High-performance lithium battery positive current collector

Abstract

The utility model provides a high-performance lithium battery anode current collector, which comprises a first connecting part and a second connecting part, and further comprises a positioning structure arranged on the first connecting part or the second connecting part, and an electrolyte passing structure is arranged on the first connecting part or the second connecting part. The over-electrolyte structure comprises a first over-electrolyte structure arranged on the first connecting part or the second connecting part and a second over-electrolyte structure arranged on the first connecting part or the second connecting part. The high-performance lithium battery positive current collector and the production method thereof provided by the utility model have the advantages that the heat dissipation efficiency is high, the fixation is convenient, the safety and the stability of the battery are effectively improved, and the like. The high-performance lithium battery positive current collector has great economic value and practical value.

Description

Technical Field

[0001] This utility model relates to the field of battery production, research and development, and design technology, and in particular to a high-performance lithium battery positive electrode current collector. Background Technology

[0002] The positive current collector in a battery plays a crucial role in collecting and transmitting current, serving as a key component connecting the battery's positive terminal to the external circuitry. The design and material selection of the positive current collector significantly impact battery performance, including capacity, internal resistance, and safety. With technological advancements, lithium batteries are continuously being improved, achieving substantial advancements in safety, fast charging, high rate capability, and high cycle life. Consequently, the design of the positive current collector is also constantly evolving, with researchers focusing on accelerating heat dissipation and enhancing battery safety and stability to improve overall performance and safety. Utility Model Content

[0003] This invention addresses the shortcomings of the prior art by providing a lithium battery positive electrode current collector structure that offers high heat dissipation efficiency, ease of fixation, and effective improvement in battery safety and stability.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows:

[0005] This utility model provides a high-performance lithium battery positive electrode current collector, including a first connecting part and a second connecting part, and a positioning structure disposed on the first connecting part or the second connecting part.

[0006] Furthermore, the first or second connecting part is provided with an electrolyte structure.

[0007] Furthermore, the electrolyte structure includes a first electrolyte structure disposed on the first connection portion or the second connection portion, and a second electrolyte structure disposed on the first connection portion or the second connection portion.

[0008] Furthermore, the first or second connecting portion is provided with a reinforcing structure.

[0009] Furthermore, the reinforcing structure includes reinforcing structure A and reinforcing structure B, which are used to position and increase the current overcurrent cross-sectional area, increase the heat dissipation area, and improve heat dissipation efficiency.

[0010] Furthermore, the reinforcing structure A and the reinforcing structure B are in the form of elongated grooves.

[0011] Furthermore, the first or second connecting part is also provided with a punching structure to increase structural strength and welding firmness.

[0012] Furthermore, the crater structure includes a first crater structure and a second crater structure, the first crater structure and the second crater structure having the same or different shapes.

[0013] Furthermore, the first crater structure includes a bottom and sequentially connected first crater side bodies A, B, C, and D, wherein the first crater side body C has an inwardly concave shape.

[0014] The second crater structure includes a bottom of the second crater structure and second crater side body A, second crater side body B, second crater side body C and second crater side body D connected in sequence. The second crater structure is trapezoidal in shape.

[0015] The beneficial effects of this utility model are as follows:

[0016] The high-performance lithium battery positive electrode current collector provided by this utility model has the advantages of high heat dissipation efficiency, easy fixation, and effective improvement of battery safety and stability. In this application, the reinforced structure is used for positioning and increasing the current-carrying cross-sectional area, increasing the heat dissipation area, improving heat dissipation efficiency, and also increasing the current-carrying area. The internal resistance is low, which can realize high current charging and discharging, greatly extending the battery's service life. At the same time, the design of the dented structure is used to increase structural strength and welding firmness. The unique design of this application effectively improves the overall performance of the lithium battery. This application has great economic and practical value. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a high-performance lithium battery positive electrode current collector according to the present invention;

[0018] Figure 2 This is a structural diagram of another type of positive electrode current collector for a lithium battery according to this utility model;

[0019] Figure 3 This is a cross-sectional view of the first dent structure of the positive electrode current collector of a high-performance lithium battery according to this utility model;

[0020] Figure 4 This is a top structural diagram of the second crater structure of a high-performance lithium battery positive electrode current collector according to this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of a high-performance lithium battery positive electrode current collector in use according to this utility model;

[0022] Figure 6 This is a schematic diagram of another use of a high-performance lithium battery positive electrode current collector according to this utility model. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of this utility model.

[0024] like Figure 1-4 As shown, this embodiment provides a high-performance lithium battery positive electrode current collector, including a first connecting part 1 and a second connecting part 2, and also includes a positioning structure 3 disposed on the first connecting part 1 or the second connecting part 2. In this embodiment, the positioning structure 3 is disposed on the first connecting part 1 and is an oblique structure, but it can also be designed into other shapes such as a semicircle or a polygon as needed.

[0025] In this embodiment, the first connecting part 1 or the second connecting part 2 is provided with an electrolyte structure 5.

[0026] In this embodiment, the electrolyte structure 5 includes a first electrolyte structure 51 disposed on the first connecting portion 1 or the second connecting portion 2, and a second electrolyte structure 52 disposed on the first connecting portion 1 or the second connecting portion 2. In this embodiment, the first electrolyte structure 51 on the first connecting portion 1 and the second connecting portion 2 is a circular through hole, and the second electrolyte structure 52 disposed on the second connecting portion 2 is a teardrop-shaped through hole.

[0027] In this embodiment, the first connecting part 1 or the second connecting part 2 is provided with a reinforcing structure 6.

[0028] In this embodiment, the reinforcing structure 6 includes reinforcing structure A61 and reinforcing structure B62. The reinforcing structure 6 is used to position and increase the current overcurrent cross-sectional area, increase the heat dissipation area, and improve heat dissipation efficiency.

[0029] In this embodiment, the reinforcing structure A61 and the reinforcing structure B62 are in the form of long strip grooves.

[0030] In this embodiment, the first connecting part 1 or the second connecting part 2 is further provided with a punching structure 7 to increase structural strength and welding firmness.

[0031] In this embodiment, the crater structure 7 includes a first crater structure 8 and a second crater structure 9, wherein the first crater structure 8 and the second crater structure 9 may have the same or different shapes.

[0032] In this embodiment, the first crater structure 8 includes a bottom 81 and sequentially connected first crater side bodies A82, B83, C84, and D85. The first crater side body C84 has an inwardly concave shape.

[0033] The second crater structure 9 includes a bottom 91 and sequentially connected second crater side bodies A92, B93, C94, and D95. The second crater structure 9 is trapezoidal in shape.

[0034] like Figure 5-6 As shown, in use, the first connecting part 1 is bent to connect the lithium battery cell, and the second connecting part 2 connects to the negative electrode of the battery. The high-performance lithium battery positive electrode current collector provided by this utility model has advantages such as high heat dissipation efficiency, easy fixation, and effective improvement of battery safety and stability. In this application, a reinforced structure is used for positioning and increasing the current-carrying cross-sectional area, increasing the heat dissipation area, and improving heat dissipation efficiency. At the same time, the design of the dented structure is used to increase structural strength and welding firmness. The unique design of this application effectively improves the overall performance of the lithium battery. This application has great economic and practical value.

[0035] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1.A high-performance lithium battery positive electrode tab, characterized in that: it comprises a first connecting part and a second connecting part, and further comprises a positioning structure arranged on the first connecting part or the second connecting part, an over-liquid structure is arranged on the first connecting part or the second connecting part, the over-liquid structure comprises a first over-liquid structure arranged on the first connecting part or the second connecting part, and a second over-liquid structure arranged on the first connecting part or the second connecting part, a reinforcing structure is arranged on the first connecting part or the second connecting part. 2.The high-performance lithium battery positive electrode tab according to claim 1, characterized in that: the reinforcing structure comprises a reinforcing structure A and a reinforcing structure B, and the reinforcing structure is used for positioning and increasing the current over-flow cross-sectional area, increasing the heat dissipation area, and improving the heat dissipation efficiency. 3.The high-performance lithium battery positive electrode tab according to claim 2, characterized in that: the reinforcing structure A and the reinforcing structure B are in the shape of long strip-shaped grooves. 4.The high-performance lithium battery positive electrode tab according to claim 2, characterized in that: a pit structure is further arranged on the first connecting part or the second connecting part, and is used for increasing the structural strength and the welding firmness. 5.The high-performance lithium battery positive electrode tab according to claim 4, characterized in that: the pit structure comprises a first pit structure and a second pit structure, and the first pit structure and the second pit structure are the same or different in shape. 6.The high-performance lithium battery positive electrode tab according to claim 5, characterized in that: the first pit structure comprises a first pit structure bottom and a first pit edge body A, a first pit edge body B, a first pit edge body C and a first pit edge body D connected in sequence, and the first pit edge body C is in the shape of inwardly recessed, the second pit structure comprises a second pit structure bottom and a second pit edge body A, a second pit edge body B, a second pit edge body C and a second pit edge body D connected in sequence, and the second pit structure is in the shape of a trapezoid.

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