Copper-nickel composite busbar of high-power lithium battery pack of cross-country motorcycle

Abstract

The utility model discloses a copper-nickel composite busbar of a high-power lithium battery pack of a cross-country motorcycle, which comprises a copper-nickel composite busbar body, a connecting component is arranged on the copper-nickel composite busbar body, and a protective component is arranged on one side of the copper-nickel composite busbar body. According to the copper-nickel composite busbar, the connection stability is ensured, the connection looseness is effectively prevented, the connection reliability can be kept even in the severe environment of vibration or impact, meanwhile, the protection assembly arranged on the copper-nickel composite busbar body can effectively absorb vibration and impact, buffer protection is provided for the busbar, and the service life of the busbar is prolonged. Connection looseness or structural damage caused by external impact is prevented, the stability of the busbar in a severe environment is ensured, and damage of excessive vibration to the busbar is avoided.

Description

Technical Field

[0001] This utility model relates to the field of busbar technology, specifically to a copper-nickel composite busbar for a high-power lithium battery pack for off-road motorcycles. Background Technology

[0002] Off-road motorcycle battery packs need to maintain high performance in harsh environments. Lithium batteries are the preferred choice due to their high energy density and long cycle life. However, the connection structure between individual cells is crucial to the overall performance. Traditionally, pure nickel is used as the connection material, but it has low mechanical strength, weak current carrying capacity, and poor heat dissipation. While pure copper has good conductivity, it lacks mechanical strength. To solve these problems, a composite bus combining the advantages of copper and nickel is proposed to meet the high requirements of durability and reliability for high-power lithium battery packs in off-road motorcycles.

[0003] However, the connection structure of the copper-nickel composite busbar in the high-power lithium battery pack of off-road motorcycles is not stable enough in actual use and is prone to loosening due to vibration or impact. At the same time, the copper-nickel composite busbar in the high-power lithium battery pack of off-road motorcycles lacks buffering and protection for the connection structure in actual use and cannot effectively cope with harsh environments.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a copper-nickel composite busbar for a high-power lithium battery pack for off-road motorcycles, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A copper-nickel composite busbar for a high-power lithium battery pack for off-road motorcycles includes a copper-nickel composite busbar body, a connecting assembly on the copper-nickel composite busbar body, and a plurality of connecting rods passing through the copper-nickel composite busbar body. One end of the connecting rod is threaded with a limiting nut, and a limiting block is fixedly provided at one end of the connecting rod.

[0008] Furthermore, in order to better provide auxiliary buffer protection for the copper-nickel composite busbar of the high-power lithium battery pack of off-road motorcycles, a protective component is provided on one side of the copper-nickel composite busbar body. The protective component includes multiple protective grooves opened on one side of the copper-nickel composite busbar body. Protective springs are fixedly connected to the inner wall of the protective grooves. A protective plate is fixed to one end of the protective springs, and a limit block is fixed to one side of the protective plate.

[0009] Furthermore, the copper-nickel composite busbar includes a pure nickel layer, a nickel-plated copper layer welded to one side of the pure nickel layer, multiple protective grooves formed on one side of the nickel-plated copper layer, and one side of the pure nickel layer in contact with one side of the limiting block.

[0010] Furthermore, in order to better enhance the strength of the nickel-plated copper layer and the pure nickel layer, reinforcing plates that are evenly distributed are fixedly connected to the surfaces of the nickel-plated copper layer and the pure nickel layer.

[0011] Furthermore, a connecting plate is provided on one side of the nickel-plated copper layer, and a connecting hole is provided on the connecting plate.

[0012] Furthermore, in order to better dissipate heat from the copper-nickel composite busbar of the high-power lithium battery pack for off-road motorcycles, I-shaped grooves with equal spacing are provided on one side of the pure nickel layer, and circular openings with equal spacing are provided on the other side of the pure nickel layer near the I-shaped grooves.

[0013] The beneficial effects of this utility model are as follows:

[0014] (1) The connection components installed in the copper-nickel composite busbar body ensure the stability of the connection and effectively prevent the connection from loosening. Even in harsh environments with vibration or impact, the reliability of the connection can be maintained. At the same time, the protective components installed in the copper-nickel composite busbar body can effectively absorb vibration and impact, provide buffer protection for the busbar, prevent the connection from loosening or structural damage caused by external impact, ensure the stability of the busbar in harsh environments, and avoid damage to the busbar due to excessive vibration.

[0015] (2) By setting the reinforcing plate in the nickel-plated copper layer and the pure nickel layer, the overall strength and stability of the busbar can be further enhanced, and structural deformation caused by mechanical stress can be prevented. At the same time, the I-shaped groove and circular opening set in the pure nickel layer not only improve the heat dissipation performance, but also avoid connection failure caused by local overheating by optimizing the current distribution, thereby further improving the reliability of the connection.

[0016] (3) By using a pure nickel layer and a nickel-plated copper layer on the copper-nickel composite busbar, not only can good corrosion resistance and mechanical strength be provided, but the stability and conductivity of the overall structure can also be ensured, improving the durability of the busbar and enhancing its protective performance in harsh environments. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the main structure of a copper-nickel composite busbar for a high-power lithium battery pack for off-road motorcycles according to an embodiment of the present utility model.

[0019] Figure 2 This is a bottom view of the copper-nickel composite busbar of a high-power lithium battery pack for off-road motorcycles according to an embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of the connection component structure of a copper-nickel composite busbar for a high-power lithium battery pack for off-road motorcycles according to an embodiment of the present utility model.

[0021] Figure 4 This is a schematic diagram of the protective component structure of a copper-nickel composite busbar for a high-power lithium battery pack for off-road motorcycles, according to an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Copper-nickel composite manifold body; 2. Connecting assembly; 201. Connecting rod; 202. Restricting nut; 203. Restricting block; 3. Protective assembly; 301. Protective groove; 302. Protective spring; 303. Protective plate; 304. Limiting block; 4. Pure nickel layer; 5. Nickel-plated copper layer; 6. Reinforcing plate; 7. Connecting plate; 8. Connecting hole; 9. I-beam groove; 10. Circular opening. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] like Figures 1-4 As shown, a copper-nickel composite busbar for a high-power lithium battery pack for off-road motorcycles according to an embodiment of the present utility model includes a copper-nickel composite busbar body 1. The copper-nickel composite busbar body 1 can be in various shapes, including but not limited to rectangular, circular, elliptical, polygonal or other customized shapes, to meet the needs of different battery packs and application scenarios. The manufacturing of the copper-nickel composite busbar body 1 requires electric welding under specific temperature and pressure to ensure a tight bond between the two metal layers.

[0027] The copper-nickel composite manifold 1 includes a pure nickel layer 4, and a nickel-plated copper layer 5 is welded to one side of the pure nickel layer 4. A connecting component 2 is provided on the copper-nickel composite manifold 1. The connecting component 2 includes six connecting rods 201 that pass through the copper-nickel composite manifold 1. A limiting nut 202 is threaded to one end of the connecting rod 201, and a limiting block 203 is fixedly provided to one end of the connecting rod 201.

[0028] A protective component 3 is provided on one side of the copper-nickel composite manifold 1. The protective component 3 includes four protective grooves 301 opened on one side of the copper-nickel composite manifold 1. A protective spring 302 is fixedly connected to the inner wall of the protective groove 301. A protective plate 303 is fixed to one end of the protective spring 302. A limit block 304 is fixed to one side of the protective plate 303.

[0029] Example 2:

[0030] like Figures 1-4 As shown, according to an embodiment of the present invention, a copper-nickel composite busbar for a high-power lithium battery pack for off-road motorcycles has four protective grooves 301 formed on one side of the nickel-plated copper layer 5, and one side of the pure nickel layer 4 is in contact with one side of the limiting block 203. The pure nickel layer 4 has a thickness of 0.15mm, which can provide sufficient corrosion resistance and mechanical strength in specific applications. The nickel-plated copper layer 5 has a thickness of 0.3mm, which ensures the stability and durability of the overall structure.

[0031] The nickel-plated copper layer 5 and the pure nickel layer 4 are fixedly connected with equidistant reinforcing plates 6. A connecting plate 7 is provided on one side of the nickel-plated copper layer 5. The connecting plate 7 has connecting holes 8. In actual use, the connecting holes 8 and the connecting plate 7 are connected to the battery pack protection board through sampling lines. The pure nickel layer 4 has equidistant I-shaped grooves 9 on one side. The I-shaped grooves 9 are rectangular openings with rounded corners. They are used to connect the copper-nickel composite busbar to the battery. Subsequent electric welding is performed here, which makes the welding more solid and helps the current to be evenly distributed on the nickel sheet. It avoids local overheating and helps dissipate heat, thereby improving the welding quality and the battery life. The pure nickel layer 4 has equidistant circular openings 10 near the I-shaped grooves 9 on one side. The radius of the circular openings 10 is 2.5mm. This improves heat dissipation performance, reduces the overall weight, and helps to improve the overall quality and performance of the copper-nickel composite busbar.

[0032] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0033] In summary, with the help of the above-mentioned technical solution of this utility model, during installation, the workers pass the connecting rod 201 through the nickel-plated copper layer 5 and the pure nickel layer 4, so that the limiting block 203 set on the connecting rod 201 contacts the pure nickel layer 4. Then, one end of the connecting rod 201 is tightened by tightening the limiting nut 202 to apply a pre-tightening force, forming a double fixation to avoid loosening due to vibration or impact.

[0034] When external impact or vibration is transmitted to the busbar, the protective plate 303 is compressed by the pressure pushing the protective spring 302. The spring deformation absorbs energy, and the limit block 304 limits the excessive compression of the spring, realizing controllable buffering and protecting the internal connection structure.

[0035] The pure nickel layer 4 has I-shaped grooves 9 and circular openings 10 on its surface, which can increase the surface area and accelerate heat dissipation. Its arc-shaped four corners optimize the current distribution, reduce local overheating, further assist in heat dissipation and reduce the overall weight. The current is efficiently transmitted through the nickel-plated copper layer 5. At the same time, the I-shaped grooves 9 of the pure nickel layer 4 can also make the current path uniform and avoid connection failure caused by concentrated heat. The nickel-plated copper layer 5 has a connecting plate 7 and a connecting hole 8 on one side for connecting to the battery pack protection board or external circuits. It is fixed by bolts or welding to ensure low impedance contact and improve the conductivity stability of the overall system.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A copper-nickel composite busbar for off-road motorcycle high-power lithium battery packs, characterized by, The application relates to a copper-nickel composite busbar body (1), which is provided with a connecting assembly (2), the connecting assembly (2) comprises a plurality of connecting rods (201) penetrating through the copper-nickel composite busbar body (1), one end of the connecting rod (201) is threadedly connected with a limiting nut (202), and one end of the connecting rod (201) is fixedly provided with a limiting block (203).

2. The copper-nickel composite busbar of a high-power lithium battery pack for an off-road motorcycle according to claim 1, characterized in that, The copper-nickel composite busbar body (1) is provided with a protection assembly (3) on one side, the protection assembly (3) comprises a plurality of protection grooves (301) formed on one side of the copper-nickel composite busbar body (1), the inner wall of the protection groove (301) is fixedly connected with a protection spring (302), one end of the protection spring (302) is fixedly provided with a protection plate (303), and one side of the protection plate (303) is fixedly provided with a limiting block (304).

3. The copper-nickel composite busbar of a high-power lithium battery pack for an off-road motorcycle according to claim 2, characterized in that, The copper-nickel composite busbar body (1) comprises a pure nickel layer (4), the pure nickel layer (4) is welded with a nickel-plated copper layer (5) on one side, the plurality of protection grooves (301) are formed on one side of the nickel-plated copper layer (5), and one side of the pure nickel layer (4) is in contact with one side of the limiting block (203).

4. The copper-nickel composite busbar of a high-power lithium battery pack for an off-road motorcycle according to claim 3, characterized in that, The surface of the nickel-plated copper layer (5) and the pure nickel layer (4) is fixedly connected with reinforcing plates (6) distributed at equal distances.

5. The copper-nickel composite busbar of a high-power lithium battery pack for an off-road motorcycle according to claim 4, characterized in that, The nickel-plated copper layer (5) is provided with a connecting plate (7) on one side, and the connecting plate (7) is provided with connecting holes (8).

6. A copper-nickel composite busbar for a high-power off-road motorcycle lithium battery pack according to claim 5, characterized in that, The pure nickel layer (4) is provided with a plurality of I-shaped grooves (9) distributed at equal distances on one side, and the pure nickel layer (4) is provided with a plurality of circular openings (10) distributed at equal distances on one side close to the I-shaped grooves (9).

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