Adapter, cover structure and battery
By designing the beveled groove and the second straight groove structure of the adapter piece, the problem of incomplete welding caused by the gap after riveting the adapter piece was solved, achieving higher welding tightness and deeper penetration, and improving the charging and discharging speed and heat dissipation performance of the battery.
Patent Information
- Application Number
- CN202521919447.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-05
AI Technical Summary
In the existing technology, the adapter plate is prone to gaps after riveting and deformation, resulting in incomplete welding, weld explosion, and insufficient penetration.
Design an adapter plate including a through hole, a first straight edge groove, a beveled edge groove, and a second straight edge groove. The beveled edge groove is used to limit the deformation of the riveting of the pole post, and the second straight edge groove provides the height to accommodate the weld edge after welding. The beveled edge groove has the same diameter as the first straight edge groove, which increases the penetration depth and reduces weld explosion.
It improves the tightness of electrode welding, reduces weld spatter, increases penetration depth, and enhances charging and discharging speed and heat dissipation.
Smart Images
Figure CN224683328U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery processing technology, and in particular to an adapter plate, cover plate structure and battery. Background Technology
[0002] In related technologies, the adapter plate in a battery is mainly used to connect the cell terminals and tabs, enabling the transmission of current between the inside and outside of the cell. For example... Figure 1 In existing technology, the adapter plate has a right-angle groove 500 to facilitate the riveting of the battery cell terminal after deformation. However, during riveting, the material deformed by riveting the terminal is insufficient to fill the right-angle position of the groove, resulting in incomplete riveting and gaps. Consequently, during subsequent welding of the adapter plate and terminal, the laser will cause weld spalling at these gaps. Utility Model Content
[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes an adapter piece that can improve the tightness of welding with the electrode post, reduce the phenomenon of weld explosion during the welding process, and also increase the penetration depth.
[0004] This utility model also proposes a cover plate structure having the above-mentioned adapter piece.
[0005] This utility model also proposes a battery having the above-mentioned cover plate structure.
[0006] According to a first aspect of the present invention, the adapter plate includes: an adapter plate body, a through hole in the middle of the adapter plate body, a first straight edge groove, a beveled edge groove and a second straight edge groove sequentially arranged along the axial direction of the through hole, the beveled edge groove being used to limit the deformation of one end of the pole post by riveting, the diameter of the second straight edge groove being larger than the diameter of the first straight edge groove, the second straight edge groove being used to provide a height for accommodating the weld edge after the adapter plate body and the pole post are welded, and the diameter of the beveled edge groove connecting to one end of the first straight edge groove is the same as the diameter of the first straight edge groove.
[0007] The adapter piece according to the first aspect of the present invention has at least the following beneficial effects: The adapter piece includes a through hole disposed in the middle of the adapter piece body. The through hole is sequentially provided with a first straight edge groove, a beveled edge groove, and a second straight edge groove along the axial direction. The second straight edge groove is closer to the battery cell tab than the first straight edge groove, and the diameter of the second straight edge groove is larger than the diameter of the first straight edge groove. This allows the end of the electrode post to be riveted not only to be riveted onto the beveled edge groove, thus achieving the beveled edge groove's limitation on the electrode post, but also to avoid the gaps that would exist in the original straight edge groove after riveting, thereby reducing the occurrence of weld explosions. Simultaneously, the design structure of the beveled edge groove results in a deeper weld penetration, faster charging and discharging speed, and better heat dissipation. Furthermore, the larger diameter of the second straight edge groove than the first straight edge groove provides a greater capacity to accommodate electrode post deformation when weld edges appear during the welding process between the electrode post and the adapter piece. Therefore, the adapter piece structure of this application can improve the tightness of the welding with the electrode post, reduce weld explosions during the welding process, and increase the weld penetration.
[0008] According to some embodiments of the present invention, the diameter of the end of the inclined groove near the second straight groove is smaller than the diameter of the second straight groove.
[0009] According to some embodiments of this utility model, the adapter plate body is provided with several through positioning holes to facilitate positioning of the lower plastic part.
[0010] According to some embodiments of this utility model, three positioning holes are provided symmetrically at the center.
[0011] According to some embodiments of this utility model, the adapter plate is provided with several through-holes for weight reduction.
[0012] According to some embodiments of this utility model, the weight reduction holes are waist-shaped holes and multiple holes are provided along the circumference.
[0013] According to some embodiments of this utility model, the weight reduction hole is located further away from the center of the adapter plate body than the positioning hole.
[0014] According to the second aspect embodiment of the present invention, the cover plate structure includes the adapter piece of the first aspect embodiment of the present invention, and further includes a top cover piece, an upper plastic, a lower plastic, a sealing ring, and an electrode post. The top cover piece is provided with a mounting hole, the upper plastic and the lower plastic are respectively disposed on both sides of the top cover piece, the electrode post passes through the mounting hole, the adapter piece is disposed on the side of the lower plastic away from the top cover piece, and the sealing ring is sleeved on the electrode post and located between the electrode post and the top cover piece.
[0015] The cover plate structure according to the embodiments of the present utility model has at least the following beneficial effects: This cover plate structure includes the adapter piece in the first aspect embodiment above, and also includes a top cover piece, an upper plastic, a lower plastic, a sealing ring, and an electrode post. The upper plastic and the lower plastic are respectively located on both sides of the top cover piece, while the adapter piece is located on the side of the lower plastic that is away from the top cover piece, and the second straight edge groove is farther away from the lower plastic than the first straight edge groove. The sealing ring is sleeved on the electrode post and inserted into the top cover piece. After the electrode post is riveted onto the oblique edge groove on the adapter piece, the electrode post and the oblique edge groove of the adapter piece are welded together, thereby obtaining a cover plate structure with a large weld penetration. Furthermore, during the welding process, the contact between the oblique edge groove of the adapter piece and the electrode post is closer, reducing the probability of weld explosion.
[0016] The battery according to a third aspect embodiment of the present invention includes the cover plate structure described in the second aspect embodiment of the present invention.
[0017] The battery according to the third aspect embodiment of the present invention has at least the following beneficial effects: the battery includes the cover plate structure of the second aspect embodiment, therefore, the battery has a greater melting depth, faster charging and discharging speed, and better heat dissipation.
[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0020] Figure 1 This is a cross-sectional view of the adapter plate structure in the prior art;
[0021] Figure 2 This is a schematic diagram of the structure of one embodiment of the adapter plate of this utility model;
[0022] Figure 3 for Figure 2 The cross-sectional view of the adapter plate shown.
[0023] Figure label:
[0024] Adapter plate body 100; through hole 200; first straight edge groove 210; beveled edge groove 220; second straight edge groove 230; positioning hole 300; weight reduction hole 400; right angle groove 500. Detailed Implementation
[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0026] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.
[0027] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0028] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.
[0029] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0030] The following is for reference. Figures 2 to 3 This invention describes the adapter plate, cover plate structure, and battery according to embodiments of the present invention.
[0031] like Figures 2 to 3As shown, the adapter plate according to the first aspect of the present invention includes: an adapter plate body 100, a through hole 200 in the middle of the adapter plate body 100, a first straight edge groove 210, a beveled edge groove 220 and a second straight edge groove 230 sequentially arranged along the axial direction in the through hole 200, the beveled edge groove 220 being used to limit one end of the pole post to be deformed by riveting, the diameter of the second straight edge groove 230 being larger than the diameter of the first straight edge groove 210, the second straight edge groove 230 being used to provide a height for accommodating the weld edge after the adapter plate body 100 and the pole post are welded, and the diameter of the beveled edge groove 220 connecting to one end of the first straight edge groove 210 is the same as the diameter of the first straight edge groove 210.
[0032] Understandably, this adapter includes a through hole 200 located in the middle of the adapter body 100. The through hole 200 has a first straight edge groove 210, a beveled edge groove 220, and a second straight edge groove 230 arranged sequentially along the axial direction. The second straight edge groove 230 is closer to the battery cell tab than the first straight edge groove 210, and its diameter is larger than that of the first straight edge groove 210. This allows the riveted end of the electrode post to be riveted onto the beveled edge groove 220, thus limiting the electrode post's position. Furthermore, due to the design of the beveled edge groove 220… The design avoids the gaps that would occur after riveting the original straight-edged groove, thus reducing the occurrence of weld spalling. At the same time, the design structure of the beveled groove 220 allows for deeper penetration, faster charging and discharging speed, and better heat dissipation. In addition, the diameter of the second straight-edged groove 230 is larger than that of the first straight-edged groove 210, thereby providing a height to accommodate the deformation of the electrode post when weld edges appear during the welding process between the electrode post and the adapter piece. Therefore, the adapter piece structure of this application can improve the tightness of welding with the electrode post, reduce the phenomenon of weld spalling during the welding process with the electrode post, and also increase the penetration depth.
[0033] The outer diameter of the first straight edge groove 210 is the same as the outer diameter of the pole post before riveting, so that the pole post can be riveted onto the inclined edge groove 220 during riveting.
[0034] It is understandable that the diameter of the end of the beveled groove 220 closest to the second straight groove 230 is smaller than the diameter of the second straight groove 230. For example, as... Figures 2 to 3 As shown, in this embodiment, the diameter of the end of the oblique groove 220 near the second straight groove 230 is smaller than the diameter of the second straight groove 230. This indicates that the second straight groove 230 does not smoothly transition to the oblique groove 220, but rather there is a plateau step, which increases the deformation space after the pole post is riveted in the radial direction and reduces the damage to the adapter piece itself.
[0035] Understandably, the adapter plate body 100 is provided with several through positioning holes 300 to facilitate the positioning of the lower plastic part. For example, as Figures 2 to 3As shown, in this embodiment, the positioning hole 300 of the adapter plate body 100 can achieve positioning with the lower plastic part, thereby avoiding relative rotation.
[0036] It is understandable that three positioning holes 300 are provided symmetrically around the center. For example, as... Figures 2 to 3 As shown, in this embodiment, three positioning holes 300 are centrally symmetrically arranged, but other different numbers can also be designed as needed.
[0037] Understandably, the adapter plate has several through-holes 400 for weight reduction. For example, as... Figures 2 to 3 As shown, in this embodiment, the design of the weight reduction hole 400 reduces the weight of the adapter piece, thereby reducing the battery weight.
[0038] It is understandable that the weight reduction holes 400 are oblong holes and multiple of them are provided along the circumference. For example, as Figures 2 to 3 As shown, in this embodiment, the weight reduction holes 400 are multiple waist-shaped holes arranged circumferentially, which can reduce the weight of the adapter piece or even the entire battery as much as possible.
[0039] It is understandable that the weight reduction hole 400 is located further away from the center of the adapter plate body 100 than the positioning hole 300. For example, as Figures 2 to 3 As shown, in this embodiment, the weight reduction hole 400 is farther from the center than the positioning hole 300, thereby maximizing weight reduction.
[0040] According to a second aspect of the present invention, the cover plate structure includes: the adapter piece mentioned in the first aspect, and further includes a top cover piece, an upper plastic, a lower plastic, a sealing ring, and a pole post. The top cover piece is provided with a mounting hole, the upper plastic and the lower plastic are respectively disposed on both sides of the top cover piece, the pole post passes through the mounting hole, the adapter piece is disposed on the side of the lower plastic away from the top cover piece, and the sealing ring is sleeved on the pole post and located between the pole post and the top cover piece.
[0041] It is understood that this cover plate structure includes the adapter piece in the first aspect embodiment, as well as a top cover plate, an upper plastic, a lower plastic, a sealing ring, and an electrode post. The upper and lower plastics are located on both sides of the top cover plate, while the adapter piece is located on the side of the lower plastic away from the top cover plate. The second straight edge groove 230 is further away from the lower plastic than the first straight edge groove 210. The sealing ring is sleeved on the electrode post and inserted into the top cover plate. After the electrode post is riveted onto the oblique edge groove 220 on the adapter piece, the electrode post and the oblique edge groove 220 of the adapter piece are welded together to obtain a cover plate structure with a large weld penetration. During the welding process, the contact between the oblique edge groove 220 of the adapter piece and the electrode post is closer, which reduces the probability of weld explosion.
[0042] The battery according to a third aspect embodiment of the present invention includes the cover plate structure described in the second aspect.
[0043] It is understood that in this embodiment, the battery includes the cover plate structure of the second aspect embodiment, and therefore, the battery has a greater melting depth, faster charging and discharging speed, and better heat dissipation.
[0044] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.
Claims
1. An adapter plate, characterized in that, include: The adapter body includes a through hole in the middle. The through hole has a first straight edge groove, a beveled groove, and a second straight edge groove arranged sequentially along the axial direction. The beveled groove is used to limit the deformation of one end of the pole post during riveting. The diameter of the second straight edge groove is larger than the diameter of the first straight edge groove. The second straight edge groove is used to provide a height for accommodating the weld edge after the adapter body and the pole post are welded. The diameter of the beveled groove connecting to the first straight edge groove is the same as the diameter of the first straight edge groove.
2. The adapter plate according to claim 1, characterized in that, The diameter of the end of the inclined groove closest to the second straight groove is smaller than the diameter of the second straight groove.
3. The adapter plate according to claim 1, characterized in that, The adapter plate body is provided with several through positioning holes to facilitate the positioning of the lower plastic part.
4. The adapter plate according to claim 3, characterized in that, The positioning holes are provided symmetrically at the center.
5. The adapter plate according to claim 3, characterized in that, The adapter plate is provided with several through-holes for weight reduction.
6. The adapter plate according to claim 5, characterized in that, The weight-reducing holes are waist-shaped and multiple of them are provided along the circumference.
7. The adapter plate according to claim 6, characterized in that, The weight reduction hole is located further away from the center of the adapter plate body than the positioning hole.
8. A cover plate structure, characterized in that, The adapter plate, including any one of claims 1-7, further includes a top cover plate, an upper plastic, a lower plastic, a sealing ring, and an electrode post. The top cover plate has a mounting hole. The upper plastic and the lower plastic are respectively disposed on both sides of the top cover plate. The electrode post passes through the mounting hole. The adapter plate is disposed on the side of the lower plastic away from the top cover plate. The sealing ring is sleeved on the electrode post and located between the electrode post and the top cover plate.
9. A battery, characterized in that, Includes the cover plate structure described in claim 8 above.