Collector plate structure and battery
By setting the outer convex hull in the disk body of the current collecting disk structure and setting the separation interval, the problem of easy metal wire generation during the molding process is solved, the performance of the current collecting disk structure is improved and the mold structure is simplified.
Patent Information
- Application Number
- CN202421073311.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-16
AI Technical Summary
In the prior art, metal wires are easily generated during the cutting edge current collecting disk structure using a mold, which affects the performance of the current collecting disk structure.
By setting an outer convex hull in the disc body of the current collecting disk structure and setting a separation distance between the outer edge of the outer convex hull and the outer circumference of the disc body, the outer convex hull is prevented from intersecting with the outer circumference of the disc body, thereby avoiding the generation of metal wires during the molding process.
It effectively avoids the generation of metal wires during the edge cutting process of the current collecting disk structure, improves the performance of the current collecting disk structure, simplifies the mold structure, and improves the mold maintenance efficiency.
Smart Images
Figure CN222654273U_ABST
Abstract
Description
Technical Field
[0001] The utility model patent relates to the technical field of batteries, and specifically, to a current collecting disc structure and a battery. Background Art
[0002] The collector plate structure is an important component of the battery, which is used to connect with the poles and the lugs of the battery cells.
[0003] In the prior art, the current collecting disc structure includes a connecting portion and a disc body. The disc body is provided with a groove to form a protruding structure for connecting with the pole. The connecting portion can be bent to connect with the pole ear of the battery cell.
[0004] However, the grooves are arranged to penetrate the periphery of the disc body. Thus, when the trimmed collector disc structure is formed by a mold, metal wires are easily generated due to the step difference formed on the periphery of the disc body, which affects the performance of the collector disc structure. Utility Model Content
[0005] The utility model aims to provide a current collecting plate structure, aiming to solve the problem in the prior art that metal wires are easily generated during the process of using a mold to form the trimming current collecting plate structure.
[0006] The utility model is implemented in this way: a current collecting disc structure comprises a disc body and a connecting portion for connecting with a pole ear of a battery cell; the disc body has an outer convex package arranged with protrusions and used for connecting with a pole; and a separation interval is provided between the outer edge of the outer convex package and the outer periphery of the disc body.
[0007] Furthermore, the separation interval is not less than 0.01 mm.
[0008] Furthermore, a concave groove is formed on one side of the disk body away from the outer convex package, and the outer convex package and the concave groove are arranged correspondingly.
[0009] Furthermore, the disc body is provided with a plurality of weight-reducing holes, and the plurality of weight-reducing hole rings are arranged on the peripheral side of the outer convex bag.
[0010] Furthermore, the outer convex bulge includes an annular portion forming the middle of the disk body, the annular portion is arranged in a closed loop, and the outer periphery of the annular portion is spaced apart from the outer periphery of the disk body.
[0011] Furthermore, the outer convex bump includes a plurality of straight strips, the inner ends of the straight strips are butted against the outer circumference of the annular portion, the outer ends of the straight strips extend outward away from the annular portion, and the separation interval is formed between the outer ends of the straight strips and the outer circumference of the disk body.
[0012] Furthermore, a positioning hole is formed in the middle of the disc body, and the annular portion surrounds the outer circumference of the positioning hole.
[0013] Furthermore, the middle part of the disk body has an inner convex hull with a convex arrangement, the inner convex hull and the outer convex hull are convexly arranged in the opposite direction, the annular portion surrounds the outer circumference of the inner convex hull, and the inner convex hull surrounds the outer circumference of the positioning hole.
[0014] Furthermore, the connecting portion can be bent along the length direction, the connecting portion has at least one bending position for bending, and at least one hollow position is provided at the bending position; the thickness of the connecting portion is not less than 0.05 mm.
[0015] Compared with the prior art, the collecting plate structure provided by the utility model has a separation gap between the outer edge of the outer convex bump and the outer periphery of the plate body, and will not intersect with the outer periphery of the plate body. The outer periphery of the plate body is formed on the same plane without any step difference. In the process of using a mold to form the trimming collecting plate structure, metal wire is avoided from being generated on the outer periphery of the plate body, thereby improving the performance of the collecting plate structure, simplifying the mold structure, and improving the efficiency of mold maintenance.
[0016] The utility model also provides a battery, comprising the above-mentioned current collecting plate structure.
[0017] The battery provided by the utility model has a current collecting plate structure which is provided with an outer convex bump to avoid the formation of a step difference on the outer periphery of the plate body, and avoids the appearance of metal wires when trimming the current collecting plate structure, thereby greatly improving the quality and manufacturing efficiency of the battery;
[0018] Secondly, the outer bulge can improve the overall strength of the disk body. At the same time, compared with the direct contact between the pole and the large surface of the disk body, it is only necessary to ensure the flatness of the end face of the outer bulge, and the overall flatness of the disk body is not required, which simplifies the structure and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a three-dimensional schematic diagram of the collecting plate structure provided by the utility model;
[0020] Figure 2 It is a three-dimensional schematic diagram of the collecting plate structure provided by the utility model;
[0021] In the figure: a disk body 100, a circular ring portion 101, a straight portion 102, a separation interval 103; a connecting portion 200, a hollow position 201, a bending position 202; a weight-reducing hole 300; a positioning hole 400; and an inner convex bulge 500. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0023] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0024] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0025] Reference Figure 1-2 As shown, it is a preferred embodiment provided by the utility model.
[0026] The current collecting disc structure includes a disc body 100 and a connecting portion 200. The disc body 100 can have various shapes, such as a disc shape, and the connecting portion 200 can be bent, and can be bent in multiple sections and connected to the pole lug of the battery cell. The disc body 100 has a convex outer bulge, which can be connected to the pole, and a separation interval 103 is provided between the outer edge of the outer bulge and the outer periphery of the disc body 100, and the separation interval 103 can be determined according to specific needs.
[0027] The collecting plate structure provided above has a separation gap 103 between the outer edge of the outer bulge and the outer periphery of the plate body 100, and will not intersect with the outer periphery of the plate body 100. The outer periphery of the plate body 100 is formed on the same plane without any step difference. In the process of using a mold to form the trimming collecting plate structure, metal wires are avoided from being generated on the outer periphery of the plate body 100, thereby improving the performance of the collecting plate structure, simplifying the mold structure, and improving the efficiency of mold maintenance.
[0028] The disk body 100 has a raised outer bulge, which firstly can improve the overall strength of the disk body 100; secondly, compared with the direct contact between the pole and the large surface of the disk body 100, it is only necessary to ensure the flatness of the end face of the outer bulge, and the overall flatness of the disk body 100 is not required, which simplifies the structure and reduces costs.
[0029] In some embodiments, the separation interval 103 is not less than 0.01 mm, so as to prevent the outer edge of the outer convex hull from being too close to the outer periphery of the disk body 100, and further prevent the appearance of metal wires.
[0030] In some embodiments, the thickness of the connecting portion 200 is not less than 0.05 mm to prevent the connecting portion 200 from being deformed due to non-bending during the bending process.
[0031] An open recessed groove is formed on one side of the disk body 100 away from the outer convex bump. The protruding direction of the outer convex bump is opposite to the opening direction of the recessed groove, that is, the outer convex bump and the recessed groove are arranged correspondingly, so that it is convenient to stamp the outer convex bump on the disk body 100.
[0032] The disc body 100 is provided with a plurality of weight-reducing holes 300, which are arranged on the peripheral side of the outer convex bulge, that is, arranged at intervals around the middle of the disc body 100. By arranging the weight-reducing holes 300, the weight of the disc body 100 can be reduced and the air permeable area can be increased.
[0033] In some embodiments, the outer convex hull includes an annular portion 101 forming the middle of the disk body 100, the annular portion 101 is arranged in a closed loop, and the outer periphery of the annular portion 101 is arranged at intervals from the outer periphery of the disk body 100. The annular portion 101 is arranged in a surrounding shape, which facilitates the connection between the outer convex hull and the pole, and can maintain a multi-position connection between the outer convex hull and the pole in the circumferential direction.
[0034] The outer convex bump includes a plurality of straight strips 102 , the inner ends of the straight strips 102 are butted against the outer circumference of the annular portion 101 , and the outer ends of the straight strips 102 extend outward away from the annular portion 101 , forming the above-mentioned separation intervals 103 between the outer ends of the straight strips 102 and the outer circumference of the disk body 100 .
[0035] By providing the straight strip portion 102, the overall structure of the outer convex bulge and the disk body 100 can be made more stable, thereby ensuring the overall strength of the disk body 100. Secondly, the circumferential extension position of the outer convex bulge can be increased, thereby facilitating the abutment between the outer convex bulge and the pole.
[0036] The plurality of straight strip portions 102 are radially arranged with the annular portion 101 as the center, and the outer convex hull is connected to the pole at multiple positions within the radial range.
[0037] In some embodiments, a positioning hole 400 is formed in the middle of the disk body 100, and the annular portion 101 surrounds the outer circumference of the positioning hole 400. By arranging the positioning hole 400, it is convenient to position the outer convex package during the manufacturing process and to position the outer convex package when connecting with the pole.
[0038] In some embodiments, the middle portion of the disk body 100 has an inner convex hump 500 arranged in a convex manner, the inner convex hump 500 is arranged in a convex manner opposite to the outer convex hump, the annular portion 101 surrounds the outer circumference of the inner convex hump 500, and the inner convex hump 500 surrounds the outer circumference of the positioning hole 400.
[0039] By forming an inner convex hump 500 in the middle of the disc body 100, and the protruding direction of the inner convex hump 500 is opposite to the protruding direction of the outer convex hump, the structure of the outer convex hump can be kept stable and the stamping forming of the outer convex hump is facilitated.
[0040] In some embodiments, along the length direction of the connecting portion 200, the connecting portion 200 has at least one bending position 202 for bending, and the connecting portion 200 can be bent along its length direction. At least one hollow position 201 is provided on the bending position 202. When the connecting portion 200 is connected to the tab of the battery cell, the connecting portion 200 is bent along the bending position 202. By arranging the hollow position 201, the bending and forming of the connecting portion 200 can be facilitated.
[0041] This embodiment also provides a battery, which includes the above-mentioned current collecting plate structure. By providing an external convex bump, the formation of a step difference on the periphery of the plate body 100 is avoided. When trimming the current collecting plate structure, the appearance of metal wires is avoided, which greatly improves the quality and manufacturing efficiency of the battery.
[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. The collecting plate structure is characterized by: The invention comprises a disk body (100) and a connection portion (200) for connecting to a pole lug of a battery cell, wherein the disk body (100) has an outer convex package arranged with protrusions and for connecting to a pole, and a separation interval (103) is provided between the outer edge of the outer convex package and the outer periphery of the disk body (100).
2. The current collecting plate structure according to claim 1, characterized in that: The separation interval (103) is not less than 0.01 mm.
3. The current collecting plate structure according to claim 1, characterized in that: A concave groove is formed on one side of the disk body (100) away from the outer convex bump, and the outer convex bump and the concave groove are arranged correspondingly.
4. The current collecting plate structure according to claim 1, characterized in that: The disk body (100) is provided with a plurality of weight-reducing holes (300), and the plurality of weight-reducing holes (300) are arranged around the circumference of the outer convex package.
5. The current collecting plate structure according to any one of claims 1 to 4, characterized in that: The outer convex bulge comprises an annular portion (101) forming the middle portion of the disk body (100), the annular portion (101) is arranged in a closed loop, and the outer periphery of the annular portion (101) is spaced apart from the outer periphery of the disk body (100).
6. The current collecting plate structure according to claim 5, characterized in that: The outer convex bulge comprises a plurality of straight strips, the inner ends of the straight strips are butted against the outer circumference of the annular portion (101), the outer ends of the straight strips extend outward away from the annular portion (101), and the separation gap (103) is formed between the outer ends of the straight strips and the outer circumference of the disk body (100).
7. The current collecting plate structure according to claim 6, characterized in that: A positioning hole (400) is formed in the middle of the disk body (100), and the annular portion (101) surrounds the outer circumference of the positioning hole (400).
8. The current collecting plate structure according to claim 5, characterized in that: The middle part of the disk body (100) has an inner convex hump (500) arranged in a convex manner, the inner convex hump (500) is arranged in a convex manner opposite to the outer convex hump, the annular portion (101) surrounds the outer circumference of the inner convex hump (500), and the inner convex hump (500) surrounds the outer circumference of the positioning hole (400).
9. The current collecting plate structure according to any one of claims 1 to 4, characterized in that: The connecting portion (200) can be bent along the length direction, the connecting portion (200) has at least one bending position (202) for bending, and at least one hollow position (201) is provided at the bending position (202); the thickness of the connecting portion is not less than 0.05 mm.
10. A battery, characterized in that The collecting plate structure comprises the current collecting plate structure as claimed in any one of claims 1 to 9.