Cylindrical battery busbar

Abstract

The utility model discloses a cylindrical battery busbar which comprises a body, a plurality of first bending parts, a plurality of first welding parts, a plurality of second bending parts and a plurality of second welding parts, every two adjacent main bodies are connected in a conducting mode, the multiple main bodies are arranged in a front-back staggered mode, the multiple first bending parts are arranged at one ends of the corresponding main bodies respectively and connected in a conducting mode, and the multiple first welding parts are connected with the corresponding first bending parts respectively in a conducting mode. According to the cylindrical battery busbar, the plurality of second bending parts are respectively arranged at the other ends of the corresponding main bodies and are in conduction connection, and the plurality of second welding parts are respectively in conduction connection with the corresponding second bending parts, so that the cylindrical battery busbar can reasonably utilize the space and improve the space utilization rate, and the volume of the whole battery module is smaller; through the arrangement of the first bending part and the second bending part, the strength of the connecting structure of the welding part and the body can be effectively enhanced, good buffering performance is achieved, breakage is not prone to being caused in the automobile running process, the product quality is improved, and existing requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of busbars, in particular to a cylindrical battery busbar. Background Art

[0002] New energy batteries are manufactured and widely used. According to different user requirements, new energy batteries have also been continuously innovated. New energy batteries can generally be divided into three categories: chemical batteries, physical batteries, and biological batteries. Multiple busbars are provided on the new energy battery, and the busbars are used to connect and collect current in the circuit.

[0003] Currently, the busbars used for cylindrical batteries generally have a structure including a body, multiple first welding parts, and multiple second welding parts. The multiple first welding parts extend from one end of the body, and the multiple first welding parts are arranged side by side at intervals left and right. The multiple second welding parts extend from the other end of the body, and the multiple second welding parts are arranged side by side at intervals left and right. Although this kind of cylindrical battery busbar can basically realize the functions of connecting the circuit and collecting current, however, the structural design of the busbar is not very reasonable, the occupied space is relatively large, the space utilization rate is relatively low, which makes the volume of the entire battery module relatively large and is not conducive to the miniaturization design of the battery module; moreover, during the driving of the vehicle, the battery module will generate vibrations. Currently, the connection structure strength between the welding part and the body in the cylindrical battery busbar is relatively low, which is easy to cause fracture, the product quality is relatively poor, and the service life is relatively short, and it cannot meet the existing requirements. Therefore, it is necessary to study a new technical solution to improve the current cylindrical battery busbar. Summary of the Utility Model

[0004] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present utility model is to provide a cylindrical battery busbar, which can effectively solve the problems that the existing cylindrical battery busbar has an unreasonable structural design, a relatively large occupied space, a relatively low space utilization rate, which makes the volume of the entire battery module relatively large and is not conducive to the miniaturization design of the battery module, during the driving of the vehicle, the battery module will generate vibrations, the connection structure strength between the welding part and the body is relatively low, which is easy to cause fracture, the product quality is relatively poor, and the service life is relatively short.

[0005] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0006] A cylindrical battery busbar includes a body, multiple first bending parts, multiple first welding parts, multiple second bending parts, and multiple second welding parts; the body includes multiple main bodies, two adjacent main bodies are conductively connected and arranged in a staggered manner front and back, and the body is provided with a first positioning hole for positioning in cooperation with an external battery; the multiple first bending parts are respectively arranged at one end of the corresponding main body and conductively connected to the corresponding main body; the multiple first welding parts are respectively conductively connected to the corresponding first bending parts, and the multiple first welding parts are arranged horizontally; the multiple second bending parts are respectively arranged at the other end of the corresponding main body and conductively connected to the corresponding main body; the multiple second welding parts are respectively conductively connected to the corresponding second bending parts, and the multiple second welding parts are arranged horizontally.

[0007] As a preferred solution, the first bending part is an arched structure, which has high strength, good stability, and good buffering performance.

[0008] As a preferred solution, the second bending part is an S-shaped structure, which has high strength, good stability, and good buffering performance.

[0009] As a preferred solution, the body, multiple first bending parts, multiple first welding parts, multiple second bending parts, and multiple second welding parts are all made of AL1060 material. The AL1060 material has good corrosion resistance and mechanical properties, excellent electrical conductivity, and the characteristic of light weight.

[0010] As a preferred solution, the first welding part and the second welding part are both made by upsetting forming, so that the mechanical properties of the first welding part and the second welding part are good and the strength is high.

[0011] As a preferred solution, the thickness of the first welding part and the second welding part is upset from 1.2 mm to 0.53 ± 0.07 mm.

[0012] As a preferred solution, the flatness of the first welding part and the second welding part is 0.08 mm, which improves the welding quality of the product.

[0013] As a preferred solution, the first welding part is circular, which can be well adapted to the electrode of the external battery, is conducive to the welding of the first welding part and the battery electrode, and improves the welding quality of the product.

[0014] As a preferred solution, the second welding part is arc-shaped, which can be well adapted to the electrode of the external battery, is conducive to the welding of the second welding part and the battery electrode, and improves the welding quality of the product.

[0015] As a preferred solution, there are five main bodies. Correspondingly, there are five of each of the first bending portions, the first welding portions, the second bending portions, and the second welding portions. The five first bending portions are respectively arranged at one end of the corresponding main body and conductively connected to the corresponding main body. The five first welding portions are respectively conductively connected to the corresponding first bending portions. The five first welding portions are arranged horizontally. The five second bending portions are respectively arranged at the other end of the corresponding main body and conductively connected to the corresponding main body. The five second welding portions are respectively conductively connected to the corresponding second bending portions. The five second welding portions are arranged horizontally.

[0016] Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions:

[0017] By providing that the body includes a plurality of main bodies, each adjacent two main bodies are conductively connected and arranged, and the plurality of main bodies are arranged offset front and back. The plurality of first bending portions are respectively arranged at one end of the corresponding main body and conductively connected to the corresponding main body. The plurality of first welding portions are respectively conductively connected to the corresponding first bending portions. The plurality of first welding portions are arranged horizontally. The plurality of second bending portions are respectively arranged at the other end of the corresponding main body and conductively connected to the corresponding main body. The plurality of second welding portions are respectively conductively connected to the corresponding second bending portions. The plurality of second welding portions are arranged horizontally. The busbar of the cylindrical battery with this structure can reasonably utilize space, improve space utilization rate, make the volume of the entire battery module smaller, and is beneficial to the miniaturized design of the battery module. And, through the arrangement of the first bending portion and the second bending portion, the connection structure strength between the welding portion and the body can be effectively enhanced, and it has good buffering performance. During the driving of the vehicle, it is not easy to cause fracture, greatly improving the quality of the product and extending the service life of the product, meeting the existing requirements.

[0018] To more clearly elaborate on the structural features and functions of the present utility model, the following will combine the drawings and specific embodiments to detail the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of a preferred embodiment of the present utility model;

[0020] Figure 2 is a three-dimensional structural schematic diagram of another angle of a preferred embodiment of the present utility model;

[0021] Figure 3 is a top view of a preferred embodiment of the present utility model.

[0022] DESCRIPTION OF THE REFERENCE NUMERALS IN THE DRAWINGS:

[0023] 10. Body 11. Main body

[0024] 12. First positioning hole 13. Second positioning hole

[0025] 20. First bending part 30. First welding part

[0026] 40. Second bending part 50. Second welding part. Detailed implementation mode

[0027] Please refer to Figures 1 to 3 As shown, it shows the specific structure of the preferred embodiment of the present utility model, including a body 10, a plurality of first bending parts 20, a plurality of first welding parts 30, a plurality of second bending parts 40 and a plurality of second welding parts 50.

[0028] The body 10 includes a plurality of main bodies 11. Every two adjacent main bodies 11 are conductively connected and arranged in a front-back offset manner. The body 10 is provided with a first positioning hole 12 for cooperating with an external battery for positioning; in this embodiment, the body 10 is made of AL1060 material, and the AL1060 material has good corrosion resistance and mechanical properties, has excellent electrical conductivity, and has the characteristic of light weight; the first positioning hole 12 is oval; there are a plurality of first positioning holes 12; the body 10 is further provided with a second positioning hole 13, and the second positioning hole 13 is circular; there are a plurality of second positioning holes 13.

[0029] The plurality of first bending parts 20 are respectively arranged at one end of the corresponding main body 10 and are conductively connected to the corresponding main body 10; in this embodiment, the first bending part 20 is an arched structure, and the arched structure has high strength, good stability and good buffering performance; the first bending part 20 is made of AL1060 material.

[0030] The plurality of first welding parts 30 are respectively conductively connected to the corresponding first bending parts 20, and the plurality of first welding parts 30 are arranged horizontally; in this embodiment, the first welding part 30 is made of AL1060 material; the first welding part 30 is formed by upsetting; specifically, the thickness of the first welding part 30 is upset from 1.2 mm to 0.53 ± 0.07 mm; the flatness of the first welding part 30 is 0.08 mm, improving the welding quality of the product; the first welding part 30 is circular and can be well adapted to the electrodes of the external battery, which is beneficial to the welding of the first welding part 30 and the battery electrodes and improves the welding quality of the product.

[0031] The plurality of second bending parts 40 are respectively arranged at the other end of the corresponding main body 10 and are conductively connected to the corresponding main body 10; in this embodiment, the second bending part 40 is an S-shaped structure, and the S-shaped structure has high strength, good stability and good buffering performance; the second bending part 40 is made of AL1060 material.

[0032] The multiple second welding parts 50 are respectively conductively connected to the corresponding second bending parts 40, and the multiple second welding parts 50 are horizontally arranged; in this embodiment, the second welding part 50 is made of AL1060 material; the second welding part 50 is formed by upsetting; specifically, the thickness of the second welding part 50 is upset from 1.2 mm to 0.53 ± 0.07 mm; the flatness of the second welding part 50 is 0.08 mm, improving the welding quality of the product; the second welding part 50 is arc-shaped, which can well match the electrodes of the external battery, facilitating the welding of the second welding part 50 and the battery electrodes and improving the welding quality of the product; in this embodiment, the first welding part 30 is connected to the positive electrode of the single battery of the battery module, and the second welding part 50 is connected to the negative electrode of the single battery of the battery module; or, the first welding part 30 is connected to the negative electrode of the single battery of the battery module, and the second welding part 50 is connected to the positive electrode of the single battery of the battery module.

[0033] In this embodiment, there are five main bodies 11. Correspondingly, there are five first bending parts 20, five first welding parts 30, five second bending parts 40 and five second welding parts 50. The five first bending parts 20 are respectively arranged at one end of the corresponding main body 11 and are conductively connected to the corresponding main body 11. The five first welding parts 30 are respectively conductively connected to the corresponding first bending parts 20. The five first welding parts 30 are horizontally arranged. The five second bending parts 40 are respectively arranged at the other end of the corresponding main body 11 and are conductively connected to the corresponding main body 11. The five second welding parts 50 are respectively conductively connected to the corresponding second bending parts 40. The five second welding parts 50 are horizontally arranged.

[0034] The usage method of this embodiment is described in detail as follows:

[0035] When in use, the first welding part 30 of the cylindrical battery busbar is welded and conductively connected to the positive electrode of the single battery of the battery module, and the second welding part 50 of the cylindrical battery busbar is welded and conductively connected to the negative electrode of the adjacent single battery, so as to serially arrange two adjacent single batteries to form a battery unit; and, every two adjacent main bodies 11 of the cylindrical battery busbar are conductively connected and arranged, so as to parallelly arrange two adjacent battery units.

[0036] In the cylindrical battery corresponding to this embodiment, two adjacent battery units are arranged in a structure with front-back dislocation, and the cylindrical battery is adapted to the cylindrical battery busbar.

[0037] The design focus of the present utility model lies in:

[0038] By setting the body to include multiple main bodies, with every two adjacent main bodies conductively connected and arranged with a front-back dislocation, arranging multiple first bending parts at one end of the corresponding main bodies respectively and conductively connecting them to the corresponding main bodies, connecting multiple first welding parts to the corresponding first bending parts conductively respectively, with these multiple first welding parts arranged horizontally, arranging multiple second bending parts at the other end of the corresponding main bodies respectively and conductively connecting them to the corresponding main bodies, connecting multiple second welding parts to the corresponding second bending parts conductively respectively, with these multiple second welding parts arranged horizontally, the busbar of the cylindrical battery with this structure can make reasonable use of space, improve the space utilization rate, make the volume of the whole battery module smaller, which is beneficial to the miniaturized design of the battery module; and, through the settings of the first bending part and the second bending part, the connection structure strength between the welding part and the body can be effectively enhanced, and it has good buffering performance. During the driving of the vehicle, it is not easy to cause fracture, greatly improving the quality of the product and extending the service life of the product, meeting the existing requirements.

[0039] The above are only the preferred embodiments of the present invention, and do not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A cylindrical battery busbar, characterized in that: It includes a body, multiple first bending parts, multiple first welding parts, multiple second bending parts, and multiple second welding parts; the body includes multiple main bodies, every two adjacent main bodies are conductively connected and arranged with a front-back dislocation, and the body is provided with a first positioning hole for positioning in cooperation with an external battery; the multiple first bending parts are respectively arranged at one end of the corresponding main body and conductively connected to the corresponding main body; the multiple first welding parts are respectively conductively connected to the corresponding first bending parts, and the multiple first welding parts are arranged horizontally; the multiple second bending parts are respectively arranged at the other end of the corresponding main body and conductively connected to the corresponding main body; the multiple second welding parts are respectively conductively connected to the corresponding second bending parts, and the multiple second welding parts are arranged horizontally.

2. The busbar of the cylindrical battery according to claim 1, wherein: The first bending part is an arched structure.

3. The busbar of the cylindrical battery according to claim 1, characterized in that: The second bending part is an S-shaped structure.

4. The busbar of the cylindrical battery according to claim 1, characterized in that: The body, multiple first bending parts, multiple first welding parts, multiple second bending parts, and multiple second welding parts are all made of AL1060 material.

5. The busbar of the cylindrical battery according to claim 1, wherein: Both the first welding part and the second welding part are made by upsetting forming.

6. The busbar of the cylindrical battery according to claim 5, wherein: The thickness of both the first welding part and the second welding part is upset from 1.2 mm to 0.53 ± 0.07 mm.

7. The bus bar of the cylindrical battery according to claim 1, wherein: The flatness of both the first welding part and the second welding part is 0.08 mm.

8. The bus bar of the cylindrical battery according to claim 1, wherein: The first welding part is circular.

9. The busbar of the cylindrical battery according to claim 1, wherein: The second welding part is arc-shaped.

10. The busbar of the cylindrical battery according to claim 1, characterized in that: There are five main bodies. Correspondingly, there are five first bending parts, five first welding parts, five second bending parts, and five second welding parts. The five first bending parts are respectively arranged at one end of the corresponding main body and conductively connected to the corresponding main body. The five first welding parts are respectively conductively connected to the corresponding first bending parts, and the five first welding parts are arranged horizontally. The five second bending parts are respectively arranged at the other end of the corresponding main body and conductively connected to the corresponding main body. The five second welding parts are respectively conductively connected to the corresponding second bending parts, and the five second welding parts are arranged horizontally.

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