Nickel-plated copper positive electrode tab with high corrosion resistance

Abstract

The utility model relates to the technical field of positive electrode tabs, and provides a nickel-plated copper positive electrode tab with high corrosion resistance, which comprises a connecting sheet and a positive electrode tab, the protective structure is arranged, the first base layer and the second base layer are made of copper materials, the corrosion-resistant layer is made of nickel materials, and the first base layer is covered with the corrosion-resistant layer through electroplating, so that the corrosion resistance of the first base layer can be greatly improved, and the service life of the materials is prolonged; the lithium ion battery tab has excellent conductivity, can effectively reduce the impedance of the tab, improves the conductivity of the tab, and is beneficial to bearing large current, the thermal insulation layer is made of a graphite composite board material, can effectively isolate external heat, prevent the internal temperature of the battery from being too high, and avoid the risk of thermal runaway, and the waterproof layer is a film, so that short circuit is prevented; and excellent electrolyte resistance, corrosion resistance and stable conductivity are provided, smooth internal and external connection of the battery is ensured, and smooth flow of electric energy is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of positive pole lug, especially relates to a high corrosion -resistant nickel copper positive pole lug. BACKGROUND

[0002] The positive pole lug is an important component in the lithium ion battery, is responsible for connecting the positive pole from the electric core to the external circuit to carry out the charging and discharging process, and the high corrosion -resistant nickel copper positive pole lug is the key component for connecting the positive pole in the lithium ion battery to the external circuit, which provides superior corrosion resistance and good conductivity through nickel copper material.

[0003] The existing positive pole lug is not good in strength during use, so that the pole lug is prone to damage, and the pole lug is prone to corrosion after long-term use, so that it is inconvenient to have high corrosion resistance. UTILITY MODEL CONTENT

[0004] The utility model discloses a high corrosion -resistant nickel copper positive pole lug, to solve the defect that the existing positive pole lug is inconvenient to have high corrosion resistance.

[0005] In order to solve the above technical problem, the utility model provides the following technical scheme: a high corrosion -resistant nickel copper positive pole lug, including connecting piece and positive pole lug,

[0006] The connecting piece includes a positive pole lug, a positioning structure, a battery and a protection structure, the positive pole lug is fixed on both sides of the connecting piece, and the outer side of the connecting piece is provided with a positioning structure;

[0007] The bottom end of the connecting piece is connected with a battery;

[0008] The connecting piece is provided with a protection structure inside.

[0009] Preferably, the positive pole lug is provided with a plurality of groups, the positive pole lug is distributed at equal intervals on both sides of the connecting piece, the battery is provided with four groups, and the battery is distributed at equal intervals on the bottom end of the connecting piece.

[0010] Preferably, the positioning structure includes a first groove, a second groove and a welding hole, the first groove is arranged at the middle position on both sides of the connecting piece, the second groove is arranged at the middle position on both sides of the positive pole lug, and the welding hole is arranged in the positive pole lug.

[0011] Preferably, the first groove and the second groove are both provided with a "U" structure, the length of the first groove is greater than the length of the second groove, and the positive pole lug is fixedly connected with the battery through the welding hole.

[0012] Preferably, the protection structure comprises a first base layer, a corrosion-resistant layer, a reinforcing layer, a heat insulation layer, a waterproof layer and a second base layer, the first base layer is arranged inside the positive electrode tab, one side of the first base layer is fixed with the corrosion-resistant layer, one side of the corrosion-resistant layer is fixed with the reinforcing layer, the inside of the connecting piece is provided with the heat insulation layer, one side of the heat insulation layer is provided with the waterproof layer, and one side of the waterproof layer is provided with the second base layer.

[0013] Preferably, the first base layer and the second base layer are made of copper material, the corrosion-resistant layer is made of nickel material, and the reinforcing layer is a graphene coating.

[0014] Preferably, the heat insulation layer is made of a graphite composite plate material, and the waterproof layer is a film.

[0015] The positive electrode tab with high corrosion resistance provided by the utility model has the advantages that:

[0016] By setting the positioning structure, the positive electrode tab is arranged on both sides of the connecting piece through the first groove, so that the multiple groups of batteries can be conveniently connected and contacted, and the battery core can be conveniently positioned and the welding hole can be conveniently welded with the battery through the second groove;

[0017] By setting the protection structure, the first base layer and the second base layer are made of copper material, the corrosion-resistant layer is made of nickel material, the corrosion-resistant layer is covered on the first base layer through electroplating, the corrosion resistance of the first base layer can be greatly improved, the material service life can be improved, resource consumption can be reduced, production cost can be reduced, the reinforcing layer is a graphene coating, the conductivity is excellent, the impedance of the tab can be effectively reduced, the conductivity of the tab can be improved, large current can be conveniently carried, the heat insulation layer is made of a graphite composite plate material, external heat can be effectively isolated, the risk of thermal runaway can be avoided, the waterproof layer is a film, not only short circuit can be prevented, but also excellent electrolyte resistance, corrosion resistance and stable conductivity can be provided, the battery can be conveniently connected inside and outside, and smooth flow of electric energy can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0019] Figure 2 It is a top view structure schematic view of the utility model;

[0020] Figure 3 It is a Figure 2 It is an enlarged structure schematic view of A in the middle;

[0021] Figure 4 It is a positive electrode tab side view cross-sectional structure schematic view of the utility model;

[0022] Figure 5 It is the connecting piece side view section structure schematic diagram of the utility model.

[0023] The reference signs in the drawing are explained: 1, connecting piece; 101, positive pole lug; 102, positioning structure; 1021, first recess; 1022, second recess; 1023, welding hole; 103, battery; 104, protection structure; 1041, first base layer; 1042, corrosion-resistant layer; 1043, reinforcing layer; 1044, heat insulation layer; 1045, waterproof layer; 1046, second base layer. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] Please refer to Figures 1-5 The utility model provides a kind of high corrosion resistance's nickel-plated copper positive pole lug, including connecting piece 1 and positive pole lug 101.

[0026] Referring to Figures 1-3 As shown in the drawing, connecting piece 1 includes positive pole lug 101, positioning structure 102, battery 103 and protection structure 104, positive pole lug 101 is fixed on the both sides of connecting piece 1, the bottom end of connecting piece 1 is connected with battery 103, positive pole lug 101 is provided with several groups, positive pole lug 101 is equidistantly distributed on the both sides of connecting piece 1, battery 103 is provided with four groups, battery 103 is equidistantly distributed on the bottom end of connecting piece 1, the outside of connecting piece 1 is provided with positioning structure 102, positioning structure 102 includes first recess 1021, second recess 1022 and welding hole 1023, first recess 1021 is arranged at the intermediate position of the both sides of connecting piece 1, second recess 1022 is arranged at the intermediate position of the both sides of positive pole lug 101, welding hole 1023 is arranged in the inside of positive pole lug 101, first recess 1021 and second recess 1022 are both provided with the structure of "U", the length of first recess 1021 is greater than the length of second recess 1022, positive pole lug 101 is fixedly connected with battery 103 through welding hole 1023.

[0027] By setting first recess 1021, then positive pole lug 101 is arranged on the both sides of connecting piece 1, so that it is convenient to connect and contact multiple groups of batteries, by setting second recess 1022, so that it is convenient to position battery core, and it is convenient to weld welding hole 1023 with battery.

[0028] Referring to Figure 1 , Figure 4 and Figure 5 , the inside of the connecting piece 1 is provided with a protective structure 104, which includes a first base layer 1041, a corrosion-resistant layer 1042, a reinforcing layer 1043, a heat insulation layer 1044, a waterproof layer 1045, and a second base layer 1046. The first base layer 1041 is arranged inside the positive tab 101, one side of the first base layer 1041 is fixed with the corrosion-resistant layer 1042, one side of the corrosion-resistant layer 1042 is fixed with the reinforcing layer 1043, the inside of the connecting piece 1 is provided with the heat insulation layer 1044, one side of the heat insulation layer 1044 is provided with the waterproof layer 1045, one side of the waterproof layer 1045 is provided with the second base layer 1046, the first base layer 1041 and the second base layer 1046 are made of copper material, the corrosion-resistant layer 1042 is made of nickel material, the reinforcing layer 1043 is a graphene coating, the heat insulation layer 1044 is made of graphite composite board material, and the waterproof layer 1045 is a film.

[0029] The first base layer 1041 and the second base layer 1046 are made of copper material, and the corrosion-resistant layer 1042 is made of nickel material. By covering the corrosion-resistant layer 1042 on the first base layer 1041 through electroplating, the corrosion resistance of the first base layer 1041 can be greatly improved, and the first base layer 1041 also has the advantages of anti-oxidation, aesthetics, etc. The material service life can be improved, resource consumption can be reduced, production cost can be reduced, the reinforcing layer 1043 is a graphene coating, which has excellent electrical conductivity, can effectively reduce the impedance of the tab, improve the electrical conductivity of the tab, and is conducive to carrying large current, the heat insulation layer 1044 is made of graphite composite board material, which can effectively isolate external heat and prevent the internal temperature of the battery from being too high to avoid the risk of thermal runaway, and the waterproof layer 1045 is a film, which not only prevents short circuit, but also provides excellent electrolyte resistance, corrosion resistance and stable electrical conductivity, ensures smooth connection between the inside and outside of the battery, and ensures smooth flow of electrical energy.

[0030] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high corrosion-resistant nickel-plated copper positive electrode tab, comprising a connecting piece (1) and a positive electrode tab (101); Characterized in that: The connecting piece (1) comprises a positive electrode tab (101), a positioning structure (102), a battery (103) and a protection structure (104), the positive electrode tab (101) is fixed on both sides of the connecting piece (1), and the outer side of the connecting piece (1) is provided with the positioning structure (102); The bottom end of the connecting piece (1) is connected with the battery (103); The inside of the connecting piece (1) is provided with the protection structure (104), the protection structure (104) comprises a first base layer (1041), a corrosion-resistant layer (1042), a reinforcing layer (1043), a heat insulation layer (1044), a waterproof layer (1045) and a second base layer (1046), the first base layer (1041) is arranged inside the positive electrode tab (101), one side of the first base layer (1041) is fixed with the corrosion-resistant layer (1042), one side of the corrosion-resistant layer (1042) is fixed with the reinforcing layer (1043), the inside of the connecting piece (1) is provided with the heat insulation layer (1044), one side of the heat insulation layer (1044) is provided with the waterproof layer (1045), and one side of the waterproof layer (1045) is provided with the second base layer (1046).

2. The high corrosion resistant nickel plated copper positive tab of claim 1, wherein: The positive electrode tab (101) is provided with several groups, the positive electrode tab (101) is distributed at equal intervals on both sides of the connecting piece (1), and the battery (103) is provided with four groups, which are distributed at equal intervals at the bottom end of the connecting piece (1).

3. The high corrosion resistant nickel plated copper positive tab of claim 1, wherein: The positioning structure (102) comprises a first groove (1021), a second groove (1022) and a welding hole (1023), the first groove (1021) is arranged at the middle position of both sides of the connecting piece (1), the second groove (1022) is arranged at the middle position of both sides of the positive electrode tab (101), and the welding hole (1023) is arranged inside the positive electrode tab (101).

4. The high corrosion resistant nickel plated copper positive tab of claim 3, wherein: The first groove (1021) and the second groove (1022) are both arranged in "U" shape, the length of the first groove (1021) is greater than that of the second groove (1022), and the positive electrode tab (101) and the battery (103) are fixedly connected through the welding hole (1023).

5. The high corrosion resistant nickel plated copper positive tab of claim 1, wherein: The first base layer (1041) and the second base layer (1046) are made of copper material, the corrosion-resistant layer (1042) is made of nickel material, and the reinforcing layer (1043) is a graphene coating.

6. The high corrosion resistant nickel plated copper positive tab of claim 1, wherein: The heat insulation layer (1044) is made of graphite composite plate material, and the waterproof layer (1045) is a film.

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