Cover plate assembly and battery cell

Abstract

The utility model discloses a cover plate assembly and a battery monomer, the cover plate assembly comprises: a cover plate body, on which a mounting hole is formed; the pole comprises a pole body and a connecting plate which are connected, the pole body is arranged in the mounting hole, and the connecting plate is arranged on one side, facing the battery cell, of the cover plate body. According to the cover plate assembly provided by the utility model, through the design of the split type pole, the over-current capability is ensured, the consumption of raw materials is reduced, the cost for purchasing the raw materials is reduced, the production efficiency is improved, the whole structure is simple, the assembly is convenient, and the assembly difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a cover plate assembly and a battery monomer. Background Art

[0002] It is pointed out in the related art that the problems of low material utilization and high production cost are particularly prominent in the battery manufacturing industry, which is mainly due to the following reasons:

[0003] 1. Outdated technology and processes: If the production process is outdated or not sophisticated enough, it may cause a large amount of waste during the processing of raw materials, thereby reducing material utilization.

[0004] 2. Insufficient equipment precision: The precision and efficiency of production equipment directly affect the use of materials. Low equipment precision may lead to increased losses during product processing, indirectly increasing production costs.

[0005] 3. Unreasonable design: If the product structure design does not fully consider the material utilization efficiency and production cost, it is easy to lead to low material utilization in subsequent production. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a cover plate assembly that can reduce production costs.

[0007] The utility model also provides a battery cell having the cover plate assembly.

[0008] According to the first aspect of the present invention, the cover assembly includes: a cover body, which is formed with a mounting hole; a pole, which includes a connected column and a connecting plate, the column is arranged in the mounting hole, and the connecting plate is arranged on the side of the cover body facing the battery cell.

[0009] According to the cover plate assembly of the present invention, by designing a split pole, while ensuring the flow capacity, the consumption of raw materials is reduced, the cost required to purchase raw materials is reduced, and production efficiency is improved. The overall structure is simple, easy to assemble, and the assembly difficulty is reduced.

[0010] In some embodiments, a mating hole is formed on the connecting plate, a mating protrusion is formed at one end of the column, a limiting portion is formed in the circumference of the mating protrusion, the mating protrusion is arranged in the mating hole, and the mating hole is adapted to the shape of the mating protrusion.

[0011] In some embodiments, a mating groove is formed on the connecting plate, the mating hole is formed on the bottom wall of the mating groove, the column is formed with a mating plate, the mating plate is arranged in the mating groove, and the mating plate is adapted to the shape of the mating groove.

[0012] In some embodiments, the connecting plate is connected to the pole by welding.

[0013] In some embodiments, the thickness of the connecting plate is 1 mm-3 mm, and the ratio of the thickness of the mating protrusion to the thickness of the connecting plate is between 0.4 and 0.6.

[0014] In some embodiments, a limiting groove is formed on the circumference of the mating hole, the limiting portion is adapted to the shape of the limiting groove, the length of the limiting groove is not less than 0.5 mm, and the width of the limiting groove is not less than 0.5 mm.

[0015] In some embodiments, the cover plate assembly further includes: a connecting block, wherein the connecting block is riveted to the column.

[0016] In some embodiments, the cover assembly further includes: an upper plastic part and a lower plastic part, wherein the upper plastic part is disposed between the connecting block and the cover body, and the lower plastic part is disposed between the connecting plate and the cover body.

[0017] In some embodiments, the cover assembly further includes: a sealing member, wherein the sealing member is sleeved between the column and the cover body.

[0018] A battery cell according to a second aspect of the present invention includes the cover plate assembly according to the first aspect of the present invention.

[0019] According to the battery cell of the present invention, by providing the cover plate assembly of the first aspect, the overall performance of the battery cell is improved, the production cost of the battery cell is reduced, and the production efficiency of the battery cell is improved.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a cover plate assembly according to an embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 A schematic front view of the cover assembly shown in FIG;

[0023] Figure 3 yes Figure 2 Schematic diagram of the section AA of the cover plate assembly shown in ;

[0024] Figure 4 yes Figure 3 The local enlarged schematic diagram shown in;

[0025] Figure 5 yes Figure 3 Schematic diagram of the pole shown in ;

[0026] Figure 6 yes Figure 5 A schematic diagram of another perspective of the pole shown in ;

[0027] Figure 7 yes Figure 5 Schematic diagram of the connecting plate shown in;

[0028] Figure 8 yes Figure 5 Schematic diagram of the cylinder shown in ;

[0029] Figure 9 yes Figure 7 A schematic diagram of another perspective of the connecting plate shown in FIG;

[0030] Figure 10 yes Figure 8 Schematic diagram of another perspective of the cylinder shown in .

[0031] Reference numerals:

[0032] 100. Cover plate assembly;

[0033] 1. Cover plate body;

[0034] 2. Pole;

[0035] 21. Column; 211. Matching plate; 212. Matching protrusion; 2121. Limiting portion;

[0036] 22. Connecting plate; 221. Matching groove; 222. Matching hole; 2221. Limiting groove;

[0037] 3. Connecting block; 4. Upper plastic part; 5. Lower plastic part; 6. Sealing part. DETAILED DESCRIPTION

[0038] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] Reference below Figures 1-10 The cover plate assembly 100 according to the first embodiment of the present invention is described.

[0040] like Figures 1-10 As shown, the cover plate assembly 100 according to the embodiment of the first aspect of the present utility model includes: a cover plate body 1 and a pole 2.

[0041] Specifically, a mounting hole is formed on the cover body 1, and the pole 2 includes a connected column 21 and a connecting plate 22. The column 21 is arranged in the mounting hole, and the connecting plate 22 is arranged on the side of the cover body 1 facing the battery cell. As a result, the cover assembly 100 has a simple structure and an ingenious design.

[0042] According to the cover plate assembly 100 of the embodiment of the present invention, by designing a split pole 2, while ensuring the flow capacity, the consumption of raw materials is reduced, the cost required to purchase raw materials is reduced, and production efficiency is improved. The overall structure is simple, easy to assemble, and the assembly difficulty is reduced.

[0043] Optionally, when the pole 2 is used for the negative electrode, it is made of copper; when the pole 2 is used for the positive electrode, it is made of aluminum; and the pole 2 can be formed into a cylindrical shape, an elliptical cylindrical shape, etc.

[0044] Since the column 21 and the connecting plate 22 are both designed as machined parts in the prior art, which results in low material utilization and high cost, in the embodiment of the present invention, the column 21 and the connecting plate 22 are machined parts, cold-headed parts, or stamped parts. In other words, the column 21 can be a machined part, a cold-headed part, or a stamped part, and the connecting plate 22 can be a machined part, a cold-headed part, or a stamped part.

[0045] In some embodiments of the present invention, Figures 4-10 As shown, a mating hole 222 is formed on the connecting plate 22, and a mating protrusion 212 is formed at one end of the column 21. A limiting portion 2121 is formed circumferentially around the mating protrusion 212. The mating protrusion 212 is disposed within the mating hole 222, and the mating hole 222 matches the shape of the mating protrusion 212. Thus, the mating protrusion 212 and the mating hole 222 cooperate to ensure a secure and accurate connection between the pole 2 and the connecting plate 22. The limiting portion 2121 further enhances the safety and stability of the structure, preventing the mating protrusion 212 from moving relative to the mating hole 222, thereby ensuring good and lasting contact between the pole 2.

[0046] In some embodiments of the present invention, Figures 4-10As shown, the connecting plate 22 is formed with a mating groove 221, and a mating hole 222 is formed in the bottom wall of the mating groove 221. The column 21 is formed with a mating plate 211, which is disposed within the mating groove 221. The mating plate 211 and the mating groove 221 are adapted in shape. Thus, the mating protrusion 212 is disposed within the mating hole 222, and the mating plate 211 is disposed within the mating groove 221. The combination of the mating plate 211 and the mating groove 221 increases the contact area, improves the overall strength of the structure, and facilitates the assembly and positioning of the column 21 and the connecting plate 22.

[0047] Furthermore, the connecting plate 22 is connected to the pole 2 by welding, and the connecting plate 22 and the pole 2 are formed into an integral structure by welding, thereby avoiding the problem of material waste caused by direct processing.

[0048] In some embodiments of the present invention, the thickness of the connecting plate 22 is 1 mm to 3 mm, and the ratio of the thickness of the mating plate 211 to the thickness of the connecting plate 22 is between 0.4 and 0.6. For example, the thickness of the connecting plate 22 can be 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2.0 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3.0 mm, etc.; the ratio of the thickness of the mating protrusion 212 to the thickness of the connecting plate 22 can be 0.4, 0.42, 0.44, 0.46, 0.48, 0.5, 0.52, 0.54, 0.56, 0.58, 0.6, etc.

[0049] In some embodiments of the present invention, a limiting groove 2221 is formed on the circumference of the mating hole 222, and the limiting portion 2121 is adapted to the shape of the limiting groove 2221. In this way, the torsional resistance of the pole 2 is increased after laser welding and fixation. The length of the limiting groove 2221 is not less than 0.5 mm, and the width of the limiting groove 2221 is not less than 0.5 mm.

[0050] In some embodiments of the present invention, the cover assembly 100 further includes a connecting block 3, which is riveted to the column 21. Thus, the riveted connection is simple and reliable, ensuring connection stability while reducing production costs.

[0051] In some embodiments of the present invention, Figure 4 As shown, the cover assembly 100 further includes an upper plastic part 4 and a lower plastic part 5. The upper plastic part 4 is disposed between the connecting block 3 and the cover body 1, and the lower plastic part 5 is disposed between the connecting plate 22 and the cover body 1. Thus, the cover assembly 100 has a simple structure and an ingenious design, ensuring the safety of the cover assembly 100.

[0052] Preferably, the upper plastic part 4 is made of PPS material, and the lower plastic part 5 is made of PP material.

[0053] In some embodiments of the present invention, Figure 4 As shown, the cover plate assembly 100 further includes a seal 6, which is sleeved between the column 21 and the cover plate body 1. This improves the sealing performance of the cover plate assembly 100 and prevents electrolyte leakage and external moisture and dust from entering the battery.

[0054] Preferably, the sealing member 6 is a fluororubber member.

[0055] The battery cell according to the second embodiment of the present invention includes the cap plate assembly 100 according to the first embodiment of the present invention.

[0056] According to the battery cell of the embodiment of the present invention, by providing the cover plate assembly 100 of the first embodiment, the overall performance of the battery cell is improved, the production cost of the battery cell is reduced, and the production efficiency of the battery cell is improved.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0059] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0061] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cover plate assembly, characterized in that: include: a cover plate body, wherein a mounting hole is formed on the cover plate body; The pole comprises a connected column and a connecting plate, the column is arranged in the mounting hole, and the connecting plate is arranged on the side of the cover body facing the battery core.

2. The cover plate assembly according to claim 1, wherein: A matching hole is formed on the connecting plate, a matching protrusion is formed at one end of the column, a limiting portion is formed in the circumference of the matching protrusion, the matching protrusion is arranged in the matching hole, and the matching hole is adapted to the shape of the matching protrusion.

3. The cover plate assembly according to claim 2, wherein: A matching groove is formed on the connecting plate, the matching hole is formed on the bottom wall of the matching groove, and a matching plate is formed on the column. The matching plate is arranged in the matching groove, and the shape of the matching plate is adapted to that of the matching groove.

4. The cover plate assembly according to claim 3, wherein: The connecting plate is connected to the pole by welding.

5. The cover plate assembly according to claim 4, wherein: The thickness of the connecting plate is 1 mm to 3 mm, and the ratio of the thickness of the matching protrusion to the thickness of the connecting plate is between 0.4 and 0.

6.

6. The cover plate assembly according to claim 5, wherein: A limiting groove is formed on the circumference of the matching hole, the limiting portion is adapted to the shape of the limiting groove, the length of the limiting groove is not less than 0.5 mm, and the width of the limiting groove is not less than 0.5 mm.

7. The cover plate assembly according to any one of claims 1 to 6, characterized in that: Also includes: A connecting block is riveted to the column.

8. The cover plate assembly according to claim 7, wherein: Also includes: An upper plastic part and a lower plastic part, wherein the upper plastic part is arranged between the connecting block and the cover body, and the lower plastic part is arranged between the connecting plate and the cover body.

9. The cover plate assembly according to any one of claims 1 to 6, characterized in that: Also includes: A sealing member is sleeved between the column and the cover body.

10. A battery cell, characterized in that: The invention comprises the cover plate assembly according to any one of claims 1 to 9.

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