the electrode is a plane, so that the welding effect is better when the electrode is welded to the welding area 151.
[0073] In one embodiment, the height of the welding area 151 protruding from the connection area 152 on the side facing the electrode is less than 2mm. By setting the height of the protrusion of the welding area 151, it is convenient to weld the electrode onto the welding area 151, and it can also avoid the welding area 151 protruding too high, which would cause the current collector 1 to occupy too much internal battery space.
[0074] In one embodiment, there are at least two welding areas 151, which are distributed along the circumference of the second welding portion 15 or symmetrically distributed about the central axis of the second welding portion 15. This distribution of welding areas 151 makes it easier for the electrodes to be welded to the collector plate 1.
[0075] In one embodiment, the ratio of the area of the welding area 151 to the area of the second welding portion 15 is between 20% and 70%. The welding area 151 is thinner than the connecting area 152. Therefore, the ratio of the area of the welding area 151 to the area of the second welding portion 15 is set within this range to ensure that there are sufficient welding electrode positions on the second welding portion 15, while also ensuring the overall structural strength of the second welding portion 15.
[0076] In one embodiment, the thickness of the connection area 152 is between 0.3 mm and 1.0 mm, and the thickness of the welding area 151 is between 0.2 mm and 0.6 mm.
[0077] In one embodiment, the thickness of the first weld portion 11 and / or the connecting portion 13 is between 0.3 mm and 1.0 mm.
[0078] For example, when the current collector 1 is used at the top cover of the positive terminal of the battery, the thickness of the connection area 152 of the first welding part 11, the connecting part 13 and the second welding part 15 is between 0.3 mm and 1.0 mm, and the thickness of the welding area 151 is between 0.2 mm and 0.6 mm, so as to withstand a large current density.
[0079] In one embodiment, the thickness of the connection area 152 is between 0.3 mm and 0.6 mm, and the thickness of the welding area 151 is between 0.1 mm and 0.4 mm.
[0080] In one embodiment, the thickness of the first weld portion 11 and / or the connecting portion 13 is between 0.3 mm and 0.6 mm.
[0081] For example, when the current collector 1 is used at the top cover of the negative terminal of the battery, the thickness of the connection area 152 of the first welding part 11, the connecting part 13 and the second welding part 15 is between 0.3 mm and 0.6 mm, and the thickness of the welding area 151 is between 0.1 mm and 0.4 mm. The current collector 1 at the negative terminal has relatively low requirements for current density carrying capacity, so the current collector 1 is appropriately thinned to reduce costs.
[0082] Secondly, combining Figure 4-6 As can be seen, embodiments of this utility model provide a battery top cover, comprising:
[0083] Cover 2;
[0084] The pole post 3 passes through the cover 2, with both ends exposed on both sides of the cover 2; and,
[0085] The first aspect of the collector plate 1 is welded to the pole post 3 by the first welding part 11.
[0086] By designing the first bending groove 121 on the first bending portion 12 and the second bending groove 141 on the second bending portion 14 of the collector plate 1, the first bending portion 12 can be bent more easily toward the side where the first bending groove 121 is located, thereby ensuring that the connecting portion 13 and the first welding portion 11 can come closer together; at the same time, the second bending portion 14 can also be bent more easily toward the side where the second bending groove 141 is located, so that the connecting portion 13 and the second welding portion 15 can come closer together.
[0087] During the production and assembly of the battery top cover, the structural design of the current collector 1 not only makes the bending operation of the current collector 1 more convenient, thereby improving the assembly efficiency of the battery top cover, but also effectively avoids the current collector 1 from breaking during the bending process, thereby reducing production losses in the battery top cover process.
[0088] After the battery top cover is manufactured and assembled, the first bending groove 121 and the second bending groove 141 of the current collector 1 are both located inside the bending point, so that the compressive stress and load-bearing capacity of the first bending part 12 and the second bending part 14 in the bending state are greater than the tensile stress, thereby optimizing the stress distribution, further improving the overall stability and reliability of the battery top cover, and ensuring that its structure is safer and more durable.
[0089] In one embodiment, a support portion 21 is provided on the side of the cover 2 near the collector plate 1, and the support portion 21 can support the second welded portion 15 of the bent collector plate 1.
[0090] By supporting the second welded part 15 of the bent collector plate 1 with the support part 21, the direct contact between the first welded part 11 and the connecting part 13, as well as the direct abutment between the second welded part 15 and the connecting part 13, after the collector plate 1 is squeezed, can be avoided, thus ensuring the stability of the collector plate 1 on the cover 2.
[0091] In one embodiment, the cover 2 is provided with a liquid injection hole 22, and the collecting plate 1 can be bent at the cover 2 to avoid the liquid injection hole 22.
[0092] By bending the manifold 1 to avoid the injection hole 22, the manifold 1 will not obstruct the injected electrolyte when it is injected through the injection hole 22, thereby improving the injection effect.
[0093] In one embodiment, the cover 2 is provided with a pressure relief valve hole 23, and the collector plate 1 can be bent at the cover 2 to avoid at least part of the pressure relief valve hole 23.
[0094] The bent manifold 1 avoids at least part of the pressure relief valve hole 23, so as to prevent the manifold 1 from affecting the pressure relief effect of the pressure relief valve hole 23.
[0095] In one embodiment, a welding hole 111 is provided on the first welding part 11, through which the electrode post 3 can pass to the welding hole 111 for welding onto the first welding part 11. The welding hole 111 ensures the accuracy of the connection position between the electrode post 3 and the collector plate 1, and ensures the stability of the connection after the electrode post 3 and the collector plate 1 are welded.
[0096] In one embodiment, a positioning post 24 is provided on the cover 2, and a positioning hole 112 is provided on the first welding part 11, with the positioning post 24 passing through the positioning hole 112. When the collector plate 1 and the cover 2 are assembled, the positioning cooperation of the positioning post 24 and the positioning hole 112 ensures the accuracy of their positions during assembly and improves the connection stability after assembly.
[0097] For example, the cover 2 has two or more positioning posts 24 arranged in two rows. There are positioning holes 112 on both sides of the first welding part 11. The two rows of positioning posts 24 extend into the positioning holes 112 on both sides of the first welding part 11 to position the first welding part 11.
[0098] Thirdly, embodiments of the present invention provide a battery, including the battery top cover of the second aspect.
[0099] The battery has all the beneficial effects of the battery top cover described in the second aspect above, which will not be repeated here.
[0100] The battery can be a rechargeable battery or other types of battery, and this application does not specifically limit it.
[0101] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A collector disk, characterized in that, It includes a first welded part, a first bent part, a connecting part, a second bent part, and a second welded part connected in sequence; The first welding part can be welded to the pole post; The second welding part can be welded to the electrode; The first bending portion is provided with a first bending groove; the first bending portion can be bent toward the side where the first bending groove is located, so that the connecting portion and the first welding portion come close together; The second bending portion has a second bending groove, and the opening of the second bending groove faces the opposite direction to the opening of the first bending groove; the second bending portion can be bent toward the side where the second bending groove is located, so that the connecting portion and the second welding portion come closer together.
2. A collector disk according to claim 1, characterized in that, The ratio of the thickness of the bottom wall of the first bending groove to the thickness of the first bending portion is between 25% and 92%, and / or the ratio of the thickness of the bottom wall of the second bending groove to the thickness of the second bending portion is between 25% and 92%.
3. A collector disk according to claim 1, characterized in that, The width of the first bending groove is between 0.5 mm and 4.0 mm, and / or the width of the second bending groove is between 0.5 mm and 4.0 mm.
4. A collector disk according to claim 1, characterized in that, Both the first bending groove and the second bending groove are rectangular grooves; or, Both the first bending groove and the second bending groove are arc-shaped grooves; or, One of the first bending groove and the second bending groove is a rectangular groove, and the other is an arc-shaped groove.
5. A collector disk according to claim 1, characterized in that, The second welding part includes a welding area and a connecting area connected to each other. The connecting area is connected to the second bending part, and the welding area can be welded to an electrode.
6. A collector disk according to claim 5, characterized in that, The welding area protrudes from the connection area on the side facing the electrode.
7. A collector disk according to claim 6, characterized in that, The welding area protrudes from the connection area by less than 2 mm on the side facing the electrode.
8. A collector disk according to claim 5, characterized in that, The side of the welding area away from the electrode is a plane.
9. A collector disk according to claim 5, characterized in that, The number of welding zones is at least two, and the at least two welding zones are distributed along the circumference of the second welding part, or symmetrically distributed about the central axis of the second welding part.
10. A collector disk according to claim 5, characterized in that, The ratio of the area of the welding zone to the area of the second welding part is between 20% and 70%.
11. A collector disk according to claim 5, characterized in that, The thickness of the connection area is between 0.3 mm and 1.0 mm, and the thickness of the welding area is between 0.2 mm and 0.6 mm; or, The thickness of the connection area is between 0.3 mm and 0.6 mm, and the thickness of the welding area is between 0.1 mm and 0.4 mm.
12. A collector disk according to any one of claims 1-10, characterized in that, The thickness of the first welded portion and / or the connecting portion is between 0.3 mm and 1.0 mm; or, The thickness of the first welded portion and / or the connecting portion is between 0.3 mm and 0.6 mm.
13. A battery top cover, characterized in that, include: Cover; The electrode post is inserted through the cover and its two ends are exposed on both sides of the cover. and, The collector plate according to any one of claims 1-12, wherein the first welding part is welded to the pole post.
14. A battery top cover according to claim 13, characterized in that, A support portion is provided on the side of the cover near the collector plate, which can support the second welded portion of the collector plate after it is bent.
15. A battery top cover according to claim 13, characterized in that, The cover is provided with a liquid injection hole, and the collecting plate can be bent at the cover to avoid the liquid injection hole.
16. A battery top cover according to claim 13, characterized in that, The cover is provided with a pressure relief valve hole, and the collector plate can be bent at the cover to avoid at least part of the pressure relief valve hole.
17. A battery top cover according to claim 13, characterized in that, The first welding part is provided with a welding hole, and the pole is inserted into the welding hole and welded to the first welding part.
18. A battery top cover according to claim 13, characterized in that, The cover is provided with a positioning post, and the first welded part is provided with a positioning hole, with the positioning post passing through the positioning hole.
19. A battery, characterized in that, Includes the battery top cover according to any one of claims 13-18.