Molded nickel sheet

Abstract

The utility model aims to provide a forming nickel sheet which comprises a sheet body and a buffering part, the sheet body is provided with a first side face and a second side face which are opposite to each other, the buffering part comprises a circular groove and an annular groove, the circular groove is formed in the first side face, the annular groove is formed in the second side face, the axis of the circular groove coincides with the axis of the annular groove, and the diameter of the annular groove is larger than that of the circular groove. The annular groove is embedded outside the circular groove, so that an S-shaped bent structure is formed between the inner side wall of the annular groove and the outer side wall of the circular groove, and one end of the S-shaped bent structure in the axis direction is connected with any electrode of the battery, so that the S-shaped bent structure elastically deforms to absorb acting force. Therefore, the influence of acting force in the axis direction of the battery on a welding point is effectively relieved while the conductivity is ensured, so that the reliability and safety of the battery pack are improved, and the service life of the battery pack is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of metal processing, and in particular to a shaped nickel sheet. Background Technology

[0002] In battery packs, molded nickel sheets serve as crucial conductive connectors, typically fixed to the battery electrodes via welding to achieve electrical connections between cells. The quality of these connections directly impacts the battery pack's conductivity, stability, and safety.

[0003] However, existing molded nickel sheets have the following shortcomings in practical applications: In dynamic battery applications (such as electric remote-controlled toys, portable electronic devices, etc.), when the battery is subjected to axial forces, the welding points between the sheet and the battery electrodes will bear additional forces. This force can easily cause the welding points to loosen or even tear, leading to problems such as poor battery contact, increased resistance, overheating, or even power failure. This not only affects the performance and reliability of the battery pack but may also pose safety hazards. In view of this, the molded nickel sheet of this application is proposed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a molded nickel sheet that can effectively mitigate the influence of the axial force of the battery on the welding point while ensuring conductivity, thereby improving the reliability, safety and service life of the battery pack.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A molded nickel sheet includes a sheet body and a buffer portion. The sheet body has a first side surface and a second side surface opposite to each other. The buffer portion includes a circular groove and an annular groove. The circular groove is formed on the first side surface, and the annular groove is formed on the second side surface. The axis of the circular groove coincides with the axis of the annular groove. The diameter of the annular groove is larger than the diameter of the circular groove, and the annular groove is nested outside the circular groove, such that the inner sidewall of the annular groove and the outer sidewall of the circular groove together form an S-shaped bending structure. One end of the S-shaped bending structure in the axial direction is connected to any electrode of a battery, so that the S-shaped bending structure can elastically deform to absorb the force.

[0007] Optionally, the circular groove is recessed from the first side to the second side along the direction of the axis, and the outer bottom surface of the circular groove protrudes from the second side. The annular groove is opened around the axis of the circular groove along the circumference of the circular groove, the annular groove is recessed from the second side to the first side, and the outer bottom surface of the annular groove protrudes from the first side.

[0008] Optionally, the two inner sidewalls of the annular groove facing each other are respectively connected to the outer bottom surface of the sheet and the circular groove, and the inner sidewall of the circular groove is connected to the outer bottom surface of the annular groove.

[0009] Optionally, a plurality of diversion grooves are formed on the inner bottom wall of the circular groove, and one end of each diversion groove extends toward the inner side wall of the circular groove with the axis of the circular groove as the center. Each diversion groove divides the inner bottom wall of the circular groove into a plurality of connecting pieces, which are used to connect with the battery electrodes.

[0010] Optionally, the inner bottom wall of the circular groove is further provided with a central hole, which extends through the first side and the second side with the axis of the circular groove as the center, and one end of each of the diversion grooves is connected to the central hole.

[0011] Optionally, the sheet body is further provided with a plurality of stress holes, each stress hole being equidistantly distributed along the circumference of the annular groove, and each stress hole penetrating the annular groove and the circular groove.

[0012] Optionally, one of the stress holes is located between the included angles of two adjacent diversion channels.

[0013] Compared with the prior art, the present invention has at least the following advantages:

[0014] The molded nickel sheet of this invention has a circular groove and an annular groove respectively opened on two opposing sides, and the axes of the circular groove and the annular groove coincide, so that the inner sidewall of the annular groove and the outer sidewall of the circular groove together form an S-shaped bending structure. When the battery is subjected to a force in the axial direction, it can use the elastic deformation of the S-shaped bending structure to absorb the force, effectively mitigating the impact of the axial force on the welding point, thereby improving the reliability, safety and service life of the battery pack. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a molded nickel sheet according to one embodiment of the present invention;

[0017] Figure 2 for Figure 1 A partial structural diagram of A in the middle;

[0018] Figure 3This is a partial cross-sectional structural diagram of a molded nickel sheet according to one embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Molded nickel sheet; 10. Sheet body; 11. First side surface; 12. Second side surface; 20. Circular groove; 30. Annular groove; 21. Diverting groove; 22. Center hole; 23. Connecting piece; 40. Stress hole; 41. Buffer piece. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0022] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model 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 utility model.

[0023] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0025] like Figures 1 to 3As shown, in one embodiment, a molded nickel sheet 1 has a sheet body 10 with a first side surface 11 and a second side surface 12 facing each other. The sheet body 10 has a circular groove 20 and an annular groove 30. The circular groove 20 is located on the first side surface 11, and the annular groove 30 is located on the second side surface 12. The axis of the circular groove 20 coincides with the axis of the annular groove 30. The diameter of the annular groove 30 is larger than the diameter of the circular groove 20, and the annular groove 30 is nested outside the circular groove 20, so that the inner sidewall of the annular groove 30 and the outer sidewall of the circular groove 20 together form an S-shaped bending structure. One end of the S-shaped bending structure in the axial direction is connected to any electrode of the battery, so that the S-shaped bending structure can elastically deform to absorb the force.

[0026] It should be noted that the circular groove 20 is recessed from the first side 11 to the second side 12 along the axial direction, and the outer bottom surface of the circular groove 20 protrudes from the second side 12. The annular groove 30 is formed around the axial center of the circular groove 20 along its circumference, recessed from the second side 12 to the first side 11, and the outer bottom surface of the annular groove 30 protrudes from the first side 11. This allows the annular groove 30 to nest on the outside of the circular groove 20. Furthermore, the two opposing inner sidewalls of the annular groove 30 are respectively connected to the sheet body 10 and the outer bottom surface of the circular groove 20, and the inner sidewall of the circular groove 20 is connected to the outer bottom surface of the annular groove 30. In this way, the inner sidewall of the annular groove 30 and the outer sidewall of the circular groove 20 together form an S-shaped curved structure. Furthermore, one end of the S-shaped bending structure along its axis is connected to any one of the battery's electrodes. For example, the S-shaped bending structure can be welded to the battery's electrode. When the battery is subjected to a force along its axis, the S-shaped bending structure elastically deforms along the axis to absorb the force. This prevents the weld between the sheet 10 and the battery electrode from loosening or even tearing under stress, which could lead to poor battery contact, increased resistance, overheating, or even power failure. This not only affects the battery pack's performance and reliability but may also pose safety hazards.

[0027] like Figures 1 to 3 As shown, in one embodiment, a plurality of diversion grooves 21 are provided on the inner bottom wall of the circular groove 20. One end of each diversion groove 21 extends toward the inner side wall of the circular groove 20 with the axis of the circular groove 20 as the center. Each diversion groove 21 divides the inner bottom wall of the circular groove 20 into a plurality of connecting pieces 23, which are used to connect with the battery electrodes.

[0028] It should be noted that a central hole 22 is also provided on the inner bottom wall of the circular groove 20. The central hole 22 passes through the first side surface 11 and the second side surface 12 with the axis of the circular groove 20 as the center. One end of each diversion groove 21 is connected to the central hole 22. Furthermore, a number of diversion grooves 21 are provided on the inner side wall of the circular groove 20. One end of each diversion groove 21 is connected to the central hole 22, and the other end of each diversion groove 21 extends outward from the central hole 22 to the inner side wall of the circular groove 20, and the diversion grooves 21 are equidistantly distributed. Furthermore, each diversion groove 21 passes through the first side surface 11 and the second side surface 12, so that each diversion groove 21 divides the inner bottom wall of the circular groove 20 into a number of connecting pieces 23. Furthermore, each connecting piece 23 together drives the piece body 10 to connect with the battery electrode. This allows the heat during welding to be dispersed and transferred through multiple connecting pieces 23, avoiding the accumulation of heat in a single area and the phenomenon of weld explosion, thereby improving the welding quality.

[0029] like Figures 1 to 3 As shown, in one embodiment, the sheet body 10 is further provided with a plurality of stress holes 40, each stress hole 40 being equidistantly distributed along the circumference of the annular groove 30, and each stress hole 40 penetrating the annular groove 30 and the circular groove 20.

[0030] It should be noted that each stress hole 40 is equidistantly distributed along the circumference of the annular groove 30, with the axis of the annular groove 30 as the center. Each stress hole 40 penetrates both ends of the annular groove 30 and the circular groove 20 along the axial direction. One end of each stress hole 40 is located inside the circular groove 20, while the other end extends outward from the axis of the circular groove 20 to the position of the plate body 10. Thus, since each stress hole 40 penetrates both the annular groove 30 and the circular groove 20, when each stress hole 40 extends outward from the axis of the circular groove 20, it divides the S-shaped curved structure formed by the inner wall of the annular groove 30 and the outer wall of the circular groove 20 into several buffer plates 41 of equal arc length. Furthermore, one end of each buffer plate 41 is connected to the plate body 10, and the other ends of each buffer plate 41 are interconnected to form the inner bottom wall of the circular groove 20. It should be noted that a stress hole 40 is located between the included angles of two adjacent flow channels 21, such that the ends of any two adjacent buffer plates 41 connected together form a connecting piece 23. This improves the elasticity of the S-shaped bending structure.

[0031] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A molded nickel sheet, characterized in that, include: A sheet body having a first side surface and a second side surface opposite to each other; and The buffer section includes a circular groove and an annular groove. The circular groove is formed on the first side surface, and the annular groove is formed on the second side surface. The axis of the circular groove coincides with the axis of the annular groove. The diameter of the annular groove is larger than the diameter of the circular groove, and the annular groove is nested outside the circular groove, so that the inner sidewall of the annular groove and the outer sidewall of the circular groove together form an S-shaped bending structure. One end of the S-shaped bending structure in the axial direction is connected to any electrode of the battery, so that the S-shaped bending structure can elastically deform to absorb the force.

2. The molded nickel sheet according to claim 1, characterized in that, The circular groove is recessed from the first side to the second side along the direction of the axis, and the outer bottom surface of the circular groove protrudes from the second side. The annular groove is opened around the axis of the circular groove along the circumference of the circular groove. The annular groove is recessed from the second side to the first side, and the outer bottom surface of the annular groove protrudes from the first side.

3. The molded nickel sheet according to claim 2, characterized in that, The two inner sidewalls of the annular groove facing each other are respectively connected to the outer bottom surface of the sheet and the circular groove, and the inner sidewall of the circular groove is connected to the outer bottom surface of the annular groove.

4. The molded nickel sheet according to claim 3, characterized in that, The inner bottom wall of the circular groove is provided with a plurality of diversion grooves. One end of each diversion groove extends toward the inner side wall of the circular groove with the axis of the circular groove as the center. Each diversion groove divides the inner bottom wall of the circular groove into a plurality of connecting pieces, which are used to connect with the battery electrodes.

5. The molded nickel sheet according to claim 4, characterized in that, The inner bottom wall of the circular groove is also provided with a central hole, which extends through the first side and the second side with the axis of the circular groove as the center, and one end of each of the diversion grooves is connected to the central hole.

6. The molded nickel sheet according to claim 5, characterized in that, The sheet body is also provided with a number of stress holes, each stress hole is equidistantly distributed along the circumference of the annular groove, and each stress hole penetrates the annular groove and the circular groove.

7. The molded nickel sheet according to claim 6, characterized in that, One of the stress holes is located between the included angles of two adjacent flow dividers.

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